National Library of Energy BETA

Sample records for alternating-current ac system

  1. Methods, systems and apparatus for controlling operation of two alternating current (AC) machines

    DOE Patents [OSTI]

    Gallegos-Lopez, Gabriel; Nagashima, James M.; Perisic, Milun; Hiti, Silva

    2012-06-05

    A system is provided for controlling two alternating current (AC) machines via a five-phase PWM inverter module. The system comprises a first control loop, a second control loop, and a current command adjustment module. The current command adjustment module operates in conjunction with the first control loop and the second control loop to continuously adjust current command signals that control the first AC machine and the second AC machine such that they share the input voltage available to them without compromising the target mechanical output power of either machine. This way, even when the phase voltage available to either one of the machines decreases, that machine outputs its target mechanical output power.

  2. Methods, systems and apparatus for controlling operation of two alternating current (AC) machines

    DOE Patents [OSTI]

    Gallegos-Lopez, Gabriel; Nagashima, James M.; Perisic, Milun; Hiti, Silva

    2012-02-14

    A system is provided for controlling two AC machines. The system comprises a DC input voltage source that provides a DC input voltage, a voltage boost command control module (VBCCM), a five-phase PWM inverter module coupled to the two AC machines, and a boost converter coupled to the inverter module and the DC input voltage source. The boost converter is designed to supply a new DC input voltage to the inverter module having a value that is greater than or equal to a value of the DC input voltage. The VBCCM generates a boost command signal (BCS) based on modulation indexes from the two AC machines. The BCS controls the boost converter such that the boost converter generates the new DC input voltage in response to the BCS. When the two AC machines require additional voltage that exceeds the DC input voltage required to meet a combined target mechanical power required by the two AC machines, the BCS controls the boost converter to drive the new DC input voltage generated by the boost converter to a value greater than the DC input voltage.

  3. Analysis of operations and cyber security policies for a system of cooperating Flexible Alternating Current Transmission System (FACTS) devices.

    SciTech Connect (OSTI)

    Phillips, Laurence R.; Tejani, Bankim; Margulies, Jonathan; Hills, Jason L.; Richardson, Bryan T.; Baca, Micheal J.; Weiland, Laura

    2005-12-01

    Flexible Alternating Current Transmission Systems (FACTS) devices are installed on electric power transmission lines to stabilize and regulate power flow. Power lines protected by FACTS devices can increase power flow and better respond to contingencies. The University of Missouri Rolla (UMR) is currently working on a multi-year project to examine the potential use of multiple FACTS devices distributed over a large power system region in a cooperative arrangement in which the FACTS devices work together to optimize and stabilize the regional power system. The report describes operational and security challenges that need to be addressed to employ FACTS devices in this way and recommends references, processes, technologies, and policies to address these challenges.

  4. AC power systems handbook

    SciTech Connect (OSTI)

    Whitaker, J.

    1991-01-01

    Transient disturbances are what headaches are made of. Whatever you call them-spikes, surges, are power bumps-they can take your equipment down and leave you with a complicated and expensive repair job. Protection against transient disturbances is a science that demands attention to detail. This book explains how the power distribution system works, what can go wrong with it, and how to protect a facility against abnormalities. system grounding and shielding are covered in detail. Each major method of transient protection is analyzed and its relative merits discussed. The book provides a complete look at the critical elements of the ac power system. Provides a complete look at the ac power system from generation to consumption. Discusses the mechanisms that produce transient disturbances and how to protect against them. Presents diagrams to facilitate system design. Covers new areas, such as the extent of the transient disturbance problem, transient protection options, and stand-by power systems.

  5. Alternating current long range alpha particle detector

    DOE Patents [OSTI]

    MacArthur, D.W.; McAtee, J.L.

    1993-02-16

    An alpha particle detector, utilizing alternating currents, which is capable of detecting alpha particles from distinct sources. The use of alternating currents allows use of simpler ac circuits which, in turn, are not susceptible to dc error components. It also allows the benefit of gas gain, if desired. In the invention, a voltage source creates an electric field between two conductive grids, and between the grids and a conductive enclosure. Air containing air ions created by collision with alpha particles is drawn into the enclosure and detected. In some embodiments, the air flow into the enclosure is interrupted, creating an alternating flow of ions. In another embodiment, a modulated voltage is applied to the grid, also modulating the detection of ions.

  6. Alternating current long range alpha particle detector

    DOE Patents [OSTI]

    MacArthur, Duncan W.; McAtee, James L.

    1993-01-01

    An alpha particle detector, utilizing alternating currents, whcih is capable of detecting alpha particles from distinct sources. The use of alternating currents allows use of simpler ac circuits which, in turn, are not susceptible to dc error components. It also allows the benefit of gas gain, if desired. In the invention, a voltage source creates an electric field between two conductive grids, and between the grids and a conductive enclosure. Air containing air ions created by collision with alpha particles is drawn into the enclosure and detected. In some embodiments, the air flow into the enclosure is interrupted, creating an alternating flow of ions. In another embodiment, a modulated voltage is applied to the grid, also modulating the detection of ions.

  7. Alternating Current Photovoltaic Building Block - Energy Innovation Portal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Solar Photovoltaic Solar Photovoltaic Find More Like This Return to Search Alternating Current Photovoltaic Building Block Sandia National Laboratories Contact SNL About This Technology Publications: PDF Document Publication Market Sheet (891 KB) Technology Marketing Summary This technology provides a fully integrated and self-containing alternating current (AC) photovoltaic (PV) Building Block device and method that allows photovoltaic applications to become true plug-and-play devices. The

  8. Precision electronic speed controller for an alternating-current

    DOE Patents [OSTI]

    Bolie, Victor W.

    1988-01-01

    A high precision controller for an alternating-current multi-phase electrical motor that is subject to a large inertial load. The controller was developed for and is particularly suitable for controlling, in a neutron chopper system, a heavy spinning rotor that must be rotated in phase-locked synchronism with a reference pulse train that is representative of an ac power supply signal having a meandering line frequency. The controller includes a shaft revolution sensor which provides a feedback pulse train representative of the actual speed of the motor. An internal digital timing signal generator provides a reference signal which is compared with the feedback signal in a computing unit to provide a motor control signal. In the preferred embodiment, the motor control signal is a weighted linear sum of a speed error voltage, a phase error voltage, and a drift error voltage, each of which is computed anew with each revolution of the motor shaft. The stator windings of the motor are driven by two amplifiers which are provided with input signals having the proper quadrature relationship by an exciter unit consisting of a voltage controlled oscillator, a binary counter, a pair of readonly memories, and a pair of digital-to-analog converters.

  9. Optical devices having flakes suspended in a host fluid to provide a flake/fluid system providing flakes with angularly dependent optical properties in response to an alternating current electric field due to the dielectric properties of the system

    DOE Patents [OSTI]

    Kosc, Tanya Z.; Marshall, Kenneth L.; Jacobs, Stephen D.

    2006-05-09

    Optical devices utilizing flakes (also called platelets) suspended in a host fluid have optical characteristics, such as reflective properties, which are angular dependent in response to an AC field. The reflectivity may be Bragg-like, and the characteristics are obtained through the use of flakes of liquid crystal material, such as polymer liquid crystal (PLC) materials including polymer cholesteric liquid crystal (PCLC) and polymer nematic liquid crystal (PNLC) material or birefringent polymers (BP). The host fluid may be propylene carbonate, poly(ethylene glycol) or other fluids or fluid mixtures having fluid conductivity to support conductivity in the flake/host system. AC field dependent rotation of 90.degree. can be obtained at rates and field intensities dependent upon the frequency and magnitude of the AC field. The devices are useful in providing displays, polarizers, filters, spatial light modulators and wherever switchable polarizing, reflecting, and transmission properties are desired.

  10. Precision electronic speed controller for an alternating-current motor

    DOE Patents [OSTI]

    Bolie, V.W.

    A high precision controller for an alternating-current multi-phase electrical motor that is subject to a large inertial load. The controller was developed for controlling, in a neutron chopper system, a heavy spinning rotor that must be rotated in phase-locked synchronism with a reference pulse train that is representative of an ac power supply signal having a meandering line frequency. The controller includes a shaft revolution sensor which provides a feedback pulse train representative of the actual speed of the motor. An internal digital timing signal generator provides a reference signal which is compared with the feedback signal in a computing unit to provide a motor control signal. The motor control signal is a weighted linear sum of a speed error voltage, a phase error voltage, and a drift error voltage, each of which is computed anew with each revolution of the motor shaft. The speed error signal is generated by a novel vernier-logic circuit which is drift-free and highly sensitive to small speed changes. The phase error is also computed by digital logic, with adjustable sensitivity around a 0 mid-scale value. The drift error signal, generated by long-term counting of the phase error, is used to compensate for any slow changes in the average friction drag on the motor. An auxillary drift-byte status sensor prevents any disruptive overflow or underflow of the drift-error counter. An adjustable clocked-delay unit is inserted between the controller and the source of the reference pulse train to permit phase alignment of the rotor to any desired offset angle. The stator windings of the motor are driven by two amplifiers which are provided with input signals having the proper quadrature relationship by an exciter unit consisting of a voltage controlled oscillator, a binary counter, a pair of read-only memories, and a pair of digital-to-analog converters.

  11. Alternating current loss reduction for rectangular busbars by...

    Office of Scientific and Technical Information (OSTI)

    Alternating current loss reduction for rectangular busbars by covering their edges with low permeable magnetic caps Citation Details In-Document Search Title: Alternating current...

  12. Simultaneous distribution of AC and DC power

    DOE Patents [OSTI]

    Polese, Luigi Gentile

    2015-09-15

    A system and method for the transport and distribution of both AC (alternating current) power and DC (direct current) power over wiring infrastructure normally used for distributing AC power only, for example, residential and/or commercial buildings' electrical wires is disclosed and taught. The system and method permits the combining of AC and DC power sources and the simultaneous distribution of the resulting power over the same wiring. At the utilization site a complementary device permits the separation of the DC power from the AC power and their reconstruction, for use in conventional AC-only and DC-only devices.

  13. Preparation of scanning tunneling microscopy tips using pulsed alternating current etching

    SciTech Connect (OSTI)

    Valencia, Victor A.; Thaker, Avesh A.; Derouin, Jonathan; Valencia, Damian N.; Farber, Rachael G.; Gebel, Dana A.; Killelea, Daniel R.

    2015-03-15

    An electrochemical method using pulsed alternating current etching (PACE) to produce atomically sharp scanning tunneling microscopy (STM) tips is presented. An Arduino Uno microcontroller was used to control the number and duration of the alternating current (AC) pulses, allowing for ready optimization of the procedures for both Pt:Ir and W tips using a single apparatus. W tips prepared using constant and pulsed AC power were compared. Tips fashioned using PACE were sharper than those etched with continuous AC power alone. Pt:Ir tips were prepared with an initial coarse etching stage using continuous AC power followed by fine etching using PACE. The number and potential of the finishing AC pulses was varied and scanning electron microscope imaging was used to compare the results. Finally, tip quality using the optimized procedures was verified by UHV-STM imaging. With PACE, at least 70% of the W tips and 80% of the Pt:Ir tips were of sufficiently high quality to obtain atomically resolved images of HOPG or Ni(111)

  14. Fault current limiter and alternating current circuit breaker

    DOE Patents [OSTI]

    Boenig, Heinrich J.

    1998-01-01

    A solid-state circuit breaker and current limiter for a load served by an alternating current source having a source impedance, the solid-state circuit breaker and current limiter comprising a thyristor bridge interposed between the alternating current source and the load, the thyristor bridge having four thyristor legs and four nodes, with a first node connected to the alternating current source, and a second node connected to the load. A coil is connected from a third node to a fourth node, the coil having an impedance of a value calculated to limit the current flowing therethrough to a predetermined value. Control means are connected to the thyristor legs for limiting the alternating current flow to the load under fault conditions to a predetermined level, and for gating the thyristor bridge under fault conditions to quickly reduce alternating current flowing therethrough to zero and thereafter to maintain the thyristor bridge in an electrically open condition preventing the alternating current from flowing therethrough for a predetermined period of time.

  15. Fault current limiter and alternating current circuit breaker

    DOE Patents [OSTI]

    Boenig, H.J.

    1998-03-10

    A solid-state circuit breaker and current limiter are disclosed for a load served by an alternating current source having a source impedance, the solid-state circuit breaker and current limiter comprising a thyristor bridge interposed between the alternating current source and the load, the thyristor bridge having four thyristor legs and four nodes, with a first node connected to the alternating current source, and a second node connected to the load. A coil is connected from a third node to a fourth node, the coil having an impedance of a value calculated to limit the current flowing therethrough to a predetermined value. Control means are connected to the thyristor legs for limiting the alternating current flow to the load under fault conditions to a predetermined level, and for gating the thyristor bridge under fault conditions to quickly reduce alternating current flowing therethrough to zero and thereafter to maintain the thyristor bridge in an electrically open condition preventing the alternating current from flowing therethrough for a predetermined period of time. 9 figs.

  16. AVTA: Blink AC Level 2 Charging System Testing Results | Department of

    Broader source: Energy.gov (indexed) [DOE]

    Energy Blink AC Level 2 charging system for plug-in electric vehicles. This research was conducted by Idaho National Laboratory. PDF icon Blink AC Level 2 - February 2012 More Documents & Publications AVTA: Aerovironment AC Level 2 Charging System Testing Results AVTA: Clipper Creek AC Level 2 Charging System Testing Results AVTA: Eaton AC Level 2 Charging System Testing Results

  17. Enhancement of crystal homogeneity of protein crystals under application of an external alternating current electric field

    SciTech Connect (OSTI)

    Koizumi, H.; Uda, S.; Fujiwara, K.; Nozawa, J.; Tachibana, M.; Kojima, K.

    2014-10-06

    X-ray diffraction rocking-curve measurements were performed on tetragonal hen egg white (HEW) lysozyme crystals grown with and without the application of an external alternating current (AC) electric field. The crystal quality was assessed by the full width at half maximum (FWHM) value for each rocking curve. For two-dimensional maps of the FWHMs measured on the 440 and the 12 12 0 reflection, the crystal homogeneity was improved under application of an external electric field at 1 MHz, compared with that without. In particular, the significant improvement of the crystal homogeneity was observed for the 12 12 0 reflection.

  18. Method for sputtering with low frequency alternating current

    DOE Patents [OSTI]

    Timberlake, J.R.

    1996-04-30

    Low frequency alternating current sputtering is provided by connecting a low frequency alternating current source to a high voltage transformer having outer taps and a center tap for stepping up the voltage of the alternating current. The center tap of the transformer is connected to a vacuum vessel containing argon or helium gas. Target electrodes, in close proximity to each other, and containing material with which the substrates will be coated, are connected to the outer taps of the transformer. With an applied potential, the gas will ionize and sputtering from the target electrodes onto the substrate will then result. The target electrodes can be copper or boron, and the substrate can be stainless steel, aluminum, or titanium. Copper coatings produced are used in place of nickel and/or copper striking. 6 figs.

  19. Method for sputtering with low frequency alternating current

    DOE Patents [OSTI]

    Timberlake, John R.

    1996-01-01

    Low frequency alternating current sputtering is provided by connecting a low frequency alternating current source to a high voltage transformer having outer taps and a center tap for stepping up the voltage of the alternating current. The center tap of the transformer is connected to a vacuum vessel containing argon or helium gas. Target electrodes, in close proximity to each other, and containing material with which the substrates will be coated, are connected to the outer taps of the transformer. With an applied potential, the gas will ionize and sputtering from the target electrodes onto the substrate will then result. The target electrodes can be copper or boron, and the substrate can be stainless steel, aluminum, or titanium. Copper coatings produced are used in place of nickel and/or copper striking.

  20. Electrostatic coalescence system with independent AC and DC hydrophilic electrodes

    DOE Patents [OSTI]

    Hovarongkura, A. David; Henry, Jr., Joseph D.

    1981-01-01

    An improved electrostatic coalescence system is provided in which independent AC and DC hydrophilic electrodes are employed to provide more complete dehydration of an oil emulsion. The AC field is produced between an AC electrode array and the water-oil interface wherein the AC electrode array is positioned parallel to the interface which acts as a grounded electrode. The emulsion is introduced into the AC field in an evenly distributed manner at the interface. The AC field promotes drop-drop and drop-interface coalescence of the water phase in the entering emulsion. The continuous oil phase passes upward through the perforated AC electrode array and enters a strong DC field produced between closely spaced DC electrodes in which small dispersed droplets of water entrained in the continuous phase are removed primarily by collection at hydrophilic DC electrodes. Large droplets of water collected by the electrodes migrate downward through the AC electrode array to the interface. All phase separation mechanisms are utilized to accomplish more complete phase separation.

  1. AVTA: Aerovironment AC Level 2 Charging System Testing Results | Department

    Energy Savers [EERE]

    of Energy Aerovironment AC Level 2 Charging System Testing Results AVTA: Aerovironment AC Level 2 Charging System Testing Results The Vehicle Technologies Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. These results provide benchmark data that researchers can use to develop technology models and guide future research and development. The following report describes

  2. Development of an AC Module System: Final Technical Report

    SciTech Connect (OSTI)

    Suparna Kadam; Miles Russell

    2012-06-15

    The GreenRay Inc. program focused on simplifying solar electricity and making it affordable and accessible to the mainstream population. This was accomplished by integrating a solar module, micro-inverter, mounting and monitoring into a reliable, 'plug and play' AC system for residential rooftops, offering the following advantages: (1) Reduced Cost: Reduction in installation labor with fewer components, faster mounting, faster wiring. (2) Maximized Energy Production: Each AC Module operates at its maximum, reducing overall losses from shading, mismatch, or module downtime. (3) Increased Safety. Electrical and fire safety experts agree that AC Modules have significant benefits, with no energized wiring or live connections during installation, maintenance or emergency conditions. (4) Simplified PV for a Broader Group of Installers. Dramatic simplification of design and installation of a solar power system, enabling faster and more efficient delivery of the product into the market through well-established, mainstream channels. This makes solar more accessible to the public. (5) Broadened the Rooftop Market: AC Modules enable solar for many homes that have shading, split roofs, or obstructions. In addition, due to the smaller building block size of 200W vs. 1000W, homeowners with budget limitations can start small and add to their systems over time. Through this DOE program GreenRay developed the all-in-one AC Module system with an integrated PV Module and microinverter, custom residential mounting and performance monitoring. Development efforts took the product from its initial concept, through prototypes, to a commercial product sold and deployed in the residential market. This pilot deployment has demonstrated the technical effectiveness of the AC Module system in meeting the needs and solving the problems of the residential market. While more expensive than the traditional central inverter systems at the pilot scale, the economics of AC Modules become more and more favorable as the product matures and is made in high volumes. GreenRay's early customers have been highly enthusiastic about the AC Module system benefits.

  3. EIS-0145: Non-Federal Participation in Alternating Current Intertie

    Broader source: Energy.gov [DOE]

    The Bonneville Power Administration (BPA) prepared this environmental impact statement to assess the environmental impacts of non-Federal access to the AC Intertie and BPA Intertie marketing.

  4. HVDC-AC system interaction from AC harmonics. Volume 1. Harmonic impedance calculations. Final report

    SciTech Connect (OSTI)

    Breuer, G D; Chow, J H; Lindh, C B; Miller, N W; Numrich, F H; Price, W W; Turner, A E; Whitney, R R

    1982-09-01

    Improved methods are needed to characterize ac system harmonic behavior for ac filter design for HVDC systems. The purpose of this General Electric Company RP1138 research is to evaluate the present filter design practice and to investigate methods for calculating system harmonic impedances. An overview of ac filter design for HVDC systems and a survey of literature related to filter design have been performed. Two methods for calculating system harmonic impedances have been investigated. In the measurement method, an instrumentation system for measuring system voltage and current has been assembled. Different schemes of using the measurements to calculate system harmonic impedances have been studied. In the analytical method, a procedure to include various operating conditions has been proposed. Computer programs for both methods have been prepared, and the results of the measurement and analytical methods analyzed. A conclusion of the project is that the measurement and analytical methods both provided reasonable results. There are correlations between the measured and analytical results for most harmonics, although there are discrepancies between the assumptions used in the two methods. A sensitivity approach has been proposed to further correlate the results. From the results of the analysis, it is recommended that both methods should be tested further. For the measurement method, more testing should be done to cover different system operating conditions. In the analytical method, more detailed models for representing system components should be studied. In addition, alternative statistical and sensitivity approaches should be attempted.

  5. AVTA Voltec AC Level 1 and Level 2 Charging Systems Testing Results |

    Broader source: Energy.gov (indexed) [DOE]

    Department of Energy testing done on the Voltec Level 1 and Level 2 charging systems for plug-in electric vehicles. This research was conducted by Idaho National Laboratory. PDF icon Voltec AC Level 1 - November 2012 PDF icon Voltec AC Level 2 - October 2012 More Documents & Publications AVTA: Eaton AC Level 2 Charging System Testing Results AVTA: Aerovironment AC Level 2 Charging System Testing Results AVTA: Siemens-VersiCharge AC Level 2 Charging System Testing Results

  6. Installing and Maintaining a Home Solar Electric System | Department...

    Energy Savers [EERE]

    ... (W) or kilowatts (kW). If possible, have the bids specify the system capacity in "AC Watts" (alternating current) under ... Also request an estimate of the amount of energy that the ...

  7. System and method for determining stator winding resistance in an AC motor using motor drives

    DOE Patents [OSTI]

    Lu, Bin; Habetler, Thomas G; Zhang, Pinjia

    2013-02-26

    A system and method for determining the stator winding resistance of AC motors is provided. The system includes an AC motor drive having an input connectable to an AC source and an output connectable to an input terminal of an AC motor, a pulse width modulation (PWM) converter having switches therein to control current flow and terminal voltages in the AC motor, and a control system connected to the PWM converter. The control system generates a command signal to cause the PWM converter to control an output of the AC motor drive corresponding to an input to the AC motor, selectively generates a modified command signal to cause the PWM converter to inject a DC signal into the output of the AC motor drive, and determines a stator winding resistance of the AC motor based on the DC signal of at least one of the voltage and current.

  8. AVTA: Leviton AC Level 2 Charging System Testing Results | Department of

    Broader source: Energy.gov (indexed) [DOE]

    Energy describes results from testing done on the Leviton Level 2 charging system for plug-in electric vehicles. This research was conducted by Idaho National Laboratory. PDF icon Leviton AC Level 2 - February 2012 More Documents & Publications AVTA: Eaton AC Level 2 Charging System Testing Results AVTA: Aerovironment AC Level 2 Charging System Testing Results AVTA: Siemens-VersiCharge AC Level 2 Charging System Testing Results

  9. Simultaneous distribution of AC and DC power - Energy Innovation...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    buildings has significant energy savings potential through the elimination of inverters necessary to convert DC source power into AC (Alternating Current) as well as the...

  10. Alternating current response of carbon nanotubes with randomly distributed impurities

    SciTech Connect (OSTI)

    Hirai, Daisuke; Watanabe, Satoshi [Department of Materials Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656 (Japan); Yamamoto, Takahiro [Department of Electrical Engineering and Department of Liberal Arts (Physics), Tokyo University of Science, 6-3-1 Niijuku, Katsushika, Tokyo 125-8585 (Japan)

    2014-10-27

    The increasing need for nanodevices has necessitated a better understanding of the electronic transport behavior of nanomaterials. We therefore theoretically examine the AC transport properties of metallic carbon nanotubes with randomly distributed impurities. We find that the long-range impurity scattering increases the emittance, but does not affect the DC conductance. The estimated dwell time of electrons increases with the potential amplitudes. That is, multiple scattering by the impurities increases the kinetic inductance in proportion to the dwell time, which eventually increases the emittance. We believe that our findings can contribute significantly to nanodevice development.

  11. AVTA: Clipper Creek AC Level 2 Charging System Testing Results | Department

    Broader source: Energy.gov (indexed) [DOE]

    of Energy ClipperCreek AC Level 2 charging system for plug-in electric vehicles. This research was conducted by Idaho National Laboratory. PDF icon Clipper Creek AC Level 2 - February 2012 More Documents & Publications AVTA: Aerovironment AC Level 2 Charging System Testing Results AVTA: Eaton

  12. AVTA: Eaton AC Level 2 Charging System Testing Results | Department of

    Broader source: Energy.gov (indexed) [DOE]

    Energy Eaton AC Level 2 charging system for plug-in electric vehicles. This research was conducted by Idaho National Laboratory. PDF icon Eaton AC Level 2 - February 2012 More Documents & Publications AVTA: Aerovironment AC Level 2 Charging System Testing Results AVTA: Clipper Creek

  13. Alternative current conduction mechanisms of organic-inorganic compound [N(CH{sub 3}){sub 3}H]{sub 2}ZnCl{sub 4}

    SciTech Connect (OSTI)

    Ben Bechir, M. Karoui, K.; Guidara, K.; Ben Rhaiem, A.; Tabellout, M.

    2014-04-21

    [N(CH{sub 3}){sub 3}H]{sub 2}ZnCl{sub 4} has been studied by X-ray powder diffraction patterns, differential scanning calorimetry (DSC), and impedance spectroscopy. The [N(CH{sub 3}){sub 3}H]{sub 2}ZnCl{sub 4} hybrid compound is crystallized at room temperature (T ? 300?K) in the orthorhombic system with Pnma space group. Five phase transitions (T{sub 1}?=?255?K, T{sub 2}?=?282?K, T{sub 3}?=?302?K, T{sub 4}?=?320?K, and T{sub 5}?=?346?K) have been proved by DSC measurements. The electrical technique was measured in the 10{sup ?1}-10{sup 7}?Hz frequency range and 233363?K temperature interval. The frequency dependence of alternative current (AC) conductivity is interpreted in terms of Jonscher's law. The AC electrical conduction in [N(CH{sub 3}){sub 3}H]{sub 2}ZnCl{sub 4} is analyzed by different processes, which can be attributed to several models: the correlated barrier hopping model in phase I, the overlapping large polaron tunneling model in phase II, the quantum mechanical tunneling model in phase IV, and the non-overlapping small polaron tunneling model in phases III, V, and VI. The conduction mechanism is studied with the help of Elliot's theory, and the Elliot's parameters are determined.

  14. Alternative current conduction mechanisms of organic-inorganic compound [N(CH{sub 3}){sub 3}H]{sub 2}CuCl{sub 4}

    SciTech Connect (OSTI)

    Ben Bechir, M. Karoui, K.; Guidara, K.; Ben Rhaiem, A.; Tabellout, M.

    2014-05-28

    The [N(CH{sub 3}){sub 3}H]{sub 2}CuCl{sub 4} single crystal has been analyzed by X-ray powder diffraction patterns, differential scanning calorimetry (DSC), and electrical impedance spectroscopy. [N(CH{sub 3}){sub 3}H]{sub 2}CuCl{sub 4} crystallizes at room temperature in the monoclinic system with P2{sub 1}/{sub C} space group. Three phase transitions at T{sub 1}?=?226?K, T{sub 2}?=?264?K, and T{sub 3}?=?297?K have been evidenced by DSC measurements. The electrical technique was measured in the 10{sup ?1}10{sup 7}?Hz frequency range and 203313?K temperature intervals. The frequency dependence of alternative current (AC) conductivity is interpreted in terms of Jonscher's law (developed). The AC electrical conduction in [N(CH{sub 3}){sub 3}H]{sub 2}CuCl{sub 4} compound is studied by two processes which can be attributed to a hopping transport mechanism: the correlated barrier hopping model in phases I, II, and III, the non-overlapping small polaron tunneling model in phase IV. The conduction mechanism is interpreted with the help of Elliot's theory, and the Elliot's parameters are found.

  15. System and Battery Charge Control for PV-Powered AC Lighting Systems

    SciTech Connect (OSTI)

    Kern, G.

    1999-04-01

    This report reviews a number of issues specific to stand-alone AC lighting systems. A review of AC lighting technology is presented, which discusses the advantages and disadvantages of various lamps. The best lamps for small lighting systems are compact fluorescent. The best lamps for intermediate-size systems are high- or low-pressure sodium. Specifications for battery charging and load control are provided with the goal of achieving lamp lifetimes on the order of 16,000 to 24,000 hours and battery lifetimes of 4 to 5 years. A rough estimate of the potential domestic and global markets for stand-alone AC lighting systems is presented. DC current injection tests were performed on high-pressure sodium lamps and the test results are presented. Finally, a prototype system was designed and a prototype system controller (with battery charger and DC/AC inverter) was developed and built.

  16. System and method for determining stator winding resistance in an AC motor

    DOE Patents [OSTI]

    Lu, Bin; Habetler, Thomas G.; Zhang, Pinjia; Theisen, Peter J.

    2011-05-31

    A system and method for determining stator winding resistance in an AC motor is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of an AC motor. The circuit includes at least one contactor and at least one switch to control current flow and terminal voltages in the AC motor. The system also includes a controller connected to the circuit and configured to modify a switching time of the at least one switch to create a DC component in an output of the system corresponding to an input to the AC motor and determine a stator winding resistance of the AC motor based on the injected DC component of the voltage and current.

  17. Microfabricated AC impedance sensor

    DOE Patents [OSTI]

    Krulevitch, Peter; Ackler, Harold D.; Becker, Frederick; Boser, Bernhard E.; Eldredge, Adam B.; Fuller, Christopher K.; Gascoyne, Peter R. C.; Hamilton, Julie K.; Swierkowski, Stefan P.; Wang, Xiao-Bo

    2002-01-01

    A microfabricated instrument for detecting and identifying cells and other particles based on alternating current (AC) impedance measurements. The microfabricated AC impedance sensor includes two critical elements: 1) a microfluidic chip, preferably of glass substrates, having at least one microchannel therein and with electrodes patterned on both substrates, and 2) electrical circuits that connect to the electrodes on the microfluidic chip and detect signals associated with particles traveling down the microchannels. These circuits enable multiple AC impedance measurements of individual particles at high throughput rates with sufficient resolution to identify different particle and cell types as appropriate for environmental detection and clinical diagnostic applications.

  18. Review of the design and performance features of hvdc systems connected to low short circuit ratio ac systems

    SciTech Connect (OSTI)

    Thallam, R.S. )

    1992-10-01

    The design and performance of an HVdc system is significantly impacted by the relative strength of the ac system to which it is connected. In this paper, design and performance features of ten HVdc systems are discussed. All of these systems are connected to ac systems that are relatively weak compared to the rating of the dc system. Six of these systems are back-to-back, two are overhead lines, and two are undersea cable connections. AC and dc system interaction problems and how they are addressed in the design and specification of each of these systems, are described.

  19. AVTA: Siemens-VersiCharge AC Level 2 Charging System Testing Results |

    Broader source: Energy.gov (indexed) [DOE]

    Department of Energy Siemens-VersiCharge Level 2 charging system for plug-in electric vehicles. This research was conducted by Idaho National Laboratory. PDF icon Siemens-VersiCharge AC Level 2 - November

  20. AVTA: SPX AC Level 2 Charging System Testing Results | Department of Energy

    Energy Savers [EERE]

    SPX AC Level 2 Charging System Testing Results AVTA: SPX AC Level 2 Charging System Testing Results The Vehicle Technologies Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. These results provide benchmark data that researchers can use to develop technology models and guide future research and development. The following report describes results from testing done on the SPX

  1. AVTA: ChargePoint AC Level 2 Charging System Testing Results | Department

    Broader source: Energy.gov (indexed) [DOE]

    of Energy ChargePoint AC Level 2 charging system for plug-in electric vehicles. This research was conducted by Idaho National Laboratory. PDF icon ChargePoint AC Level 2 - February 2012 More Documents & Publications AVTA: EVSE Charging Protocol for On and Off-Peak Demand AVTA: 2012 Chevrolet Volt PHEV Downloadable Dynamometer Database Reports AVTA: ChargePoint America Recovery Act project map of charging units

  2. Method and apparatus for reducing the harmonic currents in alternating-current distribution networks

    DOE Patents [OSTI]

    Beverly, Leon H.; Hance, Richard D.; Kristalinski, Alexandr L.; Visser, Age T.

    1996-01-01

    An improved apparatus and method reduce the harmonic content of AC line and neutral line currents in polyphase AC source distribution networks. The apparatus and method employ a polyphase Zig-Zag transformer connected between the AC source distribution network and a load. The apparatus and method also employs a mechanism for increasing the source neutral impedance of the AC source distribution network. This mechanism can consist of a choke installed in the neutral line between the AC source and the Zig-Zag transformer.

  3. Method and apparatus for reducing the harmonic currents in alternating-current distribution networks

    DOE Patents [OSTI]

    Beverly, L.H.; Hance, R.D.; Kristalinski, A.L.; Visser, A.T.

    1996-11-19

    An improved apparatus and method reduce the harmonic content of AC line and neutral line currents in polyphase AC source distribution networks. The apparatus and method employ a polyphase Zig-Zag transformer connected between the AC source distribution network and a load. The apparatus and method also employs a mechanism for increasing the source neutral impedance of the AC source distribution network. This mechanism can consist of a choke installed in the neutral line between the AC source and the Zig-Zag transformer. 23 figs.

  4. Comparison of direct current and 50?Hz alternating current microscopic corona characteristics on conductors

    SciTech Connect (OSTI)

    Zhang, Shuai Zhang, Bo He, Jinliang

    2014-06-15

    Corona discharge is one of the major design factors for extra-high voltage and ultra-high voltage DC/AC transmission lines. Under different voltages, corona discharge reveals different characteristics. This paper aims at investigating DC and AC coronas on the microscopic scale. To obtain the specific characteristics of DC and AC coronas, a new measurement approach that utilizes a coaxial wire-cylinder corona cage is designed in this paper, and wires of different diameters are used in the experiment. Based on the measurements, the respective microscopic characteristics of DC and AC coronas are analyzed and compared. With differences in characteristics between DC and AC coronas proposed, this study provides useful insights into DC/AC corona discharges on transmission line applications.

  5. System and method for monitoring and controlling stator winding temperature in a de-energized AC motor

    DOE Patents [OSTI]

    Lu, Bin; Luebke, Charles John; Habetler, Thomas G.; Zhang, Pinjia; Becker, Scott K.

    2011-12-27

    A system and method for measuring and controlling stator winding temperature in an AC motor while idling is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of a multi-phase AC motor. The circuit further includes a plurality of switching devices to control current flow and terminal voltages in the multi-phase AC motor and a controller connected to the circuit. The controller is configured to activate the plurality of switching devices to create a DC signal in an output of the motor control device corresponding to an input to the multi-phase AC motor, determine or estimate a stator winding resistance of the multi-phase AC motor based on the DC signal, and estimate a stator temperature from the stator winding resistance. Temperature can then be controlled and regulated by DC injection into the stator windings.

  6. System for transmitting low frequency analog signals over AC power lines

    DOE Patents [OSTI]

    Baker, Steven P.; Durall, Robert L.; Haynes, Howard D.

    1989-01-01

    A system for transmitting low frequency analog signals over AC power lines using FM modulation. A low frequency analog signal to be transmitted is first applied to a voltage-to-frequency converter where it is converted to a signal whose frequency varies in proportion to the analog signal amplitude. This signal is then used to modulate the carrier frequency of an FM transmitter coupled to an AC power line. The modulation signal frequency range in selected to be within the response band of the FM transmitter. The FM modulated carrier signal is received by an FM receiver coupled to the AC power line, demodulated and the demodulated signal frequency is converted by a frequency-to-voltage converter back to the form of the original low frequency analog input signal.

  7. A system for tranmitting low frequency analog signals over ac power lines

    DOE Patents [OSTI]

    Baker, S.P.; Durall, R.L.; Haynes, H.D.

    1987-07-30

    A system for transmitting low frequency analog signals over ac power lines using FM modulation. A low frequency analog signal to be transmitted is first applied to a voltage-to-frequency converter where it is converted to a signal whose frequency varies in proportion to the analog signal amplitude. This signal is then used to modulate the carrier frequency of an FM transmitter coupled to an ac power line. The modulation signal frequency range is selected to be within the response band of the FM transmitter. The FM modulated carrier signal is received by an FM receiver coupled to the ac power line, demodulated and the demodulated signal frequency is converted by a frequency-to-voltage converter back to the form of the original low frequency analog input signal. 4 figs.

  8. Direct current uninterruptible power supply method and system

    DOE Patents [OSTI]

    Sinha, Gautam

    2003-12-02

    A method and system are described for providing a direct current (DC) uninterruptible power supply with the method including, for example: continuously supplying fuel to a turbine; converting mechanical power from the turbine into alternating current (AC) electrical power; converting the AC electrical power to DC power within a predetermined voltage level range; supplying the DC power to a load; and maintaining a DC load voltage within the predetermined voltage level range by adjusting the amount of fuel supplied to the turbine.

  9. Refrigeration System Installation and Startup Procedures, and AC Equipment Efficiency

    SciTech Connect (OSTI)

    2010-04-16

    This information sheet describes a series of measurements to evaluate a cooling system: air flow, pressures, temperatures, humidity levels, and power draw.

  10. Clock Controller For Ac Self-Timing Analysis Of Logic System

    DOE Patents [OSTI]

    Lo, Tinchee; Flanagan, John D.

    2004-05-18

    A clock controller and clock generating method are provided for AC self-test timing analysis of a logic system. The controller includes latch circuitry which receives a DC input signal at a data input, and a pair of continuous out-of-phase clock signals at capture and launch clock inputs thereof. The latch circuitry outputs two overlapping pulses responsive to the DC input signal going high. The two overlapping pulses are provided to waveform shaper circuitry which produces therefrom two non-overlapping pulses at clock speed of the logic system to be tested. The two non-overlapping pulses are a single pair of clock pulses which facilitate AC self-test timing analysis of the logic system.

  11. Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive

    DOE Patents [OSTI]

    Konrad, C.E.; Boothe, R.W.

    1996-01-23

    A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements. 6 figs.

  12. Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive

    DOE Patents [OSTI]

    Konrad, C.E.; Boothe, R.W.

    1994-02-15

    A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements. 6 figures.

  13. Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive

    DOE Patents [OSTI]

    Konrad, Charles E.; Boothe, Richard W.

    1994-01-01

    A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements.

  14. Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive

    DOE Patents [OSTI]

    Konrad, Charles E.; Boothe, Richard W.

    1996-01-01

    A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements.

  15. Electro-optically responsive composites of gold nanospheres in 5CB liquid crystal under direct current and alternating current joint action

    SciTech Connect (OSTI)

    Hadjichristov, Georgi B.; Marinov, Yordan G.; Petrov, Alexander G.; Bruno, Emanuela; Marino, Lucia; Scaramuzza, Nicola

    2014-02-28

    Direct current (DC) electro-optical (EO) control of transmitted laser beam intensity based on EO controlled coherent light scattering and diffraction by stationary longitudinal texture pattern (LTP) is achieved in planar-oriented cells with a composite mixture of polymer-coated gold spherical nanoparticles (Au-NPs) with a mean diameter of about 12?nm and the room-temperature nematic pentylcyanobiphenyl (5CB). At relatively low DC voltage of about 5 V, the effective scattering/diffraction by Au-NPs/5CB composites leads to a spatial spreading of transmitted coherent light from a low-power continuous wave laser beam, resulting in a drastic reduction of its local intensity. The effect is polarization dependent and is strongest when the polarization of the input laser beam is along the LTP. The EO response of Au-NPs/5CB mixtures is studied under DC and alternating current (AC) joint action with the aim of the potential use of these composite materials as EO controlled diffusers. The specific V-shaped sharp dip in the DC voltage-dependent coherent light transmittance of Au-NPs/5CB planar films, as well as the possibility for erasing the scattering/diffractive LTP in the films by joint low AC voltage, can be useful for EO applications in the field of process control and for detection of weak dynamic electric fields.

  16. Alternating current field measurement (ACFM): A new technique for the NDT of process plant and piping components

    SciTech Connect (OSTI)

    Raine, G.A.; Monahan, C.C.

    1996-12-31

    This paper describes a new electromagnetic-based NDT technology that is suitable for inspecting process plant and pipework fabricated from some of the more advanced materials, in addition to the traditional carbon steels. The name given to this new NDT technique is Alternating Current Field Measurement, or ACFM. ACFM is an extremely versatile NDT tool with a wide range of practical applications. A major advantage of ACFM over conventional NDT systems is that no calibration is required; crack detection and sizing is based on a theoretical interpretation of the measured signals. The technique is non-contacting and can be used on a wide range of electrically conductive materials (e.g., carbon steel, stainless steel, duplex steel, monel, inconel, aluminum, nickel, titanium, carbon reinforced plastics) without the need for extensive surface cleaning or removal of protective coatings. The flaws may be surface, sub-surface or remote face, depending on the material, and the probes can be designed to suppress signals from features that are not cracks (e.g., corrosion, undercuts, heat-affected zones, etc.), thus overcoming many of the problems associated with other electromagnetic systems and minimizing the probability of spurious indications.

  17. Systems and methods for deactivating a matrix converter

    DOE Patents [OSTI]

    Ransom, Ray M.

    2013-04-02

    Systems and methods are provided for deactivating a matrix conversion module. An electrical system comprises an alternating current (AC) interface, a matrix conversion module coupled to the AC interface, an inductive element coupled between the AC interface and the matrix conversion module, and a control module. The control module is coupled to the matrix conversion module, and in response to a shutdown condition, the control module is configured to operate the matrix conversion module to deactivate the first conversion module when a magnitude of a current through the inductive element is less than a threshold value.

  18. Comparison of the Accuracy and Speed of Transient Mobile A/C System Simulation Models: Preprint

    SciTech Connect (OSTI)

    Kiss, T.; Lustbader, J.

    2014-03-01

    The operation of air conditioning (A/C) systems is a significant contributor to the total amount of fuel used by light- and heavy-duty vehicles. Therefore, continued improvement of the efficiency of these mobile A/C systems is important. Numerical simulation has been used to reduce the system development time and to improve the electronic controls, but numerical models that include highly detailed physics run slower than desired for carrying out vehicle-focused drive cycle-based system optimization. Therefore, faster models are needed even if some accuracy is sacrificed. In this study, a validated model with highly detailed physics, the 'Fully-Detailed' model, and two models with different levels of simplification, the 'Quasi-Transient' and the 'Mapped- Component' models, are compared. The Quasi-Transient model applies some simplifications compared to the Fully-Detailed model to allow faster model execution speeds. The Mapped-Component model is similar to the Quasi-Transient model except instead of detailed flow and heat transfer calculations in the heat exchangers, it uses lookup tables created with the Quasi-Transient model. All three models are set up to represent the same physical A/C system and the same electronic controls. Speed and results of the three model versions are compared for steady state and transient operation. Steady state simulated data are also compared to measured data. The results show that the Quasi-Transient and Mapped-Component models ran much faster than the Fully-Detailed model, on the order of 10- and 100-fold, respectively. They also adequately approach the results of the Fully-Detailed model for steady-state operation, and for drive cycle-based efficiency predictions

  19. Method and system for an on-chip AC self-test controller

    DOE Patents [OSTI]

    Flanagan, John D.; Herring, Jay R.; Lo, Tin-Chee

    2008-09-30

    A method and system for performing AC self-test on an integrated circuit that includes a system clock for use during normal operation are provided. The method includes applying a long data capture pulse to a first test register in response to the system clock, applying an at speed data launch pulse to the first test register in response to the system clock, inputting the data from the first register to a logic path in response to applying the at speed data launch pulse to the first test register, applying an at speed data capture pulse to a second test register in response to the system clock, inputting the logic path output to the second test register in response to applying the at speed data capture pulse to the second test register, and applying a long data launch pulse to the second test register in response to the system clock.

  20. Method and system for an on-chip AC self-test controller

    DOE Patents [OSTI]

    Flanagan, John D.; Herring, Jay R.; Lo, Tin-Chee

    2006-06-06

    A method for performing AC self-test on an integrated circuit, including a system clock for use during normal operation. The method includes applying a long data capture pulse to a first test register in response to the system clock, and further applying at an speed data launch pulse to the first test register in response to the system clock. Inputting the data from the first register to a logic path in response to applying the at speed data launch pulse to the first test register. Applying at speed data capture pulse to a second test register in response to the system clock. Inputting the output from the logic path to the second test register in response to applying the at speed data capture pulse to the second register. Applying a long data launch pulse to the second test register in response to the system clock.

  1. Differences between direct current and alternating current capacitance nonlinearities in high-k dielectrics and their relation to hopping conduction

    SciTech Connect (OSTI)

    Khaldi, O.; Kassmi, M.; Gonon, P. Valle, C.; Mannequin, C.; Sylvestre, A.; Jomni, F.

    2014-08-28

    Capacitance nonlinearities were studied in atomic layer deposited HfO{sub 2} films using two types of signals: a pure ac voltage of large magnitude (ac nonlinearities) and a small ac voltage superimposed to a large dc voltage (dc nonlinearities). In theory, ac and dc nonlinearities should be of the same order of magnitude. However, in practice, ac nonlinearities are found to be an order of magnitude higher than dc nonlinearities. Besides capacitance nonlinearities, hopping conduction is studied using low-frequency impedance measurements and is discussed through the correlated barrier hopping model. The link between hopping and nonlinearity is established. The ac nonlinearities are ascribed to the polarization of isolated defect pairs, while dc nonlinearities are attributed to electrode polarization which originates from defect percolation paths. Both the ac and dc capacitance nonlinearities display an exponential variation with voltage, which results from field-induced lowering of the hopping barrier energy.

  2. The sluggs survey: HST/ACS mosaic imaging of the NGC 3115 globular cluster system

    SciTech Connect (OSTI)

    Jennings, Zachary G.; Romanowsky, Aaron J.; Brodie, Jean P.; Arnold, Jacob A.; Strader, Jay; Lin, Dacheng; Irwin, Jimmy A.; Wong, Ka-Wah; Sivakoff, Gregory R.

    2014-08-01

    We present Hubble Space Telescope/Advanced Camera for Surveys (HST/ACS) g and z photometry and half-light radii R {sub h} measurements of 360 globular cluster (GC) candidates around the nearby S0 galaxy NGC 3115. We also include Subaru/Suprime-Cam g, r, and i photometry of 421 additional candidates. The well-established color bimodality of the GC system is obvious in the HST/ACS photometry. We find evidence for a 'blue tilt' in the blue GC subpopulation, wherein the GCs in the blue subpopulation get redder as luminosity increases, indicative of a mass-metallicity relationship. We find a color gradient in both the red and blue subpopulations, with each group of clusters becoming bluer at larger distances from NGC 3115. The gradient is of similar strength in both subpopulations, but is monotonic and more significant for the blue clusters. On average, the blue clusters have ?10% larger R {sub h} than the red clusters. This average difference is less than is typically observed for early-type galaxies but does match that measured in the literature for the Sombrero Galaxy (M104), suggesting that morphology and inclination may affect the measured size difference between the red and blue clusters. However, the scatter on the R {sub h} measurements is large. We also identify 31 clusters more extended than typical GCs, which we term ultra-compact dwarf (UCD) candidates. Many of these objects are actually considerably fainter than typical UCDs. While it is likely that a significant number will be background contaminants, six of these UCD candidates are spectroscopically confirmed as NGC 3115 members. To explore the prevalence of low-mass X-ray binaries in the GC system, we match our ACS and Suprime-Cam detections to corresponding Chandra X-ray sources. We identify 45 X-ray-GC matches: 16 among the blue subpopulation and 29 among the red subpopulation. These X-ray/GC coincidence fractions are larger than is typical for most GC systems, probably due to the increased depth of the X-ray data compared to previous studies of GC systems.

  3. Non-vanishing ponderomotive AC electrophoretic effect for particle trapping

    SciTech Connect (OSTI)

    Guan, Weihau; Park, Jae Hyun nmn; Krstic, Predrag S; Reed, Mark A

    2011-01-01

    We present here a study on overlooked aspects of alternating current (AC) electrokinetics AC electrophoretic (ACEP) phenomena. The dynamics of a particle with both polarizability and net charges in a non-uniform AC electric trapping field is investigated. It is found that either electrophoretic (EP) or dielectrophoretic (DEP) effects can dominate the trapping dynamics, depending on experimental conditions. A dimensionless parameter gamma is developed to predict the relative strength of EP and DEP effects in a quadrupole AC field. An ACEP trap is feasible for charged particles in salt-free or low salt concentration solutions. In contrast to DEP traps, an ACEP trap favors the downscaling of the particle size.

  4. Applications of exact linearization techniques for steady-state stability enhancement in a weak ac/dc system

    SciTech Connect (OSTI)

    Kaprielian, S.; Clements, K. ); Turi, J. )

    1992-05-01

    A nonlinear control strategy to improve the steady-state stability of a weak AC/DC power system is presented. The approach described in this paper is based on the extension of feedback linearization techniques to nonlinear descriptor system models. This method produces a nonlinear control strategy which is capable of enhancing system performance for various system operating conditions. This claim is supported with simulation results.

  5. Utility-Interconnected Photovoltaic Systems: Evaluating the Rationale for the Utility-Accessible External Disconnect Switch

    SciTech Connect (OSTI)

    Coddington, M.; Margolis, R.M.; Aabakken, J.

    2008-01-01

    The utility-accessible alternating current (AC) external disconnect switch (EDS) for distributed generators, including photovoltaic (PV) systems, is a hardware feature that allows a utility?s employees to manually disconnect a customer-owned generator from the electricity grid. This paper examines the utility-accessible EDS debate in the context of utility-interactive PV systems for residential and small commercial installations. It also evaluates the rationale for EDS requirements.

  6. AC Propulsion | Open Energy Information

    Open Energy Info (EERE)

    Inc. is a California Corporation founded in 1992 to develop, manufacture, and license system and component technology for electric vehicle drive systems. References: AC...

  7. In situ observation and evaluation of electrodeposited lithium by means of optical microscopy with alternating current impedance spectroscopy

    SciTech Connect (OSTI)

    Osaka, Tetsuya; Momma, Toshiyuki; Nishimura, Ken; Tajima, Takayuki . Dept. of Applied Chemistry)

    1993-10-01

    Lithium batteries are some of the best candidates for use as high energy density batteries and have been widely studied. Electrodeposited lithium was evaluated by ac impedance measurement and optical microscopy in two solutions containing LiClO[sub 4]; a propylene carbonate (PC) solution and a blended solution consisting of PC and 1,2-dimethoxyethane (DME) (volume ratio = 1:1). The ac impedance data were analyzed in the higher frequency region, where the charge-transfer resistance (R) of Li[sup +] + e[sup [minus

  8. Variable-Speed Wind Power System with Improved Energy Capture via

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Multilevel Conversion - Energy Innovation Portal Electricity Transmission Electricity Transmission Advanced Materials Advanced Materials Find More Like This Return to Search Variable-Speed Wind Power System with Improved Energy Capture via Multilevel Conversion National Renewable Energy Laboratory Contact NREL About This Technology Technology Marketing Summary Power converters are used to convert alternating current (AC) electric power from a fixed-frequency and fixed-voltage to different

  9. All-AC, building integrated PV system for mass deployment of residential PV systems

    SciTech Connect (OSTI)

    Kevin Cammack; Joe Augenbraun; Dan Sun

    2011-05-17

    Project Objective: Solar Red is developing novel PV installation methods and system designs that lower costs dramatically and allow seamless integration into the structure of any sloped roof using existing construction tools and processes. The overall objective of this project is to address the greatest barriers to massive adoption of residential and small commercial rooftop solar scalability of installation and total cost of ownership - by moving Solar Reds snap-in/snap-out PV installation method from the pre-prototype design phase to the development and construction of a deployed prototype system. Financial Summary: ? Funded through ARRA, DOE and Match Funding ? Original Project Budget: $229,310 o DOE/ARRA Funding: $150,000 o Match Funding: $79,310 ? Actual Cost: $216,598 o DOE/ARRA Funding: $150,000 o Match Funding: $120,087 Project Summary: Develop snap-in/snap-out mounting system for low-cost, thin-film solar panels Lower installation cost Lower sales costs Lower training/expertise barriers

  10. System and method for motor speed estimation of an electric motor

    DOE Patents [OSTI]

    Lu, Bin; Yan, Ting; Luebke, Charles John; Sharma, Santosh Kumar

    2012-06-19

    A system and method for a motor management system includes a computer readable storage medium and a processing unit. The processing unit configured to determine a voltage value of a voltage input to an alternating current (AC) motor, determine a frequency value of at least one of a voltage input and a current input to the AC motor, determine a load value from the AC motor, and access a set of motor nameplate data, where the set of motor nameplate data includes a rated power, a rated speed, a rated frequency, and a rated voltage of the AC motor. The processing unit is also configured to estimate a motor speed based on the voltage value, the frequency value, the load value, and the set of nameplate data and also store the motor speed on the computer readable storage medium.

  11. Ac traction gets on track

    SciTech Connect (OSTI)

    O`Connor, L.

    1995-09-01

    This article describes inverter-based ac traction systems which give freight locomotives greater adhesion, pulling power, and braking capacity. In the 1940s, dc traction replaced the steam engine as a source of train propulsion, and it has ruled the freight transportation industry ever since. But now, high-performance ac-traction systems, with their unprecedented levels of pulling power and adhesion, are becoming increasingly common on America`s freight railroads. In thousands of miles of demonstration tests, today`s ac-traction systems have outperformed traditional dc-motor driven systems. Major railroad companies are convinced enough of the benefits of ac traction to have integrated it into their freight locomotives.

  12. AVTA: Schneider AC Level 2 Charging System Testing Results | Department of

    Broader source: Energy.gov (indexed) [DOE]

    Department of Energy Plug-in Hybrid Electric Vehicle Test Plan PDF icon DRAFT - Integrated Test Plan and Evaluation Program for Review for Plug-in Hybrid Electric Vehicles (PHEVs) More Documents & Publications AVTA: Hybrid Electric Vehicle Specifications and Test Procedures Vehicle Technologies Office: 2010 Vehicle and Systems Simulation and Testing R&D Annual Progress Report AVTA: 2011 Chevrolet Volt Testing Results

    SPX Level 2 charging system for plug-in electric vehicles. This

  13. ACS | Open Energy Information

    Open Energy Info (EERE)

    ACS Jump to: navigation, search Name: ACS Place: Madrid, Spain Zip: 28036 Sector: Solar Product: Madrid based construction company involved in the development of solar thermal...

  14. Optimization of AC Dipole Parameters for the Mu2e Extinction System

    SciTech Connect (OSTI)

    Prebys, E.; /Fermilab

    2012-05-01

    The Mu2e experiment is being planned at Fermilab to measure the rate for muons to convert to electrons in the field of an atomic nucleus with unprecedented precision. This experiment uses an 8 GeV primary proton beam consisting of short ({approx}200 nsec FW) bunches, separated by 1.7 {mu}sec. It is vital that out-of-bunch beam be suppressed at the level of 10{sup -10} or less. This poster describes the parametric analysis which was done to determine the optimum harmonics and magnet specifications for this system, as well as the implications for the beam line optics.

  15. Improving the homogeneity of alternating current-drive atmospheric pressure dielectric barrier discharges in helium with an additional low-amplitude radio frequency power source: A numerical study

    SciTech Connect (OSTI)

    Wang Qi [Dalian Institute of Semiconductor Technology, School of Electronics Science and Technology, Dalian University of Technology, Dalian 116023 (China); Sun Jizhong; Zhang Jianhong; Wang Dezhen [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023 (China); Liu Liying [Department of Electrical Engineering, Shenyang Institute of Engineering, Shenyang 110136 (China)

    2013-04-15

    It was proposed in this paper that the homogeneity of the atmospheric pressure discharge driven by an ac power source could be improved by applying an auxiliary low-amplitude rf power source. To verify the idea, a two-dimensional fluid model then was applied to study the atmospheric discharges in helium driven by ac power, low-amplitude rf power, and combined ac and low-amplitude rf power, respectively. Simulation results confirmed that an auxiliary rf power could improve the homogeneity of a discharge driven by an ac power source. It was further found that there existed a threshold voltage of the rf power source leading to the transition from inhomogeneous to homogeneous discharge. As the frequency of the rf power source increased from 2 to 22 MHz, the magnitude of the threshold voltage dropped first rapidly and then to a constant value. When the frequency was over 13.56 MHz, the magnitude of the threshold voltage was smaller than one-sixth of the ac voltage amplitude under the simulated discharge parameters.

  16. Development of a low-cost integrated 20-kW-AC solar tracking subarray for grid-connected PV power system applications. Final technical report

    SciTech Connect (OSTI)

    Stern, M.; Duran, G.; Fourer, G.; Mackamul, K.; Whalen, W.; Loo, M. van; West, R.

    1998-06-01

    This report chronicles Utility Power Group's (UPG) successful two-year Photovoltaic Manufacturing Technology (PVMaT) Phase 4A1 work effort which began in July, 1995. During this period, UPG completed design, fabrication, testing and demonstration of a modular and fully integrated 15-kW-ac, solar tracking PV power system sub-array. The two key and innovative components which were developed are a Modular Panel which optimizes factory assembly of PV modules into a large area, field-deployable, structurally-integrated PV panel, and an Integrated Power Processing Unit which combines all dc and ac power collection, conversion and control functions within a single, field-deployable structurally-integrated electrical enclosure. These two key sub-array elements, when combined with a number of other electrical, mechanical, and structural components, create a low-cost and high-performance PV power system. This system, or sub-array, can be deployed in individual units, or paralleled with any number of other sub-arrays, to construct multi-megawatt P fields. 21 figs.

  17. Development of a low cost integrated 15 kW A.C. solar tracking sub-array for grid connected PV power system applications

    SciTech Connect (OSTI)

    Stern, M.; West, R.; Fourer, G.; Whalen, W.; Van Loo, M.; Duran, G.

    1997-02-01

    Utility Power Group has achieved a significant reduction in the installed cost of grid-connected PV systems. The two part technical approach focused on (1) The utilization of a large area factory assembled PV panel, and (2) The integration and packaging of all sub-array power conversion and control functions within a single factory produced enclosure. Eight engineering prototype 15kW ac single axis solar tracking sub-arrays were designed, fabricated, and installed at the Sacramento Municipal Utility District{close_quote}s Hedge Substation site in 1996 and are being evaluated for performance and reliability. A number of design enhancements will be implemented in 1997 and demonstrated by the field deployment and operation of over twenty advanced sub-array PV power systems. {copyright} {ital 1997 American Institute of Physics.}

  18. ACS Symposium Program

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    224th ACS National Meeting Division of Analytical Chemistry Symposium on Chemical Science Using Synchrotron Radiation Wednesday, August 21, 2002 Sheraton, Boston, MA This symposium...

  19. Scalable Heuristics for Planning, Placement and Sizing of Flexible AC

    Office of Scientific and Technical Information (OSTI)

    Transmission System Devices (Technical Report) | SciTech Connect Technical Report: Scalable Heuristics for Planning, Placement and Sizing of Flexible AC Transmission System Devices Citation Details In-Document Search Title: Scalable Heuristics for Planning, Placement and Sizing of Flexible AC Transmission System Devices Aiming to relieve transmission grid congestion and improve or extend feasibility domain of the operations, we build optimization heuristics, generalizing standard AC Optimal

  20. AC Transit | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Technology Validation » AC Transit AC Transit AC Transit logo AC Transit (or the Alameda-Contra Costa Transit District) is based in Oakland, California, and provides transportation services to the East Bay of San Francisco. The 360-square-mile service area includes 13 cities and adjacent unincorporated areas in Alameda and Contra Costa counties. AC Transit's approximately 638 vehicles serve more than 65 million annual passengers. Photo of zero emission hydrogen fuel cell bus at AC Transit.

  1. Plasma generators, reactor systems and related methods

    DOE Patents [OSTI]

    Kong, Peter C. (Idaho Falls, ID); Pink, Robert J. (Pocatello, ID); Lee, James E. (Idaho Falls, ID)

    2007-06-19

    A plasma generator, reactor and associated systems and methods are provided in accordance with the present invention. A plasma reactor may include multiple sections or modules which are removably coupled together to form a chamber. Associated with each section is an electrode set including three electrodes with each electrode being coupled to a single phase of a three-phase alternating current (AC) power supply. The electrodes are disposed about a longitudinal centerline of the chamber and are arranged to provide and extended arc and generate an extended body of plasma. The electrodes are displaceable relative to the longitudinal centerline of the chamber. A control system may be utilized so as to automatically displace the electrodes and define an electrode gap responsive to measure voltage or current levels of the associated power supply.

  2. Surface potential distribution and airflow performance of different air-exposed electrode plasma actuators at different alternating current/direct current voltages

    SciTech Connect (OSTI)

    Yang, Liang; Yan, Hui-Jie; Qi, Xiao-Hua; Hua, Yue; Ren, Chun-Sheng

    2015-04-15

    Asymmetric surface dielectric barrier discharge (SDBD) plasma actuators have been intensely studied for a number of years due to their potential applications for aerodynamic control. In this paper, four types of actuators with different configurations of exposed electrode are proposed. The SDBD actuators investigated are driven by dual-power supply, referred to as a fixed AC high voltage and an adjustable DC bias. The effects of the electrode structures on the dielectric surface potential distribution, the electric wind velocity, and the mean thrust production are studied, and the dominative factors of airflow acceleration behavior are revealed. The results have shown that the actions of the SDBD actuator are mainly dependent on the geometry of the exposed electrode. Besides, the surface potential distribution can effectively affect the airflow acceleration behavior. With the application of an appropriate additional DC bias, the surface potential will be modified. As a result, the performance of the electric wind produced by a single SDBD can be significantly improved. In addition, the work also illustrates that the actuators with more negative surface potential present better mechanical performance.

  3. Solar Electric Grid Integration - Advanced Concepts (SEGIS-AC) Funding

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Opportunity | Department of Energy Solar Electric Grid Integration - Advanced Concepts (SEGIS-AC) Funding Opportunity Solar Electric Grid Integration - Advanced Concepts (SEGIS-AC) Funding Opportunity Through the Solar Electric Grid Integration - Advanced Concepts (SEGIS-AC) program, DOE is funding solar projects that are targeting ways to develop power electronics and build smarter, more interactive systems and components so that solar energy can be integrated into the electric power

  4. Reduced AC losses in HTS coated conductors

    DOE Patents [OSTI]

    Ashworth, Stephen P.

    2004-10-05

    Methods for reducing hysteresis losses in superconductor coated ribbons where a flux distribution is set into the superconductor coated ribbon prior to the application of alternating current.

  5. Construction of AC Motor Controllers for NOvA Experiment Upgrades

    SciTech Connect (OSTI)

    Cooley, Patrick; ,

    2011-08-04

    I have been constructing Alternating Current (AC) motor controllers for manipulation of particle beam detectors. The capability and reliability of these motor controllers are essential to the Laboratory's mission of accurate analysis of the particle beam's position. The device is moved in and out of the beam's path by the motor controller followed by the Neutrinos at the Main Injector Off-Axis {nu}{sub e} Appearance (NOvA) Experiment further down the beam pipe. In total, I built and tested ten ac motor controllers for new beam operations in the NOvA experiment. These units will prove to be durable and provide extremely accurate beam placement for NOvA Experiment far into the future.

  6. AC/RF Superconductivity

    SciTech Connect (OSTI)

    Ciovati, Gianluigi

    2015-02-01

    This contribution provides a brief introduction to AC/RF superconductivity, with an emphasis on application to accelerators. The topics covered include the surface impedance of normal conductors and superconductors, the residual resistance, the field dependence of the surface resistance, and the superheating field.

  7. Lowering of the firing voltage and reducing of the discharge delay time in alternating current plasma display panels by a discontinuous spin-coated LaB{sub 6} film on the MgO protective layer

    SciTech Connect (OSTI)

    Deng, Jiang; Zeng, Baoqing; Zhongshan Institute, University of Electronic Science and Technology of China, 528402 zhongshan ; Wang, Xiaoju; Lin, Zulun; Qi, Kangcheng; Cao, Guichuan

    2014-03-15

    A spin coated LaB{sub 6} discontinuous film is covered on MgO protective layer to improve the discharge performance of alternating current plasma display panels. Under the premise of high transmittance of more than 90%, a very small amount of polycrystal LaB{sub 6} powders added in an organic solvent are chosen as the coating solution. The discharge characteristics results show that with 250 torr 5% Xe-Ne pressure, the firing voltage and discharge delay time of the test panel with LaB{sub 6}/MgO double protective layer are decreased by 13.4% and 36.5%, respectively, compared with that of conventional MgO protective layer, likely owing to the low work function of LaB{sub 6.} Furthermore, the aging time of the proposed structure is comparable to that of pure MgO protective layer. Therefore, it will not increase the production costs and is highly suitable to be applied for alternating current plasma display panels with low electrical power consumption.

  8. Smart Grid EV Communication Module | Argonne National Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of electric vehicles (EVs) is the long period of time required to recharge EV batteries. While regular alternating current (AC) charging systems are sufficient for...

  9. Initial tests of an AC dipole for the Tevatron

    SciTech Connect (OSTI)

    Miyamoto, R.; Jansson, A.; Kopp, S.; Syphers, M.; /Fermilab

    2006-06-01

    The AC dipole is a device to diagnose transverse motions of a beam. It can achieve large-amplitude oscillations without two inevitable problems of conventional kicker/pinger magnets: decoherence and emittance growth. While not the first synchrotron to operate with an AC dipole, the Tevatron can now make use of its recently upgraded BPM system, providing unprecedented resolution for use with an AC dipole, to measure both linear and nonlinear properties of the accelerator. Plans are to provide AC dipole systems for both transverse degrees of freedom. Preliminary tests have been done using an audio power amplifier with an existing vertical pinger magnet, producing oscillation amplitudes up to 2{sigma} at 150 GeV. In this paper, we will present the configuration of this system. We also show the analysis of a first few data sets, including the direct measurement of beta functions at BPM locations.

  10. AC Resistance measuring instrument

    DOE Patents [OSTI]

    Hof, Peter J.

    1983-01-01

    An auto-ranging AC resistance measuring instrument for remote measurement of the resistance of an electrical device or circuit connected to the instrument includes a signal generator which generates an AC excitation signal for application to a load, including the device and the transmission line, a monitoring circuit which provides a digitally encoded signal representing the voltage across the load, and a microprocessor which operates under program control to provide an auto-ranging function by which range resistance is connected in circuit with the load to limit the load voltage to an acceptable range for the instrument, and an auto-compensating function by which compensating capacitance is connected in shunt with the range resistance to compensate for the effects of line capacitance. After the auto-ranging and auto-compensation functions are complete, the microprocessor calculates the resistance of the load from the selected range resistance, the excitation signal, and the load voltage signal, and displays of the measured resistance on a digital display of the instrument.

  11. AC resistance measuring instrument

    DOE Patents [OSTI]

    Hof, P.J.

    1983-10-04

    An auto-ranging AC resistance measuring instrument for remote measurement of the resistance of an electrical device or circuit connected to the instrument includes a signal generator which generates an AC excitation signal for application to a load, including the device and the transmission line, a monitoring circuit which provides a digitally encoded signal representing the voltage across the load, and a microprocessor which operates under program control to provide an auto-ranging function by which range resistance is connected in circuit with the load to limit the load voltage to an acceptable range for the instrument, and an auto-compensating function by which compensating capacitance is connected in shunt with the range resistance to compensate for the effects of line capacitance. After the auto-ranging and auto-compensation functions are complete, the microprocessor calculates the resistance of the load from the selected range resistance, the excitation signal, and the load voltage signal, and displays of the measured resistance on a digital display of the instrument. 8 figs.

  12. Diagnostics of the Fermilab Tevatron using an AC dipole

    SciTech Connect (OSTI)

    Miyamoto, Ryoichi; /Texas U.

    2008-08-01

    The Fermilab Tevatron is currently the world's highest energy colliding beam facility. Its counter-rotating proton and antiproton beams collide at 2 TeV center-of-mass. Delivery of such intense beam fluxes to experiments has required improved knowledge of the Tevatron's beam optical lattice. An oscillating dipole magnet, referred to as an AC dipole, is one of such a tool to non-destructively assess the optical properties of the synchrotron. We discusses development of an AC dipole system for the Tevatron, a fast-oscillating (f {approx} 20 kHz) dipole magnet which can be adiabatically turned on and off to establish sustained coherent oscillations of the beam particles without affecting the transverse emittance. By utilizing an existing magnet and a higher power audio amplifier, the cost of the Tevatron AC dipole system became relatively inexpensive. We discuss corrections which must be applied to the driven oscillation measurements to obtain the proper interpretation of beam optical parameters from AC dipole studies. After successful operations of the Tevatron AC dipole system, AC dipole systems, similar to that in the Tevatron, will be build for the CERN LHC. We present several measurements of linear optical parameters (beta function and phase advance) for the Tevatron, as well as studies of non-linear perturbations from sextupole and octupole elements.

  13. Digital ac monitor

    DOE Patents [OSTI]

    Hart, G.W.; Kern, E.C. Jr.

    1987-06-09

    An apparatus and method is provided for monitoring a plurality of analog ac circuits by sampling the voltage and current waveform in each circuit at predetermined intervals, converting the analog current and voltage samples to digital format, storing the digitized current and voltage samples and using the stored digitized current and voltage samples to calculate a variety of electrical parameters; some of which are derived from the stored samples. The non-derived quantities are repeatedly calculated and stored over many separate cycles then averaged. The derived quantities are then calculated at the end of an averaging period. This produces a more accurate reading, especially when averaging over a period in which the power varies over a wide dynamic range. Frequency is measured by timing three cycles of the voltage waveform using the upward zero crossover point as a starting point for a digital timer. 24 figs.

  14. Digital ac monitor

    DOE Patents [OSTI]

    Hart, George W.; Kern, Jr., Edward C.

    1987-06-09

    An apparatus and method is provided for monitoring a plurality of analog ac circuits by sampling the voltage and current waveform in each circuit at predetermined intervals, converting the analog current and voltage samples to digital format, storing the digitized current and voltage samples and using the stored digitized current and voltage samples to calculate a variety of electrical parameters; some of which are derived from the stored samples. The non-derived quantities are repeatedly calculated and stored over many separate cycles then averaged. The derived quantities are then calculated at the end of an averaging period. This produces a more accurate reading, especially when averaging over a period in which the power varies over a wide dynamic range. Frequency is measured by timing three cycles of the voltage waveform using the upward zero crossover point as a starting point for a digital timer.

  15. Compact AC susceptometer for fast sample characterization down to 0.1 K

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Compact AC susceptometer for fast sample characterization down to 0.1 K Citation Details In-Document Search Title: Compact AC susceptometer for fast sample characterization down to 0.1 K We report a new design of an AC magnetic susceptometer compatible with the Physical Properties Measurement System (PPMS) by Quantum Design, as well as with its adiabatic demagnetization refrigerator option. With the elaborate compact design, the susceptometer allows simple

  16. Alternating current magnetic susceptibility and heat dissipation by Mn{sub 1?x}Zn{sub x}Fe{sub 2}O{sub 4} nanoparticles for hyperthermia treatment

    SciTech Connect (OSTI)

    Kondo, T.; Mori, K.; Hachisu, M.; Yamazaki, T.; Ichiyanagi, Y.; Okamoto, D.; Watanabe, M.; Gonda, K.; Tada, H.; Hamada, Y.; Takano, M.; Ohuchi, N.

    2015-05-07

    Mn-Zn ferrite, Mn{sub 1?x}Zn{sub x}Fe{sub 2}O{sub 4} nanoparticles encapsulated in amorphous SiO{sub 2} were prepared using our original wet chemical method. X-ray diffraction patterns confirmed that the diameters of these particles were within 730?nm. Magnetization measurements for various sample compositions revealed that the saturation magnetization (M{sub s}) of 7?nm particles was maximum for the x?=?0.2 sample. AC magnetic susceptibility measurements were performed for Mn{sub 0.8}Zn{sub 0.2}Fe{sub 2}O{sub 4} (x?=?0.2) samples with 1330?nm particles. The peak of the imaginary part of the magnetic susceptibility ?? shifted to higher temperatures as the particle size increased. An AC field was found to cause the increase in temperature, with the 18?nm particles exhibiting the highest temperature increase, as expected. In addition, in vitro experiments were carried out to study the hyperthermia effects of Mn{sub 1?x}Zn{sub x}Fe{sub 2}O{sub 4} (x?=?0.2, 18?nm) particles on human cancer cells.

  17. 1997RMxAC...6..151L

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    RMxAC...6..151L 1997RMxAC...6..151L 1997RMxAC...6..151L

  18. AC Solar Inc | Open Energy Information

    Open Energy Info (EERE)

    Solar Inc Jump to: navigation, search Logo: AC Solar Inc Name: AC Solar Inc Address: P.O. Box 128 Place: Florence, Colorado Zip: 81226 Region: Rockies Area Sector: Solar Product:...

  19. An Annotated Bibliography of High-Voltage Direct-Current Transmission and Flexible AC Transmission (FACTS) Devices, 1991-1993.

    SciTech Connect (OSTI)

    Litzenberger, Wayne; Lava, Val

    1994-08-01

    References are contained for HVDC systems, converter stations and components, overhead transmission lines, cable transmission, system design and operations, simulation of high voltage direct current systems, high-voltage direct current installations, and flexible AC transmission system (FACTS).

  20. Effect of AC target power on AlN film quality

    SciTech Connect (OSTI)

    Knisely, Katherine Grosh, Karl

    2014-09-01

    The influence of alternating current (AC) target power on film stress, roughness, and x-ray diffraction rocking curve full width half maximum (FWHM) was examined for AlN films deposited using S-gun magnetron sputtering on insulative substrates consisting of Si wafers with 575 nm thermal oxide. As the AC target power was increased from 5 to 8 kW, the deposition rate increased from 9.3 to 15.9 A/s, film stress decreased from 81 to −170 MPa, and the rocking curve FWHM increased from 0.98 to 1.03°. AlN film behavior is observed to change with target life; films deposited at 200 kWh target life were approximately 40 MPa more compressive and had 0.02° degree higher rocking curve FWHM values than films deposited at 130 kWh. AlN films deposited in two depositions were compared with films deposited in a single deposition, in order to better characterize the growth behavior and properties of AlN films deposited on an existing AlN film, which is not well understood. Two deposition films, when compared with single deposition films, showed no variation in residual stress trends or grain size behavior, but the average film roughness increased from 0.7 to 1.4 nm and rocking curve FWHM values increased by more than 0.25°.

  1. AC 95 - selected readings

    SciTech Connect (OSTI)

    1995-12-31

    Reports are presented on energy efficiency and conservation in residential buildings. Topics include housing and energy linkages; the people factor; low-income initiatives; green visions; utility programs; affordable comfort; housing as a system; and pressures and air flow in buildings.

  2. On-Chip AC self-test controller

    DOE Patents [OSTI]

    Flanagan, John D.; Herring, Jay R.; Lo, Tin-Chee

    2009-09-29

    A system for performing AC self-test on an integrated circuit that includes a system clock for normal operation is provided. The system includes the system clock, self-test circuitry, a first and second test register to capture and launch test data in response to a sequence of data pulses, and a logic circuit to be tested. The self-test circuitry includes an AC self-test controller and a clock splitter. The clock splitter generates the sequence of data pulses including a long data capture pulse followed by an at speed data launch pulse and an at speed data capture pulse followed by a long data launch pulse. The at speed data launch pulse and the at speed data capture pulse are generated for a common cycle of the system clock.

  3. Learn More About Interconnections | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    North America is comprised of two major and three minor alternating current (AC) power ... North America is comprised of two major and three minor alternating current (AC) power ...

  4. Alameda-Contra Costa Transit District (AC Transit) Fuel Cell...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    (AC Transit) Fuel Cell Transit Buses: Preliminary Evaluation Results This report provides an evaluation of three prototype fuel cell-powered transit buses operating at AC ...

  5. Solar Electric Grid Integration - Advanced Concepts (SEGIS-AC...

    Energy Savers [EERE]

    Electric Grid Integration - Advanced Concepts (SEGIS-AC) Funding Opportunity Solar Electric Grid Integration - Advanced Concepts (SEGIS-AC) Funding Opportunity Through the Solar ...

  6. Oscillation phenomena of a plasma produced by an AC driven hot cathode

    SciTech Connect (OSTI)

    Takahashi, Yuki; Miyamoto, Naoki; Kasuya, Toshiro; Wada, Motoi

    2012-11-06

    Amplitude of oscillating discharge current has been measured for Bernas-type ion source equipped with an alternating current heated hot tungsten filament cathode. Measurements have been made by changing the filament diameter from 0.2 mm to 0.7 mm, and by changing the DC discharge current from 0.1 A to 1.5 A. The fluctuation amplitude of the discharge current was found decreased as the diameter of the filament was enlarged. The fluctuation amplitude took the minimum value at a frequency from several hundred Hz to 1 kHz depending upon the filament diameter and DC discharge current. For example, the relative oscillation amplitude was the smallest at 1 kHz for 0.7 mm diameter filament. Increase in discharge current had reduced the minimum oscillation amplitude, and increased the frequency at which the oscillating amplitude took the minimum. Fundamental mechanisms relevant to these characteristics of oscillation amplitude of discharge current from an AC driven hot cathode filament are discussed.

  7. 7AC Technologies, Inc. | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    7AC Technologies, Inc. America's Next Top Energy Innovator Challenge 498 likes 7AC Technologies, Inc. National Renewable Energy Laboratory Air conditioning is a very large contributor to U.S. and world energy consumption. Heating and cooling costs for commercial and industrial buildings exceed 25 percent of U.S. primary energy consumption (cooling alone accounts for 4.5 Quads out of 40 Quads) and typically accounts for almost half of a building's operating costs. Air conditioning is also a

  8. Three phase AC motor controller

    DOE Patents [OSTI]

    Vuckovich, Michael; Wright, Maynard K.; Burkett, John P.

    1984-03-20

    A motor controller for a three phase AC motor (10) which is adapted to operate bidirectionally from signals received either from a computer (30) or a manual control (32). The controller is comprised of digital logic circuit means which implement a forward and reverse command signal channel (27, 29) for the application of power through the forward and reverse power switching relays (16, 18, 20, 22). The digital logic elements are cross coupled to prevent activation of both channels simultaneously and each includes a plugging circuit (65, 67) for stopping the motor upon the removal of control signal applied to one of the two channels (27, 29) for a direction of rotation desired. Each plugging circuit (65, 67) includes a one-shot pulse signal generator (88, 102) which outputs a single pulse signal of predetermined pulsewidth which is adapted to inhibit further operation of the application of power in the channel which is being activated and to apply a reversal command signal to the other channel which provides a reversed phase application of power to the motor for a period defined by the pulse-width output of the one-shot signal generator to plug the motor (10) which will then be inoperative until another rotational command signal is applied to either of the two channels.

  9. Contactless measurement of alternating current conductance in quantum Hall structures

    SciTech Connect (OSTI)

    Drichko, I. L.; Diakonov, A. M.; Malysh, V. A.; Smirnov, I. Yu.; Ilyinskaya, N. D.; Usikova, A. A.; Galperin, Y. M.; Kummer, M.; Känel, H. von

    2014-10-21

    We report a procedure to determine the frequency-dependent conductance of quantum Hall structures in a broad frequency domain. The procedure is based on the combination of two known probeless methods—acoustic spectroscopy and microwave spectroscopy. By using the acoustic spectroscopy, we study the low-frequency attenuation and phase shift of a surface acoustic wave in a piezoelectric crystal in the vicinity of the electron (hole) layer. The electronic contribution is resolved using its dependence on a transverse magnetic field. At high frequencies, we study the attenuation of an electromagnetic wave in a coplanar waveguide. To quantitatively calibrate these data, we use the fact that in the quantum-Hall-effect regime the conductance at the maxima of its magnetic field dependence is determined by extended states. Therefore, it should be frequency independent in a broad frequency domain. The procedure is verified by studies of a well-characterized p-SiGe/Ge/SiGe heterostructure.

  10. Superconducting magnetic energy storage for asynchronous electrical systems

    DOE Patents [OSTI]

    Boenig, Heinrich J.

    1986-01-01

    A superconducting magnetic energy storage coil connected in parallel between converters of two or more ac power systems provides load leveling and stability improvement to any or all of the ac systems. Control is provided to direct the charging and independently the discharging of the superconducting coil to at least a selected one of the ac power systems.

  11. Allianz Climate Solutions ACS GmbH | Open Energy Information

    Open Energy Info (EERE)

    Allianz Climate Solutions ACS GmbH Jump to: navigation, search Name: Allianz Climate Solutions (ACS) GmbH Place: Munich, Germany Zip: 80802 Product: Munich-based subsidiary of...

  12. Radionuclide calorimeter system

    DOE Patents [OSTI]

    Donohoue, T.P.; Oertel, C.P.; Tyree, W.H.; Valdez, J.L.

    1991-11-26

    A circuit for measuring temperature differentials in a calorimeter is disclosed. The temperature differential between the reference element and sample element containing a radioactive material is measured via a Wheatstone bridge arrangement of thermistors. The bridge is driven with an alternating current on a pulsed basis to maintain the thermal floor of the calorimeter at a low reference value. A lock-in amplifier connected to the bridge phase locks a signal from the bridge to the input pulsed AC signal to provide a DC voltage. The DC voltage is sampled over time and provided to a digital computer. The digital computer, using curve fitting algorithms, will derive a function for the sample data. From the function, an equilibrium value for the temperature may be calculated. 7 figures.

  13. Radionuclide calorimeter system

    DOE Patents [OSTI]

    Donohoue, Thomas P.; Oertel, Christopher P.; Tyree, William H.; Valdez, Joe L.

    1991-11-26

    A circuit for measuring temperature differentials in a calorimeter is disclosed. The temperature differential between the reference element and sample element containing a radioactive material is measured via a wheatstone bridge arrangement of thermistors. The bridge is driven with an alternating current on a pulsed basis to maintain the thermal floor of the calorimeter at a low reference value. A lock-in amplifier connected to the bridge phase locks a signal from the bridge to the input pulsed AC signal to provide a DC voltage. The DC voltage is sampled over time and provided to a digital computer. The digital computer, using curve fitting algorithms, will derive a function for the sample data. From the function, an equilibrium value for the temperature may be calculated.

  14. Comparative Study of DC and AC Microgrids in Commercial Buildings Across Different Climates and Operating Profiles: Preprint

    SciTech Connect (OSTI)

    Fregosi, D.; Ravula, S.; Brhlik, D.; Saussele, J.; Frank, S.; Bonnema, E.; Scheib, J.; Wilson, E.

    2015-04-22

    Bosch has developed and demonstrated a novel DC microgrid system designed to maximize utilization efficiency for locally generated photovoltaic energy while offering high reliability, safety, redundancy, and reduced cost compared to equivalent AC systems. Several demonstration projects validating the system feasibility and expected efficiency gains have been completed and additional ones are in progress. This work gives an overview of the Bosch DC microgrid system and presents key results from a large simulation study done to estimate the energy savings of the Bosch DC microgrid over conventional AC systems. The study examined the system performance in locations across the United States for several commercial building types and operating profiles and found that the Bosch DC microgrid uses generated PV energy 6%–8% more efficiently than traditional AC systems.

  15. Enhanced distributed energy resource system

    DOE Patents [OSTI]

    Atcitty, Stanley; Clark, Nancy H.; Boyes, John D.; Ranade, Satishkumar J.

    2007-07-03

    A power transmission system including a direct current power source electrically connected to a conversion device for converting direct current into alternating current, a conversion device connected to a power distribution system through a junction, an energy storage device capable of producing direct current connected to a converter, where the converter, such as an insulated gate bipolar transistor, converts direct current from an energy storage device into alternating current and supplies the current to the junction and subsequently to the power distribution system. A microprocessor controller, connected to a sampling and feedback module and the converter, determines when the current load is higher than a set threshold value, requiring triggering of the converter to supply supplemental current to the power transmission system.

  16. Contract No. DE-AC02-07CH11358 Section J Appendix G Contract Modification No. 0183

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Section J Appendix G Contract Modification No. 0183 ATTACHMENT J.7 Contract No. DE-AC02-07CH11358 J-G-1 APPENDIX G PURCHASING SYSTEM REQUIREMENTS Applicable to the Operation of AMES Laboratory Contract No. DE-AC02-07CH11358 Section J Appendix G Contract Modification No. 0183 Appendix G Purchasing System Requirements This Appendix and Clause 1.154, "Contractor Purchasing System," sets forth DOE requirements applicable to the Purchasing System established under the Contract for the

  17. DOE-HDBK-1011/2-92 | Department of Energy

    Office of Environmental Management (EM)

    The handbook includes information on alternating current (AC) and direct current (DC) theory, circuits, motors, and generators; AC power and reactive components; batteries; AC and ...

  18. Verification/acceptance test report for the Acromag Calibration System for TMACS

    SciTech Connect (OSTI)

    Fordham, C.R.

    1995-04-25

    This document provides the Verification/Acceptance Test Report for the Acromag Calibration System (ACS) for the Tank Monitor and Control System. ACS will be implemented to check the calibration of the thermocouple input modules. Purpose of this document is to show that the ACS satisfies the system requirements in WHC-SD-WM-CSRS-009 (WHC 1993b).

  19. System Evaluation and Economic Analysis of a Nuclear Reactor Powered High-Temperature Electrolysis Hydrogen-Production Plant

    SciTech Connect (OSTI)

    E. A. Harvego; M. G. McKellar; M. S. Sohal; J. E. O'Brien; J. S. Herring

    2010-06-01

    A reference design for a commercial-scale high-temperature electrolysis (HTE) plant for hydrogen production was developed to provide a basis for comparing the HTE concept with other hydrogen production concepts. The reference plant design is driven by a high-temperature helium-cooled nuclear reactor coupled to a direct Brayton power cycle. The reference design reactor power is 600 MWt, with a primary system pressure of 7.0 MPa, and reactor inlet and outlet fluid temperatures of 540°C and 900°C, respectively. The electrolysis unit used to produce hydrogen includes 4,009,177 cells with a per-cell active area of 225 cm2. The optimized design for the reference hydrogen production plant operates at a system pressure of 5.0 MPa, and utilizes an air-sweep system to remove the excess oxygen that is evolved on the anode (oxygen) side of the electrolyzer. The inlet air for the air-sweep system is compressed to the system operating pressure of 5.0 MPa in a four-stage compressor with intercooling. The alternating current (AC) to direct current (DC) conversion efficiency is 96%. The overall system thermal-to-hydrogen production efficiency (based on the lower heating value of the produced hydrogen) is 47.1% at a hydrogen production rate of 2.356 kg/s. An economic analysis of this plant was performed using the standardized H2A Analysis Methodology developed by the Department of Energy (DOE) Hydrogen Program, and using realistic financial and cost estimating assumptions. The results of the economic analysis demonstrated that the HTE hydrogen production plant driven by a high-temperature helium-cooled nuclear power plant can deliver hydrogen at a competitive cost. A cost of $3.23/kg of hydrogen was calculated assuming an internal rate of return of 10%.

  20. Alameda-Contra Costa Transit District (AC Transit) Fuel Cell...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Report - Appendices Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Third Evaluation Report - Appendices This report describes operations at ...

  1. Alameda-Contra Costa Transit District (AC Transit) Fuel Cell...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Report Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Third Evaluation Report This report describes operations at Alameda-Contra Costa Transit district ...

  2. DE-AC05-06OR23100

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... (NOV 2004) ...... 8 B.5 DETERMINATION OF AWARD FEE EARNED (NOV 2004) ...... 9 DE-AC05-06OR23100 Section B ...

  3. Light Absorption of Primary Organic Aerosol Paper Named ACS Editors...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Absorption of Primary Organic Aerosol Paper Named ACS Editors' Choice For original submission and image(s), see ARM Research Highlights http:www.arm.govsciencehighlights...

  4. Power Systems Engineer | Princeton Plasma Physics Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Knowledge of AC Power, power conversion, DC circuits, motors, power technology, and industrial control systems. * Uses independent judgment in applying standard engineering...

  5. OAK RIDGE NATIONAL LABORATORY SPALLATION NEUTRON SOURCE ELECTRICAL SYSTEMS AVAILABILITY AND IMPROVEMENTS

    SciTech Connect (OSTI)

    Cutler, Roy I; Peplov, Vladimir V; Wezensky, Mark W; Norris, Kevin Paul; Barnett, William E; Hicks, Jim; Weaver, Joey T; Moss, John; Rust, Kenneth R; Mize, Jeffery J; Anderson, David E

    2011-01-01

    SNS electrical systems have been operational for 4 years. System availability statistics and improvements are presented for AC electrical systems, DC and pulsed power supplies and klystron modulators.

  6. System and method of adjusting the equilibrium temperature of an inductively-heated susceptor

    DOE Patents [OSTI]

    Matsen, Marc R; Negley, Mark A; Geren, William Preston

    2015-02-24

    A system for inductively heating a workpiece may include an induction coil, at least one susceptor face sheet, and a current controller coupled. The induction coil may be configured to conduct an alternating current and generate a magnetic field in response to the alternating current. The susceptor face sheet may be configured to have a workpiece positioned therewith. The susceptor face sheet may be formed of a ferromagnetic alloy having a Curie temperature and being inductively heatable to an equilibrium temperature approaching the Curie temperature in response to the magnetic field. The current controller may be coupled to the induction coil and may be configured to adjust the alternating current in a manner causing a change in at least one heating parameter of the susceptor face sheet.

  7. A complete electrical hazard classification system and its application

    SciTech Connect (OSTI)

    Gordon, Lloyd B; Cartelli, Laura

    2009-01-01

    The Standard for Electrical Safety in the Workplace, NFPA 70E, and relevant OSHA electrical safety standards evolved to address the hazards of 60-Hz power that are faced primarily by electricians, linemen, and others performing facility and utility work. This leaves a substantial gap in the management of electrical hazards in Research and Development (R&D) and specialized high voltage and high power equipment. Examples include lasers, accelerators, capacitor banks, electroplating systems, induction and dielectric heating systems, etc. Although all such systems are fed by 50/60 Hz alternating current (ac) power, we find substantial use of direct current (dc) electrical energy, and the use of capacitors, inductors, batteries, and radiofrequency (RF) power. The electrical hazards of these forms of electricity and their systems are different than for 50160 Hz power. Over the past 10 years there has been an effort to develop a method of classifying all of the electrical hazards found in all types of R&D and utilization equipment. Examples of the variation of these hazards from NFPA 70E include (a) high voltage can be harmless, if the available current is sufficiently low, (b) low voltage can be harmful if the available current/power is high, (c) high voltage capacitor hazards are unique and include severe reflex action, affects on the heart, and tissue damage, and (d) arc flash hazard analysis for dc and capacitor systems are not provided in existing standards. This work has led to a comprehensive electrical hazard classification system that is based on various research conducted over the past 100 years, on analysis of such systems in R&D, and on decades of experience. Initially, national electrical safety codes required the qualified worker only to know the source voltage to determine the shock hazard. Later, as arc flash hazards were understood, the fault current and clearing time were needed. These items are still insufficient to fully characterize all types of electrical hazards. The new comprehensive electrical hazard classification system uses a combination of voltage, shock current available, fault current available, power, energy, and waveform to classify all forms of electrical hazards. Based on this electrical hazard classification system, many new tools have been developed, including (a) work controls for these hazards, (b) better selection of PPE for R&D work, (c) improved training, and (d) a new Severity Ranking Tool that is used to rank electrical accidents and incidents with various forms of electrical energy.

  8. Motion characteristics of long ac arcs in atmospheric air

    SciTech Connect (OSTI)

    Gu Shanqiang; He Jinliang; Zeng Rong; Zhang Bo; Xu Guozheng; Chen Weijiang

    2007-01-29

    Experiments on the motion of long alternating current arcs in atmospheric air show that the anode and cathode arc roots have different motion characteristics because of different formation mechanisms. During a half cycle of the arc current, the anode arc root moves towards the direction of magnetic force and occasionally has a jumping motion, while the cathode arc root moves sufficiently slow to consider it stationary and hardly has any jump. The arc column has a complex shape and moves under the drive of the magnetic force and is also quickened by the lower arc root.

  9. Graphene-coated coupling coil for AC resistance reduction

    DOE Patents [OSTI]

    Miller, John M

    2014-03-04

    At least one graphene layer is formed to laterally surround a tube so that the basal plane of each graphene layer is tangential to the local surface of the tube on which the graphene layer is formed. An electrically conductive path is provided around the tube for providing high conductivity electrical path provided by the basal plane of each graphene layer. The high conductivity path can be employed for high frequency applications such as coupling coils for wireless power transmission to overcome skin depth effects and proximity effects prevalent in high frequency alternating current paths.

  10. Contract No. DE-AC27-10RV15051

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    No. DE-AC27-10RV15051 Modification No. 118 SF-30 Continuation Page 2 of 3 14. Description of AmendmentModification Continued: 1. Section B.1, Type of Contract - Items Being...

  11. Contract Number DE-AC27-10RV15051

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Pages i and H-32 Section J, Attachment 7, Performance Evaluation and Measurement Plan, Page J-127 222-S LAS&T Contract No. DE-AC27-10RV15051 Conformed thru Contract...

  12. Compact AC susceptometer for fast sample characterization down...

    Office of Scientific and Technical Information (OSTI)

    Compact AC susceptometer for fast sample characterization down to 0.1 K Citation Details ... down to 0.1 K is demonstrated using several superconducting and magnetic materials. ...

  13. Contract DE-AC04-94AL85000

    National Nuclear Security Administration (NNSA)

    DE-AC04-94AL85000 Modification M508 Attachment 1 SECTION J APPENDIX C Special Bank Account Agreement (Updated Mod M271, M461, M497, M508) Intentionally left blank for Internet...

  14. Contract DE-AC04-94AL85000

    National Nuclear Security Administration (NNSA)

    DE-AC04-94AL85000 Modification M508 Attachment 1 SECTION J APPENDIX C Special Bank Account Agreement (Updated Mod M271, M461, M497, M508) Intentionally left blank for Internet posting purposes

  15. AC Transit Demos Three Prototype Fuel Cell Buses | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AC Transit Demos Three Prototype Fuel Cell Buses AC Transit Demos Three Prototype Fuel Cell Buses Fact sheet describes the study being conducted on fuel cell buses at AC Transit. PDF icon 39441.pdf More Documents & Publications Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Third Evaluation Report - Appendices Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Preliminary Evaluation Results SunLine Expands Horizons with Fuel Cell Bus

  16. Rotor dynamic analysis of GCEP (Gas Centrifuge Enrichment Plant) Tails Withdrawal Test Facility AC-12 compressor

    SciTech Connect (OSTI)

    Spencer, J.W.

    1982-01-22

    The reliable operation of the centrifugal compressors utilized in the gaseous diffusion process is of great importance due to the critical function of these machines in product and tails withdrawal, cascade purge and evacuation processes, the purge cascade and product booster applications. The same compressors will be used in equally important applications within the Gas Centrifuge Enrichment Plant (GCEP). In response to concern over the excessive vibration exhibited by the AC-12 compressor in the No. 3 position of the GCEP Tails Withdrawal Test Facility, a rotor-bearing dynamic analysis was performed on the compressor. This analysis included the acquisition and reduction of compressor vibration data, characterization and modeling of the rotorbearing system, a computer dynamic study, and recommendations for machine modification. The compressor dynamic analysis was performed for rotor speeds of 9000 rpm and 7200 to 7800 rpm, which includes all possible opreating speeds of the compressor in the GCEP Test Facility. While the analysis was performed on this particular AC-12 compressor, the results should be pertinent to other AC-12 applications as well. Similar diagnostic and analytical techniques can be used to evaluate operation of other types of centrifugal compressors.

  17. AVTA: Aerovironment AC Level 2 Charging System Testing Results...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. ...

  18. AVTA: Clipper Creek AC Level 2 Charging System Testing Results...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. ...

  19. SUBMERGED GRAVEL SCRUBBER DEMONSTRATION AS A PASSIVE AIR CLEANER FOR CONTAINMENT VENTING AND PURGING WITH SODIUM AEROSOLS -- CSTF TESTS AC7 - AC10

    SciTech Connect (OSTI)

    HILLIARD, R K.; MCCORMACK, J D.; POSTMA, A K.

    1981-11-01

    Four large-scale air cleaning tests (AC7 - AC10) were performed in the Containment Systems Test Facility (CS'lF) to demonstrate the performance of a Submerged Gravel Scrubber for cleaning the effluent gas from a vented and purged breeder reactor containment vessel. The test article, comprised of a Submerged Gravel Scrubber (SGS) followed by a high efficiency fiber demister, had a design gas flow rate of 0.47 m{sup 3}/s (1000 ft{sup 3}/min) at a pressure drop of 9.0 kPa (36 in. H{sub 2}O). The test aerosol was sodium oxide, sodium hydroxide, or sodium carbonate generated in the 850-m{sup 3} CSTF vessel by continuously spraying sodium into the air-filled vessel while adding steam or carbon dioxide. Approximately 4500 kg (10,000 lb) of sodium was sprayed over a total period of 100 h during the tests. The SGS/Demister system was shown to be highly efficient (removing ~99.98% of the entering sodium aerosol mass), had a high mass loading capacity, and operated in a passive manner, with no electrical requirement. Models for predicting aerosol capture, gas cooling, and pressure drop are developed and compared with experimental results.

  20. ESBWR response to an extended station blackout/loss of all AC power

    SciTech Connect (OSTI)

    Barrett, A. J.; Marquino, W.

    2012-07-01

    U.S. federal regulations require light water cooled nuclear power plants to cope with Station Blackouts for a predetermined amount of time based on design factors for the plant. U.S. regulations define Station Blackout (SBO) as a loss of the offsite electric power system concurrent with turbine trip and unavailability of the onsite emergency AC power system. According to U.S. regulations, typically the coping period for an SBO is 4 hours and can be as long as 16 hours for currently operating BWR plants. Being able to cope with an SBO and loss of all AC power is required by international regulators as well. The U.S. licensing basis for the ESBWR is a coping period of 72 hours for an SBO based on U.S. NRC requirements for passive safety plants. In the event of an extended SBO (viz., greater than 72 hours), the ESBWR response shows that the design is able to cope with the event for at least 7 days without AC electrical power or operator action. ESBWR is a Generation III+ reactor design with an array of passive safety systems. The ESBWR primary success path for mitigation of an SBO event is the Isolation Condenser System (ICS). The ICS is a passive, closed loop, safety system that initiates automatically on a loss of power. Upon Station Blackout or loss of all AC power, the ICS begins removing decay heat from the Reactor Pressure Vessel (RPV) by (i) condensing the steam into water in heat exchangers located in pools of water above the containment, and (ii) transferring the decay heat to the atmosphere. The condensed water is then returned by gravity to cool the reactor again. The ICS alone is capable of maintaining the ESBWR in a safe shutdown condition after an SBO for an extended period. The fuel remains covered throughout the SBO event. The ICS is able to remove decay heat from the RPV for at least 7 days and maintains the reactor in a safe shutdown condition. The water level in the RPV remains well above the top of active fuel for the duration of the SBO event. Beyond 7 days, only a few simple actions are needed to cope with the SBO for an indefinite amount of time. The operation of the ICS as the primary success path for mitigation of an SBO, allows for near immediate plant restart once power is restored. (authors)

  1. Microsoft Word - DE-AC06-09RL15009 Section J.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    III Contract No. DE-AC06-09RL15009 Section J Page J-1 Section J Part III - List of Attachments Table of Contents Section Title Page No. J.1 Covered Site Contractors/Sub-Contractors J-2 J.2 Hardware and Software System Requirements J-4 J.3 Wage Determination No. 2005-2569, Revision No. 8 J-5 J.4 Legal Management Plan J-16 (to be inserted 60 days after award) J.5 Continuity of Operations Plan J-17 (to be inserted 60 days after award) J.6 List of Applicable DOE Directives and Contractor

  2. Modification No. M226 Contract No. DE-AC54-00AL66620

    National Nuclear Security Administration (NNSA)

    Modification No. M226 Contract No. DE-AC54-00AL66620 Page No. 2 of 2 The purpose of this Modification is to incorporate the following: A. Replace Part III, LIST OF DOCUMENTS, EXHIBITS, AND OTHER ATTACHMENTS, Section J - LIST OF ATTACHMENTS, Appendix A - PERSONNEL APPENDIX in its entirety to update REIMBURSEMENT AUTHORIZATIONS, TABLE OF CONTENTS, to add "I. Exempt Compensatory Time" and "J. Additional Bonus for Non-Key Personnel" to Section I. COMPENSATION SYSTEM, and to

  3. Superconducting shielded core reactor with reduced AC losses

    DOE Patents [OSTI]

    Cha, Yung S.; Hull, John R.

    2006-04-04

    A superconducting shielded core reactor (SSCR) operates as a passive device for limiting excessive AC current in a circuit operating at a high power level under a fault condition such as shorting. The SSCR includes a ferromagnetic core which may be either closed or open (with an air gap) and extends into and through a superconducting tube or superconducting rings arranged in a stacked array. First and second series connected copper coils each disposed about a portion of the iron core are connected to the circuit to be protected and are respectively wound inside and outside of the superconducting tube or rings. A large impedance is inserted into the circuit by the core when the shielding capability of the superconducting arrangement is exceeded by the applied magnetic field generated by the two coils under a fault condition to limit the AC current in the circuit. The proposed SSCR also affords reduced AC loss compared to conventional SSCRs under continuous normal operation.

  4. AC Loss Analysis on the Superconducting Coupling Magnet in MICE

    SciTech Connect (OSTI)

    Wu, Hong; Wang, Li; Green, Michael; Li, LanKai; Xu, FengYu; Liu, XiaoKun; Jia, LinXinag

    2008-07-08

    A pair of coupling solenoids is used in MICE experiment to generate magnetic field which keeps the muons within the iris of thin RF cavity windows. The coupling solenoids have a 1.5-meter inner diameter and will produce 7.4 T peak magnetic field. Three types of AC losses in coupling solenoid are discussed. The affect of AC losses on the temperature distribution within the cold mass during charging and rapid discharging process is analyzed also. The analysis result will be further confirmed by the experiment of the prototype solenoid for coupling solenoid, which will be designed, fabricated and tested at ICST.

  5. Docket No. EERE-2011-BT-NOA-0067 and RIN Number 1904-AC52 Ex...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and RIN Number 1904-AC52 Ex parte Communication Docket No. EERE-2011-BT-NOA-0067 and RIN Number 1904-AC52 Ex parte Communication This memorandum for the record provides a ...

  6. WTP Contract Section F Contract No. DE-AC27-01RV14136 Conformed...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    F Contract No. DE-AC27-01RV14136 Conformed Thru Modification No. A143 F - i SECTION F DELIVERIES OR PERFORMANCE WTP Contract Section F Contract No. DE-AC27-01RV14136 Conformed Thru...

  7. Developing 226Ra and 227Ac age-dating techniques for nuclear...

    Office of Scientific and Technical Information (OSTI)

    Accepted Manuscript: Developing 226Ra and 227Ac age-dating techniques for nuclear ... Title: Developing 226Ra and 227Ac age-dating techniques for nuclear forensics to gain ...

  8. Energy Systems Integration: NREL + Advanced Energy (Fact Sheet), NREL (National Renewable Energy Laboratory)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ADVANCED ENERGY Solar inverter manufacturer Advanced Energy Industries is using the ESIF's Power Systems Integration Laboratory (PSIL) to test its advanced photovoltaic (PV) inverter technology with the ESIF's power hardware-in-the-loop system and megawatt- scale grid simulators. Solar inverters are responsible for a number of critical functions within a solar PV system, including converting the direct current output into alternating current for the grid. Advanced Energy's inverter will help

  9. Mission Support Contract Contract No. DE-AC06-09RL14728 Section J

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract No. DE-AC06-09RL14728 Section J Modification 108 Mission Support Contract Contract No. DE-AC06-09RL14728 Section J Modification 108 Mission Support Contract Contract No. DE-AC06-09RL14728 Section J Modification 108 Mission Support Contract Contract No. DE-AC06-09RL14728 Section J Modification 108

  10. ACS National Meeting (San Diego, CA) - JCAP

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... progress report on efforts to rationally design new catalyst systems capable of yielding ... Clifford Kubiak, "Molecular Electrocatalysts for the Reduction of CO2 and the Effects of ...

  11. AC Losses in the MICE Channel Magnets -- Is This a Curse or aBlessing?

    SciTech Connect (OSTI)

    Green, M.A.; Wu, H.; Wang, L.; Kai, L.L.; Jia, L.X.; Yang, S.Q.

    2008-01-31

    This report discusses the AC losses in the MICE channelmagnets during magnet charging and discharging. This report talks aboutthe three types of AC losses in the MICE magnets; the hysteretic AC lossin the superconductor, the coupling AC loss in the superconductor and theeddy current AC loss in the magnet mandrel and support structure. AClosses increase the heat load at 4 K. The added heat load increases thetemperature of the second stage of the cooler. In addition, AC losscontributes to the temperature rise between the second stage cold headand the high field point of the magnet, which is usually close to themagnet hot spot. These are the curses of AC loss in the MICE magnet thatcan limit the rate at which the magnet can be charge or discharged. Ifone is willing to allow some of the helium that is around the magnet toboil away during a magnet charge or discharge, AC losses can become ablessing. The boil off helium from the AC losses can be used to cool theupper end of the HTS leads and the surrounding shield. The AC losses arepresented for all three types of MICE magnets. The AC loss temperaturedrops within the coupling magnet are presented as an example of how boththe curse and blessing of the AC losses can be combined.

  12. DE-AC05-06OR23100 Section H

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AC05-06OR23100 Section H - Page 1 of 29 PART I - SCHEDULE SECTION H SPECIAL CONTRACT REQUIREMENTS H.1 CONSECUTIVE NUMBERING (MAY 1997)......................................................................... 4 H.2 MODIFICATION AUTHORITY (MAY 1997) ....................................................................... 4 H.3 OVERSIGHT OF CONTRACTOR (OCT 2004)..................................................................... 4 H.4 SMALL BUSINESS SUBCONTRACTING PLAN (SEPT

  13. Radiation Safety System

    SciTech Connect (OSTI)

    Vylet, Vaclav; Liu, James C.; Walker, Lawrence S.; /Los Alamos

    2012-04-04

    The goal of this work is to provide an overview of a Radiation safety system (RSS) designed for protection from prompt radiation hazard at accelerator facilities. RSS design parameters, functional requirements and constraints are derived from hazard analysis and risk assessment undertaken in the design phase of the facility. The two main subsystems of a RSS are access control system (ACS) and radiation control system (RCS). In this text, a common approach to risk assessment, typical components of ACS and RCS, desirable features and general design principles applied to RSS are described.

  14. Development of a New Class of Low Cost, High Frequency Link Direct DC to AC Converters for Solid Oxide Fuel Cells (SOFC)

    SciTech Connect (OSTI)

    Prasad Enjeti; J.W. Howze

    2003-12-01

    This project proposes to design and develop a new class of power converters (direct DC to AC) to drastically improve performance and optimize the cost, size, weight and volume of the DC to AC converter in SOFC systems. The proposed topologies employ a high frequency link; direct DC to AC conversion approach. The direct DC to AC conversion approach is more efficient and operates without an intermediate dc-link stage. The absence of the dc-link, results in the elimination of bulky, aluminum electrolytic capacitors, which in turn leads to a reduction in the cost, volume, size and weight of the power electronic converter. The feasibility of two direct DC to AC converter topologies and their suitability to meet SECA objectives will be investigated. Laboratory proto-type converters (3-5kW) will be designed and tested in Phase-1. A detailed design trade-off study along with the test results will be available in the form of a report for the evaluation of SECA Industrial partners. This project proposes to develop a new and innovative power converter technology suitable for Solid Oxide Fuel Cell (SOFC) power systems in accordance with SECA objectives. The proposed fuel cell inverter (FCI) employs state of the art power electronic devices configured in two unique topologies to achieve direct conversion of DC power (24-48V) available from a SOFC to AC power (120/240V, 60Hz) suitable for utility interface and powering stand alone loads. The primary objective is to realize cost effective fuel cell converter, which operates under a wide input voltage range, and output load swings with high efficiency and improved reliability.

  15. Optimization of spin-torque switching using AC and DC pulses

    SciTech Connect (OSTI)

    Dunn, Tom; Kamenev, Alex

    2014-06-21

    We explore spin-torque induced magnetic reversal in magnetic tunnel junctions using combined AC and DC spin-current pulses. We calculate the optimal pulse times and current strengths for both AC and DC pulses as well as the optimal AC signal frequency, needed to minimize the Joule heat lost during the switching process. The results of this optimization are compared against numeric simulations. Finally, we show how this optimization leads to different dynamic regimes, where switching is optimized by either a purely AC or DC spin-current, or a combination AC/DC spin-current, depending on the anisotropy energies and the spin-current polarization.

  16. Test Results of the AC Field Measurements of Fermilab Booster Corrector Magnets

    SciTech Connect (OSTI)

    DiMarco, E.Joseph; Harding, D.J.; Kashikhin, V.S.; Kotelnikov, S.K.; Lamm, M.J.; Makulski, A.; Nehring, R.; Orris, D.F.; Schlabach, P.; Sylvester, C.; Tartaglia, Michael Albert; /Fermilab

    2008-06-25

    Multi-element corrector magnets are being produced at Fermilab that enable correction of orbits and tunes through the entire cycle of the Booster, not just at injection. The corrector package includes six different corrector elements--normal and skew orientations of dipole, quadrupole, and sextupole--each independently powered. The magnets have been tested during typical AC ramping cycles at 15Hz using a fixed coil system to measure the dynamic field strength and field quality. The fixed coil is comprised of an array of inductive pick-up coils around the perimeter of a cylinder which are sampled simultaneously at 100 kHz with 24-bit ADC's. The performance of the measurement system and a summary of the field results are presented and discussed.

  17. AC electrokinetic manipulation of selenium nanoparticles for potential nanosensor applications

    SciTech Connect (OSTI)

    Mahmoodi, Seyed Reza; Bayati, Marzieh; Hosseinirad, Somayeh; Foroumadi, Alireza; Gilani, Kambiz; Rezayat, Seyed Mahdi

    2013-03-15

    Highlights: ? Se nanoparticles were synthesized using a reverse-microemulsion process. ? AC osmotic fluid flow repulses the particles from electrode edges. ? Dielectrophoretic force attracts the particles to electrode edges. ? Dielectrophoresis electrode showed non-ohmic behavior. ? The device can potentially be used as a nanosensor. - Abstract: We report the AC electrokinetic behavior of selenium (Se) nanoparticles for electrical characterization and possible application as micro/nano devices. selenium Se nanoparticles were successfully synthesized using a reverse-microemulsion process and investigated structurally using X-ray diffraction and transmission electron microscope. Interdigitated castellated ITO and non-castellated platinum electrodes were employed for manipulation of suspended materials in the fluid. Using ITO electrodes at low frequency limits resulted in deposition of Se particles on electrode surface. When Se particles exposed to platinum electrodes in the 10 Hz1 kHz range and V {sub p?p}> 8, AC osmotic fluid flow repulses the particles from electrode edges. However, in 10 kHz10 MHz range and V {sub p?p}> 5, dielectrophoretic force attracts the particles to electrode edges. As the Se particle concentration increased, the trapped Se particles were aligned along the electric field line and bridged the electrode gap. The device was characterized and can potentially be useful in making micro/nano electronic devices.

  18. Performance testing of the AC propulsion ELX electric vehicle

    SciTech Connect (OSTI)

    Kramer, W.E.; MacDowall, R.D.; Burke, A.F.

    1994-06-01

    Performance testing of the AC Propulsion ELX electric vehicle is described. Test data are presented and analyzed. The ELX vehicle is the first of a series of electric vehicles of interest to the California Air Resources Board. The test series is being conducted under a Cooperative Research and Development Agreement (CRADA) between the US Department of energy and the California Air Resources Board. The tests which were conducted showed that the AC Propulsion ELX electric vehicle has exceptional acceleration and range performance. when the vehicle`s battery was fully charged, the vehicle can accelerate from 0 to 96 km/h in about 10 seconds. Energy consumption and range tests using consecutive FUDS and HWFET Driving cycles (the all-electric cycle) indicate that the energy economy of the AC Propulsion ELX electric vehicle with regenerative braking is 97 W{center_dot}h/km, with a range of 153 km (95 miles). Computer simulations performed using the SIMPLEV Program indicate that the vehicle would have a range of 327 km (203 miles) on the all-electric cycle if the lead acid batteries were replaced with NiMH batteries having an energy density of 67 W{center_dot}h/kg. Comparisons of FUDS test data with and without regenerative braking indicated that regenerative braking reduced the energy consumption of the ELX vehicle by approximately 25%.

  19. Utility-Scale Power Tower Solar Systems: Performance Acceptance...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Utility-Scale Power Tower Solar Systems: Performance Acceptance Test Guidelines David ... DE-AC36-08GO28308 Utility-Scale Power Tower Solar Systems: Performance Acceptance Test ...

  20. Direct-current-like Phase Space Manipulation Using Chirped Alternating Current Fields

    SciTech Connect (OSTI)

    P.F. Schmit and N.J. Fisch

    2010-02-01

    Waves in plasmas can accelerate particles that are resonant with the wave. A dc electric field also accelerates particles, but without a resonance discrimination, which makes the acceleration mechanism profoundly different. Whereas wave-particle acceleration mechanisms have been widely discussed in the literature, this work discusses the direct analogy between wave acceleration and dc field acceleration in a particular parameter regime explored in previous works. Apart from the academic interest of this correspondence, there may be practical advantages in using waves to mimic dc electric fields, for example, in driving plasma current with high efficiency.

  1. Mission Support Contract Section J Contract No. DE-AC06-09RL14728

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Section J Contract No. DE-AC06-09RL14728 J-5-1 ATTACHMENT J-5 PERFORMANCE GUARANTEE AGREEMENT Modification 479 Mission Support Contract Section J Contract No. DE-AC06-09RL14728 J-5-2 Mission Support Contract Section J Contract No. DE-AC06-09RL14728 J-5-3 Mission Support Contract Section J Contract No. DE-AC06-09RL14728 J-5-4 Mission Support Contract Section J Contract No. DE-AC06-09RL14728 J-5-5 Section J Modification 479 Mission Support Contract Contract No. DE-AC06-09RL14728 Section J

  2. Low-temperature transport in ac-driven quantum dots in the Kondo regime

    SciTech Connect (OSTI)

    Lopez, Rosa; Aguado, Ramon; Platero, Gloria; Tejedor, Carlos

    2001-08-15

    We present a fully nonequilibrium calculation of the low-temperature transport properties of a quantum dot in the Kondo regime when an ac potential is applied to the gate. We solve a time-dependent Anderson model with finite on-site Coulomb interaction. The interaction self-energy is calculated up to second order in perturbation theory in the on-site interaction, in the context of the Keldysh nonequilibrium technique, and the effect of the ac voltage is taken into account exactly for all ranges of ac frequencies and ac intensities. The obtained linear conductance and time-averaged density of states of the quantum dot evolve in a nontrivial way as a function of the ac frequency and ac intensity of the harmonic modulation.

  3. Dielectric response of multiwalled carbon nanotubes as a function of applied ac-electric fields

    SciTech Connect (OSTI)

    Basu, Rajratan; Iannacchione, Germano S.

    2008-12-01

    The complex dielectric constant ({epsilon}{sup *}) is reported for multiwalled carbon nanotubes (MWCNTs) up to 10{sup 5} Hz as a function of ac-electric field amplitudes E{sub rot} (in phase and same frequency as the measurement) and E{sub ac} (different phase and fixed frequency with respect to the measurement). A slow relaxation process (mode 1) is observed, which shifts to higher frequency with increasing E{sub rot} but is independent of E{sub ac}. A fast relaxation process (mode 2) is also observed, which is independent of E{sub rot} but shifts to higher frequency with increasing E{sub ac} (opposite to that of mode 1). An ac-conductivity analysis of MWCNT reveals insights on how E{sub rot} and E{sub ac} influence the dissipation.

  4. Programmable AC power supply for simulating power transient expected in fusion reactor

    SciTech Connect (OSTI)

    Halimi, B.; Suh, K. Y.

    2012-07-01

    This paper focus on control engineering of the programmable AC power source which has capability to simulate power transient expected in fusion reactor. To generate the programmable power source, AC-AC power electronics converter is adopted to control the power of a set of heaters to represent the transient phenomena of heat exchangers or heat sources of a fusion reactor. The International Thermonuclear Experimental Reactor (ITER) plasma operation scenario is used as the basic reference for producing this transient power source. (authors)

  5. The War of the Currents: AC vs. DC Power | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Power Company decided to award Westinghouse -- who had licensed Tesla's polyphase AC induction motor patent -- the contract to generate power from Niagara Falls. Although some...

  6. Optimal management of batteries in electric systems

    DOE Patents [OSTI]

    Atcitty, Stanley; Butler, Paul C.; Corey, Garth P.; Symons, Philip C.

    2002-01-01

    An electric system including at least a pair of battery strings and an AC source minimizes the use and maximizes the efficiency of the AC source by using the AC source only to charge all battery strings at the same time. Then one or more battery strings is used to power the load while management, such as application of a finish charge, is provided to one battery string. After another charge cycle, the roles of the battery strings are reversed so that each battery string receives regular management.

  7. Contract No. DE-AC04-94AL85000

    National Nuclear Security Administration (NNSA)

    Contract No. DE-AC04-94AL85000 Modification No. 473 Page 2 of 36 1. Section B, Clause B-2, Contract Type and Value is amended as follows: (i) Paragraph (b) is revised to add the total estimated cost entry under "Contract Periods" and "Estimated Cost" for FY 2013, changing the "TOTAL through" entry, and adding a place holder for the two option periods as follows: Add: October 1, 2012 through September 30, 2013 $ 2,462,698,305 Option 1: October 1, 2013 through $ TBD*

  8. Note: A sample holder design for sensitive magnetic measurements at high temperatures in a magnetic properties measurement system

    SciTech Connect (OSTI)

    Arauzo, A.; Guerrero, E.; Urtizberea, A.; Stankiewicz, J.; Rillo, C.

    2012-06-15

    A sample holder design for high temperature measurements in a commercial MPMS SQUID magnetometer from Quantum Design is presented. It fulfills the requirements for the simultaneous use of the oven and reciprocating sample option (RSO) options, thus allowing sensitive magnetic measurements up to 800 K. Alternating current susceptibility can also be measured, since the holder does not induce any phase shift relative to the ac driven field. It is easily fabricated by twisting Constantan Copyright-Sign wires into a braid nesting the sample inside. This design ensures that the sample be placed tightly into a tough holder with its orientation fixed, and prevents any sample displacement during the fast movements of the RSO transport, up to high temperatures.

  9. ETX-I: First generation single-shaft electric propulsion system program: Volume 1, Powertrain: Final report

    SciTech Connect (OSTI)

    Not Available

    1987-02-01

    In 1981, discussions between Ford and General Electric (GE) evolved a concept for an advanced electric vehicle powertrain. The concept involved a combination of technology from Ford and GE that would result in a unique powertrain based on a motor and transmission concentric with the drive wheel axis, a concept originally proposed for use with Wankel engines, and based on the use of a ''hermetic,'' three-phase, alternating current (ac) motor, which is currently in high volume production in the necessary horsepower range. An additional benefit of this configuration is the ability to use a single fluid for cooling of the motor and lubrication of the transaxle. This volume describes the powertrain portion of the ETX-I program.

  10. Cooling systems and hybrid A/C systems using an electromagnetic radiation-absorbing complex

    DOE Patents [OSTI]

    Halas, Nancy J.; Nordlander, Peter; Neumann, Oara

    2015-05-19

    A method for powering a cooling unit. The method including applying electromagnetic (EM) radiation to a complex, where the complex absorbs the EM radiation to generate heat, transforming, using the heat generated by the complex, a fluid to vapor, and sending the vapor from the vessel to a turbine coupled to a generator by a shaft, where the vapor causes the turbine to rotate, which turns the shaft and causes the generator to generate the electric power, wherein the electric powers supplements the power needed to power the cooling unit

  11. Global DC Power System Market Analysis | OpenEI Community

    Open Energy Info (EERE)

    either positive or negative. It can be powered from an AC or DC source. A basic DC power system consists of a transformer, a rectifier, a filter, and a regulator. All these...

  12. Global DC Power System Market Growth | OpenEI Community

    Open Energy Info (EERE)

    either positive or negative. It can be powered from an AC or DC source. A basic DC power system consists of a transformer, a rectifier, a filter, and a regulator. All these...

  13. Global DC Power System Market Space | OpenEI Community

    Open Energy Info (EERE)

    either positive or negative. It can be powered from an AC or DC source. A basic DC power system consists of a transformer, a rectifier, a filter, and a regulator. All these...

  14. Renewable Systems Interconnection

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Juan J. Torres Manager, Energy Systems Analysis Sandia National Laboratories jjtorre@sandia.gov Renewable Systems Interconnection Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under contract DE-AC04-94AL85000. 2 Driving the market: Climate change Cost reductions Market Risk: As PV production approaches ~5% of installed generating capacity, grid impacts could create barriers to future growth. Significant

  15. Segmented superconducting tape having reduced AC losses and method of making

    DOE Patents [OSTI]

    Foltyn, Stephen R.; Jia, Quanxi; Arendt, Paul N.; Holesinger, Terry G.; Wang, Haiyan

    2009-09-22

    A superconducting tape having reduced AC losses. The tape has a high temperature superconductor layer that is segmented. Disruptive strips, formed in one of the tape substrate, a buffer layer, and the superconducting layer create parallel discontinuities in the superconducting layer that separate the current-carrying elements of the superconducting layer into strips or filament-like structures. Segmentation of the current-carrying elements has the effect of reducing AC current losses. Methods of making such a superconducting tape and reducing AC losses in such tapes are also disclosed.

  16. Greener Commercial A/C Units Becoming a Cool Item | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Greener Commercial A/C Units Becoming a Cool Item Greener Commercial A/C Units Becoming a Cool Item July 1, 2010 - 5:11pm Addthis Greener Commercial A/C Units Becoming a Cool Item Stephen Graff Former Writer & editor for Energy Empowers, EERE A new federal tax credit is helping McQuay International expand its line of energy-efficient HVAC products at two of its plants and bring back furloughed workers. With the help of a 48C manufacturing tax credit worth $2 million under the American

  17. Fluctuation of an ion beam extracted from an AC filament driven Bernas-type ion source

    SciTech Connect (OSTI)

    Miyamoto, N. Okajima, Y.; Wada, M.

    2014-02-15

    Argon ion beam fluctuation from an AC filament driven Bernas-type ion source is observed. The ion beam was measured by an 8 measurement elements beam profile monitor. The amplitude of the beam current fluctuation stayed in the same level from 100 Hz to 1 kHz of the filament heating frequency. The beam current fluctuation frequency measured by the beam profile monitor was equal to the frequency of the AC filament operation. The fluctuation amplitudes of the beam current by AC operation were less than 7% and were in the same level of the DC operation.

  18. SERVOMOTOR CONTROL SYSTEM

    DOE Patents [OSTI]

    MacNeille, S.M.

    1958-12-01

    Control systems for automatic positioning of an electric motor operated vapor valve are described which is operable under the severe conditions existing in apparatus for electro-magnetlcally separating isotopes. In general, the system includes a rotor for turning the valve comprising two colls mounted mutually perpendicular to each other and also perpendicular to the magnetic field of the isotope separating apparatus. The coils are furnished with both a-c and d- c current by assoclate control circuitry and a position control is provided for varying the ratlo of the a-c currents in the coils and at the same time, but in an inverse manner, the ratio between the d-c currents in the coils is varied. With the present system the magnitude of the motor torque is constant for all valves of the rotor orientatlon angle.

  19. Docket No. EERE-2012-BT-TP-0046; RIN 1904-AC52 Ex partecommunication...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Ex parte communication Meeting of May 16, 2013 Docket No. EERE-2012-BT-TP-0046; RIN 1904-AC52 Ex parte communication Meeting of May 16, 2013 This memorandum for the record ...

  20. Sandia Corporation Contract No. DE-AC04-94AL85000

    National Nuclear Security Administration (NNSA)

    DE-AC04-94AL85000 Modification No. 585 Attachment 1 Part III - Section J Appendix D Key Personnel September 11, 2015 (Modification No. 585) The Contractor's employees identified ...

  1. DOE 10 CFR Part 431 EERE-2010-BT-TP-0036 RIN 1904-AC-38 Submission...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Submission of Comments by Howe Corporation DOE 10 CFR Part 431 EERE-2010-BT-TP-0036 RIN 1904-AC-38 Submission of Comments by Howe Corporation Comments to the following DOE ...

  2. AEP (Central and SWEPCO)- Coolsaver A/C Tune Up or Replacement

    Broader source: Energy.gov [DOE]

    Participating customers are eligible to receive a $75 coupon for use toward A/C and heat pump efficiency services performed as a result of the program’s tune-up analysis, contractors are eligible...

  3. Contract DE-AC04-94AL85000 Modification M508

    National Nuclear Security Administration (NNSA)

    Contract DE-AC04-94AL85000 Modification M508 Attachment 1 SECTION J APPENDIX C Special Bank Account Agreement (Updated Mod M271, M461, M497, M508) Intentionally left blank for...

  4. Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Preliminary Evaluation Results

    SciTech Connect (OSTI)

    Chandler, K.; Eudy, L.

    2007-03-01

    This report provides an evaluation of three prototype fuel cell-powered transit buses operating at AC Transit in Oakland, California, and six baseline diesel buses similar in design to the fuel cell buses.

  5. Contract DE-AC02-07CH11358 Modifications Language Changes

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AC02-07CH11358 Modifications Language Changes Modification 183 October 23, 2015 Part I, Section H - Special Contract Requirements (replace Mod 171) Part II, Section I - Contract...

  6. Workplace Charging: Safety and Management Policy For AC Level 1 Charging Receptacles

    Broader source: Energy.gov [DOE]

    Organizations offering plug-in electric vehicle (PEV) charging at AC Level 1 charging receptacles, or wall outlets, can ensure a safe and successful workplace charging experience by considering the...

  7. Contract DE-AC04-94AL85000 Modification M508

    National Nuclear Security Administration (NNSA)

    Contract DE-AC04-94AL85000 Modification M508 Attachment 1 SECTION J APPENDIX C Special Bank Account Agreement (Updated Mod M271, M461, M497, M508) Intentionally left blank for Internet posting purposes.

  8. Solar Electric Grid Integration- Advanced Concepts (SEGIS-AC) Funding Opportunity

    Broader source: Energy.gov [DOE]

    Through the Solar Electric Grid Integration – Advanced Concepts (SEGIS-AC) program, DOE is funding solar projects that are targeting ways to develop power electronics and build smarter, more...

  9. FY 2013 Performance Evaluation Report Sandia Corporation, Contract DE-AC04-94AL85000

    National Nuclear Security Administration (NNSA)

    3 Performance Evaluation Report Sandia Corporation, Contract DE-AC04-94AL85000 National Nuclear Security Administration FY 2013 Performance Evaluation Report FOR Sandia Corporation Sandia Field Office Sandia National Laboratories Performance Period: October 2012 - September 2013 DATE: December 23, 2013 Sandia Field Office December 23, 2013 FY 2013 Performance Evaluation Report Page 1 of 23 Sandia Corporation, Contract DE-AC04-94AL85000 Executive Summary This Performance Evaluation Report (PER)

  10. Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses:

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Preliminary Evaluation Results | Department of Energy Preliminary Evaluation Results Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Preliminary Evaluation Results This report provides an evaluation of three prototype fuel cell-powered transit buses operating at AC Transit in Oakland, California, and six baseline diesel buses similar in design to the fuel cell buses. PDF icon 41041.pdf More Documents & Publications Connecticut Transit (CTTRANSIT) Fuel Cell

  11. Bimode uninterruptible power supply compatibility in renewable hybrid energy systems

    SciTech Connect (OSTI)

    Bower, W. ); O'Sullivan, G. )

    1990-08-01

    Inverters installed in renewable hybrid energy systems are typically used in a stand-alone mode to supply ac power to loads from battery storage when the engine-generator is not being used. Similarities in topology and in the performance requirements of the standby uninterruptible power supply (UPS) system and the hybrid system suggest the UPS could be used in hybrid energy systems. Another alternative to inverters with add-on charging circuits or standby UPS hardware is the Bimode UPS. The bimode UPS uses common circuitry and power components for dc to ac inversion and battery charging. It also provides an automatic and nearly instantaneous ac power transfer function when the engine-generator is started or stopped. The measured operating and transfer characteristics of a bimode UPS in a utility system and in a hybrid system are presented. The applicability of the bimode UPS to hybrid systems and its compatibility in a PV/engine-generator hybrid system are given.

  12. New Automotive Air Conditioning System Simulation Tool Developed in MATLAB/Simulink

    SciTech Connect (OSTI)

    Kiss, T.; Chaney, L.; Meyer, J.

    2013-07-01

    Further improvements in vehicle fuel efficiency require accurate evaluation of the vehicle's transient total power requirement. When operated, the air conditioning (A/C) system is the largest auxiliary load on a vehicle; therefore, accurate evaluation of the load it places on the vehicle's engine and/or energy storage system is especially important. Vehicle simulation software, such as 'Autonomie,' has been used by OEMs to evaluate vehicles' energy performance. A transient A/C simulation tool incorporated into vehicle simulation models would also provide a tool for developing more efficient A/C systems through a thorough consideration of the transient A/C system performance. The dynamic system simulation software Matlab/Simulink was used to develop new and more efficient vehicle energy system controls. The various modeling methods used for the new simulation tool are described in detail. Comparison with measured data is provided to demonstrate the validity of the model.

  13. Magnetostrictive materials and method for improving AC characteristics in same

    DOE Patents [OSTI]

    Pulvirenti, Patricia P.; Jiles, David C.

    2001-08-14

    The present invention provides Terfenol-D alloys ("doped" Terfenol) having optimized performances under the condition of time-dependent magnetic fields. In one embodiment, performance is optimized by lowering the conductivity of Terfenol, thereby improving the frequency response. This can be achieved through addition of Group III or IV elements, such as Si and Al. Addition of these types of elements provides scattering sites for conduction electrons, thereby increasing resistivity by 125% which leads to an average increase in penetration depth of 80% at 1 kHz and an increase in energy conversion efficiency of 55%. The permeability of doped Terfenol remains constant over a wider frequency range as compared with undoped Terfenol. These results demonstrate that adding impurities, such as Si and Al, are effective in improving the ac characteristics of Terfenol. A magnetoelastic Gruneisen parameter, .gamma..sub.me, has also been derived from the thermodynamic equations of state, and provides another means by which to characterize the coupling efficiency in magnetostrictive materials on a more fundamental basis.

  14. Module Embedded Microinverter Smart Grid Ready Residential Solar Electric

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    System | Department of Energy Module Embedded Microinverter Smart Grid Ready Residential Solar Electric System Module Embedded Microinverter Smart Grid Ready Residential Solar Electric System GE logo.png -- This project is inactive -- This project is developing and demonstrating a cost-reduction approach for an alternating-current (AC) photovoltaic (PV) module that is driven by innovations in microinverter design, module integration and packaging, and integration with a new intelligent

  15. Evaluation of station blackout accidents at nuclear power plants: Technical findings related to unresolved safety issue A-44: Final report

    SciTech Connect (OSTI)

    Not Available

    1988-06-01

    ''Station Blackout,'' which is the complete loss of alternating current (AC) electrical power in a nuclear power plant, has been designated as Unresolved Safety Issue A-44. Because many safety systems required for reactor core decay heat removal and containment heat removal depend on AC power, the consequences of a station blackout could be severe. This report documents the findings of technical studies performed as part of the program to resolve this issue. The important factors analyzed include: the fequency of loss of offsite power; the probability that emergency or onsite AC power supplies would be unavailable; the capability and reliability of decay heat removal systems independent of AC power; and the likelihood that offsite power would be restored before systems that cannot operate for extended periods without AC power fail, thus resulting in core damage. This report also addresses effects of different designs, locations, and operational features on the estimated frequency of core damage resulting from station blackout events.

  16. Contract No. DE-AC02-09CH11466 Section J - Appendix F J-F-1

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    52 Contract No. DE-AC02-09CH11466 Section J - Appendix F J-F-1 Attachment J.6 APPENDIX F Contractor Resources, Commitments, and Agreements Contract No. DE-AC02-09CH11466 Modification No. 0152 Contract No. DE-AC02-09CH11466 Section J - Appendix F J-F-2 This page intentionally blank Modification No. 0152 Contract No. DE-AC02-09CH11466 Section J - Appendix F J-F-3 RESOURCES, SERVICES, AND SUPPORT PROVIDED TO PPPL Princeton University has committed substantial resources and services over the first

  17. Subunit compositions of Arabidopsis RNA polymerases I and III reveal Pol I- and Pol III-specific forms of the AC40 subunit and alternative forms of the C53 subunit

    SciTech Connect (OSTI)

    Ream, Thomas S.; Haag, Jeremy R.; Pontvianne, Frederic; Nicora, Carrie D.; Norbeck, Angela D.; Pasa-Tolic, Ljiljana; Pikaard, Craig S.

    2015-05-02

    Using affinity purification and mass spectrometry, we identified the subunits of Arabidopsis thaliana multisubunit RNA Polymerases I and III (abbreviated as Pol I and Pol III), providing the first description of their physical compositions in plants. AC40 and AC19 subunits are typically common to Pol I (a.k.a. Pol A) and Pol III (a.k.a. Pol C) and are encoded by single genes whose mutation, in humans, is a cause of the craniofacial disorder, Treacher-Collins Syndrome. Surprisingly, A. thaliana, and related species, express two distinct AC40 paralogs, one of which assembles into Pol I and the other of which assembles into Pol III. Changes at eight amino acid positions correlate with this functional divergence of Pol I and Pol III-specific AC40 paralogs. Two genes encode homologs of the yeast C53 subunit, and either variant can assemble into Pol III. By contrast, only one of two potential C17 variants, and one of two potential C31 variants were detected in Pol III. We introduce a new nomenclature system for plant Pol I and Pol III subunits in which the twelve subunits that are structurally and functionally homologous among Pols I through V are assigned equivalent numbers.

  18. Subunit compositions of Arabidopsis RNA polymerases I and III reveal Pol I- and Pol III-specific forms of the AC40 subunit and alternative forms of the C53 subunit

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ream, Thomas S.; Haag, Jeremy R.; Pontvianne, Frederic; Nicora, Carrie D.; Norbeck, Angela D.; Pasa-Tolic, Ljiljana; Pikaard, Craig S.

    2015-05-02

    Using affinity purification and mass spectrometry, we identified the subunits of Arabidopsis thaliana multisubunit RNA Polymerases I and III (abbreviated as Pol I and Pol III), providing the first description of their physical compositions in plants. AC40 and AC19 subunits are typically common to Pol I (a.k.a. Pol A) and Pol III (a.k.a. Pol C) and are encoded by single genes whose mutation, in humans, is a cause of the craniofacial disorder, Treacher-Collins Syndrome. Surprisingly, A. thaliana, and related species, express two distinct AC40 paralogs, one of which assembles into Pol I and the other of which assembles into Polmore » III. Changes at eight amino acid positions correlate with this functional divergence of Pol I and Pol III-specific AC40 paralogs. Two genes encode homologs of the yeast C53 subunit, and either variant can assemble into Pol III. By contrast, only one of two potential C17 variants, and one of two potential C31 variants were detected in Pol III. We introduce a new nomenclature system for plant Pol I and Pol III subunits in which the twelve subunits that are structurally and functionally homologous among Pols I through V are assigned equivalent numbers.« less

  19. Systems and methods for commutating inductor current using a matrix converter

    DOE Patents [OSTI]

    Ransom, Ray M; Kajouke, Lateef A; Perisic, Milun

    2012-10-16

    Systems and methods are provided for delivering current using a matrix converter in a vehicle. An electrical system comprises an AC interface, a first conversion module coupled to the AC interface, an inductive element coupled between the AC interface and the first conversion module, and a control module coupled to the first conversion module. The control module is configured to operate the first conversion module in a bidirectional operating mode to commutate current bidirectionally. When a magnitude of the current through the inductive element is greater than a first threshold value, the control module operates the conversion module in a unidirectional operating mode, wherein current is commutated unidirectionally.

  20. Global DC Power System Market Trends, Analysis 2015-2019 | OpenEI...

    Open Energy Info (EERE)

    either positive or negative. It can be powered from an AC or DC source. A basic DC power system consists of a transformer, a rectifier, a filter, and a regulator. All these...

  1. Global DC Power System Market Key Vendors | OpenEI Community

    Open Energy Info (EERE)

    either positive or negative. It can be powered from an AC or DC source. A basic DC power system consists of a transformer, a rectifier, a filter, and a regulator. All these...

  2. Efficacy of low level electric current (A-C) for controlling quagga mussles in the Welland Canal

    SciTech Connect (OSTI)

    Fears, C.; Mackie, G.L.

    1995-06-01

    The efficacy of systems (for which patents are pending) which use low-voltage A-C currents for preventing settlement and attachment by zebra mussels were tested with steel rods and plates placed near the intake of a pulp and paper plant in the Welland Canal at Thorold, Ontario. Six racks made of 16 ft. (4.9 m), 2x4s (5.1 x 10.2 cm) were placed into the Welland Canal on August 5, 1994. One rack had 1/8th in (3.2 mm) diam x 12 in (30.5 cm) long steel rods, each separated by 2 in (5.1 cm) attached to pressure treated wood and concrete blocks and an A-C current of 16 v (or 8 v/in); rack 2 had steel rods of the same configuration but 12 v (or 6 v/in) was applied; rack 3 was identical to these but no current was applied and was used as a rod control. The remaining three racks had steel plates, each plate being 3 in (7.6 cm) wide X 24 in (61 cm) long X 1/4 in (6.4 mm) thick and separated by 2 in (5.1 cm); one had 12 v applied (or 6 v/in), another had 16 v applied (or 8 v/in), and the third had no current and was used as a plate control. The racks were placed on the upstream and downstream side of the intake at a depth of about 7 ft (2.1 m) where the mussels populations were heaviest (as determined by SCUBA diving). All mussels were quagga mussels (Dreissena bugensis). The racks were pulled in mid November after settlement was complete and the results showed: (1) complete prevention of settlement of both new recruits and translocators at 8 volts/in with steel rods on both wood and concrete surfaces and with steel plate trash bars; (2) partial prevention of settlement at 6 volts/in with steel rods on both wood and concrete surfaces and steel plates; and (3) that, at current kilowatt hr rates, total efficacy at 8 volts/in would cost approximately $10.80/day/1000 sq ft using rods to protect concrete walls and about $16.32/day/1000 sq ft to protect 3 in wide x 1/4 in thick trash bars. These costs can be reduced even further with pulse dosed AC currents.

  3. Forward and reverse control system for induction motors

    DOE Patents [OSTI]

    Wright, J.T.

    1987-09-15

    A control system for controlling the direction of rotation of a rotor of an induction motor includes an array of five triacs with one of the triacs applying a current of fixed phase to the windings of the rotor and four of the triacs being switchable to apply either hot ac current or return ac current to the stator windings so as to reverse the phase of current in the stator relative to that of the rotor and thereby reverse the direction of rotation of the rotor. Switching current phase in the stator is accomplished by operating the gates of pairs of the triacs so as to connect either hot ac current or return ac current to the input winding of the stator. 1 fig.

  4. Method And Apparatus For Production Of Bi-213 From The Activity Ac-225 Source

    DOE Patents [OSTI]

    Egorov, Oleg B.; O'Hara, Matthew J.

    2005-12-06

    A method and apparatus for isolating and purifying a .sup.213 Bi radioactive isotope from an .sup.225 Ac source using a primary column and a primary sorbent which preferentially retains .sup.225 Ac over .sup.213 Bi when exposed to a compatible solvent in combination with a secondary column having a secondary sorbent which retains .sup.213 Bi when exposed to a mixture of the compatible solvent and .sup.213 Bi. A "compatible solvent" is a solvent which will preferentially remove .sup.213 Bi radioactive isotopes from a primary sorbent without removing .sup.225 Ac radioactive isotopes, and then allow .sup.213 Bi radioactive isotopes removed from the primary sorbent to be retained on a secondary sorbent, without having to dilute or otherwise chemically or physically modify the compatible solvent in between exposure to the primary and secondary sorbents.

  5. Methods, systems and apparatus for synchronous current regulation of a five-phase machine

    DOE Patents [OSTI]

    Gallegos-Lopez, Gabriel; Perisic, Milun

    2012-10-09

    Methods, systems and apparatus are provided for controlling operation of and regulating current provided to a five-phase machine when one or more phases has experienced a fault or has failed. In one implementation, the disclosed embodiments can be used to synchronously regulate current in a vector controlled motor drive system that includes a five-phase AC machine, a five-phase inverter module coupled to the five-phase AC machine, and a synchronous current regulator.

  6. ATTACHMENT FLOODPLAIN STATEMENT OF FINDINGS FOR DEPARTMENT OF...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Inverters convert the DC power to alternating current (AC) power, and the AC power then flows to transformers located in the solar field and at the project substation where it is ...

  7. Microsoft Word - DE-AC06-09RL15009 Section C.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Part I Contract No. DE-AC06-09RL15009 Section C Page C-1 Section C Statement of Work Table of Contents Section Page C.1 Introduction C-2 C.2 Performance Requirements, CLIN0001-CLIN0007 C-3 C.3 Additional Performance Requirements for Claims Management C-3 C.4 Management and Oversight of Insurance Claim Number 8600434 C-7 C.5 Energy Employees Occupational Illness Compensation Program Act (EEOICPA) CLIN0008 C-7 Workers' Compensation Claims Services Part I Contract No. DE-AC06-09RL15009 Section C

  8. Linear optics measurements and corrections using an AC dipole in RHIC

    SciTech Connect (OSTI)

    Wang, G.; Bai, M.; Yang, L.

    2010-05-23

    We report recent experimental results on linear optics measurements and corrections using ac dipole. In RHIC 2009 run, the concept of the SVD correction algorithm is tested at injection energy for both identifying the artificial gradient errors and correcting it using the trim quadrupoles. The measured phase beatings were reduced by 30% and 40% respectively for two dedicated experiments. In RHIC 2010 run, ac dipole is used to measure {beta}* and chromatic {beta} function. For the 0.65m {beta}* lattice, we observed a factor of 3 discrepancy between model and measured chromatic {beta} function in the yellow ring.

  9. Docket No. EERE-2012-BT-TP-0046; RIN 1904-AC52 | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Docket No. EERE-2012-BT-TP-0046; RIN 1904-AC52 This memorandum for the record provides a summary of a visit by Mr. Roland Risser, Program Manager, Building Technologies Program, U.S. Department of Energy, to the February 22, 2013, meeting of the Steering Committee for the Set-Top Box Voluntary Agreement in Washington, D.C. PDF icon CEA memo to DOE re ex parte communication_2-28-13.pdf More Documents & Publications Docket No. EERE-2012-BT-TP-0046; RIN 1904-AC52 Ex parte

  10. Surplus Facilities Management Program (SFMP) Contract No. DE-AC05-810R20722

    Office of Legacy Management (LM)

    '^ l '"17 ^' ~/t~ >7~ 6~'1 ~DOE/OR/20722-18 Surplus Facilities Management Program (SFMP) Contract No. DE-AC05-810R20722 NIAGARA FALLS STORAGE SITE ENVIRONMENTAL MONITORING REPORT Calendar Year 1983 July 1984 Bechtel National, Inc. Advanced Technology Division DOE/OR/20722-18 NIAGARA FALLS STORAGE SITE ENVIRONMENTAL MONITORING REPORT CALENDAR YEAR 1983 July 1984 Prepared for U.S. DEPARTMENT OF ENERGY OAK RIDGE OPERATIONS OFFICE Under Contract No. DE-AC05-810R20722 By Bechtel National,

  11. WTP Contract Section D Contract No. DE-AC27-01RV14136 Conformed Thru Modification No. A143

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    D Contract No. DE-AC27-01RV14136 Conformed Thru Modification No. A143 D - i SECTION D PACKAGING AND MARKING WTP Contract Section D Contract No. DE-AC27-01RV14136 Conformed Thru Modification No. A143 D - ii SECTION D PACKAGING AND MARKING TABLE OF CONTENTS Section Clauses Page D.1 PACKAGING .................................................................................................................................... 1 D.2 MARKING

  12. Tank Operations Contract Section J Contract No. DE-AC27-08RV14800 Modification No. 280

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    J Contract No. DE-AC27-08RV14800 Modification No. 280 J.4-1 SECTION J, ATTACHMENT J.4 PERFORMANCE EVALUATION AND MEASUREMENT PLAN (PEMP) Tank Operations Contract Section J Contract No. DE-AC27-08RV14800 Modification No. 280 J.4-3 TABLE OF CONTENTS Page A. INTRODUCTION ............................................................................................................... 4 B. REFERENCES

  13. Retrofitting Air Conditioning and Duct Systems in Hot, Dry Climates

    SciTech Connect (OSTI)

    Shapiro, C.; Aldrich, R.; Arena, L.

    2012-07-01

    This technical report describes CARB's work with Clark County Community Resources Division in Las Vegas, Nevada, to optimize procedures for upgrading cooling systems on existing homes in the area to implement health, safety, and energy improvements. Detailed monitoring of five AC systems showed that three of the five systems met or exceeded air flow rate goals.

  14. DE-AC05-06OR23100

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... Repairer 14.94 23311 - Fuel Distribution System Mechanic ... 11.63 28690 - Swimming Pool Operator 16.20 29000 - ... such as dry cleaning, daily washing, or commercial ...

  15. DE-AC05-06OR23100

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... Repairer 19.08 23311 - Fuel Distribution System Mechanic ... 12.43 28690 - Swimming Pool Operator 16.90 29000 - ... such as dry cleaning, daily washing, or commercial ...

  16. Contract No. DE-AC02-07CH11358

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... Maximum Performance- Fee Pool Available to be Earned 3.1 ... new financial system on a daily basis for budgeting, ... Fossil Energy DOENRCan Fuel Cells Implementing ...

  17. Contract DE-AC05-00OR22800

    National Nuclear Security Administration (NNSA)

    ... small business database search application Web page at http:dsbs.sba.govdsbssearch... wide, electronic, web-based system for small business subcontracting program reporting. ...

  18. Design, construction, and startup of a concentrating photovoltaic solar energy system in Hawaii: Phase II. Final report

    SciTech Connect (OSTI)

    Spencer, R.; Harper, R.; Maberry, G.; Bedard, R.; Rafinejad, D.

    1982-10-01

    Acurex Corporation has designed, constructed, and is now operating a 35-kWp concentrating photovoltaic solar system located at the G.N. Wilcox Memorial Hospital in Lihue, Kauai, Hawaii. The facility consists of 446 m/sup 2/ (4800 ft/sup 2/) of parabolic trough photovoltaic collectors, an electrical power generation system which converts the direct current field output into grid-compatible alternating current power, and a thermal power subsystem for heating the hospital potable water. This report summarizes the design, construction, startup, and performance of this solar facility.

  19. Demodulation circuit for AC motor current spectral analysis

    DOE Patents [OSTI]

    Hendrix, Donald E.; Smith, Stephen F.

    1990-12-18

    A motor current analysis method for the remote, noninvasive inspection of electric motor-operated systems. Synchronous amplitude demodulation and phase demodulation circuits are used singly and in combination along with a frequency analyzer to produce improved spectral analysis of load-induced frequencies present in the electric current flowing in a motor-driven system.

  20. 222-S LAS&T Contract No. DE-AC27-10RV15051

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract No. DE-AC27-10RV15051 Conformed thru Contract Modification No. 127 J-1 PART III - LIST OF DOCUMENTS, EXHIBITS, AND OTHER ATTACHMENTS SECTION J LIST OF ATTACHMENTS Table of Contents ATTACHMENT 1: DOE DIRECTIVES APPLICABLE TO THE 222-S LAB ............................................... 2 ATTACHMENT 2: 222-S LABORATORY DOCUMENTED SAFETY ANALYSIS ..................................... 5 DSA HNF-12125.pdf

  1. U.S. Department of Energy Contract, DE-AC06-08RL14788

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2015 CHPRC-2015-07, Revision 0 U.S. Department of Energy Contract, DE-AC06-08RL14788 Deliverable C.3.1.3.1 - 1 J. A. Ciucci President and Chief Executive Officer Monthly Performance Report 1 CHPRC-2015-07, Rev. 0 * Overview CHPRC Monthly Performance Report July 2015 CONTENTS EXECUTIVE SUMMARY ..............................................................................................................2 TARGET ZERO PERFORMANCE

  2. U.S. Department of Energy Contract, DE-AC06-08RL14788

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    015 CHPRC-2015-03, Revision 0 U.S. Department of Energy Contract, DE-AC06-08RL14788 Deliverable C.3.1.3.1 - 1 J. A. Ciucci President and Chief Executive Officer Monthly Performance Report 1 CHPRC-2015-03, Rev. 0 * Overview CHPRC Monthly Performance Report March 2015 CONTENTS EXECUTIVE SUMMARY ..............................................................................................................2 TARGET ZERO PERFORMANCE

  3. U.S. Department of Energy Contract, DE-AC06-08RL14788

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    May 2015 CHPRC-2015-05, Revision 0 U.S. Department of Energy Contract, DE-AC06-08RL14788 Deliverable C.3.1.3.1 - 1 J. A. Ciucci President and Chief Executive Officer Monthly Performance Report 1 CHPRC-2015-05, Rev. 0 * Overview CHPRC Monthly Performance Report May 2015 CONTENTS EXECUTIVE SUMMARY ..............................................................................................................2 TARGET ZERO PERFORMANCE

  4. Incorporating residential AC load control into ancillary service markets: Measurement and settlement

    SciTech Connect (OSTI)

    Bode, Josh L.; Sullivan, Michael J.; Berghman, Dries; Eto, Joseph H.

    2013-05-01

    Many pre-existing air conditioner load control programs can provide valuable operational flexibility but have not been incorporated into electricity ancillary service markets or grid operations. Multiple demonstrations have shown that residential air conditioner (AC) response can deliver resources quickly and can provide contingency reserves. A key policy hurdle to be overcome before AC load control can be fully incorporated into markets is how to balance the accuracy, cost, and complexity of methods available for the settlement of load curtailment. Overcoming this hurdle requires a means for assessing the accuracy of shorter-term AC load control demand reduction estimation approaches in an unbiased manner. This paper applies such a method to compare the accuracy of approaches varying in cost and complexity ? including regression analysis, load matching and control group approaches ? using feeder data, household data and AC end-use data. We recommend a practical approach for settlement, relying on an annually updated set of tables, with pre-calculated reduction estimates. These tables allow users to look up the demand reduction per device based on daily maximum temperature, geographic region and hour of day, simplifying settlement and providing a solution to the policy problem presented in this paper.

  5. Non-Federal Participation in AC Intertie : Final Environmental Impact Statement. Volume 1: Environmental Analysis.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    1994-01-01

    Bonneville Power Administration (BPA) is considering action in two areas: (1) non-Federal access to the AC Intertie, and, (2) BPA Intertie marketing. BPA`s preferred alternative for non-Federal access is the Capacity Ownership alternative combined with the Increased Assured Delivery -- Access for Non-Scheduling Utilities alternative; the preferred alternative for BPA Intertie marketing is the Federal Marketing and Joint Ventures alternative. BPA considered these two areas previously in its Intertie Development and Use EIS of April 1988. The EIS resulted in BPA decisions to participate in the construction of the Third AC Intertie, to allow non-Federal access to BPA`s share of the Pacific Northwest-Pacific Southwest (PNW-PSW) Intertie (AC and DC lines) pursuant to a Long-Term Intertie Access Policy (LTIAP), and to pursue BPA`s export marketing alternative. The decision on allowing direct financial non-Federal participation in the Third AC line was deferred to a later, separate process, examined here. Also, BPA`s export marketing objectives must now be examined in view of changed operations of Columbia River hydro facilities for improved fish survival.

  6. Type B Accident Investigation Report of the Arc Flash at Brookhaven National Laboratory, April 14, 2006

    Energy Savers [EERE]

    Type B Accident Investigation Board Report Arc Flash at Brookhaven National Laboratory April 14, 2006 August 2006 Brookhaven Site Office U.S. Department of Energy Upton, New York Type B Accident Investigation of the Arc Flash at Brookhaven National Laboratory, April 14, 2006 ii Acronyms and Abbreviations AC Alternating Current AGS Alternating Gradient Synchrotron AHJ Authority Having Jurisdiction ASE Accelerator Safety Envelope ASSRC Accelerator System Safety Review Committee ATS Action Tracking

  7. Observation of multi-scale oscillation of laminar lifted flames with low-frequency AC electric fields

    SciTech Connect (OSTI)

    Ryu, S.K.; Kim, Y.K.; Kim, M.K.; Won, S.H. [School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742 (Korea); Chung, S.H. [Clean Combustion Research Center, King Abdullah University of Science and Technology, Thuwal (Saudi Arabia)

    2010-01-15

    The oscillation behavior of laminar lifted flames under the influence of low-frequency AC has been investigated experimentally in coflow jets. Various oscillation modes were existed depending on jet velocity and the voltage and frequency of AC, especially when the AC frequency was typically smaller than 30 Hz. Three different oscillation modes were observed: (1) large-scale oscillation with the oscillation frequency of about 0.1 Hz, which was independent of the applied AC frequency, (2) small-scale oscillation synchronized to the applied AC frequency, and (3) doubly-periodic oscillation with small-scale oscillation embedded in large-scale oscillation. As the AC frequency decreased from 30 Hz, the oscillation modes were in the order of the large-scale oscillation, doubly-periodic oscillation, and small-scale oscillation. The onset of the oscillation for the AC frequency smaller than 30 Hz was in close agreement with the delay time scale for the ionic wind effect to occur, that is, the collision response time. Frequency-doubling behavior for the small-scale oscillation has also been observed. Possible mechanisms for the large-scale oscillation and the frequency-doubling behavior have been discussed, although the detailed understanding of the underlying mechanisms will be a future study. (author)

  8. AVTA: GE Energy WattStation AC Level 2 Charging System Testing Results |

    Broader source: Energy.gov (indexed) [DOE]

    Department of Energy PDF icon EV America Test Specifications PDF icon ETA-TP001 Implementation of SAE Standard J1263, February 1996 - Road Load Measurement and Dynamometer Simulation Using Coastdown Techniques PDF icon ETA-TP002 Implementation of SAE Standard J1666, May 1993 - Electric Vehicle Acceleration, Gradeability, and Deceleration Test Procedure PDF icon ETA-HP003 Implementation of SAE J1634, May 1993 - Hybrid Electric Vehicle Energy Consumption and Range Test Procedure PDF icon

  9. AVTA: Siemens-VersiCharge AC Level 2 Charging System Testing...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. ...

  10. AVTA: ChargePoint AC Level 2 Charging System Testing Results...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. ...

  11. AVTA: GE Energy WattStation AC Level 2 Charging System Testing...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. ...

  12. AVTA Voltec AC Level 1 and Level 2 Charging Systems Testing Results...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. ...

  13. Power system design | Princeton Plasma Physics Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    system design Subscribe to RSS - Power system design The design of the systems that would convert fusion energy into heat to create steam that would generate electricity. PPPL engineers design and build state-of-the-art controller for AC to DC converter that manages plasma in upgraded fusion machine The electric current that powers fusion experiments requires superb control. Without it, the magnetic coils the current drives cannot contain and shape the plasma that fuels experiments in

  14. Power systems | Princeton Plasma Physics Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    systems Subscribe to RSS - Power systems The systems, such as fusion power plants, that would generate electricity from fusion. PPPL engineers design and build state-of-the-art controller for AC to DC converter that manages plasma in upgraded fusion machine The electric current that powers fusion experiments requires superb control. Without it, the magnetic coils the current drives cannot contain and shape the plasma that fuels experiments in doughnut-shaped tokamaks correctly. Read more about

  15. DOE 10 CFR Part 431 EERE-2010-BT-TP-0036 RIN 1904-AC-38 Submission of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Comments by Howe Corporation | Department of Energy 0 CFR Part 431 EERE-2010-BT-TP-0036 RIN 1904-AC-38 Submission of Comments by Howe Corporation DOE 10 CFR Part 431 EERE-2010-BT-TP-0036 RIN 1904-AC-38 Submission of Comments by Howe Corporation Comments to the following DOE Proposed Rules: 10 CFR Part 431 [Docket No. EERE-2010-BT-TP-0036] RIN 1904-AC38 Energy Efficiency Program for Certain Commercial and Industrial Equipment: Test Procedures for Automatic Commercial Ice Makers PDF icon

  16. Effect of the valence electron concentration on the bulk modulus and chemical bonding in Ta{sub 2}AC and Zr{sub 2}AC (A=Al, Si, and P)

    SciTech Connect (OSTI)

    Schneider, Jochen M.; Music, Denis; Sun Zhimei

    2005-03-15

    We have studied the effect of the valence electron concentration, on the bulk modulus and the chemical bonding in Ta{sub 2}AC and Zr{sub 2}AC (A=Al, Si, and P) by means of ab initio calculations. Our equilibrium volume and the hexagonal ratio (c/a) agree well (within 2.7% and 1.2%, respectively) with previously published experimental data for Ta{sub 2}AlC. The bulk moduli of both Ta{sub 2}AC and Zr{sub 2}AC increase as Al is substituted with Si and P by 13.1% and 20.1%, respectively. This can be understood since the substitution is associated with an increased valence electron concentration, resulting in band filling and an extensive increase in cohesion.

  17. Superconducting magnetic energy storage for asynchronous electrical systems

    DOE Patents [OSTI]

    Boenig, H.J.

    1984-05-16

    It is an object of the present invention to provide superconducting magnetic energy storage for a plurality of asynchronous electrical systems. It is a further object of the present invention to provide load leveling and stability improvement in a plurality of independent ac systems using a single superconducting magnetic energy storage coil.

  18. The correction of linear lattice gradient errors using an AC dipole

    SciTech Connect (OSTI)

    Wang,G.; Bai, M.; Litvinenko, V.N.; Satogata, T.

    2009-05-04

    Precise measurement of optics from coherent betatron oscillations driven by ac dipoles have been demonstrated at RHIC and the Tevatron. For RHIC, the observed rms beta-beat is about 10%. Reduction of beta-beating is an essential component of performance optimization at high energy colliders. A scheme of optics correction was developed and tested in the RHIC 2008 run, using ac dipole optics for measurement and a few adjustable trim quadruples for correction. In this scheme, we first calculate the phase response matrix from the. measured phase advance, and then apply singular value decomposition (SVD) algorithm to the phase response matrix to find correction quadruple strengths. We present both simulation and some preliminary experimental results of this correction.

  19. Kondo physics in the single-electron transistor with ac driving

    SciTech Connect (OSTI)

    Nordlander, Peter; Wingreen, Ned S.; Meir, Yigal; Langreth, David C.

    2000-01-15

    Using a time-dependent Anderson Hamiltonian, a quantum dot with an ac voltage applied to a nearby gate is investigated. A rich dependence of the linear response conductance on the external frequency and driving amplitude is demonstrated. At low frequencies a sufficiently strong ac potential produces sidebands of the Kondo peak in the spectral density of the dot, and a slow, roughly logarithmic decrease in conductance over several decades of frequency. At intermediate frequencies, the conductance of the dot displays an oscillatory behavior due to the appearance of Kondo resonances of the satellites of the dot level. At high frequencies, the conductance of the dot can vary rapidly due to the interplay between photon-assisted tunneling and the Kondo resonance. (c) 2000 The American Physical Society.

  20. Negative hydrogen ion beam extraction from an AC heated cathode driven Bernas-type ion source

    SciTech Connect (OSTI)

    Okano, Y.; Miyamoto, N.; Kasuya, T.; Wada, M.

    2015-04-08

    A plasma grid structure was installed to a Bernas-type ion source used for ion implantation equipment. A negative hydrogen (H{sup −}) ion beam was extracted by an AC driven ion source by adjusting the bias to the plasma grid. The extracted electron current was reduced by positively biasing the plasma grid, while an optimum plasma grid bias voltage for negative ion beam extraction was found to be positive 3 V with respect to the arc chamber. Source operations with AC cathode heating show extraction characteristics almost identical to that with DC cathode heating, except a minute increase in H{sup −} current at higher frequency of cathode heating current.

  1. Contract Number DE-AC27-08RV14800 Continuation Page, Modification 138

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract Number DE-AC27-08RV14800 Continuation Page, Modification 138 Attachment 1 DE-AC27-08RV14800, MODIFICATION 138 Replacement Pages (Total: One Hundred Twenty-Five (125) including this Cover Page) * Section H, Pages H-4 and H-24 * Section J, Table of Contents, Page J-1 * Section J, Attachment J.2, Pages J.2-4 thru J.2-7 and J.2.9 * Section J, Attachment J.10, Pages J.10-1 thru J.10-20 * Section J, Attachment J.13, Pages J.13-1 thru J.13-29 * Section J, Attachment J.14, Pages J.14-1 thru

  2. Switch contact device for interrupting high current, high voltage, AC and DC circuits

    DOE Patents [OSTI]

    Via, Lester C.; Witherspoon, F. Douglas; Ryan, John M.

    2005-01-04

    A high voltage switch contact structure capable of interrupting high voltage, high current AC and DC circuits. The contact structure confines the arc created when contacts open to the thin area between two insulating surfaces in intimate contact. This forces the arc into the shape of a thin sheet which loses heat energy far more rapidly than an arc column having a circular cross-section. These high heat losses require a dramatic increase in the voltage required to maintain the arc, thus extinguishing it when the required voltage exceeds the available voltage. The arc extinguishing process with this invention is not dependent on the occurrence of a current zero crossing and, consequently, is capable of rapidly interrupting both AC and DC circuits. The contact structure achieves its high performance without the use of sulfur hexafluoride.

  3. AuRu/AC as an effective catalyst for hydrogenation reactions

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Villa, Alberto; Chan-Thaw, Carine E.; Campisi, Sebastiano; Bianchi, Claudia L.; Wang, Di; Kotula, Paul G.; Kübel, Christian; Prati, Laura

    2015-03-23

    AuRu bimetallic catalysts have been prepared by sequential deposition of Au on Ru or vice versa obtaining different nanostructures: when Ru has been deposited on Au, a Aucore–Rushell has been observed, whereas the deposition of Au on Ru leads to a bimetallic phase with Ru enrichment on the surface. In the latter case, the unexpected Ru enrichment could be attributed to the weak adhesion of Ru on the carbon support, thus allowing Ru particles to diffuse on Au particles. Both structures result very active in catalysing the liquid phase hydrogenolysis of glycerol and levulinic acid but the activity, the selectivitymore » and the stability depend on the structure of the bimetallic nanoparticles. Ru@Au/AC core–shell structure mostly behaved as the monometallic Ru, whereas the presence of bimetallic AuRu phase in Au@Ru/AC provides a great beneficial effect on both activity and stability.« less

  4. National Fuel Cell Bus Program: Accelerated Testing Evaluation Report #2, Alameda-Contra Costa Transit District (AC Transit) and Appendices

    SciTech Connect (OSTI)

    Eudy, L.; Chandler, K.

    2010-06-01

    This is an evaluation of hydrogen fuel cell transit buses operating at AC Transit in revenue service since March 20, 2006, comparing similar diesel buses operating from the same depot. It covers November 2007 through February 2010. Results include implementation experience, fueling station operation, evaluation results at AC Transit (bus usage, availability, fuel economy, maintenance costs, and road calls), and a summary of achievements and challenges encountered during the demonstration.

  5. National Fuel Cell Bus Program: Accelerated Testing Evaluation Report and Appendices, Alameda-Contra Costa Transit District (AC Transit)

    SciTech Connect (OSTI)

    Chandler, K.; Eudy, L.

    2009-01-01

    This is an evaluation of hydrogen fuel cell transit buses operating at AC Transit in revenue service since March 20, 2006 compared to similar diesel buses operating from the same depot. This evaluation report includes results from November 2007 through October 2008. Evaluation results include implementation experience, fueling station operation, fuel cell bus operations at Golden Gate Transit, and evaluation results at AC Transit (bus usage, availability, fuel economy, maintenance costs, and roadcalls).

  6. 222-S LAS&T Contract No. DE-AC27-10RV15051 Conformed thru Initial Award

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract No. DE-AC27-10RV15051 Conformed thru Initial Award i PART I - THE SCHEDULE SECTION D - PACKAGING AND MARKING TABLE OF CONTENTS D.1 PACKAGING ............................................................................................. 1 D.2 MARKING .................................................................................................. 1 222-S LAS&T Contract No. DE-AC27-10RV15051 Conformed thru Initial Award D-1 SECTION D PACKAGING AND MARKING D.1 PACKAGING Preservation,

  7. SF 6110-AC Residual Inventory of Material or Equipment Furnished by or Acquired for Sandia

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AC (10-2014) Supersedes (09-2013) issue Procurement Center RESIDUAL INVENTORY OF MATERIAL OR EQUIPMENT FURNISHED BY OR ACQUIRED FOR SANDIA Contractor: Contractor No.: Item Description/Corporation * Quantity Furnished Residual Estimated Estimated (Sandia Use) Disposition No. (Do NOT include Classified Information) (See below) Acquired Quantity Total Value Weight Remarks * NOTE: Description shall include Drawing/Specification No. and whether item is Classified, Furnished, Acquired, Esplosive,

  8. PPPL engineers design and build state-of-the-art controller for AC to DC

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    converter that manages plasma in upgraded fusion machine | Princeton Plasma Physics Lab PPPL engineers design and build state-of-the-art controller for AC to DC converter that manages plasma in upgraded fusion machine By Raphael Rosen March 7, 2016 Tweet Widget Google Plus One Share on Facebook PPPL scientists Robert Mozulay and Weiguo Que (Photo by Hans Schneider) PPPL scientists Robert Mozulay and Weiguo Que Gallery: A digital firing generator installed in NSTX-U (Photo by Hans Schneider)

  9. Oak Ridge Associated Universities DE-AC05-06OR23100

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Universities DE-AC05-06OR23100 Modification 0515 PART III LIST OF DOCUMENTS, EXHIBITS, AND OTHER ATTACHMENTS SECTION J - LIST OF ATTACHMENTS ATTACHMENT F - KEY PERSONNEL (Revised 1/30/2015) NAME TITLE Harry A. (Andy) Page ORISE Director Donna L. Cragle Director, Health, Energy, and Environment David Hackemeyer Director, National Security Dean M. Evasius Director, Scientific Assessment and Workforce Development J. Phil Andrews Director, Business Operations and Chief Financial Officer Ivan A.

  10. Joint BioEnergy Institute Oxime-NIMS Work Featured on the Cover of ACS

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Chemical Biology Oxime-NIMS Work Featured on the Cover of ACS Chemical Biology - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing

  11. AC losses in untwisted ''in situ'' superconductors above the percolation threshold

    SciTech Connect (OSTI)

    Pan, V.M.; Dzugutov, V.M.; Fisher, L.M.; Flis, V.S.; Latysheva, V.I.; Mukhin, S.I.; Vasilenko, M.G.

    1985-03-01

    Magnetization measurements in the low frequency ac magnetic field for untwisted in situ prepared superconducting Cu-Nb composites are presented. Wires with various degrees of drawing deformation were examined. Penetration depth in the low field region increases with the deformation of the sample. Behavior of the magnetization curves is analyzed on the basis of a simple critical state model allowing for the suppression of screening currents in high magnetic fields. Agreement of the model with the experimental data is discussed.

  12. Sandia Corporation Contract No. DE-AC04-94AL85000

    National Nuclear Security Administration (NNSA)

    Corporation Contract No. DE-AC04-94AL85000 Modification No. 585 Attachment 1 Part III - Section J Appendix D Key Personnel September 11, 2015 (Modification No. 585) The Contractor's employees identified below are determined to be necessary for the successful performance of this Contract. The purpose of this listing is to identify those employees whose initial assignment, reassignment, or replacement shall be subject to the approval of the Contracting Officer, pursuant to the Contract Clause

  13. Degradation of silicon ac-coupled microstrip detectors induced by radiation

    SciTech Connect (OSTI)

    Bacchetta, N.; Gotra, Yu.; Bisello, D.; Canali, C.; Fuochi, P.G.; Paccagnella, A.; Verzellesi, G.

    1993-12-01

    Results are presented showing the radiation response of ac-coupled FOXFET biased microstrip detectors and related test patterns to be used in the microvertex detector of the CDF experiment at Fermi National Laboratory. Radiation tolerance of detectors to gamma and proton irradiation has been tested and the radiation induced variations of the dc electrical parameters have been analyzed. Long term post-irradiation behavior of detector characteristics have been studied, and the relevant room temperature annealing phenomena have been discussed.

  14. Docket No. EERE-2012-BT-TP-0046; RIN 1904-AC52 Ex parte

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    communication Meeting of May 16, 2013 | Department of Energy Ex parte communication Meeting of May 16, 2013 Docket No. EERE-2012-BT-TP-0046; RIN 1904-AC52 Ex parte communication Meeting of May 16, 2013 This memorandum for the record provides a summary of a meeting involving representatives of the Consumer Electronics Association and National Cable & Telecommunications Association with Dr. David Danielson, Assistant Secretary for Energy Efficiency and Renewable Energy. PDF icon CEA memo

  15. Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses:

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Third Evaluation Report - Appendices | Department of Energy Report - Appendices Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Third Evaluation Report - Appendices This report describes operations at Alameda-Contra Costa Transit district for three protoype fuel cell buses and six diesel buses operating from the same location. PDF icon 43545-2.pdf More Documents & Publications Connecticut Transit (CTTRANSIT) Fuel Cell Transit Bus: Second Evaluation Report and

  16. Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses:

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Third Evaluation Report | Department of Energy Report Alameda-Contra Costa Transit District (AC Transit) Fuel Cell Transit Buses: Third Evaluation Report This report describes operations at Alameda-Contra Costa Transit district for three protoype fuel cell buses and six diesel buses operating from the same location. PDF icon 43545-1.pdf More Documents & Publications SunLine Transit Agency Fuel Cell Transit Bus: Fifth Evaluation Report SunLine Transit Agency Hydrogen-Powered Transit

  17. Modification No. M089 Contract No. DE-AC04-00AL66620

    National Nuclear Security Administration (NNSA)

    9 Contract No. DE-AC04-00AL66620 Attachment 1 PART III - LIST OF DOCUMENTS, EXHIBITS, AND OTHER ATTACHMENTS SECTION J - LIST OF ATTACHMENTS APPENDIX D - KEY PERSONNEL May 2, 2005 Pursuant to the clause entitled "Key Personnel," the following positions are considered to be essential to work being performed. General Manager Michael B. Mallory Deputy General Manager Dan J. Swaim Director of Directed Stockpile Programs Dominick Palamara Director of RTBF Programs Michael A. Sabbe

  18. A statistical approach to designing mitigation for induced ac voltages

    SciTech Connect (OSTI)

    Dabkowski, J. [Electro Sciences, Inc., Crystal Lake, IL (United States)

    1996-08-01

    Induced voltage levels on buried pipelines collocated with overhead electric power transmission lines are usually mitigated by means of grounding the pipeline. Maximum effectiveness is obtained when grounds are placed at discrete locations along the pipeline where the peak induced voltages occur. The degree of mitigation achieved is dependent upon the local soil resistivity at these locations. On occasion it may be necessary to employ an extensive distributed grounding system, for example, a parallel buried wire connected to the pipe at periodic intervals. In this situation the a priori calculation of mitigated voltage levels is sometimes made assuming an average value for the soil resistivity. Over long distances, however, the soil resistivity generally varies as a log-normally distributed random variable. The effect of this variability upon the predicted mitigated voltage levels is examined. It is found that the predicted levels exhibit a statistical variability which precludes a precise determination of the mitigated voltage levels. Thus, post commissioning testing of the emplaced mitigation system is advisable.

  19. Efficient uncertainty propagation for network multiphysics systems.

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Journal Article: Efficient uncertainty propagation for network multiphysics systems. Citation Details In-Document Search Title: Efficient uncertainty propagation for network multiphysics systems. Authors: Phipps, Eric T. ; Wildey, Timothy Michael ; Constantine, Paul G. Publication Date: 2013-01-01 OSTI Identifier: 1063360 Report Number(s): SAND2013-0423J DOE Contract Number: AC04-94AL85000 Resource Type: Journal Article Resource Relation: Journal Name:

  20. Introduction to Microelectromechanical Systems (MEMS) failure analysis.

    Office of Scientific and Technical Information (OSTI)

    (Conference) | SciTech Connect Introduction to Microelectromechanical Systems (MEMS) failure analysis. Citation Details In-Document Search Title: Introduction to Microelectromechanical Systems (MEMS) failure analysis. No abstract prepared. Authors: Walraven, Jeremy Allen Publication Date: 2010-08-01 OSTI Identifier: 1024452 Report Number(s): SAND2010-5841C TRN: US201119%%385 DOE Contract Number: AC04-94AL85000 Resource Type: Conference Resource Relation: Conference: Proposed for presentation

  1. Systems and methods for creation of conducting networks of magnetic particles through dynamic self-assembly process

    DOE Patents [OSTI]

    Snezhko, Oleksiy; Aronson, Igor; Kwok, Wai-Kwong

    2011-01-25

    Self-assembly of magnetic microparticles in AC magnetic fields. Excitation of the system by an AC magnetic field provides a variety of patterns that can be controlled by adjusting the frequency and the amplitude of the field. At low particle densities the low-frequency magnetic excitation favors cluster phase formation, while high frequency excitation favors chains and netlike structures. For denser configurations, an abrupt transition to the network phase was obtained.

  2. Causal Analysis of the Inadvertent Contact with an Uncontrolled Electrical Hazardous Energy Source (120 Volts AC)

    SciTech Connect (OSTI)

    David E. James; Dennis E. Raunig; Sean S. Cunningham

    2014-10-01

    On September 25, 2013, a Health Physics Technician (HPT) was performing preparations to support a pneumatic transfer from the HFEF Decon Cell to the Room 130 Glovebox in HFEF, per HFEF OI 3165 section 3.5, Field Preparations. This activity involves an HPT setting up and climbing a portable ladder to remove the 14-C meter probe from above ball valve HBV-7. The HPT source checks the meter and probe and then replaces the probe above HBV-7, which is located above Hood ID# 130 HP. At approximately 13:20, while reaching past the HBV-7 valve position indicator switches in an attempt to place the 14-C meter probe in the desired location, the HPT’s left forearm came in contact with one of the three sets of exposed terminals on the valve position indication switches for HBV 7. This resulted in the HPT receiving an electrical shock from a 120 Volt AC source. Upon moving the arm, following the electrical shock, the HPT noticed two exposed electrical connections on a switch. The HPT then notified the HFEF HPT Supervisor, who in turn notified the MFC Radiological Controls Manager and HFEF Operations Manager of the situation. Work was stopped in the area and the hazard was roped off and posted to prevent access to the hazard. The HPT was escorted by the HPT Supervisor to the MFC Dispensary and then preceded to CFA medical for further evaluation. The individual was evaluated and released without any medical restrictions. Causal Factor (Root Cause) A3B3C01/A5B2C08: - Knowledge based error/Attention was given to wrong issues - Written Communication content LTA, Incomplete/situation not covered The Causal Factor (root cause) was attention being given to the wrong issues during the creation, reviews, verifications, and actual performance of HFEF OI-3165, which covers the need to perform the weekly source check and ensure placement of the probe prior to performing a “rabbit” transfer. This resulted in the hazard not being identified and mitigated in the procedure. Work activities with in HFEF-OI-3165 placed the HPT in proximity of an unmitigated hazard directly resulting in this event. Contributing Factor A3B3C04/A4B5C04: - Knowledge Based Error, LTA Review Based on Assumption That Process Will Not Change - Change Management LTA, Risks/consequences associated with change not adequately reviewed/assessed Prior to the pneumatic system being out of service, the probe and meter were not being source checked together. The source check issue was identified and addressed during the period of time when the system was out of service. The corrective actions for this issue resulted in the requirement that a meter and probe be source checked together as it is intended to be used. This changed the activity and required an HPT to weekly, when in use, remove and install the probe from above HBV-7 to meet the requirement of LRD 15001 Part 5 Article 551.5. Risks and consequences associated with this change were not adequately reviewed or assessed. Failure to identify the hazard associated with this change directly contributed to this event.

  3. Photovoltaic System Modeling. Uncertainty and Sensitivity Analyses

    SciTech Connect (OSTI)

    Hansen, Clifford W.; Martin, Curtis E.

    2015-08-01

    We report an uncertainty and sensitivity analysis for modeling AC energy from ph otovoltaic systems . Output from a PV system is predicted by a sequence of models. We quantify u ncertainty i n the output of each model using empirical distribution s of each model's residuals. We propagate uncertainty through the sequence of models by sampli ng these distributions to obtain a n empirical distribution of a PV system's output. We consider models that: (1) translate measured global horizontal, direct and global diffuse irradiance to plane - of - array irradiance; (2) estimate effective irradiance; (3) predict cell temperature; (4) estimate DC voltage, current and power ; (5) reduce DC power for losses due to inefficient maximum power point tracking or mismatch among modules; and (6) convert DC to AC power . O ur analysis consider s a notional PV system com prising an array of FirstSolar FS - 387 modules and a 250 kW AC inverter ; we use measured irradiance and weather at Albuquerque, NM. We found the uncertainty in PV syste m output to be relatively small, on the order of 1% for daily energy. We found that unce rtainty in the models for POA irradiance and effective irradiance to be the dominant contributors to uncertainty in predicted daily energy. Our analysis indicates that efforts to reduce the uncertainty in PV system output predictions may yield the greatest improvements by focusing on the POA and effective irradiance models.

  4. Discharging a DC bus capacitor of an electrical converter system

    DOE Patents [OSTI]

    Kajouke, Lateef A; Perisic, Milun; Ransom, Ray M

    2014-10-14

    A system and method of discharging a bus capacitor of a bidirectional matrix converter of a vehicle are presented here. The method begins by electrically shorting the AC interface of the converter after an AC energy source is disconnected from the AC interface. The method continues by arranging a plurality of switching elements of a second energy conversion module into a discharge configuration to establish an electrical current path from a first terminal of an isolation module, through an inductive element, and to a second terminal of the isolation module. The method also modulates a plurality of switching elements of a first energy conversion module, while maintaining the discharge configuration of the second energy conversion module, to at least partially discharge a DC bus capacitor.

  5. AC-magnetotransport of a 2DEG in the quantum Hall regime

    SciTech Connect (OSTI)

    Hernndez, C.; Chaubet, C.

    2014-05-15

    In this paper we present an ac-magneto-transport study of a two-dimensional electron gas (2DEG) in the quantum Hall effect (QHE) regime, for frequencies in the range [100Hz, 1MHz]. We present a new approach to understand admittance measurements based in the Landauer-Buttiker formalism for QHE edge channels and taking into account the capacitance and the topology of the cables connected to the contacts used in the measurements. Our model predicts an universal behavior with the a-dimensional parameter RC? where R is the 2 wires resistance of the 2DEG, C the capacitance cables and the angular frequency, in agreement with experiments.

  6. Idaho National Lab Contract DE-AC07-05ID14517

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract No. DE-AC07-05ID14517 Modifications You are here: DOE-ID Home > Contracts, Financial Assistance & Solicitations > INL Contract > INL Basic Contract Blue Line Free Acrobat Reader Link The documents listed below represent an electronic copy of modifications to the contract for the Management and Operation of the INL awarded to Battelle Energy Alliance, LLC. These documents are in PDF format. The Adobe Reader is required to access them. If you do not currently have the Acrobat

  7. WTP Contract No. DE-AC27-01RV14136 Page 1

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Performance Evaluation and Measurement Plan (Rev 0) Evaluation Period 2013-B - 07/01/13 to 12/31/13 WTP Contract No. DE-AC27-01RV14136 Page 1 WTP PERFORMANCE EVALUATION & MEASUREMENT PLAN - PERIOD 2013-B TABLE OF CONTENTS Num ber PEMP General Information A Introduction 1 B Roles and Responsibilities 2 C Process and Schedule 4 D Contractor Self-Assessment 4 E Incentive Ratings and Definitions 5 Award Fee Peformance Objectives 5 Perform ance Objectives: 1 Self-Analysis/Assessm

  8. DE-AC27-10RV15051 Modification A001

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    DE-AC27-10RV15051 Modification A001 Page 2 of 12 The purpose of this change order is to (1) add American Recovery and Reinvestment Act (ARRA) tasks (2) obligate ARRA funding, (3) incorporate applicable ARRA clauses. 1. CHANGE ORDER This change order modification is issued pursuant to contract clause I-75, entitled FAR 52.243-2 - Changes - Cost-Reimbursement (Aug 1987), Alternate I (Apr 1984). Under this authority the contractor is directed to proceed with performance of ARRA tasks as outlined

  9. DE-AC27-I1ORVI15051 Modification A009

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    I1ORVI15051 Modification A009 Page 2 of 6 A. The purpose of this modification is to make an equitable adjustment to contract cost relevant to transition cost and the stop work order dated November 27, 2009, and modify the period of performance as detailed below: Reference: 1. ATL Letter dated May 24, 2010, from J.G. Hwang, ATL, to D.A. Gallegos, ORP, "CLIN 1 TRANSITION COST OVERRUN PROPOSAL (Contract Number DE-AC27-1I0RV 1505 1) Background: The contract was awarded on November 20, 2009, and

  10. Tank Operations Contract No. DE-AC27-08RV14800

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract No. DE-AC27-08RV14800 Modification 096 Page 2 of 6 Continuation Page, SF30 Block 14 Purpose of Modification: The following changes are being made pursuant to FAR 52.243-2, Changes-Cost Reimbursement (AUG 1987): 1. The Contractor is hereby authorized to incur costs, not to exceed $400,000.00, to implement Executive Order (EO) 13514, "Federal Leadership in Environmental, Energy and Economic Performance" as referenced in letter No. NA-DOE-HQ. Implementation of this Order also

  11. PPPL engineers design and build state-of-the-art controller for AC to DC

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    converter that manages plasma in upgraded fusion machine | Princeton Plasma Physics Lab PPPL engineers design and build state-of-the-art controller for AC to DC converter that manages plasma in upgraded fusion machine By Raphael Rosen March 7, 2016 Tweet Widget Google Plus One Share on Facebook PPPL scientists Robert Mozulay and Weiguo Que (Photo by Hans Schneider) PPPL scientists Robert Mozulay and Weiguo Que Gallery: One of the digital firing generators installed in NSTX-U (Photo by Hans

  12. SF-30 Block 14 (Continued) DE-AC27-08 RV14800, Modification 074

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SF-30 Block 14 (Continued) DE-AC27-08 RV14800, Modification 074 Page 2 of 3 1. The purpose of this contract modification is to definitize the remaining $478,204 of ARRA funding obligated to the contract in previous contract change orders. This modification changes the funding source for work that is already priced in the contract and moves FY 2011 base funded scope to ARRA funded scope for two projects that will be partially funded with ARRA funds (previously undefinitized), and partially funded

  13. Mission Support Contract Section J Contract No. DE-AC06-09RL14728

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    J-7-1 ATTACHMENT J-7 SMALL DISADVANTAGED BUSINESS PARTICIPATION PROGRAM TARGETS Mission Support Contract Section J Contract No. DE-AC06-09RL14728 J-7-2 SMALL DISADVANTAGED BUSINESS PARTICIPATION PROGRAM TARGETS A. Mission Support Alliance, LLC NAICS Co d e De s c rip tio n o f NAICS S u b s e c to rs S DB Do lla rs P e rc e n ta g e * 531312 Nonresidential Property Managers $22,924,301 0.7 541614 Process, Physical Distribution and Logistics Consulting Services $22,953,821 0.8 541690 Scientific

  14. Microsoft Word - DE-AC06-09RL15009 Section B.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    B Page B-1 Section B Supplies or Services and Prices Table of Contents Section Title Page No. B.1 Workers' Compensation Claims Administrative Services B-2 B.2 Obligation of Funds and Limitation of Government Financial Liability B-2 B.3 Schedule B-2 B.4 Reimbursable Expenses B-4 B.5 Payment of Performance Based Fee B-4 Workers' Compensation Claims Services Part I Contract No. DE-AC06-09RL15009 Section B Page B-2 B.1 Workers' Compensation Claims Administrative Services This is a fixed-unit price

  15. Microsoft Word - DE-AC06-09RL15009 Section D.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    D Page D-1 Section D Packaging and Marking Table of Contents Section Title Page No. D.1 Packaging D-2 D.2 Marking D-2 Workers' Compensation Claims Services Part I Contract No. DE-AC06-09RL15009 Section D Page D-2 D.1 Packaging Preservation, packaging, and packing for shipment or mailing of all work delivered hereunder shall be in accordance with good commercial practices and adequate to ensure acceptance by common carrier and safe transportation at the most economical rate(s). D.2 Marking a.

  16. Microsoft Word - DE-AC06-09RL15009 Section F.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    F Page F-1 Section F Deliveries and Performance Table of Contents Section Title Page No. F.1 Period of Performance F-2 F.2 Principal Place of Performance F-2 F.3 Reporting Requirements F-2 F.4 FAR 52.242-15 Stop-Work Order. (AUG 1989) F-4 F.5 FAR 52.242-17 Government Delay of Work. (APR 1984) F-5 Workers' Compensation Claims Services Part I Contract No.DE-AC06-09RL15009 Section F Page F-2 F.1 Period of Performance The period of performance (exclusive of the Transition Period) for the work

  17. Microsoft Word - DE-AC06-09RL15009 Section G.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    G Page G-1 Section G Contract Administration Plan Table of Contents Section Title Page No. G.1 Contract Administration G-2 G.2 Billing Instructions G-2 G.3 Modification Authority G-3 G.4 DEAR 952.242-70 Technical Direction (DEC 2000) G-3 G.5 Administrative Reporting Requirements G-5 Workers' Compensation Claims Services Part I Contract No. DE-AC06-09RL15009 Section G Page G-2 G.1 Contract Administration The DOE Contracting Officer and correspondence address is: Andrew H. Wirkkala, Contracting

  18. Contract No. DE-AC02-07CH11358 Contract Modification No. 0192

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract Modification No. 0192 Section J Appendix H ATTACHMENT J.8 APPENDIX H SMALL BUSINESS SUBCONTRACTING PLAN Applicable to the Operation of AMES Laboratory Contract No. DE-AC02-07CH11358 'I'Hv. Ames Laboratory CtNrlng M*t*rl*l* & En*rgy So/utlotJI U ~ S, 0 £ J 1 A HT.M!NT C H' BNE UGY 2016 Subcontracting Plan Contractor: Ames Laboratory atlowa State Univers'ity (in eSRS a fowa State Equities Corporation) Address: 224 TASF, Ames IA 50011-3020 Solicitation or Contract Number: DE

  19. Contract No. DE-AC02-07CH11358 Section E Contract Modification No. 133

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    E Contract Modification No. 133 i PART I SECTION E INSPECTION AND ACCEPTANCE PAGE NO. E.1 - FAR 52.246-9 - INSPECTION OF RESEARCH AND DEVELOPMENT (SHORT FORM) (APR 1984) E-1 E.2 - CERTIFICATION E-1 Contract No. DE-AC02-07CH11358 Section E Contract Modification No.133 E-1 PART I SECTION E - INSPECTION AND ACCEPTANCE E.1 - FAR 52.246-9 - INSPECTION OF RESEARCH AND DEVELOPMENT (SHORT FORM) (APR 1984) The Government has the right to inspect and evaluate the work performed or being performed under

  20. Contract No. DE-AC05-06OR23100, Modification A002

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Contract No. DE-AC04-94AL85000 Modification No. 473 Page 2 of 36 1. Section B, Clause B-2, Contract Type and Value is amended as follows: (i) Paragraph (b) is revised to add the total estimated cost entry under "Contract Periods" and "Estimated Cost" for FY 2013, changing the "TOTAL through" entry, and adding a place holder for the two option periods as follows: Add: October 1, 2012 through September 30, 2013 $ 2,462,698,305 Option 1: October 1, 2013 through $ TBD*

  1. Contract Number DE-AC27-08RV14800 Continuation Page, Modification 360

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Number DE-AC27-08RV14800 Continuation Page, Modification 360 Page 2 of 4 The following changes are hereby incorporated into the contract under the authority of Federal Acquisition Regulation (FAR) 52.243-2 Changes-Cost Reimbursement, at no additional cost to the Government. 1. Update Contract Section H-15(f), Key Personnel for this Contract, to update the list as follows: FROM: Name Position Mr. Lyden David Olson TOC Project Manager Mr. Robert E. Wilkinson Manager, ESH&Q Mr. Doug Greenwell

  2. ac response of thin superconductors in the flux-creep regime

    SciTech Connect (OSTI)

    Gurevich, A. [Applied Superconductivity Center, University of Wisconsin, Madison, Wisconsin 53706 (United States)] [Applied Superconductivity Center, University of Wisconsin, Madison, Wisconsin 53706 (United States); Brandt, E.H. [Max Planck Institute fuer Metallforschung, D-70506 Stuttgart (Germany)] [Max Planck Institute fuer Metallforschung, D-70506 Stuttgart (Germany)

    1997-05-01

    We calculate both analytically and numerically the ac susceptibility {chi}({omega}) and the nonlinear electromagnetic response of thin superconductor strips and disks of constant thickness in a perpendicular time-dependent magnetic field B{sub a}(t)=B{sub 0}cos{omega}t, taking account of the strong nonlinearity of the voltage-current characteristics below the irreversibility line. We consider integral equations of nonlinear nonlocal flux diffusion for a wide class of thermally activated creep models. It is shown that thin superconductors, despite being fully in the critical state, exhibit a universal Meissner-like electromagnetic response in the dissipative flux-creep regime. The expression for the linear ac susceptibility during flux creep appears to be similar to the susceptibility of Ohmic conductors, but with the relaxation time constant replaced by the time t elapsed after flux creep has started. This result is independent of any material parameter or temperature or dc field. For {omega}t{gt}1, we obtain {chi}({omega}){approx}{minus}1+pln(qi{omega}t)/(i{omega}t), where p and q are constants. Above a critical ac amplitude B{sub 0}=B{sub l}, the local response of the electric field becomes nonlinear, and there are two distinctive nonlinear regimes at B{sub 0}{gt}B{sub l}, where B{sub l}{approximately}s(d/a){sup 1/2}B{sub p}, B{sub p} is a characteristic field of full flux penetration, s(T,B)={vert_bar}dlnj/dlnt{vert_bar} is the dimensionless flux-creep rate and d and a are the sample thickness and width, respectively. For B{sub l}{lt}B{sub 0}{lt}B{sub h}({omega}) the response of the electric field is strongly nonlinear but nonhysteretic, since the ac field B{sub a}(t) does not cause a periodic inversion of the critical state. As a result, the magnetic moment exhibits a Meissner-like {ital nondissipative} response, in stark contrast to the Bean model. (Abstract Truncated)

  3. THE HST/ACS COMA CLUSTER SURVEY. II. DATA DESCRIPTION AND SOURCE CATALOGS

    SciTech Connect (OSTI)

    Hammer, Derek; Verdoes Kleijn, Gijs; Den Brok, Mark; Peletier, Reynier F.; Hoyos, Carlos; Balcells, Marc; Aguerri, Alfonso L.; Ferguson, Henry C.; Goudfrooij, Paul; Carter, David; Guzman, Rafael; Smith, Russell J.; Lucey, John R.; Graham, Alister W.; Trentham, Neil; Peng, Eric; Puzia, Thomas H.; Jogee, Shardha; Batcheldor, Dan; Bridges, Terry J.

    2010-11-15

    The Coma cluster, Abell 1656, was the target of an HST-ACS Treasury program designed for deep imaging in the F475W and F814W passbands. Although our survey was interrupted by the ACS instrument failure in early 2007, the partially completed survey still covers {approx}50% of the core high-density region in Coma. Observations were performed for 25 fields that extend over a wide range of cluster-centric radii ({approx}1.75 Mpc or 1{sup 0}) with a total coverage area of 274 arcmin{sup 2}. The majority of the fields are located near the core region of Coma (19/25 pointings) with six additional fields in the southwest region of the cluster. In this paper, we present reprocessed images and SEXTRACTOR source catalogs for our survey fields, including a detailed description of the methodology used for object detection and photometry, the subtraction of bright galaxies to measure faint underlying objects, and the use of simulations to assess the photometric accuracy and completeness of our catalogs. We also use simulations to perform aperture corrections for the SEXTRACTOR Kron magnitudes based only on the measured source flux and its half-light radius. We have performed photometry for {approx}73,000 unique objects; approximately one-half of our detections are brighter than the 10{sigma} point-source detection limit at F814W = 25.8 mag (AB). The slight majority of objects (60%) are unresolved or only marginally resolved by ACS. We estimate that Coma members are 5%-10% of all source detections, which consist of a large population of unresolved compact sources (primarily globular clusters but also ultra-compact dwarf galaxies) and a wide variety of extended galaxies from a cD galaxy to dwarf low surface brightness galaxies. The red sequence of Coma member galaxies has a color-magnitude relation with a constant slope and dispersion over 9 mag (-21 < M {sub F814W} < -13). The initial data release for the HST-ACS Coma Treasury program was made available to the public in 2008 August. The images and catalogs described in this study relate to our second data release.

  4. Contract No. DE-AC02-09CH11466 Section F

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Modification No. 0164 Contract No. DE-AC02-09CH11466 Section F i PART I SECTION F DELIVERIES OR PERFORMANCE TABLE OF CONTENTS CLAUSE NO. TITLE OF CLAUSE F.1 PERIOD OF PERFORMANCE (Revised by Prime Contract Modification 041 - 07/13/2010; 0137 - 10/28/2013; 0164 - 08/07/2014) F.2 AWARD TERM INCENTIVE (SPECIAL) F.3 FAR 52.242-15 - STOP WORK ORDER (AUG 1989) ALTERNATE I (APR 1984) F.4 STOP WORK AND SHUTDOWN AUTHORITY F.5 PRINCIPAL PLACE OF PERFORMANCE Modification No. 0164 Contract No.

  5. Los Alamos National Security, LLC Contract No. DE-AC52-06NA25396

    National Nuclear Security Administration (NNSA)

    Los Alamos National Security, LLC Contract No. DE-AC52-06NA25396 Attachment to Modification No. 150 PART III - SECTION J APPENDIX G October 5, 2010 [Modified by Modification No. A009, A015, A018, A019, A021, A027, M033, M041, M042, M046, M056, M062, M069, M078, M103, M133, 150] LIST OF APPLICABLE DIRECTIVES In addition to the list of applicable directives listed below, the Contractor shall also comply with supplementary directives, (e.g., manuals) which are invoked by a Contractor Requirements

  6. Flow monitoring and control system for injection wells

    DOE Patents [OSTI]

    Corey, J.C.

    1991-01-01

    The present invention relates to a system for monitoring and controlling the rate of fluid flow from an injection well used for in-situ remediation of contaminated groundwater. The United States Government has rights in this invention pursuant to Contract No. DE-AC09-89SR18035 between the US Department of Energy and Westinghouse Savannah River Company.

  7. In-situ remediation system for groundwater and soils

    DOE Patents [OSTI]

    Corey, J.C.; Kaback, D.S.; Looney, B.B.

    1991-01-01

    The present invention relates to a system for in-situ remediation of contaminated groundwater and soil. In particular the present invention relates to stabilizing toxic metals in groundwater and soil. The United States Government has rights in this invention pursuant to Contract No. DE-AC09-89SR18035 between the US Department of Energy and Westinghouse Savannah River Company.

  8. Cost estimation of HVDC transmission system of Bangkas NPP candidates

    SciTech Connect (OSTI)

    Liun, Edwaren Suparman

    2014-09-30

    Regarding nuclear power plant development in Bangka Island, it can be estimated that produced power will be oversupply for the Bangka Island and needs to transmit to Sumatra or Java Island. The distance between the regions or islands causing considerable loss of power in transmission by alternating current, and a wide range of technical and economical issues. The objective of this paper addresses to economics analysis of direct current transmission system to overcome those technical problem. Direct current transmission has a stable characteristic, so that the power delivery from Bangka to Sumatra or Java in a large scale efficiently and reliably can be done. HVDC system costs depend on the power capacity applied to the system and length of the transmission line in addition to other variables that may be different.

  9. AC transport in p-Ge/GeSi quantum well in high magnetic fields

    SciTech Connect (OSTI)

    Drichko, I. L.; Malysh, V. A.; Smirnov, I. Yu.; Golub, L. E.; Tarasenko, S. A.; Suslov, A. V.; Mironov, O. A.; Kummer, M.; Känel, H. von

    2014-08-20

    The contactless surface acoustic wave technique is implemented to probe the high-frequency conductivity of a high-mobility p-Ge/GeSi quantum well structure in the regime of integer quantum Hall effect (IQHE) at temperatures 0.3–5.8 K and magnetic fields up to 18 T. It is shown that, in the IQHE regime at the minima of conductivity, holes are localized and ac conductivity is of hopping nature and can be described within the “two-site” model. The analysis of the temperature and magnetic-field-orientation dependence of the ac conductivity at odd filing factors enables us to determine the effective hole g-factor, |g{sub zz}|≈4.5. It is shown that the in-plane component of the magnetic field leads to a decrease in the g-factor as well as increase in the cyclotron mass, which is explained by orbital effects in the complex valence band of germanium.

  10. AuRu/AC as an effective catalyst for hydrogenation reactions

    SciTech Connect (OSTI)

    Villa, Alberto; Chan-Thaw, Carine E.; Campisi, Sebastiano; Bianchi, Claudia L.; Wang, Di; Kotula, Paul G.; Kübel, Christian; Prati, Laura

    2015-03-23

    AuRu bimetallic catalysts have been prepared by sequential deposition of Au on Ru or vice versa obtaining different nanostructures: when Ru has been deposited on Au, a Aucore–Rushell has been observed, whereas the deposition of Au on Ru leads to a bimetallic phase with Ru enrichment on the surface. In the latter case, the unexpected Ru enrichment could be attributed to the weak adhesion of Ru on the carbon support, thus allowing Ru particles to diffuse on Au particles. Both structures result very active in catalysing the liquid phase hydrogenolysis of glycerol and levulinic acid but the activity, the selectivity and the stability depend on the structure of the bimetallic nanoparticles. Ru@Au/AC core–shell structure mostly behaved as the monometallic Ru, whereas the presence of bimetallic AuRu phase in Au@Ru/AC provides a great beneficial effect on both activity and stability.

  11. AC Resonant charger with charge rate unrelated to primary power frequency

    DOE Patents [OSTI]

    Watson, Harold

    1982-01-01

    An AC resonant charger for a capacitive load, such as a PFN, is provided with a variable repetition rate unrelated to the frequency of a multi-phase AC power source by using a control unit to select and couple the phase of the power source to the resonant charger in order to charge the capacitive load with a phase that is the next to begin a half cycle. For optimum range in repetition rate and increased charging voltage, the resonant charger includes a step-up transformer and full-wave rectifier. The next phase selected may then be of either polarity, but is always selected to be of a polarity opposite the polarity of the last phase selected so that the transformer core does not saturate. Thyristors are used to select and couple the correct phase just after its zero crossover in response to a sharp pulse generated by a zero-crossover detector. The thyristor that is turned on then automatically turns off after a full half cycle of its associated phase input. A full-wave rectifier couples the secondary winding of the transformer to the load so that the load capacitance is always charged with the same polarity.

  12. Ac resonant charger with charge rate unrelated to preimary power requency

    DOE Patents [OSTI]

    Not Available

    1979-12-07

    An ac resonant charger for a capacitive load, such as a pulse forming network (PFN), is provided with a variable repetition rate unrelated to the frequency of a multi-phase ac power source by using a control unit to select and couple the phase of the power source to the resonant charger in order to charge the capacitive load with a phase that is the next to begin a half cycle. For optimum range in repetition rate and increased charging voltage, the resonant charger includes a step-up transformer and full-wave rectifier. The next phase selected may then be of either polarity, but is always selected to be of a polarity opposite the polarity of the last phase selected so that the transformer core does not saturate. Thyristors are used to select and couple the correct phase just after its zero crossover in response to a sharp pulse generated by a zero-crossover detector. The thyristor that is turned on then automatically turns off after a full half cycle of its associated phase input. A full-wave rectifier couples the secondary winding of the transformer to the load so that the load capacitance is always charged with the same polarity.

  13. Elimination of direct current distribution systems from new generating stations

    SciTech Connect (OSTI)

    Jancauskas, J.R.

    1996-12-31

    This paper advances the concept that it may be both possible and advantageous to eliminate the traditional direct current distribution system from a new generating station. The latest developments in uninterruptible power supply (UPS) technology are what have made this option technically feasible. A traditional dc distribution system will be compared to an ac distribution system supplied by a UPS to investigate the merits of the proposed approach.

  14. Voices of Experience | Advanced Distribution Management Systems_brochure.indd

    Energy Savers [EERE]

    Insights into Advanced Distribution Management Systems VOICES of Experience February, 2015 Prepared for the U.S. Department of Energy by the National Renewable Energy Laboratory under contract No. DE-AC36-08G028308, Subtask SG10.1011 in conjunction with Energetics Incorporated under contract No. GS-10F-0103J, Subtask J3806.0002. INSIGHTS INTO ADVANCED DISTRIBUTION MANAGEMENT SYSTEMS | DOE 3 Voices of Experience | Advanced Distribution Management Systems When people think of the electric power

  15. NREL: Energy Systems Integration - Prototype and Component Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Prototype and Component Development NREL develops and tests prototype technologies in its Energy Systems Integration Facility, which can accommodate large power system components. Unique feature such as petascale computing, interconnected AC and DC power circuits, an integrated SCADA system, megawatt-scale power-in-the-loop, and state-of-the-art data analysis and visualization capabilities enable us to help companies bring new technologies to market with more confidence and less risk. Creating

  16. The case for extensible operating systems for exascale. (Conference) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect The case for extensible operating systems for exascale. Citation Details In-Document Search Title: The case for extensible operating systems for exascale. Authors: Ferreira, Kurt Brian ; Riesen, Rolf Publication Date: 2012-07-01 OSTI Identifier: 1064401 Report Number(s): SAND2012-5716C DOE Contract Number: AC04-94AL85000 Resource Type: Conference Resource Relation: Conference: Proposed for presentation at the Workshop on Exascale Operating Systems and Runtime Software held

  17. COR-Y12-12/7/2012-21660 DE-AC05-00OR22800 DOE Form

    National Nuclear Security Administration (NNSA)

    COR-Y12-12/7/2012-21660 DE-AC05-00OR22800 DOE Form (04/1991) U.S. Department of Energy Requirements Change Notice No.: NNSA-49 Page 1 of 36 Pages PROJECT: Baseline List of Required Compliance Documents LOCATION: Oak Ridge, Tennessee CONTRACTOR: Babcock & Wilcox Technical Services Y-12, LLC CONTRACT NO.: DE-AC05-00OR22800, I.85, Laws, Regulations, and DOE Directives (December 2000), DEAR 970.5204-2 DATE OF CONTRACT: August 31, 2000 This Requirements Change Notice (RCN) No. NNSA-49

  18. Systems and methods for reducing transient voltage spikes in matrix converters

    DOE Patents [OSTI]

    Kajouke, Lateef A.; Perisic, Milun; Ransom, Ray M.

    2013-06-11

    Systems and methods are provided for delivering energy using an energy conversion module that includes one or more switching elements. An exemplary electrical system comprises a DC interface, an AC interface, an isolation module, a first conversion module between the DC interface and the isolation module, and a second conversion module between the AC interface and the isolation module. A control module is configured to operate the first conversion module to provide an injection current to the second conversion module to reduce a magnitude of a current through a switching element of the second conversion module before opening the switching element.

  19. Controller for controlling operation of at least one electrical load operating on an AC supply, and a method thereof

    DOE Patents [OSTI]

    Cantin, Luc; Deschenes, Mario; D'Amours, Mario

    1995-08-15

    A controller is provided for controlling operation of at least one electrical load operating on an AC supply having a typical frequency, the AC supply being provided via power transformers by an electrical power distribution grid. The controller is associated with the load and comprises an input interface for coupling the controller to the grid, a frequency detector for detecting the frequency of the AC supply and producing a signal indicative of the frequency, memory modules for storing preprogrammed commands, a frequency monitor for reading the signal indicative of the frequency and producing frequency data derived thereof, a selector for selecting at least one of the preprogrammed commands with respect to the frequency data, a control unit for producing at least one command signal representative of the selected preprogrammed commands, and an output interface including a device responsive to the command signal for controlling the load. Therefore, the load can be controlled by means of the controller depending on the frequency of the AC supply.

  20. Mission Support Contract Attachment J.10 Contract No. DE-AC06-09RL14728 Modification 502

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Attachment J.10 Contract No. DE-AC06-09RL14728 Modification 502 Table of Contents J.10-1 SERVICE CONTRACT ACT: WAGE DETERMINATION ...................................................................... 2 J.10-2 DAVIS BACON ACT: GENERAL DECISION ..................................................................................... 22 J.10-3 COLLECTIVE BARGAINING ACT: WAGE DETERMINATION ........................................................... 33 Mission Support Contract Attachment J.10 Contract

  1. Power Systems Integration Laboratory (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-10-01

    This fact sheet describes the purpose, lab specifications, applications scenarios, and information on how to partner with NREL's Power Systems Integration Laboratory at the Energy Systems Integration Facility. At NREL's Power Systems Integration Laboratory in the Energy Systems Integration Facility (ESIF), research focuses on developing and testing large-scale distributed energy systems for grid-connected, stand-alone, and microgrid applications. The laboratory can accommodate large power system components such as inverters for photovoltaic (PV) and wind systems, diesel and natural gas generators, battery packs, microgrid interconnection switchgear, and vehicles. Closely coupled with the research electrical distribution bus at the ESIF, the Power Systems Integration Laboratory will offer power testing capability of megawatt-scale DC and AC power systems, as well as advanced hardware-in-the-loop and model-in-the-loop simulation capabilities. Thermal heating and cooling loops and fuel also allow testing of combined heating/cooling and power systems (CHP).

  2. Microsoft Word - DE-AC06-09RL15009 Section I.doc

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    II Contract No. DE-AC06-09RL15009 Section I Page I-1 Section I Part II - Contract Clauses Table of Contents Section Title Page No. I.1 FAR 52.252-2 Clauses Incorporated by Reference (Feb 1998) I-2 I.2 FAR 52.217-8 Option to Extend Services (Nov 1999) I-4 I.3 FAR 52.217-9 Option to Extend the Term of the Contract (Mar 2000) I-4 I.4 FAR 52.222-42 Statement of Equivalent Rates for Federal Hires (May 1989) I-4 I.5 DEAR 970.5204-2 Laws, Regulations and DOE Directives (Dec 2000) I-4 I.6 DEAR

  3. Massively Parallel Models of the Human Circulatory System (Conference) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Massively Parallel Models of the Human Circulatory System Citation Details In-Document Search Title: Massively Parallel Models of the Human Circulatory System Authors: Randles, A ; Draeger, E W ; Oppelstrup, T ; Krauss, W ; Gunnels, J Publication Date: 2015-04-24 OSTI Identifier: 1241975 Report Number(s): LLNL-CONF-670030 DOE Contract Number: AC52-07NA27344 Resource Type: Conference Resource Relation: Conference: Presented at: Supercomputing 2015, Austin, TX, United States,

  4. Self-Organized Pattern Formation in Sedimentary Geochemical Systems. (Book)

    Office of Scientific and Technical Information (OSTI)

    | SciTech Connect Book: Self-Organized Pattern Formation in Sedimentary Geochemical Systems. Citation Details In-Document Search Title: Self-Organized Pattern Formation in Sedimentary Geochemical Systems. Abstract not provided. Authors: Wang, Yifeng Publication Date: 2015-09-01 OSTI Identifier: 1228821 Report Number(s): SAND2015-7601B 603562 DOE Contract Number: AC04-94AL85000 Resource Type: Book Publisher: SPEM Publications Research Org: Sandia National Laboratories (SNL-NM), Albuquerque,

  5. A posteriori error analysis of parameterized linear systems using spectral

    Office of Scientific and Technical Information (OSTI)

    methods. (Journal Article) | SciTech Connect Journal Article: A posteriori error analysis of parameterized linear systems using spectral methods. Citation Details In-Document Search Title: A posteriori error analysis of parameterized linear systems using spectral methods. Abstract not provided. Authors: Constantine, Paul ; Butler, Troy Publication Date: 2011-07-01 OSTI Identifier: 1106467 Report Number(s): SAND2011-4711J 463817 DOE Contract Number: AC04-94AL85000 Resource Type: Journal

  6. Optical system properties of a reconfigurable MEMS interconnect.

    Office of Scientific and Technical Information (OSTI)

    (Conference) | SciTech Connect system properties of a reconfigurable MEMS interconnect. Citation Details In-Document Search Title: Optical system properties of a reconfigurable MEMS interconnect. No abstract prepared. Authors: Spahn, Olga Blum ; Grossetete, Grant David ; Gass, Fawn Renee ; Kemme, Shanalyn A. ; Dagel, Daryl James Publication Date: 2002-12-01 OSTI Identifier: 913215 Report Number(s): SAND2003-0020C TRN: US200802%%382 DOE Contract Number: AC04-94AL85000 Resource Type:

  7. Preparing for Tomorrow's Systems: Manycore Resilience Patterns and

    Office of Scientific and Technical Information (OSTI)

    Transition. (Conference) | SciTech Connect Preparing for Tomorrow's Systems: Manycore Resilience Patterns and Transition. Citation Details In-Document Search Title: Preparing for Tomorrow's Systems: Manycore Resilience Patterns and Transition. Abstract not provided. Authors: Heroux, Michael Allen Publication Date: 2011-07-01 OSTI Identifier: 1107203 Report Number(s): SAND2011-4710C 465833 DOE Contract Number: AC04-94AL85000 Resource Type: Conference Resource Relation: Conference:

  8. System Software Resilience. (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    System Software Resilience. Citation Details In-Document Search Title: System Software Resilience. Abstract not provided. Authors: Ferreira, Kurt Brian Publication Date: 2014-05-01 OSTI Identifier: 1145816 Report Number(s): SAND2014-4240C 518360 DOE Contract Number: DE-AC04-94AL85000 Resource Type: Conference Resource Relation: Conference: External Advisory Board held June 2-3, 2014 in Albuquerque, NM.; Related Information: Proposed for presentation at the External Advisory Board held June 2-3,

  9. Technical feasibility of storage on large dish stirling systems. (Technical

    Office of Scientific and Technical Information (OSTI)

    Report) | SciTech Connect Technical Report: Technical feasibility of storage on large dish stirling systems. Citation Details In-Document Search Title: Technical feasibility of storage on large dish stirling systems. Authors: Andraka, Charles E. ; Rawlinson, Kim Scott ; Siegel, Nathan Phillip [1] + Show Author Affiliations (Bucknell University, Lewisburg, PA) Publication Date: 2012-09-01 OSTI Identifier: 1055585 Report Number(s): SAND2012-8352 DOE Contract Number: AC04-94AL85000 Resource

  10. The Trinity System (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    The Trinity System Citation Details In-Document Search Title: The Trinity System Authors: Archer, Billy Joe [1] ; Vigil, Benny Manuel [1] + Show Author Affiliations Los Alamos National Laboratory Publication Date: 2015-01-13 OSTI Identifier: 1167239 Report Number(s): LA-UR-15-20221 DOE Contract Number: AC52-06NA25396 Resource Type: Technical Report Research Org: Los Alamos National Laboratory (LANL) Sponsoring Org: DOE/LANL Country of Publication: United States Language: English Subject:

  11. Trinity Advanced Technology System Overview (Technical Report) | SciTech

    Office of Scientific and Technical Information (OSTI)

    Connect Trinity Advanced Technology System Overview Citation Details In-Document Search Title: Trinity Advanced Technology System Overview Authors: Vigil, Benny Manuel [1] + Show Author Affiliations Los Alamos National Laboratory Publication Date: 2014-10-20 OSTI Identifier: 1160100 Report Number(s): LA-UR-14-28143 DOE Contract Number: AC52-06NA25396 Resource Type: Technical Report Research Org: Los Alamos National Laboratory (LANL) Sponsoring Org: DOE/LANL Country of Publication: United

  12. Charging system with galvanic isolation and multiple operating modes

    DOE Patents [OSTI]

    Kajouke, Lateef A.; Perisic, Milun; Ransom, Ray M.

    2013-01-08

    Systems and methods are provided for operating a charging system with galvanic isolation adapted for multiple operating modes. A vehicle charging system comprises a DC interface, an AC interface, a first conversion module coupled to the DC interface, and a second conversion module coupled to the AC interface. An isolation module is coupled between the first conversion module and the second conversion module. The isolation module comprises a transformer and a switching element coupled between the transformer and the second conversion module. The transformer and the switching element are cooperatively configured for a plurality of operating modes, wherein each operating mode of the plurality of operating modes corresponds to a respective turns ratio of the transformer.

  13. Data:9f33a9f9-21ad-47b2-9b1f-4b3771f914ac | Open Energy Information

    Open Energy Info (EERE)

    ad-47b2-9b1f-4b3771f914ac No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic...

  14. Data:C9125b18-da0a-4612-b0c6-3eb6421ac6c2 | Open Energy Information

    Open Energy Info (EERE)

    b0c6-3eb6421ac6c2 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic...

  15. Garbage to hydrocarbon fuel conversion system

    SciTech Connect (OSTI)

    Gould, W.A.

    1986-07-15

    A garbage to hydrocarbon fuel conversion system is described which consists of: (a) a source of combustible garbage; (b) means for pulverizing the garbage; (c) a furnace to burn the garbage; (d) means for transporting the pulverized garbage to the furnace which comprises a motor operated worm feed automatic stoker; (e) a steam generating coil inside the furnace which supplies live steam to power a turbine which in turn powers an alternating current generator; and a condenser which returns remaining the steam to a liquid state for re-circulation through the steam generating coils; (f) means for collecting incompletely combusted waste gases from the furnace; precipitating out dust and light oil for re-combustion in the furnace; and, extracting hydrocarbon gas; where in the means for precipitating out dust and light oil for re-combustion in the furnace comprise a cottrell precipitator wherein oil from an external source is mixed with fine dust received from the exhaust port, wherein an electrostatic charge helps to precipitate the dust; a dust and light oil mixer which provides a homogeneous mixture; and, an oil burner mounted to the furnace whose heat output is supplied to the furnace to add energy thereto; and (g) means for burning trapped heavy gases and removing waste ash from the furnace for disposal.

  16. Occupational Health Services Part I DE-AC06-04RL14383, Modification No. 139 Section B

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    DE-AC06-04RL14383, Modification No. 139 Section B Page B-2 B.1 Occupational Medical Services a. This is a performance-based, cost reimbursement service contract for the rendering of Occupational Medical Services for the U. S. Department of Energy's Hanford Site. The Contractor shall furnish all personnel, facilities, equipment, material, supplies, and services (except as expressly set forth in this contract as furnished by the Government) and otherwise do all things necessary for, or incident

  17. Occupational Health Services Part I DE-AC06-04RL14383, Modification No. 171 Section B

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Occupational Health Services Part I DE-AC06-04RL14383, Modification No. 171 Section B Page B-2 B.1 Occupational Medical Services a. This is a performance-based, cost reimbursement service contract for the rendering of Occupational Medical Services for the U. S. Department of Energy's Hanford Site. The Contractor shall furnish all personnel, facilities, equipment, material, supplies, and services (except as expressly set forth in this contract as furnished by the Government) and otherwise do all

  18. The change in dielectric constant, AC conductivity and optical band gaps of polymer electrolyte film: Gamma irradiation

    SciTech Connect (OSTI)

    Raghu, S. Subramanya, K. Sharanappa, C. Mini, V. Archana, K. Sanjeev, Ganesh Devendrappa, H.

    2014-04-24

    The effects of gamma (γ) irradiation on dielectric and optical properties of polymer electrolyte film were investigated. The dielectric constant and ac conductivity increases with γ dose. Also optical band gap decreased from 4.23 to 3.78ev after irradiation. A large dependence of the polymer properties on the irradiation dose was noticed. This suggests that there is a possibility of improving polymer electrolyte properties on gamma irradiation.

  19. Crystal structure of the FLT3 kinase domain bound to the inhibitor quizartinib (AC220)

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zorn, Julie A.; Wang, Qi; Fujimura, Eric; Barros, Tiago; Kuriyan, John; Boggon, Titus J.

    2015-04-02

    More than 30% of acute myeloid leukemia (AML) patients possess activating mutations in the receptor tyrosine kinase FMS-like tyrosine kinase 3 or FLT3. A small-molecule inhibitor of FLT3 (known as quizartinib or AC220) that is currently in clinical trials appears promising for the treatment of AML. Here, we report the co-crystal structure of the kinase domain of FLT3 in complex with quizartinib. FLT3 with quizartinib bound adopts an “Abl-like” inactive conformation with the activation loop stabilized in the “DFG-out” orientation and folded back onto the kinase domain. This conformation is similar to that observed for the uncomplexed intracellular domain ofmore » FLT3 as well as for related receptor tyrosine kinases, except for a localized induced fit in the activation loop. The co-crystal structure reveals the interactions between quizartinib and the active site of FLT3 that are key for achieving its high potency against both wild-type FLT3 as well as a FLT3 variant observed in many AML patients. This co-complex further provides a structural rationale for quizartinib-resistance mutations.« less

  20. Method and apparatus for pulse width modulation control of an AC induction motor

    DOE Patents [OSTI]

    Geppert, Steven; Slicker, James M.

    1984-01-01

    An inverter is connected between a source of DC power and a three-phase AC induction motor, and a micro-processor-based circuit controls the inverter using pulse width modulation techniques. In the disclosed method of pulse width modulation, both edges of each pulse of a carrier pulse train are equally modulated by a time proportional to sin .THETA., where .THETA. is the angular displacement of the pulse center at the motor stator frequency from a fixed reference point on the carrier waveform. The carrier waveform frequency is a multiple of the motor stator frequency. The modulated pulse train is then applied to each of the motor phase inputs with respective phase shifts of 120.degree. at the stator frequency. Switching control commands of electronic switches in the inverter are stored in a random access memory (RAM) and the locations of the RAM are successively read out in a cyclic manner, each bit of a given RAM location controlling a respective phase input of the motor. The DC power source preferably comprises rechargeable batteries and all but one of the electronic switches in the inverter can be disabled, the remaining electronic switch being part of a "flyback" DC-DC converter circuit for recharging the battery.

  1. Crystal structure of the FLT3 kinase domain bound to the inhibitor quizartinib (AC220)

    SciTech Connect (OSTI)

    Zorn, Julie A.; Wang, Qi; Fujimura, Eric; Barros, Tiago; Kuriyan, John; Boggon, Titus J.

    2015-04-02

    More than 30% of acute myeloid leukemia (AML) patients possess activating mutations in the receptor tyrosine kinase FMS-like tyrosine kinase 3 or FLT3. A small-molecule inhibitor of FLT3 (known as quizartinib or AC220) that is currently in clinical trials appears promising for the treatment of AML. Here, we report the co-crystal structure of the kinase domain of FLT3 in complex with quizartinib. FLT3 with quizartinib bound adopts an “Abl-like” inactive conformation with the activation loop stabilized in the “DFG-out” orientation and folded back onto the kinase domain. This conformation is similar to that observed for the uncomplexed intracellular domain of FLT3 as well as for related receptor tyrosine kinases, except for a localized induced fit in the activation loop. The co-crystal structure reveals the interactions between quizartinib and the active site of FLT3 that are key for achieving its high potency against both wild-type FLT3 as well as a FLT3 variant observed in many AML patients. This co-complex further provides a structural rationale for quizartinib-resistance mutations.

  2. Mission Support Contract Section J Contract No. DE-AC06-09RL14728

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    System FAR Federal Acquisition Regulation FCPA Federal Compensation Program Act FFTF Fast Flux Test Facility FIMS Facility Information Management System FNVA Unclassified ...

  3. Inventory of Safety-Related Codes and Standards for Energy Storage Systems and Related Experiences with System Approval and Acceptance

    Energy Savers [EERE]

    PNNL-23618 Inventory of Safety-related Codes and Standards for Energy Storage Systems with some Experiences related to Approval and Acceptance DR Conover September 2014 Prepared for the U.S. Department of Energy Energy Storage Program under Contract DE-AC05-76RL01830 Pacific Northwest National Laboratory Richland, Washington 99352 i ii Summary Purpose The purpose of this document is to identify laws; rules; model codes; and codes, standards, regulations (CSR) specifications related to safety

  4. Low Insertion HVDC Circuit Breaker: Magnetically Pulsed Hybrid Breaker for HVDC Power Distribution Protection

    SciTech Connect (OSTI)

    2012-01-09

    GENI Project: General Atomics is developing a direct current (DC) circuit breaker that could protect the grid from faults 100 times faster than its alternating current (AC) counterparts. Circuit breakers are critical elements in any electrical system. At the grid level, their main function is to isolate parts of the grid where a fault has occurred—such as a downed power line or a transformer explosion—from the rest of the system. DC circuit breakers must interrupt the system during a fault much faster than AC circuit breakers to prevent possible damage to cables, converters and other grid-level components. General Atomics’ high-voltage DC circuit breaker would react in less than 1/1,000th of a second to interrupt current during a fault, preventing potential hazards to people and equipment.

  5. Management control system description

    SciTech Connect (OSTI)

    Bence, P. J.

    1990-10-01

    This Management Control System (MCS) description describes the processes used to manage the cost and schedule of work performed by Westinghouse Hanford Company (Westinghouse Hanford) for the US Department of Energy, Richland Operations Office (DOE-RL), Richland, Washington. Westinghouse Hanford will maintain and use formal cost and schedule management control systems, as presented in this document, in performing work for the DOE-RL. This MCS description is a controlled document and will be modified or updated as required. This document must be approved by the DOE-RL; thereafter, any significant change will require DOE-RL concurrence. Westinghouse Hanford is the DOE-RL operations and engineering contractor at the Hanford Site. Activities associated with this contract (DE-AC06-87RL10930) include operating existing plant facilities, managing defined projects and programs, and planning future enhancements. This document is designed to comply with Section I-13 of the contract by providing a description of Westinghouse Hanford's cost and schedule control systems used in managing the above activities. 5 refs., 22 figs., 1 tab.

  6. THE ACS FORNAX CLUSTER SURVEY. VI. THE NUCLEI OF EARLY-TYPE GALAXIES IN THE FORNAX CLUSTER

    SciTech Connect (OSTI)

    Turner, Monica L.; Cote, Patrick; Ferrarese, Laura; Blakeslee, John P.; Jordan, Andres; Mei, Simona; Peng, Eric W.; West, Michael J.

    2012-11-15

    The Advanced Camera for Surveys (ACS) Fornax Cluster Survey is a Hubble Space Telescope program to image 43 early-type galaxies in the Fornax cluster, using the F475W and F850LP bandpasses of the ACS. We employ both one-dimensional and two-dimensional techniques to characterize the properties of the stellar nuclei in these galaxies, defined as the central 'luminosity excesses', relative to a Sersic model fitted to the underlying host. We find 72% {+-} 13% of our sample (31 galaxies) to be nucleated, with only three of the nuclei offset by more than 0.''5 from their galaxy photocenter, and with the majority of nuclei having colors bluer than their hosts. The nuclei are observed to be larger, and brighter, than typical Fornax globular clusters and to follow different structural scaling relations. A comparison of our results to those from the ACS Virgo Cluster Survey reveals striking similarities in the properties of the nuclei belonging to these different environments. We briefly review a variety of proposed formation models and conclude that, for the low-mass galaxies in our sample, the most important mechanism for nucleus growth is probably infall of star clusters through dynamical friction, while for higher mass galaxies, gas accretion triggered by mergers, accretions, and tidal torques is likely to dominate, with the relative importance of these two processes varying smoothly as a function of galaxy mass. Some intermediate-mass galaxies in our sample show a complexity in their inner structure that may be the signature of the 'hybrid nuclei' that arose through parallel formation channels.

  7. Reliable, Efficient and Cost-Effective Electric Power Converter for Small Wind Turbines Based on AC-link Technology

    SciTech Connect (OSTI)

    Darren Hammell; Mark Holveck; DOE Project Officer - Keith Bennett

    2006-08-01

    Grid-tied inverter power electronics have been an Achilles heel of the small wind industry, providing opportunity for new technologies to provide lower costs, greater efficiency, and improved reliability. The small wind turbine market is also moving towards the 50-100kW size range. The unique AC-link power conversion technology provides efficiency, reliability, and power quality advantages over existing technologies, and Princeton Power will adapt prototype designs used for industrial asynchronous motor control to a 50kW small wind turbine design.

  8. 1. CON'I'AC'r ID CODE PAGE OF PAGES AMENDMENT OF SOLICITATIONIMODIFICATION OF CONTRACT II 11 3

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CON'I'AC'r ID CODE PAGE OF PAGES AMENDMENT OF SOLICITATIONIMODIFICATION OF CONTRACT II 11 3 2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE (M/D.'F) 4. REQUISITION/PURCHASE RE-Q. NO. S. PROJECT1 NO. t7fapplieoble) 27See Block 16C 12EM001839 6. ISUED13Y ODE7. ADMINISTER.ED BY (If uI/wr ius /tem 6) CODE U.S. Department of Energy Office or River Protection P. 0. Box 450, MS 146-60 Richland, WA 99352 1. NAME AND ADDRESS OF CONTRACTOR (No.,stree, county State and Z11' code) 9A, AMENDMEN f

  9. Occupational Health Services Part III Contract No. DE-AC06-04RL14383, Modification 142 Section J

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    III Contract No. DE-AC06-04RL14383, Modification 142 Section J Page J-11 J.3 Health Care Center Description There is a Health Care Center located in the 200 West Area of the Hanford Site, that is staffed by the Occupational Medical Contractor to provide first aid services to workers in the adjacent areas. The 200 West Facility is Government-Furnished. The Health Care Center consists of office space, examination/treatment rooms, storage rooms, etc. as shown on the floor plan in Figure J.3- 1,

  10. Occupational Health Services Part III Contract No. DE-AC06-04RL14383, Modification 152 Section J

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    III Contract No. DE-AC06-04RL14383, Modification 152 Section J Page J-13 J.6 List of Applicable Directives The Directives listed below can be obtained from the following websites: DOE Directives: http://www.directives.doe.gov/ DOE-RL CRD Supplements: http://idmsweb/idmsprod/livelink.exe?func=ll&objId=3423698&objAction=Open&viewType=1 Directive Identifier Title Date of Order or CRD CRD Supplement RRD 002 The Department of Energy Richland Operations Office (RL) Software Quality

  11. Gas sensing properties of magnesium doped SnO{sub 2} thin films in relation to AC conduction

    SciTech Connect (OSTI)

    Deepa, S.; Skariah, Benoy Thomas, Boben; Joseph, Anisha

    2014-01-28

    Conducting magnesium doped (0 to 1.5 wt %) tin oxide thin films prepared by Spray Pyrolysis technique achieved detection of 1000 ppm of LPG. The films deposited at 304 C exhibit an enhanced response at an operating temperature of 350 C. The microstructural properties are studied by means of X-ray diffraction. AC conductivity measurements are carried out using precision LCR meter to analyze the parameters that affect the variation in sensing. The results are correlated with compositional parameters and the subsequent modification in the charge transport mechanism facilitating an enhanced LPG sensing action.

  12. NO. OF DOCUMENT BEING CONTINUED ~AE O CONTINUATION SHEET DE-AC27-08RV14800/061

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    REFERENCE NO. OF DOCUMENT BEING CONTINUED ~AE O CONTINUATION SHEET DE-AC27-08RV14800/061 12 4 NAME OF OFFEROR OR CONTRACTOR WASHINGTON RIVER PROTECTION SOLUTIONS LLC ITEM NO. SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT (A) (B) (C) (D) (E) (F) LIST OF CHANGES: Obligated Amount for this Modification: $ 1,7 86, 0 99.16 New Total Obligated Amount for this Award: $1, 126, 648,414.21 Incremental Funded Amount changed: from $1, 124,762,315.05 to $1, 126, 648,414.21 Account code: P&B Rocky

  13. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76-CHO-3073

    Office of Scientific and Technical Information (OSTI)

    PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76-CHO-3073 PPPL-2818 PPPL-2818 UC-422,427 THREE-DIMENSIONAL TOKAMAKEQUILIBRIA * INTHE PRESENCEOF RESONANTFIELDERRORS BY A. REIMANAND D. MONTICELLO January 1992 IDIRII_I['TO_I I_L.ABMA I_lYSmcl L.ABORATC)RY i NOTICE v, This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Govern,nent nor any agency thereof, nor any of their employees, makes any warranty,

  14. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76-CHO-3073

    Office of Scientific and Technical Information (OSTI)

    UNDER CONTRACT DE-AC02-76-CHO-3073 PPPL-3099 PPPL-3099 UC-427 & SINGULAR SURFACES IN THE OPEN FIELD LINE REGION OF A DIVERTED TOKAMAK BY A. REIMAN MAY 1995 PRINCETON PLASMA PHYSICS LABORATORY - - NOTICE J This report was prepared unt of work sponsored by an agency of the United States Government. Nei States Government nor any agency thereof, nor any of their mploye y, express or implied, or assumes any legal liability or responsibi , completeness, or usefulness of any information,

  15. Mission Support Contract Section B Contract No. DE-AC06-09RL14728 Modification 482483

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mission Support Contract Section B Contract No. DE-AC06-09RL14728 Modification 482483 B-1 Section B, Clause B.3, Obligation and Availability of Funds, is modified as follows: from: (a) Obligation of Funds. Pursuant to the Section I Clause entitled, FAR 52.232-22, Limitation of Funds, total funds in the amount of $1,825,349,363.00 have been allotted for obligation and are available for payment of services provided from the effective date of this Contract through May 25, 2017. to: (a) Obligation

  16. Plateau Remediation Contract Section J Contract No. DE-AC06-08RL14788 Attachment J.11, Revision 0

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CONTRACT LINE ITEM NUMBER (CLIN) ASSIGNMENT AGAINST CONTRACT STRUCTURE The table entitled, CONTRACT LINE ITEM NUMBER (CLIN) ASSIGNMENT AGAINST CONTRACT STRUCTURE, is included as a separate file. Plateau Remediation Contract Contract No. DE-AC06-08RL14788 ATTACHMENT J-11 CONTRACT LINE ITEM NUMBER (CLIN) ASSIGNMENT AGAINST CONTRACT STRUCTURE Section J Attachment J-11, Revision 2 PRC STATEMENT OF WORK SECTION ASSIGNED WBS ELEMENTS CLIN C.2.1 Transition 013.01 Project Management - PBS RL-13 1 C.2.1

  17. Attachment to Modification M067 BWXT Pantex, LLC Contract No. DE-AC04-00AL66620

    National Nuclear Security Administration (NNSA)

    M067 BWXT Pantex, LLC Contract No. DE-AC04-00AL66620 PX-SEC-J (6-24-04).doc J-App. E-1 PART III - LIST OF DOCUMENTS, EXHIBITS, AND OTHER ATTACHMENTS SECTION J - LIST OF ATTACHMENTS APPENDIX E - LIST OF APPLICABLE DIRECTIVES June 24, 2004 Pursuant to the contract clause entitled "Laws, Regulations, and DOE Directives," the following list of Directives is applicable to this contract. Environmental, Safety, and Health (ES&H) requirements for work conducted under this contract have

  18. Attachment to Modification M125 BWXT Pantex, LLC Contract No. DE-AC04-00AL66620

    National Nuclear Security Administration (NNSA)

    M125 BWXT Pantex, LLC Contract No. DE-AC04-00AL66620 PX-SEC-J (01/16/07) J-App. E-1 PART III - LIST OF DOCUMENTS, EXHIBITS, AND OTHER ATTACHMENTS SECTION J - LIST OF ATTACHMENTS APPENDIX E - LIST OF APPLICABLE DIRECTIVES January 16, 2007 Pursuant to the contract clause entitled "Laws, Regulations, and DOE Directives," the following list of directives is applicable to this contract. Environmental, Safety, and Health (ES&H) requirements for work conducted under this contract have

  19. Modification No. M081 BWXT Pantex, LLC Contract No. DE-AC04-00AL66620

    National Nuclear Security Administration (NNSA)

    1 BWXT Pantex, LLC Contract No. DE-AC04-00AL66620 Page 2 of 4 1. This modification deletes Appendix D entitled, "Key Personnel," dated August 23, 2004, that is currently in Section J of the Contract and replaces it with Attachment 1, Appendix D entitled, "Key Personnel," dated December 23, 2004, of this Modification. 2. This modification deletes Contract Clause I 63. entitled, "DEAR 952.204-2 Security (SEP 1997)(Modified)," and replaces it with Contract Clause I 63.

  20. Vulnerability Analysis of Energy Delivery Control Systems

    Energy Savers [EERE]

    0-18381 Vulnerability Analysis of Energy Delivery Control Systems September 2011 Idaho National Laboratory Idaho Falls, Idaho 83415 http://www.inl.gov Prepared for the U.S. Department of Energy Office of Electricity Delivery and Energy Reliability Under DOE Idaho Operations Office Contract DE-AC07-05ID14517 The INL is a U.S. Department of Energy National Laboratory operated by Battelle Energy Alliance DISCLAIMER This information was prepared as an account of work sponsored by an agency of the

  1. Alternate Water Supply System, Riverton, WY, Site

    Office of Legacy Management (LM)

    Alternate Water Supply System Flushing Report Riverton, Wyoming, Processing Site January 2008 Office of Legacy Management DOE M/1570 2008 - -L Work Performed Under DOE Contract No. for the U.S. Department of Energy Office of Legacy Management. DE-AC01-02GJ79491 Approved for public release; distribution is unlimited. Office of Legacy Management Office of Legacy Management Office of Legacy Management U.S. Department of Energy This page intentionally left blank DOE-LM/1570-2008 Alternate Water

  2. High Level Waste Management Division High. Level Waste System Plan

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    HLW -OVP-98-0037 High Level Waste Management Division High. Level Waste System Plan Revision 9 (U) April 1998 Westinghouse Savannah River Company Savannah River Site Aiken, SC 29808 Prepared for the U. S. Department of Energy under contract no. DE-AC09-96SR18500 HLW -OVP-98-0037 High Level Waste Management Division High Level Waste System Plan Revision 9 (U) Contributors: A. S. Choi P. Paul F. E. Wise Prepared by: ?1M.J II£) ~ N. R. Davis Approved by: HLW System Integration Manager ll\1-'-ft

  3. Developing 226Ra and 227Ac age-dating techniques for nuclear forensics to gain insight from concordant and non-concordant radiochronometers

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kayzar, Theresa M.; Williams, Ross W.

    2015-09-26

    The model age or ‘date of purification’ of a nuclear material is an important nuclear forensic signature. In this study, chemical separation and MC-ICP-MS measurement techniques were developed for 226 Ra and 227Ac: grand-daughter nuclides in the 238U and 235U decay chains respectively. The 230Th-234U, 226Ra-238U, 231Pa-235U, and 227Ac-235U radiochronometers were used to calculate model ages for CRM-U100 standard reference material and two highly-enriched pieces of uranium metal from the International Technical Working Group Round Robin 3 Exercise. In conclusion, the results demonstrate the accuracy of the 226Ra-238U and 227Ac-235U chronometers and provide information about nuclide migration during uranium processing.

  4. HIGH TEMPERATURE SYSTEMS

    DOE Patents [OSTI]

    Thomson, G.P.; Blackman, M.

    1961-07-25

    BS>A device is descrined for producing nuclear fusion reactions by additional acceleration of a hydrogen isotope plasma formed and initially accelerated by a collapsing magnetic field. The plasma is enclosed in a toroidal cavity within a vessel composed of a plurality of insulated coaxial segments. The added acceleration is caused by providing progressing potentials to the insulated segments acting as electrodes by means of a segmented delay transmission line coupled to the electrode segments and excited by a two phase alternating current supply.

  5. Estimating the system price of redox flow batteries for grid storage

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Estimating the system price of redox flow batteries for grid storage Citation Details In-Document Search Title: Estimating the system price of redox flow batteries for grid storage Authors: Ha, Seungbum ; Gallagher, Kevin G. Publication Date: 2015-11-20 OSTI Identifier: 1237490 DOE Contract Number: AC02-06CH11357 Resource Type: Journal Article Resource Relation: Journal Name: Journal of Power Sources; Journal Volume: 296 Publisher: Elsevier Research Org:

  6. Exact transition probabilities in a 6-state Landau-Zener system with path

    Office of Scientific and Technical Information (OSTI)

    interference (Journal Article) | SciTech Connect in a 6-state Landau-Zener system with path interference Citation Details In-Document Search Title: Exact transition probabilities in a 6-state Landau-Zener system with path interference Authors: Sinitsyn, N. A. Publication Date: 2015-04-23 OSTI Identifier: 1239016 Grant/Contract Number: AC52-06NA25396 Type: Publisher's Accepted Manuscript Journal Name: Journal of Physics A: Mathematical and Theoretical Additional Journal Information: Journal

  7. 1800 Engineered Safety Work Planning and Controls and HF Delivery System.

    Office of Scientific and Technical Information (OSTI)

    (Conference) | SciTech Connect Conference: 1800 Engineered Safety Work Planning and Controls and HF Delivery System. Citation Details In-Document Search Title: 1800 Engineered Safety Work Planning and Controls and HF Delivery System. Abstract not provided. Authors: Finnegan, Patrick Sean ; McElhanon, James R. Publication Date: 2014-11-01 OSTI Identifier: 1242707 Report Number(s): SAND2014-20029C 547378 DOE Contract Number: AC04-94AL85000 Resource Type: Conference Resource Relation:

  8. System and method for single-phase, single-stage grid-interactive inverter

    DOE Patents [OSTI]

    Liu, Liming; Li, Hui

    2015-09-01

    The present invention provides for the integration of distributed renewable energy sources/storages utilizing a cascaded DC-AC inverter, thereby eliminating the need for a DC-DC converter. The ability to segment the energy sources and energy storages improves the maintenance capability and system reliability of the distributed generation system, as well as achieve wide range reactive power compensation. In the absence of a DC-DC converter, single stage energy conversion can be achieved to enhance energy conversion efficiency.

  9. Voltage Quench Dynamics of a Kondo System (Journal Article) | DOE PAGES

    Office of Scientific and Technical Information (OSTI)

    Voltage Quench Dynamics of a Kondo System This content will become publicly available on January 18, 2017 « Prev Next » Title: Voltage Quench Dynamics of a Kondo System Authors: Antipov, Andrey E. ; Dong, Qiaoyuan ; Gull, Emanuel Publication Date: 2016-01-19 OSTI Identifier: 1235600 Grant/Contract Number: AC02-05CH11231 Type: Publisher's Accepted Manuscript Journal Name: Physical Review Letters Additional Journal Information: Journal Volume: 116; Journal Issue: 3; Journal ID: ISSN 0031-9007

  10. Method to produce acetyldiacylglycerols (ac-TAGs) by expression of an acetyltransferase gene isolated from Euonymus alatus (burning bush)

    DOE Patents [OSTI]

    Durrett, Timothy; Ohlrogge, John; Pollard, Michael

    2016-05-03

    The present invention relates to novel diacylglycerol acyltransferase genes and proteins, and methods of their use. In particular, the invention describes genes encoding proteins having diacylglycerol acetyltransferase activity, specifically for transferring an acetyl group to a diacylglycerol substrate to form acetyl-Triacylglycerols (ac-TAGS), for example, a 3-acetyl-1,2-diacyl-sn-glycerol. The present invention encompasses both native and recombinant wild-type forms of the transferase, as well as mutants and variant forms. The present invention also relates to methods of using novel diacylglycerol acyltransferase genes and proteins, including their expression in transgenic organisms at commercially viable levels, for increasing production of 3-acetyl-1,2-diacyl-sn-glycerols in plant oils and altering the composition of oils produced by microorganisms, such as yeast, by increasing ac-TAG production. Additionally, oils produced by methods of the present inventions comprising genes and proteins are contemplated for use as biodiesel fuel, in polymer production and as naturally produced food oils with reduced calories.

  11. Management and Operating Contract for the Los Alamos National Laboratory, NNSA contract No. DE-AC52-06NA25396

    National Nuclear Security Administration (NNSA)

    MANAGEMENT AND OPERATING CONTRACT FOR THE LOS ALAMOS NATIONAL LABORATORY NATIONAL NUCLEAR SECURITY ADMINISTRATION CONTRACT No. DE-AC52-06NA25396 DECEMBER 21, 2005 1943 Today Blank Page Blank Page Request for Proposal No. DE-RP52-05NA25396 LANS Contract DE-AC52-06NA25396.doc Section B - H, Page 2 Part I - The Schedule Sections B through H TABLE OF CONTENTS STANDARD FORM 33 SOLICITATION, OFFER AND AWARD....................................... 1 Section B - SUPPLIES OR SERVICES AND PRICES/COSTS

  12. Method and system for reducing errors in vehicle weighing systems

    DOE Patents [OSTI]

    Hively, Lee M.; Abercrombie, Robert K.

    2010-08-24

    A method and system (10, 23) for determining vehicle weight to a precision of <0.1%, uses a plurality of weight sensing elements (23), a computer (10) for reading in weighing data for a vehicle (25) and produces a dataset representing the total weight of a vehicle via programming (40-53) that is executable by the computer (10) for (a) providing a plurality of mode parameters that characterize each oscillatory mode in the data due to movement of the vehicle during weighing, (b) by determining the oscillatory mode at which there is a minimum error in the weighing data; (c) processing the weighing data to remove that dynamical oscillation from the weighing data; and (d) repeating steps (a)-(c) until the error in the set of weighing data is <0.1% in the vehicle weight.

  13. Termination for superconducting power transmission systems

    DOE Patents [OSTI]

    Forsyth, E.B.; Jensen, J.E.

    1975-08-26

    This patent relates to a cold, electrical gradient, terminal section for a superconducting cable for alternating current power transmission. A cold electrical gradient section filled with a gaseous coolant acting as an insulator is provided in series with a separate thermal gradient section. (auth)

  14. Power conditioning system for energy sources

    DOE Patents [OSTI]

    Mazumder, Sudip K.; Burra, Rajni K.; Acharya, Kaustuva

    2008-05-13

    Apparatus for conditioning power generated by an energy source includes an inverter for converting a DC input voltage from the energy source to a square wave AC output voltage, and a converter for converting the AC output voltage from the inverter to a sine wave AC output voltage.

  15. DE-AC27/-1 ORV15051 Modification M007

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Tracking System): No longer required. ii. Reserved iii. HILLS (Hanford Information Lessons Learned Sharing): This Web site contains Hanford related operating experience...

  16. Data:Caa5cce6-c6c8-4b7a-ac01-eb6abdf87c9b | Open Energy Information

    Open Energy Info (EERE)

    Caa5cce6-c6c8-4b7a-ac01-eb6abdf87c9b No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading......

  17. Data:Eaa8368d-11ca-47bd-bb83-2fd1546e2ac0 | Open Energy Information

    Open Energy Info (EERE)

    Eaa8368d-11ca-47bd-bb83-2fd1546e2ac0 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading......

  18. Measuring Advances in HVAC Distribution System Design

    SciTech Connect (OSTI)

    Franconi, E.

    1998-05-01

    Substantial commercial building energy savings have been achieved by improving the performance of the HV AC distribution system. The energy savings result from distribution system design improvements, advanced control capabilities, and use of variable-speed motors. Yet, much of the commercial building stock remains equipped with inefficient systems. Contributing to this is the absence of a definition for distribution system efficiency as well as the analysis methods for quantifying performance. This research investigates the application of performance indices to assess design advancements in commercial building thermal distribution systems. The index definitions are based on a first and second law of thermodynamics analysis of the system. The second law or availability analysis enables the determination of the true efficiency of the system. Availability analysis is a convenient way to make system efficiency comparisons since performance is evaluated relative to an ideal process. A TRNSYS simulation model is developed to analyze the performance of two distribution system types, a constant air volume system and a variable air volume system, that serve one floor of a large office building. Performance indices are calculated using the simulation results to compare the performance of the two systems types in several locations. Changes in index values are compared to changes in plant energy, costs, and carbon emissions to explore the ability of the indices to estimate these quantities.

  19. Energy Return On Investment of Engineered Geothermal Systems Data

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Mansure, Chip

    EROI is a ratio of the energy delivered to the consumer to the energy consumed to build, operate, and decommission the facility. EROI is important in assessing the viability of energy alternatives. Currently EROI analyses of geothermal energy are either out-of-date, of uncertain methodology, or presented online with little supporting documentation. This data set is a collection of files documenting data used to calculate the Energy Return On Investment (EROI) of Engineered Geothermal Systems (EGS) and erratum to publications prior to the final report. Final report is available from the OSTI web site (http://www.osti.gov/geothermal/). Data in this collections includes the well designs used, input parameters for GETEM, a discussion of the energy needed to haul materials to the drill site, the baseline mud program, and a summary of the energy needed to drill each of the well designs. EROI is the ratio of the energy delivered to the customer to the energy consumed to construct, operate, and decommission the facility. Whereas efficiency is the ratio of the energy delivered to the customer to the energy extracted from the reservoir.

  20. Energy Return On Investment of Engineered Geothermal Systems Data

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Mansure, Chip

    2012-01-01

    EROI is a ratio of the energy delivered to the consumer to the energy consumed to build, operate, and decommission the facility. EROI is important in assessing the viability of energy alternatives. Currently EROI analyses of geothermal energy are either out-of-date, of uncertain methodology, or presented online with little supporting documentation. This data set is a collection of files documenting data used to calculate the Energy Return On Investment (EROI) of Engineered Geothermal Systems (EGS) and erratum to publications prior to the final report. Final report is available from the OSTI web site (http://www.osti.gov/geothermal/). Data in this collections includes the well designs used, input parameters for GETEM, a discussion of the energy needed to haul materials to the drill site, the baseline mud program, and a summary of the energy needed to drill each of the well designs. EROI is the ratio of the energy delivered to the customer to the energy consumed to construct, operate, and decommission the facility. Whereas efficiency is the ratio of the energy delivered to the customer to the energy extracted from the reservoir.

  1. Hybrid Cooling Systems for Low-Temperature Geothermal Power Production

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Hybrid Cooling Systems for Low-Temperature Geothermal Power Production Andrea Ashwood and Desikan Bharathan Technical Report NREL/TP-5500-48765 March 2011 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Hybrid Cooling Systems for

  2. Visible Reflectivity System for High-Pressure Studies. (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect SciTech Connect Search Results Journal Article: Visible Reflectivity System for High-Pressure Studies. Citation Details In-Document Search Title: Visible Reflectivity System for High-Pressure Studies. Authors: Seagle, Christopher T ; Dolan, III, Daniel H Publication Date: 2013-04-01 OSTI Identifier: 1073453 Report Number(s): SAND2013-2893J Journal ID: ISSN 0034-6748 DOE Contract Number: AC04-94AL85000 Resource Type: Journal Article Resource Relation: Journal Name: Review of

  3. Harmonic and interharmonic distortion modeling in multiconverter systems

    SciTech Connect (OSTI)

    Carbone, R.; Morrison, R.E.; Testa, A.; Menniti, D.

    1995-07-01

    The problem of modeling multiconverter systems in presence of harmonic and interharmonic distortion is considered. Specifically, current source rectifiers are considered as distortion sources some supply d.c. motors and the remaining supplying inverters feeding a.c. machines. The classical analogue, frequency domain and time domain models proposed in the literature to study harmonic distortion in a multiconverter system are considered and for each model suitable extension to include the interharmonic distortion are presented and critically analyzed. The results of several experiments are reported to show the usefulness and to compare the accuracy of the different extensions considered.

  4. Thorium based power systems and relevant safeguards considerations

    Office of Scientific and Technical Information (OSTI)

    (Conference) | SciTech Connect Conference: Thorium based power systems and relevant safeguards considerations Citation Details In-Document Search Title: Thorium based power systems and relevant safeguards considerations Authors: Fane, Brian M [1] ; Murphy, Chantell L [1] ; Boyer, Brian D [1] + Show Author Affiliations Los Alamos National Laboratory Publication Date: 2011-06-10 OSTI Identifier: 1072334 Report Number(s): LA-UR-11-03368; LA-UR-11-3368 DOE Contract Number: AC52-06NA25396

  5. The IAEA and the International Safeguards System (Technical Report) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect The IAEA and the International Safeguards System Citation Details In-Document Search Title: The IAEA and the International Safeguards System Authors: Boyer, Brian D. [1] + Show Author Affiliations Los Alamos National Laboratory Publication Date: 2013-05-08 OSTI Identifier: 1079563 Report Number(s): LA-UR-13-23355 DOE Contract Number: AC52-06NA25396 Resource Type: Technical Report Research Org: Los Alamos National Laboratory (LANL) Sponsoring Org: DOE/LANL Country of

  6. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76-CHO-3073

    Office of Scientific and Technical Information (OSTI)

    r/0*O> PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76-CHO-3073 PPPL-2760 UC-421,427 PPPL-2760 TOKAMAK ERROR FIELDS AND LOCKED MODES BY A. REIMAN AND D. MONTICELLO May 1991 P B I N C I T O N | P L A S M A P H Y S I C S I L A I O R A T Q R V I 1 sr-JiL-tK'- PRINCETON UNIVERSITY, PRINCETON, NEW JERSEY * U I 1 \^{~ r l * l A - ' i - U M L N l JS (JIVLilViif^O NOTICE This report was prepared as an account of work sponsored by an agency of the United States Government.

  7. BWXT/B&W Pantex Contract No. DE-AC04-00AL66620 FY BUDGET

    National Nuclear Security Administration (NNSA)

    BWXT/B&W Pantex Contract No. DE-AC04-00AL66620 FY BUDGET (LAB TABLE) ESTIMATED COST AWARD FEE AVAILABLE WFO FEE AVAILABLE (Estimated) AVAILABLE FEE FROM OTHER REIMBURSABLE WORK (Estimated) AWARD FEE EARNED WFO FEE EARNED EARNED FEE FROM OTHER REIMBURSABLE WORK 2011 533,140,000 498,262,000 34,878,000 276,000 127,000 2010 575,020,000 537,402,000 37,618,000 278,000 120,000 35,930,423 270,406 125,005 2009 511,744,000 478,265,421 33,478,579 224,634 91,932 31,815,053 207,296 192,086 2008

  8. Contract No. DE-AC04-94AL85000 Modification M0541

    National Nuclear Security Administration (NNSA)

    Sandia is organized within LMC's Space Systems business area. C. Sandia and LMC are committed to the public interest, in the amount of a minimum of 2 million per year, through the ...

  9. Final report on the development of a 250-kW modular, factory-assembled battery energy storage system

    SciTech Connect (OSTI)

    Porter, D.; Nerbun, W.; Corey, G.

    1998-08-01

    A power management energy storage system was developed for stationary applications such as peak shaving, voltage regulation, and spinning reserve. Project activities included design, manufacture, factory testing, and field installation. The major features that characterize the development are the modularity of the production, its transportability, the power conversion method that aggregates power on the AC side of the converter, and the use of commonly employed technology for system components. 21 figs.

  10. Characterization of Pipes, Drain Lines, and Ducts using the Pipe Explorer System

    Office of Scientific and Technical Information (OSTI)

    2-97/C0803 Title: Characterization of Pipes, Drain Lines, and Ducts Using the Pipe Explorer System TM Authors: C.D. Cremer D.T. Kendrick E. Cramer Contractor: Science and Engineering Associates, Inc. 6100 Uptown Blvd, NE Albuquerque, NM 87100 Contract Number: DE-AC21-93MC30172 Conference: Industry Partnerships to Deploy Environmental Technology Conference Location: Morgantown, West Virginia Conference Dates: October 22-24, 1996 Conference Sponsor: Morgantown Energy Technology Center Disclaimer

  11. Modeling Photovoltaic Module-Level Power Electronics in the System Advisor Model; NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    2015-07-01

    Module-level power electronics, such as DC power optimizers, microinverters, and those found in AC modules, are increasing in popularity in smaller-scale photovoltaic (PV) systems as their prices continue to decline. Therefore, it is important to provide PV modelers with guidelines about how to model these distributed power electronics appropriately in PV modeling software. This paper extends the work completed at NREL that provided recommendations to model the performance of distributed power electronics in NREL’s popular PVWatts calculator [1], to provide similar guidelines for modeling these technologies in NREL's more complex System Advisor Model (SAM). Module-level power electronics - such as DC power optimizers, microinverters, and those found in AC modules-- are increasing in popularity in smaller-scale photovoltaic (PV) systems as their prices continue to decline. Therefore, it is important to provide PV modelers with guidelines about how to model these distributed power electronics appropriately in PV modeling software.

  12. THE HST/ACS COMA CLUSTER SURVEY. VIII. BARRED DISK GALAXIES IN THE CORE OF THE COMA CLUSTER

    SciTech Connect (OSTI)

    Marinova, Irina; Jogee, Shardha; Weinzirl, Tim; Erwin, Peter; Trentham, Neil; Ferguson, Henry C.; Goudfrooij, Paul; Hammer, Derek; Den Brok, Mark; Peletier, Reynier F.; Kleijn, Gijs V.; Graham, Alister W.; Carter, David; Mouhcine, Mustapha; Balcells, Marc; Guzman, Rafael; Hoyos, Carlos; Mobasher, Bahram; Peng, Eric W. E-mail: sj@astro.as.utexas.edu

    2012-02-20

    We use high-resolution ({approx}0.''1) F814W Advanced Camera for Surveys (ACS) images from the Hubble Space Telescope ACS Treasury survey of the Coma cluster at z {approx} 0.02 to study bars in massive disk galaxies (S0s), as well as low-mass dwarf galaxies in the core of the Coma cluster, the densest environment in the nearby universe. Our study helps to constrain the evolution of bars and disks in dense environments and provides a comparison point for studies in lower density environments and at higher redshifts. Our results are: (1) we characterize the fraction and properties of bars in a sample of 32 bright (M{sub V} {approx}< -18, M{sub *} > 10{sup 9.5} M{sub Sun }) S0 galaxies, which dominate the population of massive disk galaxies in the Coma core. We find that the measurement of a bar fraction among S0 galaxies must be handled with special care due to the difficulty in separating unbarred S0s from ellipticals, and the potential dilution of the bar signature by light from a relatively large, bright bulge. The results depend sensitively on the method used: the bar fraction for bright S0s in the Coma core is 50% {+-} 11%, 65% {+-} 11%, and 60% {+-} 11% based on three methods of bar detection, namely, strict ellipse fit criteria, relaxed ellipse fit criteria, and visual classification. (2) We compare the S0 bar fraction across different environments (the Coma core, A901/902, and Virgo) adopting the critical step of using matched samples and matched methods in order to ensure robust comparisons. We find that the bar fraction among bright S0 galaxies does not show a statistically significant variation (within the error bars of {+-}11%) across environments which span two orders of magnitude in galaxy number density (n {approx} 300-10,000 galaxies Mpc{sup -3}) and include rich and poor clusters, such as the core of Coma, the A901/902 cluster, and Virgo. We speculate that the bar fraction among S0s is not significantly enhanced in rich clusters compared to low-density environments for two reasons. First, S0s in rich clusters are less prone to bar instabilities as they are dynamically heated by harassment and are gas poor as a result of ram pressure stripping and accelerated star formation. Second, high-speed encounters in rich clusters may be less effective than slow, strong encounters in inducing bars. (3) We also take advantage of the high resolution of the ACS ({approx}50 pc) to analyze a sample of 333 faint (M{sub V} > -18) dwarf galaxies in the Coma core. Using visual inspection of unsharp-masked images, we find only 13 galaxies with bar and/or spiral structure. An additional eight galaxies show evidence for an inclined disk. The paucity of disk structures in Coma dwarfs suggests that either disks are not common in these galaxies or that any disks present are too hot to develop instabilities.

  13. Mission Support Contract Section J Contract No. DE-AC06-09RL14728

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    J-1-1 ATTACHMENT J-1 ABBREVIATIONS AND ACRONYM LIST % percent ACO Administrative Contracting Officer ACREM Accountable classified removable electronic media AEA Atomic Energy Act of 1954 AMP Area Management Plan ANSI American National Standards Institute APGEMS Air Pollutant Graphical Environmental Modeling System AR Administrative Record BCSO Benton County Sheriff's Office BPA Bonneville Power Administration BPUD Benton Public Utilities District BREA Benton Rural Electric Association CAIS

  14. A statistical approach to designing mitigation for induced AC voltages on pipelines

    SciTech Connect (OSTI)

    Dabkowski, J. [Electro Sciences Inc., Crystal Lake, IL (United States)

    1996-08-01

    Induced voltage levels on buried pipelines co-located with overhead electric power transmission lines are usually mitigated by grounding the pipeline. Maximum effectiveness is obtained when grounds are placed where the peak induced voltages occur. Mitigation depends on the local soil resistivity. It may be necessary to employ an extensive distributed grounding system. Over long distances, however, the soil resistivity generally varies as a log-normally distributed random variable. The effect of this variability is examined.

  15. Ignition assist systems for direct-injected, diesel cycle, medium-duty alternative fuel engines: Final report phase 1

    SciTech Connect (OSTI)

    Chan, A.K.

    2000-02-23

    This report is a summary of the results of Phase 1 of this contract. The objective was to evaluate the potential of assist technologies for direct-injected alternative fuel engines vs. glow plug ignition assist. The goal was to demonstrate the feasibility of an ignition system life of 10,000 hours and a system cost of less than 50% of the glow plug system, while meeting or exceeding the engine thermal efficiency obtained with the glow plug system. There were three tasks in Phase 1. Under Task 1, a comprehensive review of feasible ignition options for DING engines was completed. The most promising options are: (1) AC and the ''SmartFire'' spark, which are both long-duration, low-power (LDLP) spark systems; (2) the short-duration, high-power (SDHP) spark system; (3) the micropilot injection ignition; and (4) the stratified charge plasma ignition. Efforts concentrated on investigating the AC spark, SmartFire spark, and short-duration/high-power spark systems. Using proprietary pricing information, the authors predicted that the commercial costs for the AC spark, the short-duration/high-power spark and SmartFire spark systems will be comparable (if not less) to the glow plug system. Task 2 involved designing and performing bench tests to determine the criteria for the ignition system and the prototype spark plug for Task 3. The two most important design criteria are the high voltage output requirement of the ignition system and the minimum electrical insulation requirement for the spark plug. Under Task 3, all the necessary hardware for the one-cylinder engine test was designed. The hardware includes modified 3126 cylinder heads, specially designed prototype spark plugs, ignition system electronics, and parts for the system installation. Two 3126 cylinder heads and the SmartFire ignition system were procured, and testing will begin in Phase 2 of this subcontract.

  16. Power-cable-carrier control (PC/sup 3/) system

    SciTech Connect (OSTI)

    Alvis, R.L.; Wally, K.; Rosborough, J.R.

    1981-04-01

    A control system has been developed that uses a carrier signal imposed on an existing ac power circuit to transmit commands. This system was specifically developed to control an entire solar collector field by sending sun-tracking information to the trough collectors or by commanding them to assume safe positions (STOW) if out-of-limit conditions were encountered. Objectives were to develop a control system that operates reliably and has enough functions to control an entire collector field, yet do it at less cost than for conventional approaches. Development, design, operating characteristics, and field testing and results of the new system, the Power Cable Carrier Control (PC/sup 3/) System are described.

  17. Progress in photovoltaic system and component improvements

    SciTech Connect (OSTI)

    Thomas, H.P.; Kroposki, B.; McNutt, P.; Witt, C.E.; Bower, W.; Bonn, R.; Hund, T.D.

    1998-07-01

    The Photovoltaic Manufacturing Technology (PVMaT) project is a partnership between the US government (through the US Department of Energy [DOE]) and the PV industry. Part of its purpose is to conduct manufacturing technology research and development to address the issues and opportunities identified by industry to advance photovoltaic (PV) systems and components. The project was initiated in 1990 and has been conducted in several phases to support the evolution of PV industrial manufacturing technology. Early phases of the project stressed PV module manufacturing. Starting with Phase 4A and continuing in Phase 5A, the goals were broadened to include improvement of component efficiency, energy storage and manufacturing and system or component integration to bring together all elements for a PV product. This paper summarizes PV manufacturers` accomplishments in components, system integration, and alternative manufacturing methods. Their approaches have resulted in improved hardware and PV system performance, better system compatibility, and new system capabilities. Results include new products such as Underwriters Laboratories (UL)-listed AC PV modules, modular inverters, and advanced inverter designs that use readily available and standard components. Work planned in Phase 5A1 includes integrated residential and commercial roof-top systems, PV systems with energy storage, and 300-Wac to 4-kWac inverters.

  18. Regulatory/backfit analysis for the resolution of Unresolved Safety Issue A-44, Station Blackout

    SciTech Connect (OSTI)

    Rubin, A.M.

    1988-06-01

    Station blackout is the complete loss of alternating current (ac) electric power to the essential and nonessential buses in a nuclear power plant; it results when both offsite power and the onsite emergency ac power systems are unavailable. Because many safety systems required for reactor core decay heat removal and containment heat removal depend on ac power, the consequences of a station blackout could be severe. Because of the concern about the frequency of loss of offsite power, the number of failures of emergency diesel generators, and the potentially severe consequences of a loss of all ac power, ''Station Blackout'' was designated as Unresolved Safety Issue (USI) A-44. This report presents the regulatory/backfit analysis for USI A-44. It includes (1) a summary of the issue, (2) the recommended technical resolution, (3) alternative resolutions considered by the Nuclear Regulatory Commission (NRC) staff, (4) an assessment of the benefits and costs of the recommended resolution, (5) the decision rationale, (6) the relationship between USI A-44 and other NRC programs and requirements, and (7) a backfit analysis demonstrating that the resolution of USI A-44 complies with the backfit rule (10 CFR 50.109).

  19. Regulatory analysis for the resolution of Unresolved Safety Issue A-44, Station Blackout. Draft report

    SciTech Connect (OSTI)

    Rubin, A.M.

    1986-01-01

    ''Station Blackout'' is the complete loss of alternating current (ac) electric power to the essential and nonessential buses in a nuclear power plant; it results when both offsite power and the onsite emergency ac power systems are unavailable. Because many safety systems required for reactor core decay heat removal and containment heat removal depend on ac power, the consequences of a station blackout could be severe. Because of the concern about the frequency of loss of offsite power, the number of failures of emergency diesel generators, and the potentially severe consequences of a loss of all ac power, ''Station Blackout'' was designated as Unresolved Safety Issue (USI) A-44. This report presents the regulatory analysis for USI A-44. It includes: (1) a summary of the issue, (2) the proposed technical resolution, (3) alternative resolutions considered by the Nuclear Regulatory Commission (NRC) staff, (4) an assessment of the benefits and costs of the recommended resolution, (5) the decision rationale, and (6) the relationship between USI A-44 and other NRC programs and requirements.

  20. Graded pitch electromagnetic pump for thin strip metal casting systems

    DOE Patents [OSTI]

    Kuznetsov, S.B.

    1986-04-01

    A metal strip casing system is provided with an electromagnetic pump which includes a pair of primary blocks having a graded pole pitch, polyphase ac winding and being arranged on opposite sides of a movable heat sink. A nozzle is provided for depositing liquid metal on the heat sink such that the resulting metal strip and heat sink combination is subjected to a longitudinal electromagnetic field which increases in wavelength in the direction of travel of the heat sink, thereby subjecting the metal and heat sink to a longitudinal force having a magnitude which increases in the direction of travel. 4 figs.

  1. Graded pitch electromagnetic pump for thin strip metal casting systems

    DOE Patents [OSTI]

    Kuznetsov, Stephen B.

    1986-01-01

    A metal strip casing system is provided with an electromagnetic pump which includes a pair of primary blocks having a graded pole pitch, polyphase ac winding and being arranged on opposite sides of a movable heat sink. A nozzle is provided for depositing liquid metal on the heat sink such that the resulting metal strip and heat sink combination is subjected to a longitudinal electromagnetic field which increases in wavelength in the direction of travel of the heat sink, thereby subjecting the metal and heat sink to a longitudinal force having a magnitude which increases in the direction of travel.

  2. Permanent Mold Casting of JIS-AC4C Aluminum Alloy Using a Low-Temperature Mold

    SciTech Connect (OSTI)

    Yamagata, Hiroshi; Nikawa, Makoto

    2011-01-17

    Permanent mold casting using mold temperatures below 200 deg. C was conducted to obtain a high-strength, thin-walled casting. Al-7.36 mass% Si -0.18 Cu- 0.27Mg-0.34Fe alloy JIS-AC4C was cast using a bottom pouring cast plan. The product had a rectangular tube shape (70 mm W x 68 mm D x 180 mm H) with wall thicknesses of 1, 3 and 5 mm. The effect of heat insulation at the melt path was compared when using a sand runner insert and when using a steel runner insert as well as a powder mold release agent. Fine microstructures were observed in the casting. The smaller the thickness, the higher the hardness with smaller secondary dendrite arm spacing (SDAS). However, the hardness and the SDAS were unaffected by the mold temperature. It was proposed that the avoidance of the formation of primary {alpha} dendrite at the melt path generates a higher strength casting with adequate mold filling.

  3. Design concepts for a pulse power test facility to simulate EMP surges. Part II. Slow pulses

    SciTech Connect (OSTI)

    Dethlefsen, R.

    1985-10-01

    The work described in this report was sponsored by the Division of Electric Energy Systems (EES) of the US Department of Energy (DOE) through a subcontract with the Power Systems Technology Program at the Oak Ridge National Laboratory (ORNL). The work deals with the effect of high altitude nuclear bursts on electric power systems. In addition to fast voltage transients, slow, quasi-dc currents are also induced into extended power systems with grounded neutral connections. Similar phenomena at lower magnitude are generated by solar induced electromagnetic pulses (EMP). These have caused power outages, related to solar storms, at northern latitudes. The applicable utility experience is reviewed in order to formulate an optimum approach to future testing. From a wide variety of options two pulser designs were selected as most practical, a transformer-rectifier power supply, and a lead acid battery pulser. both can be mounted on a trailer as required for field testing on utility systems. The battery system results in the least cost. Testing on power systems requires that the dc pulser pass high values of alternating current, resulting from neutral imbalance or from potential fault currents. Batteries have a high ability to pass alternating currents. Most other pulser options must be protected by an ac bypass in the form of an expensive capacitor bank. 8D truck batteries can meet the original specification of 1 kA test current. Improved batteries for higher discharge currents are available.

  4. Pressurized solid oxide fuel cell/gas turbine combined cycle systems

    SciTech Connect (OSTI)

    George, R.A.

    1997-12-31

    Over the last 10 years, Westinghouse Electric Corporation has made great strides in advancing tubular solid oxide fuel cell (SOFC) technology towards commercialization by the year 2001. In 1993, Westinghouse initiated a program to develop pressurized solid oxide fuel cell/gas turbine (PSOFC/GT) combined cycle power systems because of the ultra-high electrical efficiencies, 60-75% (net AC/LHV CH4), inherent with these systems. This paper will discuss SOFC technology advancements in recent years, and the final phase development program which will focus on the development and demonstration of PSOFC/GT power systems for distributed power applications.

  5. Cognitive models applied to human effectiveness in national security environments (ergonomics of augmented cognition system design and application).

    SciTech Connect (OSTI)

    Ntuen, Celestine; Winchester, Woodrow III

    2004-06-01

    In complex simulation systems where humans interact with computer-generated agents, information display and the interplay of virtual agents have become dominant media and modalities of interface design. This design strategy is reflected in augmented reality (AR), an environment where humans interact with computer-generated agents in real-time. AR systems can generate large amount of information, multiple solutions in less time, and perform far better in time-constrained problem solving. The capabilities of AR have been leveraged to augment cognition in human information processing. In this sort of augmented cognition (AC) work system, while technology has become the main source for information acquisition from the environment, the human sensory and memory capacities have failed to cope with the magnitude and scale of information they encounter. This situation generates opportunity for excessive cognitive workloads, a major factor in degraded human performance. From the human effectiveness point of view, research is needed to develop, model, and validate simulation tools that can measure the effectiveness of an AR technology used to support the amplification of human cognition. These tools will allow us to predict human performance for tasks executed under an AC tool construct. This paper presents an exploration of ergonomics issues relevant to AR and AC systems design. Additionally, proposed research to investigate those ergonomic issues is discussed.

  6. Technical analysis of prospective photovoltaic systems in Utah.

    SciTech Connect (OSTI)

    Quiroz, Jimmy Edward; Cameron, Christopher P.

    2012-02-01

    This report explores the technical feasibility of prospective utility-scale photovoltaic system (PV) deployments in Utah. Sandia National Laboratories worked with Rocky Mountain Power (RMP), a division of PacifiCorp operating in Utah, to evaluate prospective 2-megawatt (MW) PV plants in different locations with respect to energy production and possible impact on the RMP system and customers. The study focused on 2-MW{sub AC} nameplate PV systems of different PV technologies and different tracking configurations. Technical feasibility was evaluated at three different potential locations in the RMP distribution system. An advanced distribution simulation tool was used to conduct detailed time-series analysis on each feeder and provide results on the impacts on voltage, demand, voltage regulation equipment operations, and flicker. Annual energy performance was estimated.

  7. NSTX-U Control System Upgrades

    Office of Scientific and Technical Information (OSTI)

    5 PPPL- 5045 NSTX-U Control System Upgrades K.G. Erickson, D.A. Gates, S.P. Gerhardt, J.E. Lawson, R. Mozulay, P. Sichta, G.J. Tchilinguirian May 2013 5 ) PPPL P R IN C E T O N P L A S M A PHYSIC S L A B O R A T O R Y Prepared for the U.S. Department of Energy under Contract DE-AC02-09CH11466. P r i n c e t o n P la s m a P h y s ic s L a b o r a to r y R e p o r t D is c la i m e r s F u ll L egal D iscla im er This report was p repared as an account of work sponsored by an agency of the U

  8. Advanced Conservation Systems | Open Energy Information

    Open Energy Info (EERE)

    ACS supplies customers with products for solar pool heating, solar domestic hot water heating, and solar electricity. They also will help fit homes with 'LowE' windows...

  9. Effective Lagrangian for Nonrelativistic Systems (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    OSTI Identifier: 1180179 GrantContract Number: AC03-76SF00098 Type: Published Article Journal Name: Physical Review X Additional Journal Information: Journal Volume: 4; Journal ...

  10. Power Systems Technician | Princeton Plasma Physics Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    candidate will participate in the commissioning, operation and maintenance of two large, Hydro type vertical Motor-Generator, and associated equipment such, AC & DC bus, control...

  11. Advanced hybrid vehicle propulsion system study

    SciTech Connect (OSTI)

    Schwarz, R.

    1982-05-01

    Results of a study of an advanced heat engine/electric automotive hybrid propulsion system are presented. The system uses a rotary stratified charge engine and an ac motor/controller in a parallel hybrid configuration. The three tasks of the study were (1) parametric studies involving five different vehicle types, (2) design trade-off studies to determine the influence of various vehicle and propulsion system parameters on system performance fuel economy and cost, and (3) a conceptual design establishing feasibility at the selected approach. Energy consumption for the selected system was .034 l/km (61.3 mpg) for the heat engine and .221 kWh/km (.356 kWh/mi) for the electric power system over a modified J227a schedule D driving cycle. Life cycle costs were 7.13 cents/km (11.5 cents/mi) at $2/gal gasoline and 7 cents/kWh electricity for 160,000 km (100,000 mi) life.

  12. OE Announces Awardees Under the Remote Off-Grid Microgrid Design...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    design support tools that can provide decision support analysis on alternating current and ... Model (MIEFM, and Toolkit for Hybrid Systems Modeling and Evaluation (THYME)) to ...

  13. The closest M-dwarf quadruple system to the Sun

    SciTech Connect (OSTI)

    Davison, Cassy L.; White, R. J.; Jao, W.-C.; Henry, T. J.; Quinn, S. N.; Cantrell, J. R.; Winters, J. G.; Bailey, J. I. III; Riedel, A. R.; Subasavage, J. P.; Crockett, C. J.

    2014-02-01

    We report new infrared radial velocity measurements obtained with CSHELL at NASA's Infrared Telescope Facility that reveal the M3.5 dwarf GJ 867B to be a single-lined spectroscopic binary with a period of 1.795 0.017 days. Its velocity semi-amplitude of 21.4 0.5 km s{sup 1} corresponds to a minimum mass of 61 7 M {sub JUP}; the new companion, which we call GJ 867D, could be a brown dwarf. Stable astrometric measurements of GJ 867BD obtained with CTIO's 0.9 m telescope over the last decade exclude the presence of any massive planetary companions (7-18 M {sub JUP}) with longer orbital periods (2-10 yr) for the majority of orientations. These complementary observations are also used to determine the trigonometric distance and proper motion of GJ 867BD; the measurements are consistent with the HIPPARCOS measured values of the M2 dwarf GJ 867AC, which is itself a 4.1 day double-lined spectroscopic binary at a projected separation of 24.''5 (216 AU) from GJ 867BD. These new measurements strengthen the case that GJ 867AC and GJ 867BD are physically associated, making the GJ 867 system one of only four quadruple systems within 10 pc of the Sun (d = 8.82 0.08 pc) and the only among these with all M-dwarf (or cooler) components.

  14. REFERENCE NO. OF DOCUMENT BEING CONTINUED AEO CONTINUATION SHEET DE-AC27-08RV14800/057 2G OF

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SHEET DE-AC27-08RV14800/057 2G OF NAME OF OFFEROR OR CO NTRACTOR WASHINGTON RIVER PROTECTION SOLUTIONS LLC________________ ITEM NO. SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT (A) (B) (C) (D) (E) (F) NEW ACCOUNTING CODE ADDED: Account code: WRPS Spares Account Fund D1250 Appr Year 2010 Allottee 34 Reporting Entity 421301 Object Class 25200 Program 1110909 Project 0D01481 WFO D0DD0D0 Local Use 0421405 Amount: $1,80D,000.00 Account code: WEIPS Fund 01250 Appr Year 2010 Allottee 34 Reporting

  15. REFERENCE NO. OF DOCUMENT BEING CONTINUED AEO CONTINUATION SHEETI DE-AC27-08RV14800/075 [AG OF

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SHEETI DE-AC27-08RV14800/075 [AG OF NAME OF OFFEROR OR CONTRACTOR WASHINGTON RIVER PROTECTION SOLUTIONS LLC ITEM NO. SUPPLIES/SERVICES QUANTITY JNIT UNIT PRICE AMOUNT (A) j(B) (C) (D) (E) (F) Account code: Fund 01250 Appr Year 2ulu Allottee 34 Reporting Entity 421301 Object Class 25200 Program 1110909 Project 0001481 WFO 0000000 Local Use 0000000 Amount: $5,918,827.27 Account code: WTP Support Funding for RFS OWTPO1 Fund 01250 Appr Year 2010 Allottee 34 R eporting Entity 421301 uuj1JeLu

  16. Emergent topological mirror insulator in t 2 g -orbital systems (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Emergent topological mirror insulator in t 2 g -orbital systems Citation Details In-Document Search Title: Emergent topological mirror insulator in t 2 g -orbital systems Authors: Tai, Yuan-Yen ; Wang, C.-C. Joseph ; Graf, Matthias J. ; Zhu, Jian-Xin ; Ting, C. S. Publication Date: 2015-01-15 OSTI Identifier: 1180575 Grant/Contract Number: AC52-06NA25396 Type: Publisher's Accepted Manuscript Journal Name: Physical Review B Additional Journal Information: Journal

  17. Gas Fired Test System For Stirling Engines. (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Gas Fired Test System For Stirling Engines. Citation Details In-Document Search Title: Gas Fired Test System For Stirling Engines. Abstract not provided. Authors: Lloyd, Jimmy ; John Lawler Publication Date: 2007-10-01 OSTI Identifier: 1148030 Report Number(s): SAND2007-6644C 522685 DOE Contract Number: DE-AC04-94AL85000 Resource Type: Conference Resource Relation: Conference: Energy Sustainability 2007 held June 27-30, 2007 in Long Beach, CA.; Related Information: Proposed for presentation at

  18. A Few Thoughts on Future Systems. (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    A Few Thoughts on Future Systems. Citation Details In-Document Search Title: A Few Thoughts on Future Systems. Abstract not provided. Authors: Tomkins, James L. Publication Date: 2007-06-01 OSTI Identifier: 1148214 Report Number(s): SAND2007-4142C 522622 DOE Contract Number: DE-AC04-94AL85000 Resource Type: Conference Resource Relation: Conference: JOWOG34 Meeting held May 3, 2007 in Los Alamos, NM.; Related Information: Proposed for presentation at the JOWOG34 Meeting held May 3, 2007 in Los

  19. Advances in the ab initio description of nuclear three-cluster systems

    Office of Scientific and Technical Information (OSTI)

    (Conference) | SciTech Connect Advances in the ab initio description of nuclear three-cluster systems Citation Details In-Document Search Title: Advances in the ab initio description of nuclear three-cluster systems Authors: Redondo, C R ; Quaglioni, S ; Navratil, P ; Hupin, G Publication Date: 2015-08-25 OSTI Identifier: 1234622 Report Number(s): LLNL-PROC-676587 DOE Contract Number: AC52-07NA27344 Resource Type: Conference Resource Relation: Conference: Presented at: 21st International

  20. Optimal Initial Conditions for Coupling Ice Sheet Models to Earth System

    Office of Scientific and Technical Information (OSTI)

    Models. (Journal Article) | SciTech Connect Optimal Initial Conditions for Coupling Ice Sheet Models to Earth System Models. Citation Details In-Document Search Title: Optimal Initial Conditions for Coupling Ice Sheet Models to Earth System Models. Abstract not provided. Authors: Perego, Mauro ; Price, Stephen ; Stadler, Georg Publication Date: 2014-04-01 OSTI Identifier: 1142266 Report Number(s): SAND2014-2781J 507169 DOE Contract Number: DE-AC04-94AL85000 Resource Type: Journal Article

  1. PDV workshop time-multiplexed system. (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    PDV workshop time-multiplexed system. Citation Details In-Document Search Title: PDV workshop time-multiplexed system. Abstract not provided. Authors: Jilek, Brook Anton Publication Date: 2011-10-01 OSTI Identifier: 1118547 Report Number(s): SAND2011-8167C 481713 DOE Contract Number: AC04-94AL85000 Resource Type: Conference Resource Relation: Conference: 6th annual PDV workshop held November 2-4, 2011 in Livermore, CA.; Related Information: Proposed for presentation at the 6th annual PDV

  2. PROBING THE MAGNETISM IN THE CEMIN_5 HEAVY FERMION SYSTEMS BY NMR

    Office of Scientific and Technical Information (OSTI)

    (Conference) | SciTech Connect Conference: PROBING THE MAGNETISM IN THE CEMIN_5 HEAVY FERMION SYSTEMS BY NMR Citation Details In-Document Search Title: PROBING THE MAGNETISM IN THE CEMIN_5 HEAVY FERMION SYSTEMS BY NMR Authors: CURRO, NICHOLAS J. [1] ; URBANO, RICARDO R. [1] ; YOUNG, BEN-LI [1] + Show Author Affiliations Los Alamos National Laboratory Publication Date: 2007-03-12 OSTI Identifier: 1238122 Report Number(s): LA-UR-07-1626 DOE Contract Number: AC52-06NA25396 Resource Type:

  3. Melting in the Iron-Oxygen-Silicon System up to 85 GPa. (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect SciTech Connect Search Results Journal Article: Melting in the Iron-Oxygen-Silicon System up to 85 GPa. Citation Details In-Document Search Title: Melting in the Iron-Oxygen-Silicon System up to 85 GPa. Authors: Seagle, Christopher T ; Cottrell, Elizabeth ; Fei, Yingwei ; Dera, Przemyslaw. Publication Date: 2012-03-01 OSTI Identifier: 1074068 Report Number(s): SAND2012-1892J DOE Contract Number: AC04-94AL85000 Resource Type: Journal Article Resource Relation: Journal Name:

  4. Melting in the Iron-Oxygen-Silicon System up to 85 GPa. (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Journal Article: Melting in the Iron-Oxygen-Silicon System up to 85 GPa. Citation Details In-Document Search Title: Melting in the Iron-Oxygen-Silicon System up to 85 GPa. Abstract not provided. Authors: Seagle, Christopher T ; Cottrell, Elizabeth ; Fei, Yingwei ; Dera, Przemyslaw Publication Date: 2012-03-01 OSTI Identifier: 1078694 Report Number(s): SAND2012-1892J 447870 DOE Contract Number: AC04-94AL85000 Resource Type: Journal Article Resource Relation: Journal Name: J.

  5. Collective many-body van der Waals interactions in molecular systems

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Journal Article: Collective many-body van der Waals interactions in molecular systems Citation Details In-Document Search Title: Collective many-body van der Waals interactions in molecular systems Authors: DeStasio, Jr., R.A. ; von Lilienfeld, O.A. ; Tkatchenko, A. [1] + Show Author Affiliations (LCF) [LCF Publication Date: 2012-09-11 OSTI Identifier: 1132743 Report Number(s): ANL/LCF/JA-72880 Journal ID: 0027-8424 DOE Contract Number: DE-AC02-06CH11357

  6. Microsoft Word - Future Power Systems 20 - The Smart Enterprise.doc

    Energy Savers [EERE]

    0 The Smart Enterprise, its Objective and Forecasting.    Steve Browning Page 1 of 6 May 2010 Overview Each AC Power System is always in perfect balance (Kirchoff's law). The wires have no storage and the product moves through them at the speed of light from every electrical alternator and other generation mechanism through every socket to every demand. What the System Operators have to do is continuously match (NOT just balance) Generation to Demand within close limits or the

  7. System Software: A Necessary but Ill-prepared Hero. (Conference) | SciTech

    Office of Scientific and Technical Information (OSTI)

    Connect System Software: A Necessary but Ill-prepared Hero. Citation Details In-Document Search Title: System Software: A Necessary but Ill-prepared Hero. Abstract not provided. Authors: Heroux, Michael Allen Publication Date: 2014-01-01 OSTI Identifier: 1140697 Report Number(s): SAND2014-0809C 498679 DOE Contract Number: DE-AC04-94AL85000 Resource Type: Conference Resource Relation: Conference: Salishan Conference on High Speed Computing held April 21-24, 2014 in Gleneden Beach, OR.;

  8. System for Calibrating the Energy-Dependent Response of an Elliptical

    Office of Scientific and Technical Information (OSTI)

    Bragg-Crystal Spectrometer (Conference) | SciTech Connect System for Calibrating the Energy-Dependent Response of an Elliptical Bragg-Crystal Spectrometer Citation Details In-Document Search Title: System for Calibrating the Energy-Dependent Response of an Elliptical Bragg-Crystal Spectrometer Authors: Marrs, R E ; Brown, G V ; Emig, J A ; Heeter, R F Publication Date: 2014-05-26 OSTI Identifier: 1144755 Report Number(s): LLNL-CONF-655061 DOE Contract Number: DE-AC52-07NA27344 Resource Type:

  9. Ten years of ASC systems has the hardware stayed on the curve? (Conference)

    Office of Scientific and Technical Information (OSTI)

    | SciTech Connect Conference: Ten years of ASC systems has the hardware stayed on the curve? Citation Details In-Document Search Title: Ten years of ASC systems has the hardware stayed on the curve? No abstract prepared. Authors: Tomkins, James Lee Publication Date: 2006-02-01 OSTI Identifier: 915580 Report Number(s): SAND2006-1241C TRN: US200816%%5 DOE Contract Number: AC04-94AL85000 Resource Type: Conference Resource Relation: Conference: Proposed for presentation at the DOE ASC PI meeting

  10. Assessment of research directions for high-voltage direct-current power systems. Final report

    SciTech Connect (OSTI)

    Long, W F

    1982-09-01

    High voltage direct current (HVDC) power transmission continues to be an emerging technology nearly thirty years after its introduction into modern power systems. To date its use has been restricted to either specialized applications having identifiable economic advantages (e.g., breakeven distance) or, rarely, applications where decoupling is needed. Only recently have the operational advantages (e.g., power modulation) of HVDC been realized on operating systems. A research project whose objective was to identify hardware developments and, where appropriate, system applications which can exemplify cost and operational advantages of integrated ac/dc power systems is discussed. The three principal tasks undertaken were: assessment of equipment developments; quantification of operational advantages; and interaction with system planners. Interest in HVDC power transmission has increased markedly over the past several years, and many new systems are now being investigated. The dissemination of information about HVDC, including specifically the symposium undertaken for Task 3, is a critical factor in fostering an understanding of this important adjunct to ac power transmission.

  11. Investigation of Ground-Fault Protection Devices for Photovoltaic Power Systems Applications

    SciTech Connect (OSTI)

    BOWER,WARD I.; WILES,JOHN

    2000-10-03

    Photovoltaic (PV) power systems, like other electrical systems, may be subject to unexpected ground faults. Installed PV systems always have invisible elements other than those indicated by their electrical schematics. Stray inductance, capacitance and resistance are distributed throughout the system. Leakage currents associated with the PV modules, the interconnected array, wires, surge protection devices and conduit add up and can become large enough to look like a ground-fault. PV systems are frequently connected to other sources of power or energy storage such as batteries, standby generators, and the utility grid. This complex arrangement of distributed power and energy sources, distributed impedance and proximity to other sources of power requires sensing of ground faults and proper reaction by the ground-fault protection devices. The different dc grounding requirements (country to country) often add more confusion to the situation. This paper discusses the ground-fault issues associated with both the dc and ac side of PV systems and presents test results and operational impacts of backfeeding commercially available ac ground-fault protection devices under various modes of operation. Further, the measured effects of backfeeding the tripped ground-fault devices for periods of time comparable to anti-islanding allowances for utility interconnection of PV inverters in the United States are reported.

  12. System and method for design and optimization of grid connected photovoltaic power plant with multiple photovoltaic module technologies

    DOE Patents [OSTI]

    Thomas, Bex George; Elasser, Ahmed; Bollapragada, Srinivas; Galbraith, Anthony William; Agamy, Mohammed; Garifullin, Maxim Valeryevich

    2016-03-29

    A system and method of using one or more DC-DC/DC-AC converters and/or alternative devices allows strings of multiple module technologies to coexist within the same PV power plant. A computing (optimization) framework estimates the percentage allocation of PV power plant capacity to selected PV module technologies. The framework and its supporting components considers irradiation, temperature, spectral profiles, cost and other practical constraints to achieve the lowest levelized cost of electricity, maximum output and minimum system cost. The system and method can function using any device enabling distributed maximum power point tracking at the module, string or combiner level.

  13. NEXT GENERATION TURBINE SYSTEM STUDY

    SciTech Connect (OSTI)

    Frank Macri

    2002-02-28

    Rolls-Royce has completed a preliminary design and marketing study under a Department of Energy (DOE) cost shared contract (DE-AC26-00NT40852) to analyze the feasibility of developing a clean, high efficiency, and flexible Next Generation Turbine (NGT) system to meet the power generation market needs of the year 2007 and beyond. Rolls-Royce evaluated the full range of its most advanced commercial aerospace and aeroderivative engines alongside the special technologies necessary to achieve the aggressive efficiency, performance, emissions, economic, and flexibility targets desired by the DOE. Heavy emphasis was placed on evaluating the technical risks and the economic viability of various concept and technology options available. This was necessary to ensure the resulting advanced NGT system would provide extensive public benefits and significant customer benefits without introducing unacceptable levels of technical and operational risk that would impair the market acceptance of the resulting product. Two advanced cycle configurations were identified as offering significant advantages over current combined cycle products available in the market. In addition, balance of plant (BOP) technologies, as well as capabilities to improve the reliability, availability, and maintainability (RAM) of industrial gas turbine engines, have been identified. A customer focused survey and economic analysis of a proposed Rolls-Royce NGT product configuration was also accomplished as a part of this research study. The proposed Rolls-Royce NGT solution could offer customers clean, flexible power generation systems with very high efficiencies, similar to combined cycle plants, but at a much lower specific cost, similar to those of simple cycle plants.

  14. ETA-AC004

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Electric Transportation Applications All Rights Reserved TABLE OF CONTENTS 1.0 Objectives ... Electric Transportation Applications All Rights Reserved 1.0 Objective The objective of ...

  15. ETA-AC002

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Electric Transportation Applications All Rights Reserved TABLE OF CONTENTS 1.0 Objectives ... Electric Transportation Applications All Rights Reserved 1.0 Objective The objective of ...

  16. ETA-AC003

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Electric Transportation Applications All Rights Reserved TABLE OF CONTENTS 1.0 Objectives ... Electric Transportation Applications All Rights Reserved 1.0 Objective The objective of ...

  17. ETA-AC006

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Electric Transportation Applications All Rights Reserved TABLE OF CONTENTS 1.0 Objectives ... Electric Transportation Applications All Rights Reserved 1.0 Objective This procedure ...

  18. A linear MOSFET regulation system to improve the performance of the booster-ramping power supplies at the APS.

    SciTech Connect (OSTI)

    Feng, G.; Deriy, B.; Wang, J.; Shang, H.; Xu, S.

    2008-01-01

    The APS booster ring uses ramping power supplies to power the sextupole, quadrupole, and dipole magnets as the beam energy ramps up linearly to 7 GeV. Due to the circuit topology used, those supplies are unable to follow the linear ramp to the desired accuracy. The best regulation achieved is 0.5% while 0.1 % is desired. In addition to the unsatisfying regulation, those supplies are sensitive to AC line perturbations and are not able to reject AC line noises higher than a few tens of Hertz. To improve the performance, a linear MOSFET regulation system using paralleled MOSFET devices in series with the power supply is proposed. The system uses a real-time current feedback loop to force the MOSFETs to work in the linear operation mode. By using this linear MOSFET regulator, the voltage drop on MOSFETs, and hence the voltage imposed on magnets, can be regulated very quickly. As a result, the regulation of the magnet current can be improved significantly. Experiments and simulation have been performed to verify the proposed method. Results show that, with the linear regulator, the current regulation can be improved to better than 0.1%. Because of the high bandwidth of the linear regulator, it can reduce the harmonic content in the output current as well as reject the AC line disturbance.

  19. System Diagram

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    System Diagram System Diagram Diagram of IO architecture on Hopper Diagram of external IO services on the Hopper system Last edited: 2011-04-14 15:11:1...

  20. File Systems

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    on PDSF please see Eliza File Systems and Other File Systems. Below is a summary of how ATLAS uses the various systems: common In the past ATLAS used common primarily for their...

  1. System Diagram

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    System Diagram System Diagram Diagram of I/O architecture on Hopper Diagram of external I/O services on the Hopper system Last edited: 2016-04-29 11:35:23

  2. PRESSURIZED SOLID OXIDE FUEL CELL/GAS TURBINE POWER SYSTEM

    SciTech Connect (OSTI)

    W.L. Lundberg; G.A. Israelson; R.R. Moritz; S.E. Veyo; R.A. Holmes; P.R. Zafred; J.E. King; R.E. Kothmann

    2000-02-01

    Power systems based on the simplest direct integration of a pressurized solid oxide fuel cell (SOFC) generator and a gas turbine (GT) are capable of converting natural gas fuel energy to electric power with efficiencies of approximately 60% (net AC/LHV), and more complex SOFC and gas turbine arrangements can be devised for achieving even higher efficiencies. The results of a project are discussed that focused on the development of a conceptual design for a pressurized SOFC/GT power system that was intended to generate 20 MWe with at least 70% efficiency. The power system operates baseloaded in a distributed-generation application. To achieve high efficiency, the system integrates an intercooled, recuperated, reheated gas turbine with two SOFC generator stages--one operating at high pressure, and generating power, as well as providing all heat needed by the high-pressure turbine, while the second SOFC generator operates at a lower pressure, generates power, and provides all heat for the low-pressure reheat turbine. The system cycle is described, major system components are sized, the system installed-cost is estimated, and the physical arrangement of system components is discussed. Estimates of system power output, efficiency, and emissions at the design point are also presented, and the system cost of electricity estimate is developed.

  3. Computer System,

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    undergraduate summer institute http:isti.lanl.gov (Educational Prog) 2016 Computer System, Cluster, and Networking Summer Institute Purpose The Computer System,...

  4. Summary of State-of-the-Art Power Conversion Systems for Energy Storage Applications

    SciTech Connect (OSTI)

    Atcitty, S.; Gray-Fenner, A.; Ranade, S.

    1998-09-01

    The power conversion system (PCS) is a vital part of many energy storage systems. It serves as the interface between the storage device, an energy source, and an AC load. This report summarizes the results of an extensive study of state-of-the-art power conversion systems used for energy storage applications. The purpose of the study was to investigate the potential for cost reduction and performance improvement in these power conversion systems and to provide recommendations for fiture research and development. This report provides an overview of PCS technology, a description of several state-of-the-art power conversion systems and how they are used in specific applications, a summary of four basic configurations for l:he power conversion systems used in energy storage applications, a discussion of PCS costs and potential cost reductions, a summary of the stancku-ds and codes relevant to the technology, and recommendations for future research and development.

  5. The AP1000{sup R} nuclear power plant innovative features for extended station blackout mitigation

    SciTech Connect (OSTI)

    Vereb, F.; Winters, J.; Schulz, T.; Cummins, E.; Oriani, L. [Westinghouse Electric Company LLC, 1000 Westinghouse Drive, Cranberry Township, PA 16066 (United States)

    2012-07-01

    Station Blackout (SBO) is defined as 'a condition wherein a nuclear power plant sustains a loss of all offsite electric power system concurrent with turbine trip and unavailability of all onsite emergency alternating current (AC) power system. Station blackout does not include the loss of available AC power to buses fed by station batteries through inverters or by alternate AC sources as defined in this section, nor does it assume a concurrent single failure or design basis accident...' in accordance with Reference 1. In this paper, the innovative features of the AP1000 plant design are described with their operation in the scenario of an extended station blackout event. General operation of the passive safety systems are described as well as the unique features which allow the AP1000 plant to cope for at least 7 days during station blackout. Points of emphasis will include: - Passive safety system operation during SBO - 'Fail-safe' nature of key passive safety system valves; automatically places the valve in a conservatively safe alignment even in case of multiple failures in all power supply systems, including normal AC and battery backup - Passive Spent Fuel Pool cooling and makeup water supply during SBO - Robustness of AP1000 plant due to the location of key systems, structures and components required for Safe Shutdown - Diverse means of supplying makeup water to the Passive Containment Cooling System (PCS) and the Spent Fuel Pool (SFP) through use of an engineered, safety-related piping interface and portable equipment, as well as with permanently installed onsite ancillary equipment. (authors)

  6. Two-phase uninterruptible power supply

    SciTech Connect (OSTI)

    Severinsky, A.J.; Rajagopalan, S.

    1991-12-24

    This patent describes a two-phase AC power supply. It comprises AC systems; connectors; electric currents; and phase shift.

  7. Controlling of grid connected photovoltaic lighting system with fuzzy logic

    SciTech Connect (OSTI)

    Saglam, Safak; Ekren, Nazmi; Erdal, Hasan

    2010-02-15

    In this study, DC electrical energy produced by photovoltaic panels is converted to AC electrical energy and an indoor area is illuminated using this energy. System is controlled by fuzzy logic algorithm controller designed with 16 rules. Energy is supplied from accumulator which is charged by photovoltaic panels if its energy would be sufficient otherwise it is supplied from grid. During the 1-week usage period at the semester time, 1.968 kWh energy is used from grid but designed system used 0.542 kWh energy from photovoltaic panels at the experiments. Energy saving is determined by calculations and measurements for one education year period (9 months) 70.848 kWh. (author)

  8. File Systems

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    File Systems File Systems For a general description of the different file systems available on PDSF please see Eliza File Systems and Other File Systems. Below is a summary of how ALICE uses the various systems: /common ALICE uses /common to build the software that supports its grid-based automated production work. This software includes AliRoot, Geant, AliEn, and XRootD. /eliza6, /eliza8, /eliza17 ALICE has space on 3 elizas: 16TB on /eliza6, 6TB on /eliza8 and 11TB on /eliza17. The space on

  9. File Systems

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    File Systems File Systems For a general description of the different file systems available on PDSF please see Eliza File Systems and Other File Systems. Below is a summary of how STAR uses the various systems: /common The STAR software is installed on /common. For 32sl44 it is under /common/star/star44 and for sl53 it is under /common/star/star53. In both cases the software consists primarily of a STAR-specific ROOT installation on which releases of the STAR libraries are built as shown on the

  10. Files systems

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Files systems Files systems NERSC's global home and project file systems are available on Franklin. Additionally, Franklin has over 400 TB of locally attached high-performance /scratch disk space For information on the NERSC file systems, see the link at right. Scratch File Systems Size Aggregate Peak Performance # IO Servers Interconnect File System Software Disk Array Vendor $SCRATCH 209 TB 17 GB/sec 24 Lustre DDN $SCRATCH2 209 TB 17 GB/sec 24 Lustre DDN SCRATCH and SCRATCH2 There are two

  11. Attachment J-16 Portfolio Management Task Order 13-002 Title: DOE-HQ Security System Review and Assessment

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Section J Contract No. DE-AC06-09RL14728 Modification 280 Attachment J-16 Portfolio Management Task Order 13-002 Title: DOE-HQ Security System Review and Assessment Revision Number: 0 Date: 04/11/2013 Start: 05/01/2013 Finish: 07/30/2013 1.0 DESCRIPTION The DOE Office of Environmental Management (EM) Headquarters Security System (HQSS) is installed at the EM Consolidated Business Center (CBC) in Cincinnati, OH and administered from DOE Headquarters in Washington, DC. HQSS has been running as a

  12. Impact of Generator Flexibility on Electric System Costs and Integration of Renewable Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Impact of Generator Flexibility on Electric System Costs and Integration of Renewable Energy D. Palchak and P. Denholm Technical Report NREL/TP-6A20-62275 July 2014 NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy Operated by the Alliance for Sustainable Energy, LLC This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. Contract No. DE-AC36-08GO28308 National Renewable

  13. Geographic Information Systems in Support of Wind Energy Activities at NREL: Preprint

    Wind Powering America (EERE)

    Geographic Information Systems in Support of Wind Energy Activities at NREL Preprint January 2001 * NREL/CP-500-29164 D.M. Heimiller S.R. Haymes To be presented at the 39 th AIAA Aerospace Sciences Meeting Reno, Nevada January 8-11, 2001 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute * * * * Battelle * * * * Bechtel Contract No. DE-AC36-99-GO10337 NOTICE The submitted

  14. Ramping Performance Analysis of the Kahuku Wind-Energy Battery Storage System

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Ramping Performance Analysis of the Kahuku Wind-Energy Battery Storage System V. Gevorgian and D. Corbus Management Report NREL/MP-5D00-59003 November 2013 NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy Operated by the Alliance for Sustainable Energy, LLC This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. Contract No. DE-AC36-08GO28308 National Renewable Energy

  15. Market Evolution: Wholesale Electricity Market Design for 21st Century Power Systems

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1stCenturyPower.org Technical Report NREL/TP-6A20-57477 October 2013 Contract No. DE-AC36-08GO28308 Market Evolution: Wholesale Electricity Market Design for 21 st Century Power Systems Jaquelin Cochran, Mackay Miller, Michael Milligan, Erik Ela, Douglas Arent, and Aaron Bloom National Renewable Energy Laboratory Matthew Futch IBM Juha Kiviluoma and Hannele Holtinnen VTT Technical Research Centre of Finland Antje Orths Energinet.dk Emilio Gómez-Lázaro and Sergio Martín-Martínez Universidad

  16. Detection of gas leakage

    SciTech Connect (OSTI)

    Thornberg, Steven M; Brown, Jason

    2015-02-17

    A method of detecting leaks and measuring volumes as well as a device, the Power-free Pump Module (PPM), provides a self-contained leak test and volume measurement apparatus that requires no external sources of electrical power during leak testing or volume measurement. The PPM is a portable, pneumatically-controlled instrument capable of generating a vacuum, calibrating volumes, and performing quantitative leak tests on a closed test system or device, all without the use of alternating current (AC) power. Capabilities include the ability is to provide a modest vacuum (less than 10 Torr) using a venturi pump, perform a pressure rise leak test, measure the gas's absolute pressure, and perform volume measurements. All operations are performed through a simple rotary control valve which controls pneumatically-operated manifold valves.

  17. Detection of gas leakage

    DOE Patents [OSTI]

    Thornberg, Steven; Brown, Jason

    2012-06-19

    A method of detecting leaks and measuring volumes as well as an apparatus, the Power-free Pump Module (PPM), that is a self-contained leak test and volume measurement apparatus that requires no external sources of electrical power during leak testing or volume measurement, where the invention is a portable, pneumatically-controlled instrument capable of generating a vacuum, calibrating volumes, and performing quantitative leak tests on a closed test system or device, all without the use of alternating current (AC) power. Capabilities include the ability is to provide a modest vacuum (less than 10 Torr), perform a pressure rise leak test, measure the gas's absolute pressure, and perform volume measurements. All operations are performed through a simple rotary control valve which controls pneumatically-operated manifold valves.

  18. Time varying voltage combustion control and diagnostics sensor

    DOE Patents [OSTI]

    Chorpening, Benjamin T.; Thornton, Jimmy D.; Huckaby, E. David; Fincham, William

    2011-04-19

    A time-varying voltage is applied to an electrode, or a pair of electrodes, of a sensor installed in a fuel nozzle disposed adjacent the combustion zone of a continuous combustion system, such as of the gas turbine engine type. The time-varying voltage induces a time-varying current in the flame which is measured and used to determine flame capacitance using AC electrical circuit analysis. Flame capacitance is used to accurately determine the position of the flame from the sensor and the fuel/air ratio. The fuel and/or air flow rate (s) is/are then adjusted to provide reduced flame instability problems such as flashback, combustion dynamics and lean blowout, as well as reduced emissions. The time-varying voltage may be an alternating voltage and the time-varying current may be an alternating current.

  19. System Effectiveness

    SciTech Connect (OSTI)

    Powell, Danny H; Elwood Jr, Robert H

    2011-01-01

    An effective risk assessment system is needed to address the threat posed by an active or passive insider who, acting alone or in collusion, could attempt diversion or theft of nuclear material. It is critical that a nuclear facility conduct a thorough self-assessment of the material protection, control, and accountability (MPC&A) system to evaluate system effectiveness. Self-assessment involves vulnerability analysis and performance testing of the MPC&A system. The process should lead to confirmation that mitigating features of the system effectively minimize the threat, or it could lead to the conclusion that system improvements or upgrades are necessary to achieve acceptable protection against the threat. Analysis of the MPC&A system is necessary to understand the limits and vulnerabilities of the system to internal threats. Self-assessment helps the facility be prepared to respond to internal threats and reduce the risk of theft or diversion of nuclear material. MSET is a self-assessment or inspection tool utilizing probabilistic risk assessment (PRA) methodology to calculate the system effectiveness of a nuclear facility's MPC&A system. MSET analyzes the effectiveness of an MPC&A system based on defined performance metrics for MPC&A functions based on U.S. and international best practices and regulations. A facility's MC&A system can be evaluated at a point in time and reevaluated after upgrades are implemented or after other system changes occur. The total system or specific subareas within the system can be evaluated. Areas of potential performance improvement or system upgrade can be assessed to determine where the most beneficial and cost-effective improvements should be made. Analyses of risk importance factors show that sustainability is essential for optimal performance. The analyses reveal where performance degradation has the greatest detrimental impact on total system risk and where performance improvements have the greatest reduction in system risk. The risk importance factors show the amount of risk reduction achievable with potential upgrades and the amount of risk reduction actually achieved after upgrades are completed. Applying the risk assessment tool gives support to budget prioritization by showing where budget support levels must be sustained for MC&A functions most important to risk. Results of the risk assessment are also useful in supporting funding justifications for system improvements that significantly reduce system risk.

  20. Cryogenic System for a High Temperature Superconducting Power Transmission Cable

    SciTech Connect (OSTI)

    Demko, J.A.; Gouge, M.J.; Hughey, R.L.; Lue, J.W.; Martin, R.; Sinha, U.; Stovall, J.P.

    1999-07-12

    High-temperature superconducting (HTS) cable systems for power transmission are under development that will use pressurized liquid nitrogen to provide cooling of the cable and termination hardware. Southwire Company and Oak Ridge National Laboratory have been operating a prototype HTS cable system that contains many of the typical components needed for a commercial power transmission application. It is being used to conduct research in the development of components and systems for eventual commercial deployment. The cryogenic system was built by Air Products and Chemicals, Allentown, Pennsylvania, and can circulate up to 0.35 kg/s of liquid nitrogen at temperatures as low as 67 K at pressures of 1 to 10 bars. Sufficient cooling is provided for testing a 5-m-long HTS transmission cable system that includes the terminations required for room temperature electrical connections. Testing of the 5-m HTS transmission cable has been conducted at the design ac conditions of 1250 A and 7.5 kV line to ground. This paper contains a description of the essential features of the HTS cable cryogenic system and performance results obtained during operation of the system. The salient features of the operation that are important in large commercial HTS cable applications will be discussed.

  1. What makes an electric welding arc perform its required function

    SciTech Connect (OSTI)

    Correy, T.B.

    1982-09-01

    The physics of direct current and alternating current welding arcs, the heat transfer of direct current welding arcs, the characteristics of dc welding and ac welding power supplies and recommendations for the procurement and maintenance of precision power supplies are discussed. (LCL)

  2. Contingency selection theory for steady-state security assessment of power systems

    SciTech Connect (OSTI)

    Halpin, T.F.

    1982-01-01

    This thesis presents the theory and method for systematically finding the performance index (PI) which is used in Automatic Contingency Selection (ACS) algorithms. The purpose of the ACS algorithm is to determine whether a contingency has an impact on the security of the power system (such as out-of-limit conditions in the post-contigency operation) or not, in a computationally efficient manner. Since this is a binary decision problem, then the choice of the PI is equivalent ot the selection of a decision function which measures the impact of each contingency on the system performance in terms of giving out-of-limit conditions. This thesis shows how to select the PI together with a threshold value J/sub th/ so as to minimize the probability of misclassifying the contingency. The main contribution of this thesis is that it gives the theoretical foundation for designing more effective ACS algorithms. It shows that the selection of the PI is based on a statistical decision criteria such as the Bayes Risk Criterion, since one needs to examine the risk involved in misclassifying the contingency. This approach is used to find the PI for monitoring both the line flow, bus voltage and generator VAR limits. It is shown that when formulating the problem in the space of voltage magnitudes and phase angles then the problem of finding the PI which satisfies a specific contingency selection criteria can be stated as a set imbedding and volume maximization problem. These theoretical results are applied to the problem of tuning the weighting coefficients in the currently used PI's for analyzing either the real power flow or node voltage magnitude problems in order ot guarantee proper classification of the contingencies in terms of minimizing the probabilities of missing critial contingencies and false alarms.

  3. Utility Test Results of a 2-Megawatt, 10-Second Reserve-Power System

    SciTech Connect (OSTI)

    BALL,GREG J.; NORRIS,BENJAMIN L.

    1999-10-01

    This report documents the 1996 evaluation by Pacific Gas and Electric Company of an advanced reserve-power system capable of supporting 2 MW of load for 10 seconds. The system, developed under a DOE Cooperative Agreement with AC Battery Corporation of East Troy, Wisconsin, contains battery storage that enables industrial facilities to ''ride through'' momentary outages. The evaluation consisted of tests of system performance using a wide variety of load types and operating conditions. The tests, which included simulated utility outages and voltage sags, demonstrated that the system could provide continuous power during utility outages and other disturbances and that it was compatible with a variety of load types found at industrial customer sites.

  4. Temperature System

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    1 Soil Water and Temperature System  SWATS In the realm of global climate modeling, numerous variables affect the state of the atmosphere and climate. One important area is soil moisture and temperature. The ARM Program uses several types of instruments to gather soil moisture information. An example is the soil water and temperature system (SWATS) (Figure 1). A SWATS is located at each of 21 extended facility sites within the CART site boundary. Each system is configured to measure soil

  5. CALUTRON SYSTEM

    DOE Patents [OSTI]

    Lawrence, E.O.

    1958-08-12

    A calutron system capable of functioning with only a portion of the separation tanks in the system operating is described. The invention is a calutron system comprssing a closed series of alternated tanks and electromagnets having a mid-yoke connecting intermediate positions of the series. dividing the series into twv-o portions, and thereby providing a closed magnetic path through either of the portions.

  6. FINAL REPORT REGULATORY OFF GAS EMISSIONS TESTING ON THE DM1200 MELTER SYSTEM USING HLW AND LAW SIMULANTS VSL-05R5830-1 REV 0 10/31/05

    SciTech Connect (OSTI)

    KRUGER AA; MATLACK KS; GONG W; BARDAKCI T; D'ANGELO NA; BRANDYS M; KOT WK; PEGG IL

    2011-12-29

    The operational requirements for the River Protection Project - Waste Treatment Plant (RPP-WTP) Low Activity Waste (LAW) and High Level Waste (HLW) melter systems, together with the feed constituents, impose a number of challenges to the off-gas treatment system. The system must be robust from the standpoints of operational reliability and minimization of maintenance. The system must effectively control and remove a wide range of solid particulate matter, acid mists and gases, and organic constituents (including those arising from products of incomplete combustion of sugar and organics in the feed) to concentration levels below those imposed by regulatory requirements. The baseline design for the RPP-WTP LAW primary off-gas system includes a submerged bed scrubber (SBS), a wet electrostatic precipitator (WESP), and a high efficiency particulate air (HEPA) filter. The secondary off-gas system includes a sulfur-impregnated activated carbon bed (AC-S), a thermal catalytic oxidizer (TCO), a single-stage selective catalytic reduction NOx treatment system (SCR), and a packed-bed caustic scrubber (PBS). The baseline design for the RPP-WTP HLW primary off-gas system includes an SBS, a WESP, a high efficiency mist eliminator (HEME), and a HEPA filter. The HLW secondary off-gas system includes a sulfur-impregnated activated carbon bed, a silver mordenite bed, a TCO, and a single-stage SCR. The one-third scale HLW DM1200 Pilot Melter installed at the Vitreous State Laboratory (VSL) was equipped with a prototypical off-gas train to meet the needs for testing and confirmation of the performance of the baseline off-gas system design. Various modifications have been made to the DM1200 system as the details of the WTP design have evolved, including the installation of a silver mordenite column and an AC-S column for testing on a slipstream of the off-gas flow; the installation of a full-flow AC-S bed for the present tests was completed prior to initiation of testing. The DM1200 system was reconfigured to enable testing of the baseline HLW or LAW off-gas trains to perform off-gas emissions testing with both LAW and HLW simulants in the present work. During 2002 and 2003, many of these off-gas components were tested individually and in an integrated manner with the DM1200 Pilot Melter. Data from these tests are being used to support engineering design confirmation and to provide data to support air permitting activities. In fiscal year 2004, the WTP Project was directed by the Office of River Protection (ORP) to comply with Environmental Protection Agency (EPA) Maximum Achievable Control Technology (MACT) requirements for organics. This requires that the combined melter and off-gas system have destruction and removal efficiency (DRE) of >99.99% for principal organic dangerous constituents (PODCs). In order to provide confidence that the melter and off-gas system are able to achieve the required DRE, testing has been directed with both LAW and HLW feeds. The tests included both 'normal' and 'challenge' WTP melter conditions in order to obtain data for the potential range of operating conditions for the WTP melters and off-gas components. The WTP Project, Washington State Department of Ecology, and ORP have agreed that naphthalene will be used for testing to represent semi-volatile organics and allyl alcohol will be used to represent volatile organics. Testing was also performed to determine emissions of halides, metals, products of incomplete combustion (PICs), dioxins, furans, coplanar PCBs, total hydrocarbons, and COX and NOX, as well as the particle size distribution (PSD) of particulate matter discharged at the end of the off-gas train. A description of the melter test requirements and analytical methods used is provided in the Test Plan for this work. Test Exceptions were subsequently issued which changed the TCO catalyst, added total organic emissions (TOE) to exhaust sampling schedule, and allowing modification of the test conditions in response to attainable plenum temperatures as well as temperature increases in the sulfur impregnated activated carbon (AC-S) column. Data are provided in this final report for all the required emission samples as well as melter and off-gas conditions during all the sampling periods. Appended to this report are previously issued VSL Letter Reports on method development for monitoring allyl alcohol in melter exhaust streams, on the results of characterization of the selected AC-S carbon media (Donnau BAT37), and on DM1200 off-line tests on the AC-S bed; also appended are reports from Air Tech on emissions sampling, and reports from Keika Ventures on validation of analytical data provided by Severn Trent Laboratories of Knoxville, Tennessee.

  7. * Systems update

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    update * Edison update * NUG annual meeting * Queues and System Usage * User Survey results * Data ... - 21016 2015, Energy Sciences Network The Central ...

  8. National Renewable Energy Laboratory's Energy Systems Integration...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... Fuel cell * H2 high pressure compressor * AC and DC ... temperature range of 300C to 800C. Knowledge of thermophysical properties such as melting point, heat of fusion, ...

  9. Efficient uncertainty propagation for network multiphysics systems...

    Office of Scientific and Technical Information (OSTI)

    Report Number(s): SAND2013-0423J DOE Contract Number: AC04-94AL85000 Resource Type: Journal Article Resource Relation: Journal Name: Proposed for publication in International ...

  10. Preparing for Tomorrow's Systems: Manycore Resilience Patterns...

    Office of Scientific and Technical Information (OSTI)

    Report Number(s): SAND2011-4710C 465833 DOE Contract Number: AC04-94AL85000 Resource Type: Conference Resource Relation: Conference: International Congress on Industrial and Applied ...

  11. Power system

    DOE Patents [OSTI]

    Hickam, Christopher Dale

    2008-03-18

    A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

  12. Occupational Health Services Part I Contract No. DE-AC06-04RL14383; Modification M039 Section H

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Energy Health Manager PIA, Carlsbad Field Office Occupational Health Manager PIA, Carlsbad Field Office Occupational Health Manager PIA, Carlsbad Field Office PDF icon Occupational Health Manager PIA, Carlsbad Field Office More Documents & Publications Occupational Medicine - Assistant PIA, Idaho National Laboratory Integrated Safety Management Workshop Registration, PIA, Idaho National Laboratory Occupational Injury & Illness System (01&15) PIA, Idaho National Laboratory

    ;

  13. Gas Main Sensor and Communications Network System

    SciTech Connect (OSTI)

    Hagen Schempf

    2006-05-31

    Automatika, Inc. was contracted by the Department of Energy (DOE) and with co-funding from the Northeast Gas Association (NGA), to develop an in-pipe natural gas prototype measurement and wireless communications system for assessing and monitoring distribution networks. This projected was completed in April 2006, and culminated in the installation of more than 2 dozen GasNet nodes in both low- and high-pressure cast-iron and steel mains owned by multiple utilities in the northeastern US. Utilities are currently logging data (off-line) and monitoring data in real time from single and multiple networked sensors over cellular networks and collecting data using wireless bluetooth PDA systems. The system was designed to be modular, using in-pipe sensor-wands capable of measuring, flow, pressure, temperature, water-content and vibration. Internal antennae allowed for the use of the pipe-internals as a waveguide for setting up a sensor network to collect data from multiple nodes simultaneously. Sensor nodes were designed to be installed with low- and no-blow techniques and tools. Using a multi-drop bus technique with a custom protocol, all electronics were designed to be buriable and allow for on-board data-collection (SD-card), wireless relaying and cellular network forwarding. Installation options afforded by the design included direct-burial and external polemounted variants. Power was provided by one or more batteries, direct AC-power (Class I Div.2) and solar-array. The utilities are currently in a data-collection phase and intend to use the collected (and processed) data to make capital improvement decisions, compare it to Stoner model predictions and evaluate the use of such a system for future expansion, technology-improvement and commercialization starting later in 2006.

  14. Electronic system

    DOE Patents [OSTI]

    Robison, G H; Dickson, J F

    1960-11-15

    An electronic system is designed for indicating the occurrence of a plurality of electrically detectable events within predetermined time intervals. The system comprises separate input means electrically associated with the events under observation an electronic channel associated with each input means, including control means and indicating means; timing means adapted to apply a signal from the input means after a predetermined time to the control means to deactivate each of the channels; and means for resetting the system to its initial condition after the observation of each group of events. (D.L.C.)

  15. Contract No. DE-AC36-08GO28308 M&O Contract 2008-2013, between the Alliance for Sustainable Energy, LLC and the U.S. Department Of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    PART I SECTION B SUPPLIES AND SERVICES AND PRICE/COSTS DE-AC36-08GO28308 Modification M452 PART I SECTION B SUPPLIES AND SERVICES AND PRICE/COSTS TABLE OF CONTENTS B.1 Service Being Acquired ......................................................................................... 1 B.2 Obligation of Funds and Financial Limitations...................................................... 1 B.3 Transition Cost, Estimated Costs and Maximum Available Fee............................ 1 B.4 Allowability

  16. SAMPLING SYSTEM

    DOE Patents [OSTI]

    Hannaford, B.A.; Rosenberg, R.; Segaser, C.L.; Terry, C.L.

    1961-01-17

    An apparatus is given for the batch sampling of radioactive liquids such as slurries from a system by remote control, while providing shielding for protection of operating personnel from the harmful effects of radiation.

  17. Battery system

    DOE Patents [OSTI]

    Dougherty, Thomas J; Wood, Steven J; Trester, Dale B; Andrew, Michael G

    2013-08-27

    A battery module includes a plurality of battery cells and a system configured for passing a fluid past at least a portion of the plurality of battery cells in a parallel manner.

  18. Sustainable Energy Solutions Task 1.0: Networked Monitoring and Control of Small Interconnected Wind Energy Systems

    SciTech Connect (OSTI)

    Janet.twomey@wichita.edu

    2010-04-30

    EXECUTIVE SUMARRY This report presents accomplishments, results, and future work for one task of five in the Wichita State University Sustainable Energy Solutions Project: To develop a scale model laboratory distribution system for research into questions that arise from networked control and monitoring of low-wind energy systems connected to the AC distribution system. The lab models developed under this task are located in the Electric Power Quality Lab in the Engineering Research Building on the Wichita State University campus. The lab system consists of four parts: 1. A doubly-fed induction generator 2. A wind turbine emulator 3. A solar photovoltaic emulator, with battery energy storage 4. Distribution transformers, lines, and other components, and wireless and wired communications and control These lab elements will be interconnected and will function together to form a complete testbed for distributed resource monitoring and control strategies and smart grid applications testing. Development of the lab system will continue beyond this project.

  19. Accelerator Systems

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Accelerator Systems Accelerator Systems MaRIE will provide a capability to address the control of performance and production of weapons materials at the mesoscale. MaRIE fills a critical gap in length scale between the integral scale addressed by studies conducted at DARHT, U1a, NIF, and Z. CONTACT Richard Sheffield (505) 667-1237 Email Revolutionizing Microstructural Physics to Empower Nuclear Energy Realizing MaRIE's full suite of capabilities requires developing and integrating a suite of

  20. Commercialization of Medium Voltage HTS Triax TM Cable Systems

    SciTech Connect (OSTI)

    Knoll, David

    2012-12-31

    The original project scope that was established in 2007 aimed to install a 1,700 meter (1.1 mile) medium voltage HTS Triax{TM} cable system into the utility grid in New Orleans, LA. In 2010, however, the utility partner withdrew from the project, so the 1,700 meter cable installation was cancelled and the scope of work was reduced. The work then concentrated on the specific barriers to commercialization of HTS cable technology. The modified scope included long-length HTS cable design and testing, high voltage factory test development, optimized cooling system development, and HTS cable life-cycle analysis. In 2012, Southwire again analyzed the market for HTS cables and deemed the near term market acceptance to be low. The scope of work was further reduced to the completion of tasks already started and to testing of the existing HTS cable system in Columbus, OH. The work completed under the project included: Long-length cable modeling and analysis HTS wire evaluation and testing Cable testing for AC losses Optimized cooling system design Life cycle testing of the HTS cable in Columbus, OH Project management. The 200 meter long HTS Triax{TM} cable in Columbus, OH was incorporated into the project under the initial scope changes as a test bed for life cycle testing as well as the site for an optimized HTS cable cooling system. The Columbus cable utilizes the HTS TriaxTM design, so it provided an economical tool for these of the project tasks.

  1. Developing 226Ra and 227Ac age-dating techniques for nuclear forensics to gain insight from concordant and non-concordant radiochronometers

    SciTech Connect (OSTI)

    Kayzar, Theresa M.; Williams, Ross W.

    2015-09-26

    The model age or ‘date of purification’ of a nuclear material is an important nuclear forensic signature. In this study, chemical separation and MC-ICP-MS measurement techniques were developed for 226 Ra and 227Ac: grand-daughter nuclides in the 238U and 235U decay chains respectively. The 230Th-234U, 226Ra-238U, 231Pa-235U, and 227Ac-235U radiochronometers were used to calculate model ages for CRM-U100 standard reference material and two highly-enriched pieces of uranium metal from the International Technical Working Group Round Robin 3 Exercise. In conclusion, the results demonstrate the accuracy of the 226Ra-238U and 227Ac-235U chronometers and provide information about nuclide migration during uranium processing.

  2. Selection Tests of MnZn and NiZn Ferrites for Mu2e 300 kHz and 5.1 MHz AC Dipoles

    SciTech Connect (OSTI)

    Bourkland, K.; Elementi, L.; Feher, S.; Harding, D.J.; Kashikhin, V.S.; Makarov, A.; Pfeffer, H.; Velev, G.V.; Mulushev, E.; Iedmeska, I.; Venturini, M.; /Pisa U.

    2011-09-09

    Mu2e, a charged lepton flavor violation (CLFV) experiment is planned to start at Fermilab late in this decade. The proposed experiment will search for neutrinoless muon to electron conversions with unprecedented sensitivity, better than 6 x 10{sup -17 }at 90% CL. To achieve this sensitivity the incoming proton beam must be highly suppressed during the window for detecting the muon decays. The current proposal for beam extinction is based on a collimator design with two dipoles running at {approx}300 kHz and 5.1 MHz and synchronized to the proton bunch spacing. The appropriate choice of ferrite material for the magnet yoke is a critical step in the overall design of the dipoles and their reliable operation at such high frequencies over the life of the experiment. This choice, based on a series of the thermal and magnetic measurements of the ferrite samples, is discussed in the paper. Additionally, the first results from the testing at 300 kHz of a prototype AC dipole are presented.

  3. Support for a special symposium to highlight the research of early career women physical chemists at the 2011 fall ACS nationall meeting, Aug 28-Sept

    SciTech Connect (OSTI)

    Geraldine Richmond

    2012-12-19

    The symposium was well attended during the 4-day symposium. The invited speakers were primarily women in early career stage (~4-8 years) with a few senior women and men as invited speakers or session chairs. Included in each day was a Poster Session for graduate students and a lunch in which the turn out was strong and the posters presented encouraged much of dialogue with the invited speakers, guests and others attending the ACS meeting and wanted to discuss the student???????????????¢????????????????????????????????s research and meet with the speakers. Most all speakers and participants were very positive about the sessions and expressed that the funding to cover some expenses made it possible for them to attend the conference and the poster session luncheon. There was a total of 51 presenters, below are the speakers and their abstracts, in order presented:

  4. THE STAR FORMATION HISTORY OF THE VERY METAL-POOR BLUE COMPACT DWARF I Zw 18 FROM HST/ACS DATA

    SciTech Connect (OSTI)

    Annibali, F.; Cignoni, M.; Tosi, M.; Clementini, G.; Contreras Ramos, R.; Fiorentino, G.; Van der Marel, R. P.; Aloisi, A.; Marconi, M.; Musella, I.

    2013-12-01

    We have derived the star formation history (SFH) of the blue compact dwarf galaxy I Zw 18 through comparison of deep HST/ACS data with synthetic color-magnitude diagrams (CMDs). A statistical analysis was implemented for the identification of the best-fit SFH and relative uncertainties. We confirm that I Zw 18 is not a truly young galaxy, having started forming stars earlier than ?1 Gyr ago, and possibly at epochs as old as a Hubble time. In I Zw 18's main body we infer a lower limit of ?2 10{sup 6} M {sub ?} for the mass locked up in old stars. I Zw 18's main body has been forming stars very actively during the last ?10 Myr, with an average star formation rate (SFR) as high as ?1 M {sub ?} yr{sup 1} (or ?2 10{sup 5} M {sub ?} yr{sup 1} pc{sup 2}). On the other hand, the secondary body was much less active at these epochs, in agreement with the absence of significant nebular emission. The high current SFR can explain the very blue colors and the high ionized gas content in I Zw 18, resembling primeval galaxies in the early universe. Detailed chemical evolution models are required to quantitatively check whether the SFH from the synthetic CMDs can explain the low measured element abundances, or if galactic winds with loss of metals are needed.

  5. Systems Studies

    SciTech Connect (OSTI)

    Graham, R.L.

    1998-03-17

    The Systems Studies Activity had two objectives: (1) to investigate nontechnical barriers to the deployment of biomass production and supply systems and (2) to enhance and extend existing systems models of bioenergy supply and use. For the first objective, the Activity focused on existing bioenergy markets. Four projects were undertaken: a comparative analysis of bioenergy in Sweden and Austria; a one-day workshop on nontechnical barriers jointly supported by the Production Systems Activity; the development and testing of a framework for analyzing barriers and drivers to bioenergy markets; and surveys of wood pellet users in Sweden, Austria and the US. For the second objective, two projects were undertaken. First, the Activity worked with the Integrated BioEnergy Systems (TBS) Activity of TEA Bioenergy Task XIII to enhance the BioEnergy Assessment Model (BEAM). This model is documented in the final report of the IBS Activity. The Systems Studies Activity contributed to enhancing the feedstock portion of the model by developing a coherent set of willow, poplar, and switchgrass production modules relevant to both the US and the UK. The Activity also developed a pretreatment module for switchgrass. Second, the Activity sponsored a three-day workshop on modeling bioenergy systems with the objectives of providing an overview of the types of models used to evaluate bioenergy and promoting communication among bioenergy modelers. There were nine guest speakers addressing different types of models used to evaluate different aspects of bioenergy, ranging from technoeconomic models based on the ASPEN software to linear programming models to develop feedstock supply curves for the US. The papers from this workshop have been submitted to Biomass and Bioenergy and are under editorial review.

  6. ELECTRONIC SYSTEM

    DOE Patents [OSTI]

    Robison, G.H. et al.

    1960-11-15

    An electronic system is described for indicating the occurrence of a plurality of electrically detectable events within predetermined time intervals. It is comprised of separate input means electrically associated with the events under observation: an electronic channel associated with each input means including control means and indicating means; timing means associated with each of the input means and the control means and adapted to derive a signal from the input means and apply it after a predetermined time to the control means to effect deactivation of each of the channels; and means for resetting the system to its initial condition after observation of each group of events.

  7. Systems Modeling

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    You are here Home » Systems Integration Systems Integration Hawaii DREAMS of New Solar Technologies Hawaii DREAMS of New Solar Technologies Read more Plug and Play Solar PV for American Homes Plug and Play Solar PV for American Homes Read more Watt-Sun: A Multi-Scale, Multi-Modal, Machine-Learning Solar Forecasting Technology Watt-Sun: A Multi-Scale, Multi-Modal, Machine-Learning Solar Forecasting Technology Read more High PV Penetration with Energy Storage in Flagstaff, AZ High PV Penetration

  8. Systems Engineering

    Broader source: Energy.gov [DOE]

    Project objectives: to create an interactive, physics based, systems analysis tool for geothermal energy development that will: Identify points of attack to maximize efforts and investment dollars; Identify the parameter space where geothermal energy production is physically and economically viable; Provide a platform for public education and interaction.

  9. Fast switching, modular high-voltage DC/AC-power supplies for RF-Amplifiers and other applications

    SciTech Connect (OSTI)

    Alex, J.; Schminke, W. [Thomcast AG, Turgi (Switzerland)

    1995-12-31

    A new kind of high voltage high-power Pulse-Step Modulator (PSM) for broadcast transmitters, accelerator sources, for NBI (Neutral Beam Injection for Plasma Heating), gyrotrons and klystrons has been developed. Since its first introduction in 1984 for broadcast transmitters, more than 100 high-power sound broadcast transmitters had been equipped with the first generation of the PSM modulators, using Gate Turn-Off Thyristors (GTOs) as switching elements. Recently, due to faster switching elements and making use of the latest DSP technologies (Digital Signal Processing), the performance data and areas of application could be extended further. In 1994, a precision high voltage source for MW gyrotrons was installed at CRPP in Lausanne. Supplementary very low cost solutions for lower powers but high voltages had been developed. Hence, today, a large area of applications can be satisfied with the family of solutions. The paper describes the principle of operation, the related control systems and refers to some particular applications of the PSM amplifiers, especially the newest developments and corresponding field results.

  10. Spin force and the generation of sustained spin current in time-dependent Rashba and Dresselhaus systems

    SciTech Connect (OSTI)

    Ho, Cong Son Tan, Seng Ghee; Jalil, Mansoor B. A.

    2014-05-14

    The generation of spin current and spin polarization in a two-dimensional electron gas structure is studied in the presence of Dresselhaus and Rashba spin-orbit couplings (SOC), the strength of the latter being modulated in time by an ac gate voltage. By means of the non-Abelian gauge field approach, we established the relation between the Lorentz spin force and the spin current in the SOC system, and showed that the longitudinal component of the spin force induces a transverse spin current. For a constant (time-invariant) Rashba system, we recover the universal spin Hall conductivity of e/(8π) , derived previously via the Berry phase and semi-classical methods. In the case of a time-dependent SOC system, the spin current is sustained even under strong impurity scattering. We evaluated the ac spin current generated by a time-modulated Rashba SOC in the absence of any dc electric field. The magnitude of the spin current reaches a maximum when the modulation frequency matches the Larmor frequency of the electrons.

  11. DOE Fundamentals Handbook: Electrical Science, Volume 1

    SciTech Connect (OSTI)

    Not Available

    1992-06-01

    The Electrical Science Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of electrical theory, terminology, and application. The handbook includes information on alternating current (AC) and direct current (DC) theory, circuits, motors, and generators; AC power and reactive components; batteries; AC and DC voltage regulators; transformers; and electrical test instruments and measuring devices. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility electrical equipment.

  12. DOE Fundamentals Handbook: Electrical Science, Volume 4

    SciTech Connect (OSTI)

    Not Available

    1992-06-01

    The Electrical Science Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of electrical theory, terminology, and application. The handbook includes information on alternating current (AC) and direct current (DC) theory, circuits, motors, and generators; AC power and reactive transformers; and electrical test components; batteries; AC and DC voltage regulators; instruments and measuring devices. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility electrical equipment.

  13. DOE Fundamentals Handbook: Electrical Science, Volume 2

    SciTech Connect (OSTI)

    Not Available

    1992-06-01

    The Electrical Science Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding terminology, and application. The handbook includes information on alternating current (AC) and direct current (DC) theory, circuits, motors, and generators; AC power and reactive components; batteries; AC and DC voltage regulators; transformers; and electrical test instruments and measuring devices. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility electrical equipment.

  14. DOE Fundamentals Handbook: Electrical Science, Volume 3

    SciTech Connect (OSTI)

    Not Available

    1992-06-01

    The Electrical Science Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of electrical theory, terminology, and application. The handbook includes information on alternating current (AC) and direct current (DC) theory, circuits, motors and generators; AC power and reactive components; batteries; AC and DC voltage regulators; transformers; and electrical test instruments and measuring devices. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility electrical equipment.

  15. Burner systems

    DOE Patents [OSTI]

    Doherty, Brian J.

    1984-07-10

    A burner system particularly useful for downhole deployment includes a tubular combustion chamber unit housed within a tubular coolant jacket assembly. The combustion chamber unit includes a monolithic tube of refractory material whose inner surface defines the combustion zone. A metal reinforcing sleeve surrounds and extends the length of the refractory tube. The inner surface of the coolant jacket assembly and outer surface of the combustion chamber unit are dimensioned so that those surfaces are close to one another in standby condition so that the combustion chamber unit has limited freedom to expand with that expansion being stabilized by the coolant jacket assembly so that compression forces in the refractory tube do not exceed about one-half the safe compressive stress of the material; and the materials of the combustion chamber unit are selected to establish thermal gradient parameters across the combustion chamber unit to maintain the refractory tube in compression during combustion system start up and cool down sequences.

  16. Directives System

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1998-01-30

    The Department of Energy (DOE) Directives System is the means by which DOE policies, requirements, and responsibilities are developed and communicated throughout the Department. Directives are used to inform, direct, and guide employees in the performance of their jobs, and to enable employees to work effectively within the Department and with agencies, contractors, and the public. Cancels: DOE O 251.1, DOE M 251.1-1

  17. Monitoring Systems

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Systems - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs Advanced Nuclear Energy

  18. WEC system

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    system - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs Advanced Nuclear Energy

  19. Security system

    DOE Patents [OSTI]

    Baumann, Mark J.; Kuca, Michal; Aragon, Mona L.

    2016-02-02

    A security system includes a structure having a structural surface. The structure is sized to contain an asset therein and configured to provide a forceful breaching delay. The structure has an opening formed therein to permit predetermined access to the asset contained within the structure. The structure includes intrusion detection features within or associated with the structure that are activated in response to at least a partial breach of the structure.

  20. Gasification system

    DOE Patents [OSTI]

    Haldipur, Gaurang B.; Anderson, Richard G.; Cherish, Peter

    1983-01-01

    A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

  1. Gasification system

    DOE Patents [OSTI]

    Haldipur, Gaurang B.; Anderson, Richard G.; Cherish, Peter

    1985-01-01

    A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

  2. CONTROL SYSTEM

    DOE Patents [OSTI]

    Shannon, R.H.; Williamson, H.E.

    1962-10-30

    A boiling water type nuclear reactor power system having improved means of control is described. These means include provisions for either heating the coolant-moderator prior to entry into the reactor or shunting the coolantmoderator around the heating means in response to the demand from the heat engine. These provisions are in addition to means for withdrawing the control rods from the reactor. (AEC)

  3. Computer System,

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    System, Cluster, and Networking Summer Institute New Mexico Consortium and Los Alamos National Laboratory HOW TO APPLY Applications will be accepted JANUARY 5 - FEBRUARY 13, 2016 Computing and Information Technology undegraduate students are encouraged to apply. Must be a U.S. citizen. * Submit a current resume; * Offcial University Transcript (with spring courses posted and/or a copy of spring 2016 schedule) 3.0 GPA minimum; * One Letter of Recommendation from a Faculty Member; and * Letter of

  4. Braking system

    DOE Patents [OSTI]

    Norgren, D.U.

    1982-09-23

    A balanced braking system comprising a plurality of braking assemblies located about a member to be braked. Each of the braking assemblies consists of a spring biased piston of a first material fitted into a body of a different material which has a greater contraction upon cooling than the piston material. The piston is provided with a recessed head portion over which is positioned a diaphragm and forming a space therebetween to which is connected a pressurized fluid supply. The diaphragm is controlled by the fluid in the space to contact or withdraw from the member to be braked. A cooling means causes the body within which the piston is fitted to contract more than the piston, producing a tight shrink fit therebetween. The braking system is particularly applicable for selectively braking an arbor of an electron microscope which immobilizes, for example, a vertically adjustable low temperature specimen holder during observation. The system provides balanced braking forces which can be easily removed and re-established with minimal disturbance to arbor location.

  5. An SAR-compliant radionuclide inventory management system for a DOE research and development laboratory

    SciTech Connect (OSTI)

    O'Kula, K.R.; Lux, C.R.; Clements, J.A.

    2000-07-01

    The US Department of Energy Complex contains many laboratories that require inventory management and control of large stores of radionuclides. While the overall quantities of radionuclides are bounded by Authorization-Basis (AB) documents, the spatial distribution may change rapidly according to facility experimentation and storage limits. Thus, the consequences of postulated accident events may be difficult to quantify as the location of radiological species becomes uncertain. Furthermore, a situation of this nature may be compounded by management of fissile materials in the same laboratory. Although radionuclide inventory management, fissile material control, and compliance with AB limits may be handled individually, a systematic and consistent approach would be to integrate all three functions. A system with these characteristics, an upgraded Radionuclide Inventory and Administrative Control (RI-AC) System, has been implemented for the Savannah River Technology Center (SRTC) located on the Savannah River Site (SRS), and is summarized in this paper.

  6. NREL: Energy Systems Integration - Systems Integration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    High-level system integration New distribution scenarios such as household DC systems and residential-scale generation and storage integrated with home energy management systems. ...

  7. Refrigeration system

    SciTech Connect (OSTI)

    Pagani, R.F.; Clarke, K.J.; Avon, E.J.

    1986-11-11

    This patent describes a chamber including an expandable refrigerant system associated therewith. The system comprises reservoir containing an expandable refrigerant coolant and lead piping connecting the reservoir to conduits carrying the coolant therein. The chamber comprises top, bottom and side walls, accordingly defining an interior and an exterior to the chamber, one of the walls comprises a door affording access into the chamber, each of the walls being insulated with insulating material. At least one of the walls comprises a first layer of the insulating material extending thereover adjacent the exterior and a second layer of the insulating material extending thereover adjacent the interior. The reservoir, lead piping and conduits are disposed intermediate the first and second layers of insulating material thereby isolating them from both the interior and exterior. Heat transferring through the at least one wall is substantially absorbed by the coolant and the insulating material cooled by the coolant, before it is able to penetrate through the at least one wall, permitting a product placed in the chamber to effectively maintain or substantially maintain a selected even temperature.

  8. A POSITIONAL DATA SYSTEM

    DOE Patents [OSTI]

    Forster, G.A.

    1963-09-24

    between master and slave synchros is described. A threephase a-c power source is connected to the stators of the synchros and an error detector is connected to the rotors of the synchros to measure the phasor difference therebetween. A phase shift network shifts the phase of one of the rotors 90 degrees and a demodulator responsive thereto causes the phasor difference signal of the rotors to shift phase 180 degrees whenever the 90 degree phase shifted signal goes negative. The phase shifted difference signal has a waveform which, with the addition of small values of resistance and capacitance, gives a substantially pure d-c output whose amplitude and polarity is proportional to the magnitude and direction of the difference in the angular positions of the synchro's rotors. (AEC)

  9. NREL: Energy Systems Integration Facility - Systems Integration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Systems Integration Systems integration considers the relationships among electricity, thermal, and fuel systems and data and information networks to ensure optimal interoperability across the energy spectrum. The Energy Systems Integration Facility's suite of systems integration laboratories provides advanced capabilities for research, development, and demonstration of key components of future energy systems. Photo of a man and a power quality meter system in a laboratory. The Energy Systems

  10. Intelligent Transportation Systems Deployment Analysis System...

    Open Energy Info (EERE)

    Transportation Systems Deployment Analysis System AgencyCompany Organization: Cambridge Systematics Sector: Energy Focus Area: Transportation Resource Type: Software...

  11. Power Systems Engineering

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    systems; steam, water, fuel, and environmental monitoring systems; alternative energy systems; reliability, availability, and maintainability assessments; and associated...

  12. Investigation of magnetic spin glass property in La{sub 0.5}Bi{sub 0.5}MnO{sub 3} sample using non-linear AC susceptibility measurements

    SciTech Connect (OSTI)

    Kumar, Punith V. Manju, M. R. Dayal, Vijaylakshmi

    2014-04-24

    We present a comprehensive study on origin of Spin Glass (SG) property in polycrystalline La{sub 0.5}Bi{sub 0.5}MnO{sub 3} perovskite oxide using linear and higher order ac susceptibility (χ) measurements. The third order harmonic susceptibility (χ{sub 3}) vs. temperature (K) with varying magnetic fields from 0.95 to 9.45 Oe and the divergence in their χ{sub 3} (max) allows us to infer the SG behavior occurring in the sample possibly due to co-operative freezing of the spins.

  13. Transfer system

    DOE Patents [OSTI]

    Kurosawa, Kanji; Koga, Bunichiro; Ito, Hideki; Kiriyama, Shigeru; Higuchi, Shizuo

    2003-05-20

    A transport system includes a traveling rail (1) which constitutes a transport route and a transport body (3) which is capable of traveling on the traveling rail in the longitudinal direction of the traveling rail. Flexible drive tubes (5) are arranged on the traveling rail in the longitudinal direction of the traveling rail. The transport body includes a traveling wheel (4) which is capable of rolling on the traveling rail and drive wheels (2) which are capable of rolling on the drive tubes upon receiving the rotational drive power generated by pressure of a pressure medium supplied to the drive tubes while depressing the drive tubes. The traveling rail includes a plurality of transport sections and the transport body is capable of receiving a rotational drive force from the drive tubes at every transport sections. If necessary, a transport route changeover switch which changes over the transport route can be provided between the transport sections.

  14. A Bidirectional High-Power-Quality Grid Interface With a Novel Bidirectional Noninverted Buck Boost Converter for PHEVs

    SciTech Connect (OSTI)

    Onar, Omer C

    2012-01-01

    Plug-in hybrid electric vehicles (PHEVs) will play a vital role in future sustainable transportation systems due to their potential in terms of energy security, decreased environmental impact, improved fuel economy, and better performance. Moreover, new regulations have been established to improve the collective gas mileage, cut greenhouse gas emissions, and reduce dependence on foreign oil. This paper primarily focuses on two major thrust areas of PHEVs. First, it introduces a grid-friendly bidirectional alternating current/direct current ac/dc dc/ac rectifier/inverter for facilitating vehicle-to-grid (V2G) integration of PHEVs. Second, it presents an integrated bidirectional noninverted buck boost converter that interfaces the energy storage device of the PHEV to the dc link in both grid-connected and driving modes. The proposed bidirectional converter has minimal grid-level disruptions in terms of power factor and total harmonic distortion, with less switching noise. The integrated bidirectional dc/dc converter assists the grid interface converter to track the charge/discharge power of the PHEV battery. In addition, while driving, the dc/dc converter provides a regulated dc link voltage to the motor drive and captures the braking energy during regenerative braking.

  15. Separation system

    DOE Patents [OSTI]

    Rubin, Leslie S.

    1986-01-01

    A separation system for dewatering radioactive waste materials includes a disposal container, drive structure for receiving the container, and means for releasably attaching the container to the drive structure. Separation structure disposed in the container adjacent the inner surface of the side wall structure retains solids while allowing passage of liquids. Inlet port structure in the container top wall is normally closed by first valve structure that is centrifugally actuated to open the inlet port and discharge port structure at the container periphery receives liquid that passes through the separation structure and is normally closed by second valve structure that is centrifugally actuated to open the discharge ports. The container also includes coupling structure for releasable engagement with the centrifugal drive structure. Centrifugal force produced when the container is driven in rotation by the drive structure opens the valve structures, and radioactive waste material introduced into the container through the open inlet port is dewatered, and the waste is compacted. The ports are automatically closed by the valves when the container drum is not subjected to centrifugal force such that containment effectiveness is enhanced and exposure of personnel to radioactive materials is minimized.

  16. ac_household2001.pdf

    U.S. Energy Information Administration (EIA) Indexed Site

    Type of Housing Unit RSE Row Factors Single-Family Apartments in Buildings With Mobile ... Type of Housing Unit RSE Row Factors Single-Family Apartments in Buildings With Mobile ...

  17. ac_household2001.pdf

    U.S. Energy Information Administration (EIA) Indexed Site

    Type of Owner-Occupied Housing Unit RSE Row Factors Single-Family Apartments in Buildings ... Type of Owner-Occupied Housing Unit RSE Row Factors Single-Family Apartments in Buildings ...

  18. ac_household2001.pdf

    U.S. Energy Information Administration (EIA) Indexed Site

    Type of Rented Housing Unit RSE Row Factors Single-Family Apartments in Buildings With ... Type of Rented Housing Unit RSE Row Factors Single-Family Apartments in Buildings With ...

  19. Low frequency ac waveform generator

    DOE Patents [OSTI]

    Bilharz, O.W.

    1983-11-22

    Low frequency sine, cosine, triangle and square waves are synthesized in circuitry which allows variation in the waveform amplitude and frequency while exhibiting good stability and without requiring significant stablization time. A triangle waveform is formed by a ramped integration process controlled by a saturation amplifier circuit which produces the necessary hysteresis for the triangle waveform. The output of the saturation circuit is tapped to produce the square waveform. The sine waveform is synthesized by taking the absolute value of the triangular waveform, raising this absolute value to a predetermined power, multiplying the raised absolute value of the triangle wave with the triangle wave itself and properly scaling the resultant waveform and subtracting it from the triangular waveform to a predetermined power and adding the squared waveform raised to the predetermined power with a DC reference and subtracting the squared waveform therefrom, with all waveforms properly scaled. The resultant waveform is then multiplied with a square wave in order to correct the polarity and produce the resultant cosine waveform.

  20. Low frequency AC waveform generator

    DOE Patents [OSTI]

    Bilharz, Oscar W.

    1986-01-01

    Low frequency sine, cosine, triangle and square waves are synthesized in circuitry which allows variation in the waveform amplitude and frequency while exhibiting good stability and without requiring significant stabilization time. A triangle waveform is formed by a ramped integration process controlled by a saturation amplifier circuit which produces the necessary hysteresis for the triangle waveform. The output of the saturation circuit is tapped to produce the square waveform. The sine waveform is synthesized by taking the absolute value of the triangular waveform, raising this absolute value to a predetermined power, multiplying the raised absolute value of the triangle wave with the triangle wave itself and properly scaling the resultant waveform and subtracting it from the triangular waveform itself. The cosine is synthesized by squaring the triangular waveform, raising the triangular waveform to a predetermined power and adding the squared waveform raised to the predetermined power with a DC reference and subtracting the squared waveform therefrom, with all waveforms properly scaled. The resultant waveform is then multiplied with a square wave in order to correct the polarity and produce the resultant cosine waveform.