Sample records for wecc wecc-us ac

  1. WECC and Peak Update

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

    WECC and Peak Update Transmission B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Pre-decisional. For Discussion Purposes Only. WECC and Peak Background In the...

  2. WECC Variable Generation Planning Reference Book

    SciTech Connect (OSTI)

    Makarov, Yuri V.; Du, Pengwei; Etingov, Pavel V.; Ma, Jian; Vyakaranam, Bharat

    2013-05-14T23:59:59.000Z

    This planning reference book is a document reflecting a Western Electricity Coordination Council (WECC) effort to put together multiple sources of information and provide a clear, systemic, comprehensive outline of the problems, both existing and anticipated; their impacts on the system; currently used and proposed solutions by the industry and research community; planning practices; new technologies, equipment, and standards; and expected future trends. This living (periodically updated) document could help WECC and other practicing engineers, especially the younger generation of engineers joining the workforce, to get familiar with a large variety of information related to the integration of variable resources into the WECC system, bypassing in part the need for time-consuming information gathering and learning processes from more experienced engineers or from the literature.

  3. WECC Response to DOE Quadrennial Energy Review

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradley Nickell Director of Transmission Planning - WECC WesternWECC

  4. WECC Report 1/98 An Integrated Criterion for the

    E-Print Network [OSTI]

    Wania, Frank

    WECC Report 1/98 An Integrated Criterion for the Persistence of Organic Chemicals Based on Model Science Department of the Procter & Gamble Company, Cincinnati, Ohio, U.S.A. WECC Wania Environmental-416-977-4953, E-mail: frank.wania@utoronto.ca #12;WECC Report 1/98 2 Table of Contents Some Introductory Thoughts

  5. WECC 10-Year Plan general presentation

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradley Nickell Director of Transmission Planning - WECC Western

  6. WECC Variable Generation Planning Reference Book: Appendices

    SciTech Connect (OSTI)

    Makarov, Yuri V.; Du, Pengwei; Etingov, Pavel V.; Ma, Jian; Vyakaranam, Bharat

    2013-05-13T23:59:59.000Z

    The document titled “WECC Variable Generation Planning Reference Book”. This book is divided into two volumes; one is the main document (volume 1)and the other is appendices (volume 2). The main document is a collection of the best practices and the information regarding the application and impact of variables generation on power system planning. This volume (appendices) has additional information on the following topics: Probabilistic load flow problems. 2. Additional useful indices. 3. high-impact low-frequency (HILF) events. 4. Examples of wide-area nomograms. 5. Transmission line ratings, types of dynamic rating methods. 6. Relative costs per MW-km of different electric power transmission technologies. 7. Ultra-high voltage (UHV) transmission. 8.High voltage direct current (VSC-HVDC). 9. HVDC. 10. Rewiring of existing transmission lines. 11. High-temperature low sag (HTLS) conductors. 12. The direct method and energy functions for transient stability analysis in power systems. 13.Blackouts caused by voltage instability. 14. Algorithm for parameter continuation predictor-corrector methods. 15. Approximation techniques available for security regions. 16. Impacts of wind power on power system small signals stability. 17. FIDVR. 18. FACTS. 19. European planning standard and practices. 20. International experience in wind and solar energy sources. 21. Western Renewable Energy Zones (WREZ). 22. various energy storage technologies. 23. demand response. 24. BA consolidation and cooperation options. 25. generator power management requirements and 26. European planning guidelines.

  7. WECC releases its first-ever transmission plan for the Western Interconnection

    Broader source: Energy.gov [DOE]

    The Western Electricity Coordinating Council (WECC) announced the release of its first 10-Year Regional Transmission Plan (Plan) for the Western Interconnection.

  8. Estimation of the WECC System Inertia Using Observed Frequency Transients

    E-Print Network [OSTI]

    David P. Chassin; Zhenyu Huang; Matthew K. Donnelly; Candee Hassler; Enrique Ramirez; Cody Ray

    2004-12-28T23:59:59.000Z

    Computer models being developed to understand the interaction between demand-response technology, power system deregulation and market transformation depend in part on understanding the relationship between system frequency and load-control. Frequency, load, and plant outage events data collected over the last several years have permitted analysis to determine the Western Electricity Coordination Council (WECC) system's inertia during each event. This data was used to evaluate the relationship of system inertia to total load, which is used to model system response to load curtailment programs in next generation power system simulations.

  9. Energy-water analysis of the 10-year WECC transmission planning study cases.

    SciTech Connect (OSTI)

    Tidwell, Vincent Carroll; Passell, Howard David; Castillo, Cesar; Moreland, Barbara

    2011-11-01T23:59:59.000Z

    In 2011 the Department of Energy's Office of Electricity embarked on a comprehensive program to assist our Nation's three primary electric interconnections with long term transmission planning. Given the growing concern over water resources in the western U.S. the Western Electricity Coordinating Council (WECC) requested assistance with integrating water resource considerations into their broader electric transmission planning. The result is a project with three overarching objectives: (1) Develop an integrated Energy-Water Decision Support System (DSS) that will enable planners in the Western Interconnection to analyze the potential implications of water stress for transmission and resource planning. (2) Pursue the formulation and development of the Energy-Water DSS through a strongly collaborative process between the Western Electricity Coordinating Council (WECC), Western Governors Association (WGA), the Western States Water Council (WSWC) and their associated stakeholder teams. (3) Exercise the Energy-Water DSS to investigate water stress implications of the transmission planning scenarios put forward by WECC, WGA, and WSWC. The foundation for the Energy-Water DSS is Sandia National Laboratories Energy-Power-Water Simulation (EPWSim) model (Tidwell et al. 2009). The modeling framework targets the shared needs of energy and water producers, resource managers, regulators, and decision makers at the federal, state and local levels. This framework provides an interactive environment to explore trade-offs, and 'best' alternatives among a broad list of energy/water options and objectives. The decision support framework is formulated in a modular architecture, facilitating tailored analyses over different geographical regions and scales (e.g., state, county, watershed, interconnection). An interactive interface allows direct control of the model and access to real-time results displayed as charts, graphs and maps. The framework currently supports modules for calculating water withdrawal and consumption for current and planned electric power generation; projected water demand from competing use sectors; and, surface and groundwater availability. WECC's long range planning is organized according to two target planning horizons, a 10-year and a 20-year. This study supports WECC in the 10-year planning endeavor. In this case the water implications associated with four of WECC's alternative future study cases (described below) are calculated and reported. In future phases of planning we will work with WECC to craft study cases that aim to reduce the thermoelectric footprint of the interconnection and/or limit production in the most water stressed regions of the West.

  10. Analysis of the Impact of Balancing Area Cooperation on the Operation of WECC and the Compounding Effect of Wind and Solar Generation

    SciTech Connect (OSTI)

    Jordan, G.; Piwko, D.

    2013-02-01T23:59:59.000Z

    It is the intent of this analysis to examine the operational benefits of increased cooperation between a large number of WECC operating regions.

  11. Use of the WECC WAMS in Wide Area Probing Tests for Validation of System Performance & Modeling

    SciTech Connect (OSTI)

    Hauer, John F.; Mittelstadt, William; Martin, Kenneth E.; Burns, J. W.; Lee, Harry; Pierre, John W.; Trudnowski, Daniel

    2009-02-01T23:59:59.000Z

    During 2005 and 2006 the Western Electricity Coordinating Council (WECC) performed three major tests of western system dynamics. These tests used a Wide Area Measurement System (WAMS) based primarily on Phasor Measurement Units (PMUs) to determine response to events including the insertion of the 1400-MW Chief Joseph braking resistor, probing signals, and ambient events. Test security was reinforced through real-time analysis of wide area effects, and high-quality data provided dynamic profiles for interarea modes across the entire western interconnection. The tests established that low-level optimized pseudo-random ±20-MW probing with the Pacific DC Intertie (PDCI) roughly doubles the apparent noise that is natural to the power system, providing sharp dynamic information with negligible interference to system operations. Such probing is an effective alternative to use of the 1400-MW Chief Joseph dynamic brake, and it is under consideration as a standard means for assessing dynamic security.

  12. Review of the WECC EDT phase 2 EIM benefits analysis and results report.

    SciTech Connect (OSTI)

    Veselka, T.D.; Poch, L.A.; Botterud, A. (Decision and Information Sciences)

    2012-04-05T23:59:59.000Z

    A region-wide Energy Imbalance Market (EIM) was recently proposed by the Western Electricity Coordinating Council (WECC). In order for the Western Area Power Administration (Western) to make more informed decisions regarding its involvement in the EIM, Western asked Argonne National Laboratory (Argonne) to review the EIM benefits study (the October 2011 revision) performed by Energy and Environmental Economics, Inc. (E3). Key components of the E3 analysis made use of results from a study conducted by the National Renewable Energy Laboratory (NREL); therefore, we also reviewed the NREL work. This report examines E3 and NREL methods and models used in the EIM study. Estimating EIM benefits is very challenging because of the complex nature of the Western Interconnection (WI), the variability and uncertainty of renewable energy resources, and the complex decisions and potentially strategic bidding of market participants. Furthermore, methodologies used for some of the more challenging aspects of the EIM have not yet matured. This review is complimentary of several components of the EIM study. Analysts and modelers clearly took great care when conducting detailed simulations of the WI using well-established industry tools under stringent time and budget constraints. However, it is our opinion that the following aspects of the study and the interpretation of model results could be improved upon in future analyses. The hurdle rate methodology used to estimate current market inefficiencies does not directly model the underlying causes of sub-optimal dispatch and power flows. It assumes that differences between historical flows and modeled flows can be attributed solely to market inefficiencies. However, flow differences between model results and historical data can be attributed to numerous simplifying assumptions used in the model and in the input data. We suggest that alternative approaches be explored in order to better estimate the benefits of introducing market structures like the EIM. In addition to more efficient energy transactions in the WI, the EIM would reduce the amount of flexibility reserves needed to accommodate forecast errors associated with variable production from wind and solar energy resources. The modeling approach takes full advantage of variable resource diversity over the entire market footprint, but the projected reduction in flexibility reserves may be overly optimistic. While some reduction would undoubtedly occur, the EIM is only an energy market and would therefore not realize the same reduction in reserves as an ancillary services market. In our opinion the methodology does not adequately capture the impact of transmission constraints on the deployment of flexibility reserves. Estimates of flexibility reserves assume that forecast errors follow a normal distribution. Improved estimates could be obtained by using other probability distributions to estimate up and down reserves to capture the underlying uncertainty of these resources under specific operating conditions. Also, the use of a persistence forecast method for solar is questionable, because solar insolation follows a deterministic pattern dictated by the sun's path through the sky. We suggest a more rigorous method for forecasting solar insolation using the sun's relatively predictable daily pattern at specific locations. The EIM study considered only one scenario for hydropower resources. While this scenario is within the normal range over the WI footprint, it represents a severe drought condition in the Colorado River Basin from which Western schedules power. Given hydropower's prominent role in the WI, we recommend simulating a range of hydropower conditions since the relationship between water availability and WI dispatch costs is nonlinear. Also, the representation of specific operational constraints faced by hydropower operators in the WI needs improvements. The model used in the study cannot fully capture all of the EIM impacts and complexities of power system operations. In particular, a primary benefit of the EIM is a shorter dispa

  13. Table of Contents Page 1 NERC 2007 Long-Term Reliability Assessment

    E-Print Network [OSTI]

    ..........................................................................................................................................................................35 WECC

  14. english 31AC african-amercan studies 17AC history 7B public health 130AC sociology 3AC education 30AC ethnic studies 135AC geography 150AC history 127AC information 142AC psychology 125AC anthropology 2AC american

    E-Print Network [OSTI]

    Alvarez-Cohen, Lisa

    · anthropology 2AC · american studies 10AC · gender and womens studies 50AC · music 26AC · spanish 135AC 50AC · music 26AC · spanish 135AC · sociology 190AC · public policy 117AC · peace and conflict studies 10AC · gender and womens studies 50AC · music 26AC · spanish 135AC · sociology 190AC · public

  15. 3.3.3AC Sweep AC . AC

    E-Print Network [OSTI]

    ­. DC ­ AC ­) .( . ­ ,, '­Spice .Spice . : 0 0 E1 PWR(V(%IN+, %IN . )2.3( Etable " . . : 00 V1 0Vdc E2 Pwr(V(%IN+, %IN-),2) ETABLE TABLE = (5

  16. Design and analysis of modern three-phase AC/AC power converters for AC drives and utility interface 

    E-Print Network [OSTI]

    Kwak, Sangshin

    2005-08-29T23:59:59.000Z

    Significant advances in modern ac/ac power converter technologies and demands of industries have reached beyond standard ac/ac power converters with voltage-source inverters fed from diode rectifiers. Power electronics converters have been matured...

  17. Ac-Ac Dual Active Bridge Converter for Solid State Transformer

    E-Print Network [OSTI]

    Kimball, Jonathan W.

    flow. The advantages of direct ac-ac conversion include fewer power conversion stages and minimized single-stage direct ac-ac power conversion to an SST. Fewer conversion stages reduce conduction loss) converter in direct ac-ac power conversion. Like a DAB converter as dc-dc power supply in [5] and [6

  18. AC and DC power transmission

    SciTech Connect (OSTI)

    Not Available

    1985-01-01T23:59:59.000Z

    The technical and economic assessment of AC and DC transmission systems; long distance transmission, cable transmission, system inter-connection, voltage support, reactive compensation, stabilisation of systems; parallel operation of DC links with AC systems; comparison between alternatives for particular schemes. Design and application equipment: design, testing and application of equipment for HVDC, series and shunt static compensated AC schemes, including associated controls. Installations: overall design of stations and conductor arrangements for HVDC, series and shunt static AC schemes including insulation co-ordination. System analysis and modelling.

  19. SWITCH-WECC Data, Assumptions, and Model Formulation

    E-Print Network [OSTI]

    Kammen, Daniel M.

    ....................................................................................... 5 1.3 Cost and Fuel Price Inputs........................................................... 20 2.7 Fuel Prices ............................................................................................................. 20 2.8 Biomass Solid Supply Curve

  20. Estimation of WECC System Inertia Using Observed Frequency Transients

    SciTech Connect (OSTI)

    Chassin, David P.; Huang, Zhenyu; Donnelly, Matt K.; Hassler, Candee A.; Ramirez, Enrique; Ray, Cody W.

    2005-04-19T23:59:59.000Z

    As demand for electricity in the western United States increases, stresses upon the aging power grid are intensifying. Computer models based on complex mathematical relationships are being developed to assist in understanding the impact of deregulation and market transformation. Frequency, load, and plant outage events data collected over the last several years. Analysis of these events was performed to determine frequency deviation and the systems inertial constant (M) during each event. Utilizing a theoretical relationship that relates system inertia to power loss, M was calculated for 157 events. The relationship of M to system wide load was then examined.

  1. SWITCH-WECC http://rael.berkeley.edu/switch

    E-Print Network [OSTI]

    Kammen, Daniel M.

    -synchronized demand, wind output, and solar output data per investment period · Linearized unit-commitment #12; and solar power in California. Ph.D. Dissertation, University of California, Berkeley, Energy and Resources., 2013. SunShot solar power reduces costs and uncertainty in future low-carbon electricity systems

  2. Property:EIA/861/NercWecc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal PwerPerkins County, Nebraska:PrecourtOid Jump to: navigation,AltFuelVehicle2 JumpNercSerc

  3. ACS | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1 WindtheEnergySulfonate as aAAB AsiaABEEolicaSection Logo:ACS

  4. ACS Symposium Program

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032)8Li (59AJ76) (See the EnergyTAMANG, APIL. A Multilevel224th ACS

  5. AC Resistance measuring instrument

    DOE Patents [OSTI]

    Hof, Peter J. (Richland, WA)

    1983-01-01T23:59:59.000Z

    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.

  6. AC resistance measuring instrument

    DOE Patents [OSTI]

    Hof, P.J.

    1983-10-04T23:59:59.000Z

    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.

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

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

    Aerovironment AC Level 2 - February 2012 More Documents & Publications AVTA: Clipper Creek AC Level 2 Charging System Testing Results AVTA: Eaton AC Level 2 Charging System...

  8. Exchange 13/14 www.ed.ac.uk

    E-Print Network [OSTI]

    Herrmann, Samuel

    : Studyabroad@ed.ac.uk Outgoing Students: Sharyn Bennet Email: Erasmus.outgoing@ed.ac.uk Head of Study Abroad

  9. ACS SYMPOSIUM SERIES 966 Rational Environmental

    E-Print Network [OSTI]

    Hammock, Bruce D.

    ACS SYMPOSIUM SERIES 966 Rational Environmental Management of Agrochemicals Risk Assessment-Bayo, Editor Chiha University Sponsored by the ACS Division of Agrochemicals American Chemical Society of agrochemicals : risk assessment, monitoring, and remedial action / Ivan R. Kennedy, editor. ..[et al

  10. Web https://ms.ecc.utokyo.ac.jp/ (POP) popd.ecc.utokyo.ac.jp

    E-Print Network [OSTI]

    Katsumoto, Shingo

    ; 2 233 #12; (POP) popd.ecc.utokyo.ac.jp SSL995 (IMAP) imapd.ecc.utokyo.ac.jp SSL993 sbmsd.ecc.utokyo.ac.jp SSL465 @ 1. MailHosting D 2. 200MB 400MB 3. POPIMAP IMAPPOP 200MB400MB 3 233 #12;Thunderbird 3 4 233 #12; (POP) popd.ecc.utokyo.ac.jp SSL995 (IMAP) imapd.ecc.utokyo.ac.jp SSL993

  11. Analysis and design of a direct AC to AC matrix converter topology

    E-Print Network [OSTI]

    Choi, Sewan

    1992-01-01T23:59:59.000Z

    - eration. With the advent of the thyristor and more recent devices such as the Metal oxided semiconductor field effect transistor(MOSI'ET), the Insulated gate bipolar transistor(IGBT) and the MOS controlled thyristor(MCT), it has become increas- ingly... commutated devices such as OTO's, IGBT's, IVIOSFET's and MCT's. The principle of forced commutation is used in clirect ac to ac matrix converter which is described in the next section. B. Direct AC to AC Matrix Converter Direct ac to ac matrix converters...

  12. Soft switched high frequency ac-link converter 

    E-Print Network [OSTI]

    Balakrishnan, Anand Kumar

    2009-05-15T23:59:59.000Z

    topology for medium and high power ac-ac, ac-dc and dc-ac applications. An ac-link formed by an inductor-capacitor pair replaces the conventional dc-link. Each leg of the converter is formed by two bidirectional switches. Power transfer from input to output...

  13. RHIC spin flipper AC dipole controller

    SciTech Connect (OSTI)

    Oddo, P.; Bai, M.; Dawson, C.; Gassner, D.; Harvey, M.; Hayes, T.; Mernick, K.; Minty, M.; Roser, T.; Severino, F.; Smith, K.

    2011-03-28T23:59:59.000Z

    The RHIC Spin Flipper's five high-Q AC dipoles which are driven by a swept frequency waveform require precise control of phase and amplitude during the sweep. This control is achieved using FPGA based feedback controllers. Multiple feedback loops are used to and dynamically tune the magnets. The current implementation and results will be presented. Work on a new spin flipper for RHIC (Relativistic Heavy Ion Collider) incorporating multiple dynamically tuned high-Q AC-dipoles has been developed for RHIC spin-physics experiments. A spin flipper is needed to cancel systematic errors by reversing the spin direction of the two colliding beams multiple times during a store. The spin flipper system consists of four DC-dipole magnets (spin rotators) and five AC-dipole magnets. Multiple AC-dipoles are needed to localize the driven coherent betatron oscillation inside the spin flipper. Operationally the AC-dipoles form two swept frequency bumps that minimize the effect of the AC-dipole dipoles outside of the spin flipper. Both AC bumps operate at the same frequency, but are phase shifted from each other. The AC-dipoles therefore require precise control over amplitude and phase making the implementation of the AC-dipole controller the central challenge.

  14. High frequency AC power converter for low voltage circuits

    E-Print Network [OSTI]

    Salazar, Nathaniel Jay Tobias

    2012-01-01T23:59:59.000Z

    This thesis presents a novel AC power delivery architecture that is suitable for VHF frequency (50-100MHz) polyphase AC/DC power conversion in low voltage integrated circuits. A complete AC power delivery architecture was ...

  15. Alamouti {yjdong, sky6174}@ccl.snu.ac.kr, jsno@snu.ac.kr, djshin@hanyang.ac.kr

    E-Print Network [OSTI]

    No, Jong-Seon

    @snu.ac.kr, djshin@hanyang.ac.kr (soft-decision-and-forward: SDF) . SDF . Alamouti , . (amplify-and-forward: AF) . , SDF AF . 1. . (source: S-decision-and-forward: SDF) . SDF R S phase, phase 1 phase 2 . Phase 1, S R D , phase 2 R D . , S D

  16. AC Transit | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of1 A Strategic Framework for SMRA View from the-1AssessmentAC

  17. ac magnetohydrodynamic microfluidic: Topics by E-print Network

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

    Keywords: electrokinetics, AC Electro-osmosis (ACEO); electrode polarization; microfluidics. 1. Introduction During recent years, AC electro-osmosis (ACEO) has emerged as a...

  18. ac iontophoretic transport: Topics by E-print Network

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

    Keywords: electrokinetics, AC Electro-osmosis (ACEO); electrode polarization; microfluidics. 1. Introduction During recent years, AC electro-osmosis (ACEO) has emerged as a...

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

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

    electric vehicles. This research was conducted by Idaho National Laboratory. Clipper Creek AC Level 2 - February 2012 More Documents & Publications AVTA: Aerovironment AC Level...

  20. ac traction drives: Topics by E-print Network

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

    Solid State Transformer Engineering Websites Summary: converters as distribution transformers 1. A power electronics-based solid state transformer (SST) providesAc-Ac Dual...

  1. www.accommodation.salford.ac.uk Accommodation

    E-Print Network [OSTI]

    Romano, Daniela

    sets out the main elements of good management practice. It covers health and safety, maintenancewww.accommodation.salford.ac.uk Accommodation Guide to University and University partner accommodation #12;32 www.accommodation.salford.ac.ukA guide to University and Partner accommodation Welcome

  2. (5202) e-mail: takasaki.midori@ocha.ac.jp (5201) e-mail: iwasaki.ogihara.chizuru@ocha.ac.jp

    E-Print Network [OSTI]

    Matsuzaki, Katsuhiko

    .chika@ocha.ac.jp = (5215) e-mail: schwartz.laure@ocha.ac.jp (5182) e-mail: kanda.yutsuki@ocha.ac.jp (5181) e

  3. www.mmu.ac.uk/careers Careers & Employability Service

    E-Print Network [OSTI]

    .mmu.ac.uk/careers Identifying courses · www.prospects.ac.uk/search_courses.htm · www.jobs.ac.uk · www.Findamasters.com · www.mmu.ac.uk/careers PG Professional/Vocational courses: Courses to allow you to enter certain professions Courses involve lectures for the first two terms then a research project for the final term (often finishing after

  4. Three phase AC motor controller

    DOE Patents [OSTI]

    Vuckovich, Michael (Elizabeth, PA); Wright, Maynard K. (Bethel Park, PA); Burkett, John P. (South Huntington Township, Westmoreland County, PA)

    1984-03-20T23:59:59.000Z

    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.

  5. 851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161

    E-Print Network [OSTI]

    Electricity Coordinating Council (WECC). WECC has been relatively successful in developing 10 (and soon 20

  6. Effects of Temporal Wind Patterns on the Value of Wind-Generated Electricity in California and the Northwest

    E-Print Network [OSTI]

    Wiser, Ryan H

    2008-01-01T23:59:59.000Z

    Laboratory, private communi- cation, March 12, 2004. WECC, "WECC 2006 Power Supply Assessment," Western Electricity

  7. Cinema 16 Collection / A.C. Killip (collector)

    E-Print Network [OSTI]

    Handy, Todd C.

    Cinema 16 Collection / A.C. Killip (collector) University of British Columbia Archives #12;Table;Collection Description Cinema 16 Collection / A.C. Killip (collector). ­ 1961-1970. 1.5 cm of textual records

  8. WASEDAUNIVERSITY http://www.sci.waseda.ac.jp

    E-Print Network [OSTI]

    Kasahara, Hironori

    ://www.cse.sci.waseda.ac.jp/ http://www.ase.sci.waseda.ac.jp/ http://www.waseda.jp/ips/ http://www.waseda.jp/weee/ INDEX 2014 5

  9. STATE OF CALIFORNIA DISTRIBUTED ENERGY STORAGE DX AC SYSTEMES ACCEPTANCE

    E-Print Network [OSTI]

    STATE OF CALIFORNIA DISTRIBUTED ENERGY STORAGE DX AC SYSTEMES ACCEPTANCE CEC-MECH-14A (Revised 08/09) CALIFORNIA ENERGY COMMISSION CERTIFICATE OF ACCEPTANCE MECH-14A NA7.5.13 Distributed Energy Storage DX AC DISTRIBUTED ENERGY STORAGE DX AC SYSTEMES ACCEPTANCE CEC-MECH-14A (Revised 08/09) CALIFORNIA ENERGY COMMISSION

  10. www.pet.hw.ac.uk 1 Private and Confidential

    E-Print Network [OSTI]

    Painter, Kevin

    www.pet.hw.ac.uk 1 Private and Confidential Application for MSc Courses - Supplementary Information of Exam Grade Attained Subjects taken at `O' level or equivalent with grades #12;www.pet.hw.ac.uk 2 of principal & subsidiary subjects Please leave blank for Institute Use #12;www.pet.hw.ac.uk 3 Employment Dates

  11. www.strath.ac.uk THIS IS YOUR

    E-Print Network [OSTI]

    Mottram, Nigel

    Building Lorna Bennet SBS Exchange Co-ordinator Michele French SBS Exchange Secretary 01 | Contents 03 Building erkan.oterkus@strath.ac.uk Lorna Bennet Strathclyde Business School Level 2, Sir William Duncan Building lorna.bennet@strath.ac.uk www.strath.ac.uk | 06 #12;Key Dates www

  12. Distinctly Ambitious www.hw.ac.uk

    E-Print Network [OSTI]

    Painter, Kevin

    , Duncan Hand at the James Watt Institute for High Value Manufacturing led a team to apply laser-based manufacturing processes to the production of dental products. The project led to the development of a laserDistinctly Ambitious www.hw.ac.uk Laser Machining #12;Cutting-edge engineering technology for laser

  13. Physics and contentswww.manchester.ac.uk

    E-Print Network [OSTI]

    engineering, science and bioscience research councils. As a postgraduate student at The UniversityPhysics and Astronomy #12;contentswww.manchester.ac.uk 12 The University of Manchester 2 Physics to be part of The University of Manchester. If you choose to be a postgraduate student here you can join us

  14. Four-Channel Differential AC Amplifier

    E-Print Network [OSTI]

    Kleinfeld, David

    to amplify cellular neurophysiological signals in applications requiring high gain, high input impedance, low://www.a-msystems.com General Description Instrument Features The Four-Channel Differential AC Amplifier Model 1700 is designed noise, high common-mode rejection, and powerline interference rejection. Typical applications include

  15. AC Losses of Prototype HTS Transmission Cables

    SciTech Connect (OSTI)

    Demko, J.A.; Dresner, L.; Hughey, R.L.; Lue, J.W.; Olsen, S.K.; Sinha, U.; Tolbert, J.C.

    1998-09-13T23:59:59.000Z

    Since 1995 Southwire Company and Oak Ridge National Laboratory (ORNL) have jointly designed, built, and tested nine, l-m long, high temperature superconducting (HTS) transmission cable prototypes. This paper summarizes the AC loss measurements of five of the cables not reported elsewhere, and compares the losses with each other and with theory developed by Dresner. Losses were measured with both a calorimetric and an electrical technique. Because of the broad resistive transition of the HTS tapes, the cables can be operated stably beyond their critical currents. The AC losses were measured in this region as well as below critical currents. Dresner's theory takes into account the broad resistive transition of the HTS tapes and calculates the AC losses both below and above the critical current. The two sets of AC 10SS data agree with each other and with the theory quite welL In particular, at low currents of incomplete penetration, the loss data agree with the theoretical prediction of hysteresis loss based on only the outer two Iayers carrying the total current.

  16. Development and Validation of WECC Variable Speed Wind Turbine Dynamic Models for Grid Integration Studies

    SciTech Connect (OSTI)

    Behnke, M.; Ellis, A.; Kazachkov, Y.; McCoy, T.; Muljadi, E.; Price, W.; Sanchez-Gasca, J.

    2007-09-01T23:59:59.000Z

    This paper describes reduced-order, simplified wind turbine models for analyzing the stability impact of large arrays of wind turbines with a single point of network interconnection.

  17. Renewable portfolio standards, Greenhouse gas reduction, and Long-Line transmission investments in the WECC

    SciTech Connect (OSTI)

    Olson, Arne; Orans, Ren; Allen, Doug; Moore, Jack; Woo, C.K.

    2009-11-15T23:59:59.000Z

    New, long-distance transmission lines to remote areas with concentrations of high-quality renewable resources can help western states meet the challenges of increasing renewable energy procurement and reducing greenhouse gas emissions more cost-effectively than reliance on local resources alone. The approach applied here to the Western Electricity Coordinating Council is useful for an initial determination of the net benefits of long-line transmission between regions with heterogeneous resource quality. (author)

  18. National Assessment of Energy Storage for Grid Balancing and Arbitrage: Phase 1, WECC

    SciTech Connect (OSTI)

    Kintner-Meyer, Michael CW; Balducci, Patrick J.; Colella, Whitney G.; Elizondo, Marcelo A.; Jin, Chunlian; Nguyen, Tony B.; Viswanathan, Vilayanur V.; Zhang, Yu

    2012-06-01T23:59:59.000Z

    To examine the role that energy storage could play in mitigating the impacts of the stochastic variability of wind generation on regional grid operation, the Pacific Northwest National Laboratory (PNNL) examined a hypothetical 2020 grid scenario in which additional wind generation capacity is built to meet renewable portfolio standard targets in the Western Interconnection. PNNL developed a stochastic model for estimating the balancing requirements using historical wind statistics and forecasting error, a detailed engineering model to analyze the dispatch of energy storage and fast-ramping generation devices for estimating size requirements of energy storage and generation systems for meeting new balancing requirements, and financial models for estimating the life-cycle cost of storage and generation systems in addressing the future balancing requirements for sub-regions in the Western Interconnection. Evaluated technologies include combustion turbines, sodium sulfur (Na-S) batteries, lithium ion batteries, pumped-hydro energy storage, compressed air energy storage, flywheels, redox flow batteries, and demand response. Distinct power and energy capacity requirements were estimated for each technology option, and battery size was optimized to minimize costs. Modeling results indicate that in a future power grid with high-penetration of renewables, the most cost competitive technologies for meeting balancing requirements include Na-S batteries and flywheels.

  19. THE ACS NEARBY GALAXY SURVEY TREASURY

    SciTech Connect (OSTI)

    Dalcanton, Julianne J.; Williams, Benjamin F.; Rosema, Keith; Gogarten, Stephanie M.; Christensen, Charlotte; Gilbert, Karoline; Hodge, Paul [Department of Astronomy, Box 351580, University of Washington, Seattle, WA 98195 (United States); Seth, Anil C. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Dolphin, Andrew [Raytheon, 1151 E. Hermans Road, Tucson, AZ 85756 (United States); Holtzman, Jon [Department of Astronomy, New Mexico State University, Box 30001, 1320 Frenger St., Las Cruces, NM 88003 (United States); Skillman, Evan D.; Weisz, Daniel [Department of Astronomy, University of Minnesota, 116 Church St. SE, Minneapolis, MN 55455 (United States); Cole, Andrew [School of Mathematics and Physics, University of Tasmania, Hobart, Tasmania (Australia); Girardi, Leo [Osservatorio Astronomico di Padova - INAF, Vicolo dell'Osservatorio 5, I-35122 Padova (Italy); Karachentsev, Igor D. [Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnji Arkhyz, Karachai-Circessia Republic 369167 (Russian Federation); Olsen, Knut [NOAO, National Optical Astronomy Observatory 950 N. Cherry Ave., Tucson, AZ 85719 (United States); Freeman, Ken [Mount Stromlo Observatory, Research School of Astronomy and Astrophysics, The Australian National Univ., ACT 0200 (Australia); Gallart, Carme [Inst. de AstrofIsica de Canarias, VIa Lactea, s/n, 38200 La Laguna, Tenerife (Spain); Harris, Jason [Steward Observatory, Univ. of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); De Jong, Roelof S. [Space Telescope Science Inst., 3700 San Martin Dr., Baltimore, MD 21218 (United States)], E-mail: jd@astro.washington.edu, E-mail: ben@astro.washington.edu, E-mail: krosema@astro.washington.edu, E-mail: stephanie@astro.washington.edu, E-mail: christensen@astro.washington.edu, E-mail: fabio@astro.washington.edu, E-mail: trq@astro.washington.edu, E-mail: aseth@cfa.harvard.edu (and others)

    2009-07-15T23:59:59.000Z

    The ACS Nearby Galaxy Survey Treasury (ANGST) is a systematic survey to establish a legacy of uniform multi-color photometry of resolved stars for a volume-limited sample of nearby galaxies (D < 4 Mpc). The survey volume encompasses 69 galaxies in diverse environments, including close pairs, small and large groups, filaments, and truly isolated regions. The galaxies include a nearly complete range of morphological types spanning a factor of {approx}10{sup 4} in luminosity and star formation rate. The survey data consist of images taken with the Advanced Camera for Surveys (ACS) on the Hubble Space Telescope (HST), supplemented with archival data and new Wide Field Planetary Camera 2 (WFPC2) imaging taken after the failure of ACS. Survey images include wide field tilings covering the full radial extent of each galaxy, and single deep pointings in uncrowded regions of the most massive galaxies in the volume. The new wide field imaging in ANGST reaches median 50% completenesses of m {sub F475W} = 28.0 mag, m {sub F606W} = 27.3 mag, and m {sub F814W} = 27.3 mag, several magnitudes below the tip of the red giant branch (TRGB). The deep fields reach magnitudes sufficient to fully resolve the structure in the red clump. The resulting photometric catalogs are publicly accessible and contain over 34 million photometric measurements of >14 million stars. In this paper we present the details of the sample selection, imaging, data reduction, and the resulting photometric catalogs, along with an analysis of the photometric uncertainties (systematic and random), for both ACS and WFPC2 imaging. We also present uniformly derived relative distances measured from the apparent magnitude of the TRGB.

  20. ac-driven atomic quantum motor

    E-Print Network [OSTI]

    A. V. Ponomarev; S. Denisov; P. Hanggi

    2009-06-09T23:59:59.000Z

    We invent an ac-driven quantum motor consisting of two different, interacting ultracold atoms placed into a ring-shaped optical lattice and submerged in a pulsating magnetic field. While the first atom carries a current, the second one serves as a quantum starter. For fixed zero-momentum initial conditions the asymptotic carrier velocity converges to a unique non-zero value. We also demonstrate that this quantum motor performs work against a constant load.

  1. Direct amplitude detuning measurement with ac dipole

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

    White, S.; Maclean, E.; Tomás, R.

    2013-07-01T23:59:59.000Z

    In circular machines, nonlinear dynamics can impact parameters such as beam lifetime and could result in limitations on the performance reach of the accelerator. Assessing and understanding these effects in experiments is essential to confirm the accuracy of the magnetic model and improve the machine performance. A direct measurement of the machine nonlinearities can be obtained by characterizing the dependency of the tune as a function of the amplitude of oscillations (usually defined as amplitude detuning). The conventional technique is to excite the beam to large amplitudes with a single kick and derive the tune from turn-by-turn data acquired with beam position monitors. Although this provides a very precise tune measurement it has the significant disadvantage of being destructive. An alternative, nondestructive way of exciting large amplitude oscillations is to use an ac dipole. The perturbation Hamiltonian in the presence of an ac dipole excitation shows a distinct behavior compared to the free oscillations which should be correctly taken into account in the interpretation of experimental data. The use of an ac dipole for direct amplitude detuning measurement requires careful data processing allowing one to observe the natural tune of the machine; the feasibility of such a measurement is demonstrated using experimental data from the Large Hadron Collider. An experimental proof of the theoretical derivations based on measurements performed at injection energy is provided as well as an application of this technique at top energy using a large number of excitations on the same beam.

  2. ac to dc converters: Topics by E-print Network

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

    to use solid state Inverters(DC to AC converters) to have a variable voltage, fixed or variable frequency power source available for industrial applications. With advancements...

  3. AUV {gslee, sbahk}@netlab.snu.ac.kr

    E-Print Network [OSTI]

    Bahk, Saewoong

    AUV , {gslee, sbahk}@netlab.snu.ac.kr Transmission Power Control in Cluster AUV (CH) AUV . 1 . 1. 2. 3 . AUV CH (Buoy

  4. University Policy No.: AC1145 Classification: Academic and Students

    E-Print Network [OSTI]

    Victoria, University of

    University Policy No.: AC1145 Classification: Academic and Students Approving Authority, interdisciplinary programs, divisions, and the library) will undergo a review every five to seven years

  5. University Policy No.: AC1150 Classification: Academic and Students

    E-Print Network [OSTI]

    Victoria, University of

    University Policy No.: AC1150 Classification: Academic and Students TEACHING, portfolios, references, library resources, laboratories and equipment) related to the subject matter

  6. WASEDAUNIVERSITY http://www.sci.waseda.ac.jp/research/

    E-Print Network [OSTI]

    Kasahara, Hironori

    ://www.ase.sci.waseda.ac.jp/ http://www.waseda.jp/ips/ http://www.waseda.jp/weee/ INDEX 2015 5 2 31http

  7. ac conductivity studies: Topics by E-print Network

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

    Last updated 8 Plotkin, Joshua B. 40 Study of supplementary controls for embedded HVDC links in a AC power system. Open Access Theses and Dissertations Summary: ??This...

  8. ac line conditioners: Topics by E-print Network

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

    of lines . ..2 Main Terasoma, Tomohide 83 Study of supplementary controls for embedded HVDC links in a AC power system. Open Access Theses and Dissertations Summary: ??This...

  9. ac losses: Topics by E-print Network

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

    23 24 25 Next Page Last Page Topic Index 1 Transport AC loss in high temperature superconducting coils University of Cambridge - Dspace Summary: 's electromagnetic properties and...

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

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

    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...

  11. AC power | Princeton Plasma Physics Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch >InternshipDepartmentNeutrino-Induced1 TEMPERATUREii ABSTRACT ThisAC

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

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

    Siemens-VersiCharge AC Level 2 Charging System Testing Results AVTA: Siemens-VersiCharge AC Level 2 Charging System Testing Results The Vehicle Technologies Office's Advanced...

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

    Energy Savers [EERE]

    2012 More Documents & Publications AVTA: Aerovironment AC Level 2 Charging System Testing Results AVTA: GE Smart Grid Capable AC Level 2 Testing Results AVTA: Siemens-VersiCharge...

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

    DOE Patents [OSTI]

    Hovarongkura, A. David (Arlington, VA); Henry, Jr., Joseph D. (Morgantown, WV)

    1981-01-01T23:59:59.000Z

    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.

  15. business.cardiff.ac.uk Cardiff Business sChool

    E-Print Network [OSTI]

    Davies, Christopher

    business.cardiff.ac.uk Cardiff Business sChool MBa PrograMMes #12;01 business.cardiff.ac.ukWhy Cardiff Business School?01 Why Cardiff Business sChool? We are accredited by the Association to Advance Collegiate Schools of Business (AACSB International), a leading hallmark of business school excellence. We

  16. www.swansea.ac.uk/artsandhumanities Arts and Humanities

    E-Print Network [OSTI]

    Martin, Ralph R.

    dissertation or design a research project of their own (with 10,000 word report) which draws on issues Email: rhys.jones@swansea.ac.uk www.swansea.ac.uk/mediastudies/admissions - The Potter Guide to Higher relations, humanities, social science, computer science or related background. Professionals interested

  17. www.mmu.ac.uk/careers Careers & Employability Service

    E-Print Network [OSTI]

    ;www.mmu.ac.uk/careers Identifying courses · www.prospects.ac.uk/search_courses.htm · www: Courses to allow you to enter certain professions Courses that build your skills in a new area Examples · MRes (taught prep for further research) These usually involve lectures for the first two terms

  18. Personal Web Archive: E-mail: waka@iplab.cs.tsukuba.ac.jp, {shizuki,jiro}@cs.tsukuba.ac.jp

    E-Print Network [OSTI]

    Tanaka, Jiro

    Personal Web Archive: Web E-mail: waka@iplab.cs.tsukuba.ac.jp, {shizuki,jiro}@cs.tsukuba.ac.jp Web Web Web Web Web Web Personal Web Archive Personal Web Archive: Support System for Browsing the Versions of Web Page Ryota WAKAMATSU Buntarou SHIZUKI Jiro TANAKA Graduate School of Systems

  19. Safe-commutation principle for direct single-phase AC-AC converters for use in audio power

    E-Print Network [OSTI]

    and G, expressed as very low total harmonic distortion + noise (THD+N) levels and supplemented. SIngle Conversion stage AMplifier (SICAM) is the next im- portant evolutionary step in designing-stage AC-AC audio power amplifiers. As compared with the bridge commutation with load current or source

  20. 2010 Wind Technologies Market Report

    E-Print Network [OSTI]

    Wiser, Ryan

    2012-01-01T23:59:59.000Z

    Coordinating Council (WECC). 2010. Scope of the EfficientCoordinating Council (WECC) authorized a cost benefitthe Western Interconnection (WECC 2010). Some utilities are

  1. Regulation, Allocation, and Leakage in Cap-and-Trade Markets for CO2

    E-Print Network [OSTI]

    Bushnell, Jim B; Chen, Yihsu

    2009-01-01T23:59:59.000Z

    of the Western Electricity Coordinat- ing Council (WECC).The WECC is the organization responsible for coordinatingof these regions. First The WECC periodically reports on the

  2. The Cost of Transmission for Wind Energy: A Review of Transmission Planning Studies

    E-Print Network [OSTI]

    Mills, Andrew D.

    2009-01-01T23:59:59.000Z

    publications.html PG&E. 2007a. WECC Regional PlanningCalifornia Electric: WECC Regional Planning Project,Presentation January 23,2008 WECC Regional Planning Review

  3. Coupling Renewable Energy Supply with Deferrable Demand

    E-Print Network [OSTI]

    Papavasiliou, Anthony

    2011-01-01T23:59:59.000Z

    8.1.1 The WECC Model . . . . . . . . . . . . . . . . .Generation mix of the WECC model . . . . . . . . . . . .Net load of WECC for each day type (not including wind power

  4. An Examination of Temporal Trends in Electricity Reliability Based on Reports from U.S. Electric Utilities

    E-Print Network [OSTI]

    Eto, Joseph H.

    2013-01-01T23:59:59.000Z

    SAIDI SAIFI SERC SPP TRE WECC Alaska Systems CoordinatingElectricity Coordinating Council (WECC) Midwest ReliabilityCoordinating Council (WECC). Completeness of reported

  5. 2011 Wind Technologies Market Report

    E-Print Network [OSTI]

    Bolinger, Mark

    2013-01-01T23:59:59.000Z

    June 2012. Western Electricity Coordinating Council (WECC).2011. WECC Efficient Dispatch Toolkit Cost-Benefit Analysis.Coordinating Council (WECC). 2010. Scope of the Efficient

  6. Energy Efficiency as a Preferred Resource: Evidence from Utility Resource Plans in the Western United States and Canada

    E-Print Network [OSTI]

    Hopper, Nichole

    2008-01-01T23:59:59.000Z

    Coordinating Council (WECC) (2005). Hourly Demands 1998-Coordinating Council (WECC, 2005). 3 To compare utilities’one to three years. The WECC control area roughly includes

  7. REAL TIME SYSTEM OPERATIONS 2006-2007

    E-Print Network [OSTI]

    Eto, Joseph H.

    2008-01-01T23:59:59.000Z

    Table 1: Spectral content of WECC data Arnold SchwarzeneggerCoordinating Council (WECC) utility  transmission Coordinating Council (WECC)  coordination, and North 

  8. Uncertainties in the Value of Bill Savings from Behind-the-Meter, Residential Photovoltaic Systems: The Roles of Electricity Market Conditions, Retail Rate Design, and Net Metering

    E-Print Network [OSTI]

    Darghouth, Naim Richard

    2013-01-01T23:59:59.000Z

    Coordinating Council (WECC) region with increasedgeneration in the wider WECC region, at least partially.the region of study were WECC, geographic diversity of solar

  9. Approaches To Integrating A HIgh Penertration Of Solar PV and CPV Onto The Electrical Grid

    E-Print Network [OSTI]

    Hill, Steven Craig

    2013-01-01T23:59:59.000Z

    Electric Coordinating Council (WECC), the National RenewableSubstations Recommendations For WECC Transmission Expansioncoordinated with the CAISO and WECC. OTHER The target budget

  10. Loads Providing Ancillary Services: Review of International Experience

    E-Print Network [OSTI]

    Heffner, Grayson

    2008-01-01T23:59:59.000Z

    AD? OpenDocument WECC 2005, Frequency Response Standard,30-minute response. Finally, a WECC proposes a reduction ineach Balancing Area to a single WECC wide spinning reserve

  11. Delivering Energy Efficiency to Middle Income Single Family Households

    E-Print Network [OSTI]

    Zimring, Mark

    2012-01-01T23:59:59.000Z

    Cohen (DOE), Todd Conkey (WECC), Neely Crane-Smit (MNCEE),Diamond (LBNL), George Edgar (WECC), Lara Ettenson & team (Assistance Program WECC – Wisconsin Energy Conservation

  12. Understanding Bulk Power Reliability: The Importance of Good Data and A Critical Review of Existing Sources

    E-Print Network [OSTI]

    Fisher, Emily

    2012-01-01T23:59:59.000Z

    separation ConEd NY - Terrorist Attack WECC- AZNMSNVcontractor accident WECC- NWPP severe weather Date #Rain TransEnergie short circuit WECC line fault Jacksonville

  13. FINAL PROJECT REPORT LOAD MODELING TRANSMISSION RESEARCH

    E-Print Network [OSTI]

    Lesieutre, Bernard

    2013-01-01T23:59:59.000Z

    Air Conditioner Testing in WECC,” IEEE Power  Engineering Air Conditioner Modeling, WECC Load Modeling Task  Force in power system studies: WECC progress update,? Power and 

  14. Demand Response Spinning Reserve Demonstration

    E-Print Network [OSTI]

    2007-01-01T23:59:59.000Z

    Electric Coordinating Council (WECC); Fred LeBlanc, WesternAdministration (WAPA) and WECC; and Dorris Lam, Californiaon System Stability. WECC system stability is enhanced when

  15. Financial Analysis of Incentive Mechanisms to Promote Energy Efficiency: Case Study of a Prototypical Southwest Utility

    E-Print Network [OSTI]

    Cappers, Peter

    2009-01-01T23:59:59.000Z

    Conservation Corporation (WECC) 1993. “Evaluation of DSMnumber of future years (WECC 1993). Disallowance of theseutility’s financial strength (WECC 1993). Utilities focused

  16. Energy Efficiency in Western Utility Resource Plans: Impacts on Regional Resources Assessment and Support for WGA Policies

    E-Print Network [OSTI]

    Hopper, Nicole; Goldman, Charles; Schlegal, Jeff

    2006-01-01T23:59:59.000Z

    PNM PSCO PSE PUC SDG&E SCE WECC average megawatts Britishwith appropriate NERC and WECC committees and subcommitteesconsistent across NERC, WECC and state/regional assessments

  17. 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

    1982-09-01T23:59:59.000Z

    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.

  18. DC, AC and advanced EV propulsion systems

    SciTech Connect (OSTI)

    O'Neil, W.

    1983-08-01T23:59:59.000Z

    Battery development and liquid fuel availability and cost are still the pacing factors in wide scale electric vehicle introduction. Propulsion systems also require technical development, however, if electric vehicles are to be acceptable in the marketplace in competition against ICE vehicles. Eaton Corporation has undertaken a program designed to identify and investigate three broad types of propulsion systems in identical test vehicles on the same test track under conditions as similar as possible. Characteristics of dc, ac and advanced systems are compared to date, and projections of anticipated results and further work are provided. The compelling advantages of multiple mechanical ratios in EV propulsion systems are reviewed. An emerging, but less obvious, advantage is higher overall system efficiency.

  19. Optimal design of AC filter circuits in HVDC converter stations

    SciTech Connect (OSTI)

    Saied, M.M.; Khader, S.A. [Kuwait Univ. (Kuwait). Electrical and Computer Engineering Dept.

    1995-12-31T23:59:59.000Z

    This paper investigates the reactive power as well as the harmonic conditions on both the valve and the AC-network sides of a HVDC converter station. The effect of the AC filter circuits is accurately modeled. The program is then augmented by adding an optimization routine. It can identify the optimal filter configuration, yielding the minimum current distortion factor at the AC network terminals for a prespecified fundamental reactive power to be provided by the filter. Several parameter studies were also conducted to illustrate the effect of accidental or intentional deletion of one of the filter branches.

  20. Application of direct pulsewidth modulation scheme to AC-DC converters: - a way to reduce ripple

    E-Print Network [OSTI]

    Zhang, Yuemin

    1993-01-01T23:59:59.000Z

    Modulation (ISPWM), 4 Direct Pulsewidth Modulation (DPWM). 15 5 Single Phase Half Controlled PWM ac-dc Converter . 6 Single Phase Full controlled PWM ac-dc Converter . 18 18 7 Simulation of SPWM ac-dc Converter. 20 8 Output Voltage Spectra of SPWM ac... 30 Balanced Three Phase Inputs 31 Output Voltage of A Three Phase Full Controlled ac-dc SPWM Converter. 42 32 Output Voltage of A Three Phase Full Controlled ac-dc EPWM Con- verter 33 Output Voltage of A Three Phase Full Controlled ac-dc ISPWM Con...

  1. Contract Number: DE-AC05-76RL01830 Modification M705

    E-Print Network [OSTI]

    #12;#12;Contract Number: DE-AC05-76RL01830 Modification M705 #12;Contract Number: DE-AC05-76RL01830 Modification M705 #12;Contract Number: DE-AC05-76RL01830 Modification M705 #12;Contract Number: DE-AC05-76RL01830 Modification M705 #12;Contract Number: DE-AC05-76RL01830 Modification M705 #12;Contract Number: DE

  2. www.eprg.group.cam.ac.uk EPRGWORKINGPAPER

    E-Print Network [OSTI]

    Aickelin, Uwe

    are efficiency, sustainability and security of energy supplies (Euwww.eprg.group.cam.ac.uk EPRGWORKINGPAPER Abstract Conceptualizing Energy Security EPRG Working Paper 1123 Cambridge Working Paper in Economics 1151 Christian Winzer Energy security is one of the main

  3. A Distributed Generation Control Architecture for Islanded AC Microgrids

    E-Print Network [OSTI]

    Dominguez-Garcia, Alejandro

    1 A Distributed Generation Control Architecture for Islanded AC Microgrids Stanton T. Cady, Student architecture for generation control in islanded microgrids, and illustrate the performance Member, IEEE Abstract In this paper, we propose a distributed architecture for generation control

  4. acs news service: Topics by E-print Network

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

    www.mmu.ac.ukcareers PG ProfessionalVocational courses: Courses to allow you to enter certain professions Courses involve lectures for the first two terms then a research...

  5. www.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY

    E-Print Network [OSTI]

    Aickelin, Uwe

    www.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY Contracting for wind generation EPRG to the current Renewable Obligation Certificates, ROCs, where an on-shore wind generator receives one ROC

  6. acs presspac: Topics by E-print Network

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

    limits. The models are used to estimate the benefits of electricity locational marginal pricing (LMP) that arise from de Gispert, Adri 344 www.eprg.group.cam.ac.uk...

  7. ac microsized gliding: Topics by E-print Network

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

    limits. The models are used to estimate the benefits of electricity locational marginal pricing (LMP) that arise from de Gispert, Adri 417 www.eprg.group.cam.ac.uk...

  8. acs evidence based: Topics by E-print Network

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

    limits. The models are used to estimate the benefits of electricity locational marginal pricing (LMP) that arise from de Gispert, Adri 260 34CEN.ACS.ORG DECEMBER 23, 2013...

  9. ac surface photovoltage: Topics by E-print Network

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

    limits. The models are used to estimate the benefits of electricity locational marginal pricing (LMP) that arise from de Gispert, Adri 483 www.eprg.group.cam.ac.uk...

  10. ac electrokinetic micropumps: Topics by E-print Network

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

    limits. The models are used to estimate the benefits of electricity locational marginal pricing (LMP) that arise from de Gispert, Adri 477 www.eprg.group.cam.ac.uk...

  11. acs na periferia: Topics by E-print Network

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

    limits. The models are used to estimate the benefits of electricity locational marginal pricing (LMP) that arise from de Gispert, Adri 388 www.eprg.group.cam.ac.uk...

  12. acute cholecystitis ac: Topics by E-print Network

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

    limits. The models are used to estimate the benefits of electricity locational marginal pricing (LMP) that arise from de Gispert, Adri 384 www.eprg.group.cam.ac.uk...

  13. Cognitive Radio Network {swjang, sbahk}@netlab.snu.ac.kr

    E-Print Network [OSTI]

    Bahk, Saewoong

    2010 Cognitive Radio Network , , {swjang, sbahk}@netlab.snu.ac.kr Analysis of Average Opportunities in Cognitive Radio Networks Seowoo Jang, Saewoong Bahk INMC, EECS, Seoul National University Cognitive Radio Network . Primary user

  14. ac loss measurement: Topics by E-print Network

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

    tape, tem- perature dependence, total ac loss, transport loss. I. INTRODUCTION HIGH 6 Heat Loss Measurement Using Infrared Imaging Texas A&M University - TxSpace Summary: in...

  15. ac linear positioning: Topics by E-print Network

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

    USA kimik@yonsei.ac.kr Abstract- In this paper, one linear tapered slot antenna (LTSA), backed Tentzeris, Manos 187 The Square Root Law Requires a Linear Key Andrew D. Ker...

  16. November 2013 www.kent.ac.uk/library

    E-Print Network [OSTI]

    Banaji,. Murad

    November 2013 www.kent.ac.uk/library Information Services Templeman Library SCONUL Access scheme) to the Templeman Library. I am a registered member of the Sconul Access scheme and hold a valid card. If given ............................... ................................................................................................................ Home library

  17. acs morphological study: Topics by E-print Network

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

    (more) Yang, Emma Yunyi 2013-01-01 29 Study of supplementary controls for embedded HVDC links in a AC power system. Open Access Theses and Dissertations Summary: ??This...

  18. ac impedance study: Topics by E-print Network

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

    high chromaticity. White, S 2014-01-01 37 Study of supplementary controls for embedded HVDC links in a AC power system. Open Access Theses and Dissertations Summary: ??This...

  19. Microfluidics {sjauh, btzhang}@bi.snu.ac.kr

    E-Print Network [OSTI]

    Microfluidics {sjauh, btzhang}@bi.snu.ac.kr Solving Shortest Path Problems Using Microfluidics Sahng-Joon Auh and Byoung-Tak Zhang Biointelligence Lab, School of Computer Science and Engineering Seoul National University . microfluidics MEMS

  20. ac josephson effect: Topics by E-print Network

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

    in the dc mass currents voltage, a high frequency ac voltage is applied across a superconduct- ing Josephson junction, the dc, Dm 22eV, application of a dc voltage produces...

  1. ac magnetic field: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 126 Anisotropy of magnetic emulsions induced by magnetic and...

  2. ac magnetic fields: Topics by E-print Network

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

    contract No. DE-AC02-76CH00016. Abstract A common coil design concept for 2-in-1 superconduct- ing Gupta, Ramesh 126 Anisotropy of magnetic emulsions induced by magnetic and...

  3. www.arts.canterbury.ac.nz/internships Project Title

    E-Print Network [OSTI]

    Hickman, Mark

    , researching suppliers and material requirements. The intern will also do research about.arts.canterbury.ac.nz/internships Necessary Qualifications: Major/Minors(s): All majors in the B.A. especially those interested in media

  4. Strongly nonlinear dynamics of electrolytes in large ac voltages

    E-Print Network [OSTI]

    Hojgaard Olesen, Laurits

    We study the response of a model microelectrochemical cell to a large ac voltage of frequency comparable to the inverse cell relaxation time. To bring out the basic physics, we consider the simplest possible model of a ...

  5. Adjustable Speed AC Motor Drives-Applications Problems

    E-Print Network [OSTI]

    Enjeti, P.

    Adjustable Speed AC Motor Drives Applications Problems by Dr. P. Enjeti Power Quality Laboratory Department ofElectrical Engineering Texas A&M University College Station, TX 77843 Tel: 409-845-7466 Fax: 409-845-6259 Email..., it generates side effects, some which have been recognized only recently. This paper presents a comprehensive coverage of application issues of PWM inverter controlled ac motor drives which include damage to motor insulation due to reflected voltages caused...

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

    SciTech Connect (OSTI)

    Suparna Kadam; Miles Russell

    2012-06-15T23:59:59.000Z

    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.

  7. http://www-cr.scphys.kyoto-u.ac.jp/gakubu/P6.html http://www-cr.scphys.kyoto-u.ac.jp/gakubu/P6.html

    E-Print Network [OSTI]

    2011 P6 http://www-cr.scphys.kyoto-u.ac.jp/gakubu/P6.html web #12;http://www-cr.scphys.kyoto-u.ac.jp/gakubu/P6.html () ( #12;http://www-cr.scphys.kyoto-u.ac.jp/gakubu/P6.html X MeV X Astro-H 2013 TeV10m) #12;http://www-cr.scphys.kyoto-u.ac.jp/gakubu/P6.html 2010 ASTRO-H CCD X (2) () (2) (2

  8. Frequency Control Performance Measurement and Requirements

    E-Print Network [OSTI]

    Illian, Howard F.

    2011-01-01T23:59:59.000Z

    Standard Drafting Team, September 30. [81] WECC Tutorial onSpeed Governors, WECC Control Work Group, February 1998,http://www.wecc.biz/library/WECC%20Documents/Documents%

  9. Annual Energy Outlook 2015 - Appendix F

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

    15. SRCE SERC Central 16. SRVC SERC VACAR 17. SPNO SPP North 18. SPSO SPP South 19. AZNM WECC Southwest 20. CAMX WECC California 21. NWPP WECC Northwest 22. RMPA WECC Rockies...

  10. Changes in the Economic Value of Variable Generation at High Penetration Levels: A Pilot Case Study of California

    E-Print Network [OSTI]

    Mills, Andrew

    2013-01-01T23:59:59.000Z

    PV REC RPS RT SAM T&D TES WECC WREZ WWSIS VG VOLL AncillaryCoordinating Council (WECC). http://www.wecc.biz/committees/Coordinating Council (WECC). TEPPC TAS 2020 Dataset

  11. Dynamic Simulation Studies of the Frequency Response of the Three U.S. Interconnections with Increased Wind Generation

    E-Print Network [OSTI]

    Mackin, Peter

    2011-01-01T23:59:59.000Z

    on work performed by the WECC Wind Generator Modeling GroupModeling Approach in the WECC. ” IEEE Transactions on PowerNational Laboratory. 11. WECC. 2008. WECC Standard BAL-002-

  12. Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation

    E-Print Network [OSTI]

    Eto, Joseph H.

    2011-01-01T23:59:59.000Z

    Responsive Reserve Report. WECC Frequency Responsive Reserve=&View={BB5A76DA-21C8-48FC-9468-F82B395DF8F9} WECC.2008. WECC Standard BAL-002-WECC-1 - Contingency Reserves.

  13. 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

    2013-02-26T23:59:59.000Z

    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.

  14. DE-AC05-00OR22725 Section B--Page 1 of 7 DE-AC05-00OR22725

    E-Print Network [OSTI]

    .......................................................................... 5 #12;DE-AC05-00OR22725 Section B--Page 2 of 7 DE-AC05-000R22725 Modification No. 760 Section B Blank Page #12;DE-AC05-00OR22725 Section B--Page 3 of 7 DE-AC05-000R22725 Modification No. 760 Section B of 7 DE-AC05-000R22725 Modification No. 760 Section B 4) $267,518 for the project entitled "4500 Area

  15. Interactions between Energy Efficiency Programs funded under the Recovery Act and Utility Customer-Funded Energy Efficiency Programs

    E-Print Network [OSTI]

    Goldman, Charles A.

    2011-01-01T23:59:59.000Z

    Minnesota OES), Sue Hason (WECC), Alan Hee, Robert Jackson (Power), Kathy Kuntz (WECC), Thad Kurowski (Colorado GEO),

  16. AC Loss Measurements on a 2G YBCO Coil

    SciTech Connect (OSTI)

    Rey, Christopher M [ORNL] [ORNL; Duckworth, Robert C [ORNL] [ORNL; Schwenterly, S W [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    The Oak Ridge National Laboratory (ORNL) is collaborating with Waukesha Electric Systems (WES) to continue development of HTS power transformers. For compatibility with the existing power grid, a commercially viable HTS transformer will have to operate at high voltages in the range of 138 kV and above, and will have to withstand 550-kV impulse voltages as well. Second-generation (2G) YBCO coated conductors will be required for an economically-competitive design. In order to adequately size the refrigeration system for these transformers, the ac loss of these HTS coils must be characterized. Electrical AC loss measurements were conducted on a prototype high voltage (HV) coil with co-wound stainless steel at 60 Hz in a liquid nitrogen bath using a lock-in amplifier technique. The prototype HV coil consisted of 26 continuous (without splice) single pancake coils concentrically centered on a stainless steel former. For ac loss measurement purposes, voltage tap pairs were soldered across each set of two single pancake coils so that a total of 13 separate voltage measurements could be made across the entire length of the coil. AC loss measurements were taken as a function of ac excitation current. Results show that the loss is primarily concentrated at the ends of the coil where the operating fraction of critical current is the highest and show a distinct difference in current scaling of the losses between low current and high current regimes.

  17. Superconducting shielded core reactor with reduced AC losses

    DOE Patents [OSTI]

    Cha, Yung S.; Hull, John R.

    2006-04-04T23:59:59.000Z

    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.

  18. List of Participants Brian Baptie British Geological Survey bbap@bgs.ac.uk

    E-Print Network [OSTI]

    .ac.uk Nicola D'Agostino Istituto Nazionale Geofisica Vulcanologia dagostin@ingv.it Serena Davies 360 Production@bgs.ac.uk Guilio Selvaggi Istituto Nazionale Geofisica Vulcanologia selvaggi@ingv.it Alistair Sloan Earth Sciences

  19. DE-AC02-76SF00515 Apr2007/Rev 1

    E-Print Network [OSTI]

    Wechsler, Risa H.

    DE-AC02-76SF00515 Appendix B Apr2007/Rev 1 FY 2007 Contractor Performance Evaluation and Measurement Plan for Management and Operations ofthe Stanford Linear Accelerator Center J-B-i #12;DE-AC02

  20. Twitter @RoyalHolloway royalholloway.ac.ukfacebook.com Search: Royal Holloway, University of London

    E-Print Network [OSTI]

    Sheldon, Nathan D.

    connect@rhul.ac.uk Tuesday11 Royal Holloway Balkan Ensemble An energetic performance of Balkan music

  1. Law, Justice and Regulation at UEA law-justice-regulation@uea.ac.uk

    E-Print Network [OSTI]

    Everest, Graham R

    .dewing@uea.ac.uk Ivan Diaz-Rainey (NBS) Regulation of energy and environmental markets http://www.uea.ac.uk/nbs/people/People/Academic/Ivan+Diaz- Rainey i.diaz-rainey@uea.ac.uk Catherine Wad- dams (NBS/CCP) Economic regulation, competition, energy1 Network on Law, Justice and Regulation at UEA law-justice-regulation@uea.ac.uk 21 October 2010

  2. Boys and Girls, Be Ambitious! http://www.math.sci.hokudai.ac.jp/message/message-graduates/

    E-Print Network [OSTI]

    Nakamura, Iku

    ://www.math.sci.hokudai.ac.jp/ #12;AIKAWA, Hiroaki WebPage http://www.math.sci.hokudai.ac.jp/ aik/index-j.html Fatou Martin Harnack AKITA, Toshiyuki WebPage http://www.math.sci.hokudai.ac.jp/ akita/ Eilenberg-MacLane Coxeter #12;ASAKURA, Masanori ARAI, Asao ABE, Noriyuki WebPage http://www.math.sci.hokudai.ac.jp/ abenori/ #12;ISHIKAWA, Goo Web

  3. 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.

    2008-01-31T23:59:59.000Z

    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.

  4. A scanning AC calorimetry technique for the analysis of nano-scale quantities of materials

    E-Print Network [OSTI]

    A scanning AC calorimetry technique for the analysis of nano-scale quantities of materials Kechao OF SCIENTIFIC INSTRUMENTS 83, 114901 (2012) A scanning AC calorimetry technique for the analysis of nano 2012) We present a scanning AC nanocalorimetry method that enables calorimetry measurements at heating

  5. University Policy No.: AC1110 Classification: Academic and Students

    E-Print Network [OSTI]

    Victoria, University of

    other than the university community. DEFINITIONS 2.00 EDUCATIONAL SERVICE CONTRACT means a contract://web.uvic.ca/univsec/pol_pro/pol1000/1002SA.html) 8.00 Approval of an Educational Service Contract will be granted by the Dean andUniversity Policy No.: AC1110 Classification: Academic and Students EDUCATIONAL SERVICE

  6. POLICY ON CALENDAR SUBMISSIONS University Policy No: AC1120

    E-Print Network [OSTI]

    Victoria, University of

    1 POLICY ON CALENDAR SUBMISSIONS University Policy No: AC1120 Classification: Academic and Students relevant university policies and procedures, academic policies and regulations, university fees, courses and programs of study. The purpose of this policy is to outline requirements for publishing the University

  7. University Policy No.: AC1130 Classification: Academic and Students

    E-Print Network [OSTI]

    Victoria, University of

    University Policy No.: AC1130 Classification: Academic and Students Approving Authority: Board Last Editorial Change: Mandated Review: 2018 PURPOSE 1.00 The purpose of this policy is to provide guidance on the establishment and governance of student awards by the university. POLICY 2.00 Student

  8. www.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY

    E-Print Network [OSTI]

    de Gispert, Adrià

    but low variable cost capacity (coal-fired plants), and the other building low polluting but high variable in electricity generation market who are planning to expand generation capacity. They are anticipating regulation.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY We consider investments by two types of investors, one building highly polluting

  9. www.eprg.group.cam.ac.uk EPRGWORKINGPAPER

    E-Print Network [OSTI]

    Aickelin, Uwe

    parties in the nuclear supply chain whether they are providing decommissioning services, project, or the Parent Body Organisation responsible for decommissioning one the UK legacy nuclear installationswww.eprg.group.cam.ac.uk EPRGWORKINGPAPER Abstract Third Party Nuclear Liability: The Case

  10. www.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY

    E-Print Network [OSTI]

    Aickelin, Uwe

    Body Organisation responsible for decommissioning one the UK legacy nuclear installationswww.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY Third Party Nuclear Liability 1207 Anthony Thomas and Raphael J. Heffron With a return to nuclear new build expected in the UK

  11. www.tyndall.ac.uk The Tyndall Centre is

    E-Print Network [OSTI]

    Watson, Andrew

    to bring benefits for greenhouse gas reduction and social and economic development. One of the most by the market-structure behind these projects." The research has developed criteria for evaluating CDM forestry PhD from the Mexico study. Further information: k.brown@uea.ac.uk Please see Tyndall Technical Report

  12. www.eprg.group.cam.ac.uk EPRGWORKINGPAPER

    E-Print Network [OSTI]

    Aickelin, Uwe

    of 107 Strategic Eurasian Natural Gas Model for Energy Security and Policy Analysis1 Chi-Kong Chyongwww.eprg.group.cam.ac.uk EPRGWORKINGPAPER Abstract Strategic Eurasian Natural Gas Model for Energy-Kong Chyong and Benjamin F. Hobbs The mathematical formulation of a large-scale equilibrium natural gas

  13. www.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY

    E-Print Network [OSTI]

    Aickelin, Uwe

    . Although large-scale natural gas models have been developed and used for energy security and policywww.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY Strategic Eurasian Natural Gas Model-scale equilibrium natural gas simulation model that covers gas markets of the EU and the Former Soviet Union

  14. www.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY

    E-Print Network [OSTI]

    Aickelin, Uwe

    in concern about the security of natural gas supply to Europe, particularly supplies from Russia. A numberwww.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY Gas Supply Security in the Baltic, determining its level of security is a virtually impossible. The specific gas supply set up, the structure

  15. www.eprg.group.cam.ac.uk EPRGWORKINGPAPER

    E-Print Network [OSTI]

    Aickelin, Uwe

    in place designed to mitigate the effects of a disruption. Keywords Natural Gas, security of supply, Baltic not entirely, by the rise in concern about the security of natural gas supply to Europe, particularly supplieswww.eprg.group.cam.ac.uk EPRGWORKINGPAPER Abstract Gas Supply Security in the Baltic States

  16. ACS DIVISION OF POLYMERIC MATERIALS: SCIENCE AND ENGINEERING

    E-Print Network [OSTI]

    Gilchrist, James F.

    , interpenetrating polymer networks, IPNs. Other topics included the mechanical and morphological aspects of polymers textbook, "Introduction to Physical Polymer Science," with Wiley, 2004. While in retirement, he remains for Polymer Science and Engineering, and served as Education Chairman. His efforts at ACS have included

  17. SCHOOL OF ENGINEERING www.abdn.ac.uk/engineering

    E-Print Network [OSTI]

    Levi, Ran

    , in the planning and commissioning of equipment, and in site and plant supervision. Engineers require a wide rangeSCHOOL OF ENGINEERING www.abdn.ac.uk/engineering POSTGRADUATE GUIDE #12;MSc Renewable Energy MSc Safety Engineering for Oil & Gas MSc Subsea Engineering MSc Oil & Gas Engineering MSc Project Management

  18. www.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY

    E-Print Network [OSTI]

    de Gispert, Adrià

    as uncertainties are resolved reduces significantly its expected Levelised Cost Of generating Electricity (LCOE deterministic economic model to identify its LCOE without considering uncertainty. In the second step #12;www.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY we identified sources of uncertainty in the design that would affect its LCOE

  19. Introduc)on of lab ac)vi)es

    E-Print Network [OSTI]

    Chen, Po

    ·Overview of lab ac)vi)es #12;·En-Jui (En-Ray) Lee · h@p://www.gg.uwyo.edu/ggstudent/elee8 of Water · The characteris)cs of tsunamis & the early warning systems. #12 · Hydraulic gradient and its calcula)on · How to determina)on of groundwater flow

  20. 1go.warwick.ac.uk/engineering ENGINEERING

    E-Print Network [OSTI]

    Davies, Christopher

    1go.warwick.ac.uk/engineering 2012-13 ENGINEERING UNDERGRADUATE BROCHURE #12;2 Engineering Prospectus 2012-13 "BECAUSE ENGINEERING IS INEXTRICABLY TIED TO PEOPLE, IT CANNOT BE JUST AN APPLIED PHYSICAL SCIENCE; IT IS ALSO AN APPLIED SOCIAL SCIENCE. ... (THE ENGINEER'S)... RAISON D'Ã?TRE IS TO SERVE

  1. www.eprg.group.cam.ac.uk EPRGWORKINGPAPER

    E-Print Network [OSTI]

    Aickelin, Uwe

    wind power, long-term contracts, balancing costs JEL Classification Q42, L14, L94 Contact dmgn. The estimated extra trading and balancing costs of a CfD for on-shore wind might be £70 million/yr by 2020www.eprg.group.cam.ac.uk EPRGWORKINGPAPER Abstract Contracting for wind generation EPRG Working

  2. www.eprg.group.cam.ac.uk EPRGWORKINGPAPER

    E-Print Network [OSTI]

    Aickelin, Uwe

    www.eprg.group.cam.ac.uk EPRGWORKINGPAPER Abstract Nuclear Energy in the Enlarged European Union of nuclear energy and notes that it has shifted significantly as the European Union has grown from 15 member states to 27. The proportion of member states with nuclear energy experience has increased markedly. Also

  3. www.eprg.group.cam.ac.uk EPRGWORKINGPAPER

    E-Print Network [OSTI]

    de Gispert, Adrià

    . The models are used to estimate the benefits of electricity locational marginal pricing (LMP) that arise fromwww.eprg.group.cam.ac.uk EPRGWORKINGPAPER Abstract Locational-based Coupling of Electricity Markets the effects of varying system characteristics on the magnitude of the locational-based unit commitment

  4. www.weizmann.ac.il/library Introduction 3

    E-Print Network [OSTI]

    to the Library's printed and digital collections, including books, journals, theses, serials, and online lectures Weizmann Institute of Science Libraries 5 Digital Access · Arranging access to newly purchased electronic#12;www.weizmann.ac.il/library 2 Contents Introduction 3 The Library's Website 3 The Library

  5. www.eprg.group.cam.ac.uk EPRGWORKINGPAPER

    E-Print Network [OSTI]

    Aickelin, Uwe

    This paper summarises and reviews scholarly and political comment that draws parallels between the current: the nature of the political discourse; the relationship between an ethics-driven societal shift and economic Change, Slavery, Political Rhetoric JEL Classification B15 Contact wjn21@cam.ac.uk Publication August

  6. www.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY

    E-Print Network [OSTI]

    Aickelin, Uwe

    www.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY Reforming Small Power Systems under Rabindra Nepal and Tooraj Jamasb The pioneering electricity sector reforms in developing Latin American of `successful and comprehensive electricity reforms' in many less-developed countries like Nepal. Nepal's power

  7. www.eprg.group.cam.ac.uk EPRGWORKINGPAPER

    E-Print Network [OSTI]

    Aickelin, Uwe

    www.eprg.group.cam.ac.uk EPRGWORKINGPAPER Abstract Reforming Small Power Systems under Political Nepal and Tooraj Jamasb This paper assesses the electricity sector reforms across small power systems make power sector reform in Nepal and similar small systems a more complex process. As international

  8. www.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY

    E-Print Network [OSTI]

    Aickelin, Uwe

    valuation method (CVM) to investigate information effects in the valuation of electricity and waterwww.eprg.group.cam.ac.uk EPRGWORKINGPAPERNON-TECHNICALSUMMARY Information Effects in Valuation of Electricity and Water Service Attributes Using Contingent Valuation EPRG Working Paper 1127 Cambridge Working

  9. www.eprg.group.cam.ac.uk EPRGWORKINGPAPER

    E-Print Network [OSTI]

    Aickelin, Uwe

    factors that affect WTP for the attributes considered. Keywords Contingent Valuation Method, Willingnesswww.eprg.group.cam.ac.uk EPRGWORKINGPAPER Abstract Information Effects in Valuation of Electricity and Water Service Attributes Using Contingent Valuation EPRG Working Paper 1127 Cambridge Working Paper

  10. http://stir.ac.uk/4l Why study Management?

    E-Print Network [OSTI]

    Little, Tony

    http://stir.ac.uk/4l BSc(Hons) Management #12;Why study Management? Management essentially combines the flow of patients through hospital departments. Other modules include: Business Strategy, Project Management Case Studies and Energy Supply Case Study. Did you know? Excellent Management practice is required

  11. Beaming into matter and life www.cockcroft.ac.uk

    E-Print Network [OSTI]

    Crowther, Paul

    Beaming into matter and life www.cockcroft.ac.uk COCKCROFT STRATEGY MAP 2014-2020 Vision Continue and train the next generation of scientists and engineers, address societal challenges in energy · Globally Unique Skills Base · Societal Impact: Energy, Environment, Health, Security Strategic Enablers

  12. contents | print | close www.glasgow.ac.uk

    E-Print Network [OSTI]

    Guo, Zaoyang

    1 contents | print | close www.glasgow.ac.uk Gilmorehill Campus Development Framework June 2014 : Topic 4 107 Approach to Historic Assets: Sub Topics 108 · A Campus-wide Conservation Strategy 108 · Introduction 134 · Relevant Consultation Themes : Topic 7 135 Uses & Adaptability : Sub Topics 136 · Energy

  13. contents | print | close www.glasgow.ac.uk

    E-Print Network [OSTI]

    Guo, Zaoyang

    1 contents | print | close www.glasgow.ac.uk Gilmorehill Campus Development Framework FINAL : Topic 4 107 Approach to Historic Assets: Sub Topics 108 · A Campus-wide Conservation Strategy 108 · Introduction 134 · Relevant Consultation Themes : Topic 7 135 Uses & Adaptability : Sub Topics 136 · Energy

  14. Self-induced ac Stark shift in lasers

    SciTech Connect (OSTI)

    Gil, L.; Lippi, G. L. [Universite de Nice Sophia Antipolis, Institut Non Lineaire de Nice, and CNRS, UMR 6618 1361 Route des Lucioles, F-06560 Valbonne (France)

    2011-04-15T23:59:59.000Z

    The ac Stark effect is a well-known, well-established effect associated with the displacement of the atomic energy levels in the presence of an electromagnetic (e.m.) field. As the origin of the e.m. field is irrelevant, a self-induced ac Stark effect should be present in a laser. However, not only has this effect never been reported but it is not included in any laser model. Here, we show that a self-induced ac Stark shift does exist in the theoretical description of a two-level laser, provided that the reduced equations are derived not from the rotating-wave approximation, but from the full density matrix formulation. Interesting fundamental consequences are discussed and quantitative estimates of the self-induced frequency shift resulting from the laser field's ac Stark shift are obtained for a variety of lasers. We find that the effect is generally small but (at least in some cases) measurable and that the transfer of laser amplitude noise into frequency noise may play a role in future, ultrahigh-precision metrological applications.

  15. www.glasgow.ac.uk/library The University Library

    E-Print Network [OSTI]

    Guo, Zaoyang

    www.glasgow.ac.uk/library The University Library for staff #12;www.facebook.com/uofglibrary twitter.com/uofglibrary instagram.com/uoglibrary Library Blog universityofglasgowlibrary.wordpress.com Welcome to the University Library Where is the Library? It's on Hillhead Street, next to the Hunterian Art Gallery, at the heart

  16. Glasgow Theses Service http://theses.gla.ac.uk/

    E-Print Network [OSTI]

    Singer, Jeremy

    transmission and the ecological context. PhD thesis. http://theses.gla.ac.uk/3768/ Copyright and moral rights first obtaining permission in writing from the Author The content must not be changed in any way or sold must be given #12;Disease transmission and the ecological context Angus Cameron BSc (Hons) This thesis

  17. FBDEditor: {ldalove, atang34, syjsmk, jbyoo}@konkuk.ac.kr

    E-Print Network [OSTI]

    }@konkuk.ac.kr : Programmable Logic Controller (PLC) . Field Programmable Gate Array (FPGA) . PLC Function Controller (PLC) Field Programmable Gate Array (FPGA) . PLC IEC 61131-3 5 (LD: Ladder diagram) . FBD Function Block(FB) . FBD PLC . FPGA Hardware Description Language

  18. Glasgow Theses Service http://theses.gla.ac.uk/

    E-Print Network [OSTI]

    Glasgow, University of

    within the acceptance of the acceleration system. Ionisation cooling is the only viable cooling technique (2011) The Muon Ionisation Cooling Experiment. PhD thesis. http://theses.gla.ac.uk/2839/ Copyright-commercial research or study, without prior permission or charge This thesis cannot be reproduced or quoted

  19. Efficiency Ratings for the Daiken AC (Americas), Inc.

    E-Print Network [OSTI]

    Efficiency Ratings for the Daiken AC (Americas), Inc. Altherma Air-to-Water Source Heat Pump System is used to provide water heating, the EF for that separate water heater shall be used for performance Description Model No. Capacity (tons) Space Heating Space Cooling SEER Water Heating Efficiency

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

    SciTech Connect (OSTI)

    Dunn, Tom [Department of Physics, University of Minnesota, Minneapolis, Minnesota 55455 (United States); Kamenev, Alex [Department of Physics, University of Minnesota, Minneapolis, Minnesota 55455 (United States); Fine Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

    2014-06-21T23:59:59.000Z

    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.

  1. Transmission Planning Process and Opportunities for Utility-Scale Solar Engagement within the Western Electricity Coordinating Council (WECC)

    SciTech Connect (OSTI)

    Hein, J.; Hurlbut, D.; Milligan, M.; Coles, L.; Green, B.

    2011-11-01T23:59:59.000Z

    This report is a primer for solar developers who wish to engage directly in expediting the regulatory process and removing market barriers related to policy and planning. Market barriers unrelated to technology often limit the expansion of utility-scale solar power, even in areas with exceptional resource potential. Many of these non-technical barriers have to do with policy, regulation, and planning, and hardly ever do they resolve themselves in a timely fashion. In most cases, pre-emptive intervention by interested stakeholders is the easiest way to remove/address such barriers, but it requires knowing how to navigate the institutional waters of the relevant agencies and boards. This report is a primer for solar developers who wish to engage directly in expediting the regulatory process and removing market barriers related to policy and planning. It focuses on the Western Interconnection (WI), primarily because the quality of solar resources in the Southwest makes utility-scale concentrating solar power (CSP) and photovoltaics (PV) economically feasible, and because the relevant institutions have evolved in a way that has opened up opportunities for removing non-technical market barriers. Developers will find in this report a high-level field manual to identify the venues for mitigating and possibly eliminating systemic market obstacles and ensuring that the economic playing field is reasonably level. Project-specific issues such as siting for transmission and generation resources are beyond the scope of this report. Instead, the aim is to examine issues that pervasively affect all utility-scale PV and CSP in the region regardless of where the project may be. While the focus is on the WI, many of the institutions described here also have their counterparts in the Eastern and the Texas interconnections. Specifically, this report suggests a number of critical engagement points relating to generation and transmission planning.

  2. Sensorless Direct Torque Control For Salient Pole PMSM Based on Extended Kalman Filter Fed By AC/DC/AC Converter

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Sensorless Direct Torque Control For Salient ­ Pole PMSM Based on Extended Kalman Filter Fed By AC is proposed. The Direct Torque Control (DTC) technique for PMSM is receiving increasing attention due on the stochastic intromission, in others words, noise. The PMSM is fed by an indirect power electronic converter

  3. Tel: +44 (0) 1603 591574 Email: business@uea.ac.uk Web: www.uea.ac.uk/business Experts model buyer behaviour

    E-Print Network [OSTI]

    Everest, Graham R

    Tel: +44 (0) 1603 591574 Email: business@uea.ac.uk Web: www.uea.ac.uk/business Experts model buyer their customers to make buying decisions. When you are in the business of printing newspapers, accurate ­ the UK's largest independently-owned regional media business ­ on a project which saw academics from

  4. Approaches to building single-stage AC/AC conversion switch-mode audio power Petar Ljusev and Michael A.E. Andersen

    E-Print Network [OSTI]

    power amplifiers with a separate power supply, it is expected that direct conversion will provide better performance. It is also quite appealing for the Active Trans- ducer (AT) [2] approach for direct conversionApproaches to building single-stage AC/AC conversion switch-mode audio power amplifiers Petar

  5. Development Office, Trinity Hall, Cambridge, CB2 1TJ www.trinhall.cam.ac.uk fundraising@trinhall.cam.ac.uk

    E-Print Network [OSTI]

    Lasenby, Joan

    Development Office, Trinity Hall, Cambridge, CB2 1TJ www.trinhall.cam.ac.uk fundraising@trinhall.cam.ac.uk Tel: 01223 766345 Fax: 01223 765157 Trinity Hall Cambridge registered charity number 1137458 Making of financial background, and we are committed to nurturing the talent of the diverse Trinity Hall community

  6. Prebreakdown and breakdown phenomena in large oil gaps under AC

    SciTech Connect (OSTI)

    Saker, A.; Gournay, P.; Lesaint, O.; Tobazeon, R. [CNRS, Grenoble (France). Lab. d`Electrostatique et de Materiaux Dielectriques; Trinh, N.G. [Inst. de Recherche d`Hydro-Quebec, Varennes, Quebec (Canada); Boisdon, C. [Jeumont-Schneider Transformateurs, Lyon (France)

    1996-12-31T23:59:59.000Z

    This paper presents a study of prebreakdown and breakdown phenomena under AC voltage in mineral oil in large gaps to 60 cm. The investigations presented concern the study of streamers and the measurement of breakdown voltages in rod-plane and sphere-plane gaps. Also, the influence of a contamination by solid particles in the oil has been considered. A specific breakdown mode under AC voltage is evidenced, where bursts of streamers lead to the lowest breakdown fields recorded. Numerical values of the mean field in oil required for direct or burst breakdown modes are derived from the experiments. As a consequence, the great sensitivity to the presence of particles on EHV transformers insulation with large oil gaps is pointed out.

  7. On-Chip AC self-test controller

    DOE Patents [OSTI]

    Flanagan, John D. (Rhinebeck, NY); Herring, Jay R. (Poughkeepsie, NY); Lo, Tin-Chee (Fishkill, NY)

    2009-09-29T23:59:59.000Z

    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.

  8. SNL software manual for the ACS Data Analytics Project.

    SciTech Connect (OSTI)

    Stearley, Jon R.; McLendon, William Clarence, III; Rodrigues, Arun F.; Williams, Aaron S.; Hooper, Russell Warren; Robinson, David Gerald; Stickland, Michael G.

    2011-10-01T23:59:59.000Z

    In the ACS Data Analytics Project (also known as 'YumYum'), a supercomputer is modeled as a graph of components and dependencies, jobs and faults are simulated, and component fault rates are estimated using the graph structure and job pass/fail outcomes. This report documents the successful completion of all SNL deliverables and tasks, describes the software written by SNL for the project, and presents the data it generates. Readers should understand what the software tools are, how they fit together, and how to use them to reproduce the presented data and additional experiments as desired. The SNL YumYum tools provide the novel simulation and inference capabilities desired by ACS. SNL also developed and implemented a new algorithm, which provides faster estimates, at finer component granularity, on arbitrary directed acyclic graphs.

  9. Variable Frequency AC Drives for Cooling Tower Energy Efficiency

    E-Print Network [OSTI]

    Corey, R. W.

    1982-01-01T23:59:59.000Z

    speed fan drives. Fan speed is reduced to yield specific water temperatures at thermal conditions less difficult than design. The reduced air flow is accomplished by reduced fan power consumption, resulting in optimum cooling tower operation... and economics. Automatic fan speed control by sensing cold water temperature is the economic essence of the application of adjustable frequency power to A-C fan motors. 2.2 Cell Partitions In some multi-cell mechanical-draft cooling towers, the isolation...

  10. Hybrid immersed interface-immersed boundary methods for AC dielectrophoresis

    SciTech Connect (OSTI)

    Hossan, Mohammad Robiul [School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920 (United States); Department of Engineering and Physics, University of Central Oklahoma, Edmond, OK 73034-5209 (United States); Dillon, Robert [Department of Mathematics, Washington State University, Pullman, WA 99164-3113 (United States); Dutta, Prashanta, E-mail: dutta@mail.wsu.edu [School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920 (United States)

    2014-08-01T23:59:59.000Z

    Dielectrophoresis, a nonlinear electrokinetic transport mechanism, has become popular in many engineering applications including manipulation, characterization and actuation of biomaterials, particles and biological cells. In this paper, we present a hybrid immersed interface–immersed boundary method to study AC dielectrophoresis where an algorithm is developed to solve the complex Poisson equation using a real variable formulation. An immersed interface method is employed to obtain the AC electric field in a fluid media with suspended particles and an immersed boundary method is used for the fluid equations and particle transport. The convergence of the proposed algorithm as well as validation of the hybrid scheme with experimental results is presented. In this paper, the Maxwell stress tensor is used to calculate the dielectrophoretic force acting on particles by considering the physical effect of particles in the computational domain. Thus, this study eliminates the approximations used in point dipole methods for calculating dielectrophoretic force. A comparative study between Maxwell stress tensor and point dipole methods for computing dielectrophoretic forces are presented. The hybrid method is used to investigate the physics of dielectrophoresis in microfluidic devices using an AC electric field. The numerical results show that with proper design and appropriate selection of applied potential and frequency, global electric field minima can be obtained to facilitate multiple particle trapping by exploiting the mechanism of negative dielectrophoresis. Our numerical results also show that electrically neutral particles form a chain parallel to the applied electric field irrespective of their initial orientation when an AC electric field is applied. This proposed hybrid numerical scheme will help to better understand dielectrophoresis and to design and optimize microfluidic devices.

  11. Measurements of AC Losses and Current Distribution in Superconducting Cables

    SciTech Connect (OSTI)

    Nguyen, Doan A [Los Alamos National Laboratory (LANL); Ashworth, Stephen P [Los Alamos National Laboratory (LANL); Duckworth, Robert C [ORNL; Carter, Bill [AMSC; Fleshler, Steven [AMER Superconductor Corp, Devens, MA 01434

    2011-01-01T23:59:59.000Z

    This paper presents our new experimental facility and techniques to measure ac loss and current distribution between the layers for High Temperature Superconducting (HTS) cables. The facility is powered with a 45 kVA three-phase power supply which can provide three-phase currents up to 5 kA per phase via high current transformers. The system is suitable for measurements at any frequency between 20 and 500 Hz to better understand the ac loss mechanisms in HTS cables. In this paper, we will report techniques and results for ac loss measurements carried out on several HTS cables with and without an HTS shielding layer. For cables without a shielding layer, care must be taken to control the effect of the magnetic fields from return currents on loss measurements. The waveform of the axial magnetic field was also measured by a small pick-up coil placed inside a two-layer cable. The temporal current distribution between the layers can be calculated from the waveform of the axial field.

  12. Assessment of US electric vehicle programs with ac powertrains

    SciTech Connect (OSTI)

    Kevala, R.J. (Booz, Allen and Hamilton, Inc., Bethesda, MD (USA). Transportation Consulting Div.)

    1990-02-01T23:59:59.000Z

    AC powertrain technology is a promising approach to improving the performance of electric vehicles. Four major programs are now under way in the United States to develop ac powertrains: the Ford/General Electric single-shaft electric propulsion system (ETX-II), the Eaton dual-shaft electric propulsion system (DSEP), the Jet Propulsion Laboratories (JPL) integrated ac motor drive and recharge system, and the Massachusetts Institute of Technology (MIT) variable reluctance motor (VRM) drive. The JPL program is sponsored by EPRI; the other three programs are funded by the US Department of Energy. This preliminary assessment of the four powertrain programs focuses on potential performance, costs, safety, and commercial feasibility. Interviews with program personnel were supplemented by computer simulations of electric vehicle performance using the four systems. Each of the four powertrains appears superior to standard dc powertrain technology in terms of performance and weight. The powertrain technologies studied in this assessment are at varying degrees of technological maturity. One or more of the systems may be ready for incorporation into an advanced electric vehicle during the early 1990s. Each individual report will have a separate abstract. 5 refs., 37 figs., 29 tabs.

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

    DOE Patents [OSTI]

    Lu, Bin (Kenosha, WI); Habetler, Thomas G. (Snellville, GA); Zhang, Pinjia (Atlanta, GA); Theisen, Peter J. (West Bend, WI)

    2011-05-31T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Halimi, B. [Seoul National Univ., Seoul 151-744 (Korea, Republic of); Suh, K. Y. [Seoul National Univ., Seoul 151-744 (Korea, Republic of); PHILOSOPHIA, 1 Gwanak Ro, Gwanak Gu, Seoul 151-744 (Korea, Republic of)

    2012-07-01T23:59:59.000Z

    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)

  15. Nonlinear modal interaction in HVDC/AC power systems with dc power modulation

    SciTech Connect (OSTI)

    Ni, Y.X. [Tsinghua Univ., Beijing (China)] [Tsinghua Univ., Beijing (China); Vittal, V.; Kliemann, W.; Fouad, A.A. [Iowa State Univ., Ames, IA (United States)] [Iowa State Univ., Ames, IA (United States)

    1996-11-01T23:59:59.000Z

    In this paper investigation of nonlinear modal interaction using the normal form of vector fields technique is extended to HVDC/AC power systems with dc power modulation. The ac-dc interface equations are solved to form a state space model with second order approximation. Using the normal form technique, the system`s nonlinear dynamic characteristics are obtained. The proposed approach is applied to a 4-generator HVDC/AC test power system, and compare with the time domain solution.

  16. A reduction of proof complexity to computational complexity for AC0

    E-Print Network [OSTI]

    Krajíèek, Jan

    obtained. Ajtai [3, 4, 5], Beame 1 #12;et.al.[6] and Buss et.al.[9] proved lower bounds for AC0 Frege a prime p do not polyno- mially simulate polynomial calculus over Fp, and recently Buss, Kolodziejczyk by the depth 3 AC0 [p] system. Also, Buss et.al.[9] showed that the AC0 [p] Frege systems are polynomially

  17. DE-AC05-00OR22725 Modification No. 341

    E-Print Network [OSTI]

    Government) to enter into Contract DE-AC05-990R22725 for the Management and Operationofthe OakRidge National

  18. DE-AC05-00OR22725 Modification No. 341

    E-Print Network [OSTI]

    and the Contractor entered into Agreement No. DE-AC05-000R22725, or a Supplemental Agreement(s) thereto, providing

  19. Probing Mott lobes via the AC Josephson effect

    E-Print Network [OSTI]

    M. X. Huo; Ying Li; Z. Song; C. P. Sun

    2008-03-04T23:59:59.000Z

    The alternating-current (AC) Josephson effect is studied in a system consisting of two weakly coupled Bose Hubbard models. In the framework of the mean field theory, Gross-Pitaevskii equations show that the amplitude of the Josephson current is proportional to the product of superfluid order parameters. In addition, the chemical potential--current relation for a small size system is obtained via the exact numerical computation. This allows us to propose a feasible experimental scheme to measure the Mott lobes of the quantum phase transition.

  20. Analysis of the Irregular Pulsations of AC Her

    E-Print Network [OSTI]

    Z. Kollath; J. R. Buchler; T. Serre; J. Mattei

    1997-07-08T23:59:59.000Z

    The AAVSO lightcurve data of the irregularly pulsating star AC Herculis of the RV Tau class are analysed. The lightcurve is shown to be incompatible with a periodic, or even multiperiodic pulsation, even if allowance is made for evolution. Instead the best explanation is that the irregularly alternating cycles are a manifestation of low dimensional chaos. The lightcurve is found to be generated by a 3 or 4 dimensional dynamics -- 3 or 4 first order ODEs. The (Lyapunov) fractal dimension of the underlying dynamic attractor is computed to be d_L ~ 2.2, smaller than the value of d_L ~ 3.1 found for R Sct.

  1. A Generalized Class of Stationary Frame-Current Controllers for Grid-Connected AC–DC Converters

    E-Print Network [OSTI]

    Hwang, J. George

    Within power systems, high-power pulsewidth-modulated ac-dc converters are used in flexible ac transmission systems controllers and for interfacing renewable energy sources to the grid. These converters traditionally ...

  2. For information on current fee levels, see: www.strath.ac.uk/registry/students/finance

    E-Print Network [OSTI]

    Mottram, Nigel

    Fees For information on current fee levels, see: www.strath.ac.uk/registry/students/finance How Enquiries can be made to either of the following in the Department of Accounting & Finance: Professor Dick Davies Course Director, Investment & Finance t: +44 (0)141 548 3710 e: jr.davies@strath.ac.uk Barbara

  3. Contract Number: DE-AC05-76RL01830 Modification M881

    E-Print Network [OSTI]

    Contract Number: DE-AC05-76RL01830 Modification M881 B-i Part I ­ The Schedule Section B Supplies.......................................................1 #12;Contract Number: DE-AC05-76RL01830 Modification M881 B-1 B­1 Designation of Work) [M881] B­3 Estimated Fee Base and Total Available Performance Fees In FY12, the total available

  4. Lurching towards markets for power: China's electricity policy 19852007 Xiaoli Zhao a,c,

    E-Print Network [OSTI]

    Lyon, Thomas P.

    Institute for Low Carbon Economy and Trade, North China Electric Power University, Beijing, China a r t i cLurching towards markets for power: China's electricity policy 1985­2007 Xiaoli Zhao a,c, , Thomas P. Lyon b , Cui Song a,c a School of Economics and Management, North China Electric Power University

  5. Bone Motion Analysis From Dynamic MRI: Ac-quisition and Tracking

    E-Print Network [OSTI]

    Gilles, Benjamin

    of mechanical overload, impingement or femoral head instability. For both diagnosis and surgical planning, an acBone Motion Analysis From Dynamic MRI: Ac- quisition and Tracking INTRODUCTION Periacetabular- curate estimate of hip joint bone motion is required. Orthopedists can use animated 3D models, prior

  6. Control of Parallel-Connected Bidirectional AC-DC Converters in Stationary Frame for Microgrid

    E-Print Network [OSTI]

    Teodorescu, Remus

    Sistemes Automàtica i Informàtica Industrial Universitat Politècnica de Catalunya Abstract. In this paper, parallel-connected bidirectional converters for AC and DC hybrid microgrid application energy sources [3-6]. A hybrid microgrid can be made up of distributed renewable source, AC and DC common

  7. 80 IAEI NEWS May . June 2012 www.iaei.org Microinverters and ac Pv Modules

    E-Print Network [OSTI]

    Johnson, Eric E.

    and code require- ments. However, they are different from the typical PV string inverters that use multiple80 IAEI NEWS May . June 2012 www.iaei.org Microinverters and ac Pv Modules M icroinverters and AC PV modules are becom- ing very common in residential and small commercial PV systems. See photos 1

  8. Time-Resolved Magnetic Flux and AC-Current Distributions in Superconducting YBCO Thin Films and

    E-Print Network [OSTI]

    Shaw, Leah B.

    Time-Resolved Magnetic Flux and AC-Current Distributions in Superconducting YBCO Thin Films magnetic field. We study the interaction behavior of YBCO thin films in an ac transport current and a dc the calibrated field profiles. The current density evolution in YBCO thin films is studied by TRMOI as a function

  9. DNA MOLECULAR WIRE-BASED NANOELECTRONICS: NEW INSIGHT AND HIGH FREQUENCY AC ELECTRICAL

    E-Print Network [OSTI]

    Kassegne, Samuel Kinde

    DNA MOLECULAR WIRE-BASED NANOELECTRONICS: NEW INSIGHT AND HIGH FREQUENCY AC ELECTRICAL the Thesis of Denni Ari Wibowo: DNA Molecular Wire-Based Nanoelectronics: New Insight and High Frequency AC alone. #12;v ABSTRACT OF THE THESIS DNA Molecular Wire-Based Nanoelectronics: New Insight and High

  10. The Hybrid Power Flow Controller A New Concept for Flexible AC Transmission

    E-Print Network [OSTI]

    Lehn, Peter W.

    large and costly projects. Over the years, environmental, right­of­way, and cost prob- lems have delayedThe Hybrid Power Flow Controller A New Concept for Flexible AC Transmission Jovan Z. Bebic Electric flow controller topologies are proposed for flexible AC transmission systems (FACTS). The first one

  11. Ultrafast high-pressure AC electro-osmotic pumps for portable biomedical microfluidics

    E-Print Network [OSTI]

    Bazant, Martin Z.

    Ultrafast high-pressure AC electro-osmotic pumps for portable biomedical microfluidics Chien details the development of an integrated AC electro-osmotic (ACEO) microfluidic pump for dilute (100 mM) biological solutions in separate microfluidic devices, with potential applications in portable

  12. Dumbarton Express Line DB heading to Stanford Oval. AC Transit Line U on Palm Drive.

    E-Print Network [OSTI]

    Dumbarton Express Line DB heading to Stanford Oval. AC Transit Line U on Palm Drive. Photo: Karl Nielsen Photo: Dong Wang Schedules: AC Transit Line U Dumbarton Express Line DB Connections with BART Transit Line U Line U provides express service between Stanford and the Fremont BART station. Other East

  13. * jafleeman@aep.com EHV AC and HVDC Transmission Working Together to Integrate Renewable Power

    E-Print Network [OSTI]

    McCalley, James D.

    * jafleeman@aep.com EHV AC and HVDC Transmission Working Together to Integrate Renewable Power J. A current (EHV AC) and high voltage direct current (HVDC) transmission systems and advocates a hybrid as a high capacity platform for system integration. HVDC transmission offers express, efficient delivery

  14. Fabrication of Superhydrophobic Fiber Coatings by DC-Biased AC-Electrospinning

    E-Print Network [OSTI]

    Tafreshi, Hooman Vahedi

    Fabrication of Superhydrophobic Fiber Coatings by DC-Biased AC-Electrospinning Fredrick O. Ochanda DC-biased AC-electrospinning. Superhydrophobic surfaces with water contact angles greater than 150 on superhydrophobicity. VC 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: 1112­1119, 2012 Key words: superhydrophobic

  15. Fabrication of Superhydrophobic Fiber Coatings by DC-Biased AC-Electrospinning

    E-Print Network [OSTI]

    Tafreshi, Hooman Vahedi

    Fabrication of Superhydrophobic Fiber Coatings by DC-Biased AC-Electrospinning Fredrick O. Ochanda DC-biased AC-electrospinning. Superhydrophobic surfaces with water contact angles greater than 150 Superhydrophobicity is achieved by combining nano- or microscale roughness with a low-surface free energy material

  16. Cost vs. performance ... Gwyn Griffiths email: gxg@noc.soton.ac.uk http://www.noc.soton.ac.uk/OED/gxg/

    E-Print Network [OSTI]

    Griffiths, Gwyn

    and safety-related costs are estimated to be 25% of the cost of the capital items. End of life disposal cost will be 5% of the capital cost. #12;Cost vs. performance ... Gwyn Griffiths email: gxg@noc.soton.ac.uk http://www.noc.soton.ac.uk/OED/gxg/ Cost & performance of Li-Po secondary batteries Component Capital cost Amortised cost per kWh Cost per

  17. 851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161

    E-Print Network [OSTI]

    ­ Western Interconnection (WECC) 5 WECC 10 and 20 Year Plans § In 2007, WECC's Transmission Expansion, WECC expanded this effort under the Regional Transmission Expansion Project (RTEP) project and agreed to develop "Transmission Plans" in 2011 and 2013 #12;7/26/2012 4 WECC 10 and 20 Year Plans The first 10 year

  18. COUNTRY INSTITUTION DATE WEB ADDRESS IRAN University of Art Isfahn 08.03.2007 http://www.aui.ac.ir

    E-Print Network [OSTI]

    Di Pillo, Gianni

    COUNTRY INSTITUTION DATE WEB ADDRESS IRAN University of Art Isfahn 08.03.2007 http://www.aui.ac.ir IRAN Isfahn University of Technology 08.03.2007 http://www.iut.ac.ir IRAN The University of Isfahn 15/03/2011 http://www.ui.ac.ir IRAN Shahid Bahonar University of Kermn 06.06.2005 http

  19. AC Loss Reduction in Filamentized YBCO Coated Conductors with Virtual Transverse Cross-cuts

    SciTech Connect (OSTI)

    Zhang, Yifei [ORNL; Duckworth, Robert C [ORNL; Ha, Tam T [ORNL; List III, Frederick Alyious [ORNL; Gouge, Michael J [ORNL; Chen, Y [SuperPower Incorporated, Schenectady, New York; X, Xiong, [SuperPower Incorporated, Schenectady, New York; Selvamanickam, V. [SuperPower Incorporated, Schenectady, New York

    2011-01-01T23:59:59.000Z

    While the performance of YBa{sub 2}Cu{sub 3}O{sub 7-x} (YBCO)-based coated conductors under dc currents has improved significantly in recent years, filamentization is being investigated as a technique to reduce ac loss so that the 2nd generation (2G) high temperature superconducting (HTS) wires can also be utilized in various ac power applications such as cables, transformers and fault current limiters. Experimental studies have shown that simply filamentizing the superconducting layer is not effective enough to reduce ac loss because of incomplete flux penetration in between the filaments as the length of the tape increases. To introduce flux penetration in between the filaments more uniformly and further reduce the ac loss, virtual transverse cross-cuts were made in superconducting filaments of the coated conductors fabricated using the metal organic chemical vapor deposition (MOCVD) method. The virtual transverse cross-cuts were formed by making cross-cuts (17 - 120 {micro}m wide) on the IBAD (ion beam assisted deposition)-MgO templates using laser scribing followed by depositing the superconducting layer ({approx} 0.6 {micro}m thick). AC losses were measured and compared for filamentized conductors with and without the cross-cuts under applied peak ac fields up to 100 mT. The results were analyzed to evaluate the efficacy of filament decoupling and the feasibility of using this method to achieve ac loss reduction.

  20. Absorption of ac fields in amorphous indium-oxide films

    SciTech Connect (OSTI)

    Ovadyahu, Z. [Racah Institute of Physics, the Hebrew University, Jerusalem 91904 (Israel)

    2014-08-20T23:59:59.000Z

    Absorption data from applied ac fields in Anderson-localized amorphous indium-oxide (In{sub x}O) films are shown to be frequency and disorder dependent. The absorption shows a roll-off at a frequency which is much lower than the electron-electron scattering rate of the material when it is in the diffusive regime. This is interpreted as evidence for discreteness of the energy spectrum of the deeply localized regime. This is consistent with recent many-body localization scenarios. As the metal-insulator transition is approached, the absorption shifts to higher frequencies. Comparing with the previously obtained results on the crystalline version of indium-oxide (In{sub 2}O{sub 3?x}) implies a considerably higher inelastic electron-phonon scattering rate in the amorphous material. The range over which the absorption versus frequency decreases may indicate that a wide distribution of localization length is a common feature in these systems.

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

    SciTech Connect (OSTI)

    Miyamoto, N., E-mail: nmiyamot@mail.doshisha.ac.jp; Okajima, Y.; Wada, M. [Graduate School of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321 (Japan)] [Graduate School of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321 (Japan)

    2014-02-15T23:59:59.000Z

    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.

  2. Test plan for performance testing of the Eaton AC-3 electric vehicle

    SciTech Connect (OSTI)

    Crumley, R.L.; Heiselmann, H.W.

    1985-04-01T23:59:59.000Z

    An alternating current (ac) propulsion system for an electric vehicle has been developed and tested by the Eaton Corporation. The test bed vehicle is a modified 1981 Mercury Lynx. The test plan has been prepared specifically for the third modification to this test bed and identified as the Eaton AC-3. The scope of the EG and G testing at INEL to be done on the Eaton AC-3 will include coastdown and dynamometer tests but will not include environmental, on-road, or track testing. Coastdown testing will be performed in accordance with SAE J-1263 (SAE Recommended Practice for Road Load Measurement and Dynamometer Simulation Using Coastdown Techniques).

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

    DOE Patents [OSTI]

    Foltyn, Stephen R. (Los Alamos, NM); Jia, Quanxi (Los Alamos, NM); Arendt, Paul N. (Los Alamos, NM); Holesinger, Terry G. (Los Alamos, NM); Wang, Haiyan (Los Alamos, NM)

    2009-09-22T23:59:59.000Z

    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.

  4. EMTP modeling of CIGRE benchmark based HVDC transmission system operating with weak AC systems

    SciTech Connect (OSTI)

    Sood, V.K. [Hydro-Quebec, Varennes, Quebec (Canada); Khatri, V.; Jin, H. [Concordia Univ., Montreal, Quebec (Canada). Dept. of Electrical and Computer Engineering

    1995-12-31T23:59:59.000Z

    An EMTP based study of a CIGRE benchmark based HVDC system operating with weak ac systems is carried out. The modeled system provides a starting point for (a) educators teaching HVDC transmission courses and (b) for utility planners to develop their own low-cost dedicated digital simulators for training purposes. In this paper, modeling details of the ac-dc system, dc converters and control are presented. To validate the control schemes presented, the HVDC system is tested under ac-dc fault conditions. Results obtained from an EMTP-based study under these fault conditions are also presented in this paper.

  5. Dynamic performance of a STATCON at an HVDC inverter feeding a very weak AC system

    SciTech Connect (OSTI)

    Zhuang, Y.; Menzies, R.W. [Univ. of Manitoba, Winnipeg, Manitoba (Canada)] [Univ. of Manitoba, Winnipeg, Manitoba (Canada); Nayak, O.B. [HVDC Research Centre, Winnipeg, Manitoba (Canada)] [HVDC Research Centre, Winnipeg, Manitoba (Canada); Turanli, H.M. [Manitoba Hydro, Winnipeg, Manitoba (Canada)] [Manitoba Hydro, Winnipeg, Manitoba (Canada)

    1996-04-01T23:59:59.000Z

    This paper investigates the dynamic performance of the advanced static var compensator or STATCON at a high voltage direct current (HVDC) converter terminal where the ac system has a very low short circuit ratio (SCR). The STATCON is based on a nine-level GTO thyristor inverter. The studies include operating characteristics of the STATCON under various ac and dc disturbances. The simulation results are compared with other types of reactive power compensation options available for such applications. It is shown that the STATCON has clear advantages over the other compensators, in areas such as; fault response time, voltage support ability, and dc recovery, while operating with very weak ac systems.

  6. Int. J. Critical Infrastructures, Vol. 3, Nos. 1/2, 2007 235 Copyright 2007 Inderscience Enterprises Ltd.

    E-Print Network [OSTI]

    Ford, Andrew

    Council (WECC). We present simulations to show the change in the WECC system over 20 years. We explain-term model. The usefulness of the model is illustrated by showing simulated impacts on the WECC system due

  7. Distributed Energy Resource Optimization Using a Software as Service (SaaS) Approach at the University of California, Davis Campus

    E-Print Network [OSTI]

    Michael, Stadler

    2011-01-01T23:59:59.000Z

    SaaS TCF TOU UCD USDOE WAPA WECC Building Automation SystemCoordinating Council (WECC), and the emissions represent theother words, electricity in WECC is assumed fully fungible

  8. Renewable Portfolio Standards in the United States - A Status Report with Data Through 2007

    E-Print Network [OSTI]

    Wiser, Ryan

    2008-01-01T23:59:59.000Z

    PUC PV REC RPS SEP TWh WECC WREGIS alternative complianceoriginating within M-RETS; OR: WECC for unbundled RECs, U.S.portion of WECC and delivered to LSE for renewable

  9. Mass Market Demand Response and Variable Generation Integration Issues: A Scoping Study

    E-Print Network [OSTI]

    Cappers, Peter

    2012-01-01T23:59:59.000Z

    D.C. E-Three (2011) WECC EDT Phase 2 EIM Benefits Analysis &2011. 23 pages. NREL/TP-5500-49218. WECC (2010) ProposedConcepts For the WECC Efficient Dispatch Toolkit Energy

  10. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01T23:59:59.000Z

    Cycle Water Consumption for WECC NERC Region ElectricityCycle Water Withdrawals for WECC NERC Region ElectricityTRE TS&D USDA USGS VC W WECC WSI International Organization

  11. Physical Impacts of Climate Change on the Western US Electricity System: A Scoping Study

    E-Print Network [OSTI]

    Coughlin, Katie

    2008-01-01T23:59:59.000Z

    Lett. 34:L19703. [46] WECC 2005. Power Supply Assessment.=index&req=getit&lid [56] WECC Planning Data White Paper,Coordinating Council (WECC) [46, 55, 56], while our

  12. Exploration of Resource and Transmission Expansion Decisions in the Western Renewable Energy Zone Initiative

    E-Print Network [OSTI]

    Mills, Andrew D

    2011-01-01T23:59:59.000Z

    Investments in the WECC. ” The Electricity Journal 22(9):Coordinating Council (WECC). In Section 3 we examine theannual energy demand in the WECC with new RE for a target

  13. Demand Response Spinning Reserve Demonstration -- Phase 2 Findings from the Summer of 2008

    E-Print Network [OSTI]

    Eto, Joseph H.

    2010-01-01T23:59:59.000Z

    than required by NERC and WECC reliability rules. 2. TheRMSE SCADA SCE SDP VHF WAN WECC Air conditioning AutonomousElectric Coordinating Council (WECC) rules for contingency

  14. Commercial and Industrial Base Intermittent Resource Management Pilot

    E-Print Network [OSTI]

    Kiliccote, Sila

    2011-01-01T23:59:59.000Z

    Grid in accordance with WECC standards. Operating Reserves 5required to meet NERC and WECC reliability standards. Theseand Operator (CAISO 2010c). WECC Standard BAL-STD-002-0 –

  15. The Implementation of California AB 32 and its Impact on Wholesale Electricity Markets

    E-Print Network [OSTI]

    Bushnell, Jim B

    2007-01-01T23:59:59.000Z

    the dirtiest plants in the WECC fall into two categories,Capacity factors of non-Cal WECC plants (> 75 MW) with CO2consumed elsewhere in the WECC. If those regions are not

  16. Cap-and-Trade Modeling and Analysis: Congested Electricity Market Equilibrium

    E-Print Network [OSTI]

    Limpaitoon, Tanachai

    2012-01-01T23:59:59.000Z

    2.4 Case Study: WECC 225-Bus2.4.1 Characteristics of the WECC 225-Bus3.2.1 Characteristics of the WECC 225-Bus System . . . . . .

  17. Exploration of Resource and Transmission Expansion Decisions in the Western Renewable Energy Zone Initiative

    E-Print Network [OSTI]

    Mills, Andrew

    2010-01-01T23:59:59.000Z

    Investments in the WECC. ” The Electricity Journal 22(9):when unbundled RECs are allowed on a WECC-wide basis.renewable energy costs WECC-wide by using RECs is found to

  18. Assessing Vehicle Electricity Demand Impacts on California Electricity Supply

    E-Print Network [OSTI]

    McCarthy, Ryan W.

    2009-01-01T23:59:59.000Z

    System Operator. WECC (2006) Information Summary, Westernx SDG&E SMR SMUD TID v VMT WECC San Diego Gas & ElectricCoordinating Council (WECC) differ somewhat from the CEC and

  19. A Regional Approach to Market Monitoring in the West

    E-Print Network [OSTI]

    Barmack, Matthew; Kahn, Edward; Tierney, Susan; Goldman, Charles

    2006-01-01T23:59:59.000Z

    RTO SMUD SCED SCUC SSG-WI WAPA WECC Arizona Public Serviceaggregated form. For example, WECC publishes a daily reportfor three sub-regions of WECC, but the report does not

  20. Real Time Grid Reliability Management 2005

    E-Print Network [OSTI]

    Eto, Joe

    2008-01-01T23:59:59.000Z

    to be Incorporated into the WECC Phasor Network PMU Locationand Validation in the WECC. ” IEEE Transactions on PowerkV line in the Portland area. WECC system was separated into

  1. California's Greenhouse Gas Policies: Local Solutions to a Global Problem?

    E-Print Network [OSTI]

    Bushnell, Jim B; Peterman, Carla Joy; Wolfram, Catherine D

    2007-01-01T23:59:59.000Z

    RPS programs of states in the WECC is from The Database forRenewables Natural Gas Oil Coal AZ-NM OR-WA Rest of WECCTotal WECC % Total WECC Source: Platt’s Powerdat database.

  2. Driving Demand for Home Energy Improvements: Motivating residential customers to invest in comprehensive upgrades that eliminate energy waste, avoid high utility bills, and spur the economy

    E-Print Network [OSTI]

    Fuller, Merrian C.

    2011-01-01T23:59:59.000Z

    Conservation Corporation (WECC). The project‘s goal was toConservation Corporation (WECC was contracted to support theRESNET RFP RPV SMUD VCEM WECC ZIP Baltimore Neighborhood

  3. Mission Support Contract Attachment J.10 Contract No. DE-AC06...

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

    J.10 Contract No. DE-AC06-09RL14728 Modification 369 Table Of Contents J.10-1 SERVICE CONTRACT ACT: WAGE DETERMINATION ... 2 J.10-2 DAVIS...

  4. Rotating electrical machines - Part 22: AC generators for reciprocating internal combustion (RIC) engine driven generating sets

    E-Print Network [OSTI]

    International Electrotechnical Commission. Geneva

    1996-01-01T23:59:59.000Z

    Establishes the principal characteristics of a.c. generators under the control of their voltage regulators when used for reciprocating internal combustion engine driven generating sets. Supplements the requirements given in IEC 60034-1.

  5. 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...

  6. 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...

  7. AC losses in type-II superconductors induced by nonuniform fluctuations of external magnetic field

    E-Print Network [OSTI]

    as the economic gains of implementation of type-II superconductors in power transmission lines, current leads amplitude. The results can be used to estimate the AC losses in flywheels, electric motors, magnetic shields

  8. Development and application of setup for ac magnetic field in neutron scattering experiments

    SciTech Connect (OSTI)

    Klimko, Sergey [Laboratoire Leon Brillouin, 91191 Gif-sur-Yvette (France); Zhernenkov, Kirill; Toperverg, Boris P.; Zabel, Hartmut [Institut fuer Festkoerperphys IV, Ruhr Universitaet Bochum, D-44780 Bochum (Germany)

    2010-10-15T23:59:59.000Z

    We report on a new setup developed for neutron scattering experiments in periodically alternating magnetic fields at the sample position. The assembly consisting of rf generator, amplifier, wide band transformer, and resonance circuit. It allows to generate homogeneous ac magnetic fields over a volume of a few cm{sup 3} and variable within a wide range of amplitudes and frequencies. The applicability of the device is exemplified by ac polarized neutron reflectometry (PNR): a new method established to probe remagnetization kinetics in soft ferromagnetic films. Test experiments with iron films demonstrate that the ac field within the accessible range of frequencies and amplitudes produces a dramatic effect on the PNR signal. This shows that the relevant ac field parameters generated by the device match well with the scales involved in the remagnetization processes. Other possible applications of the rf unit are briefly discussed.

  9. acs_NL_nl-2011-03332e 1..8

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

    | Nano Lett. 2011, 11, 5071-5078 LETTER pubs.acs.orgNanoLett Hierarchically Porous Graphene as a LithiumAir Battery Electrode Jie Xiao,* , Donghai Mei, Xiaolin Li, ...

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

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

    & Publications Docket No. EERE-2012-BT-TP-0046; RIN 1904-AC52 Docket No. EERE-2012-BT-TP-0046 Ex Parte Communication Ex Parte Memorandum on Set Top Boxes and Network Equipment...

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

    SciTech Connect (OSTI)

    Kern, G.

    1999-04-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Chandler, K.; Eudy, L.

    2007-03-01T23:59:59.000Z

    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.

  13. AEP (Central and SWEPCO) - Coolsaver A/C Tune Up | Department...

    Office of Environmental Management (EM)

    Participating customers are eligible to receive a 75 coupon for use toward AC and heat pump efficiency services performed as a result of the program's tune-up analysis....

  14. Measured Savings of DC to AC Drive Retrofit in Plastic Extrusion

    E-Print Network [OSTI]

    Sfeir, R. A.

    2008-01-01T23:59:59.000Z

    This paper presents the potential electrical energy efficiency improvements for utilizing alternating current (AC) motors controlled by variable frequency drives (VFD) in place of direct current (DC) motors to drive plastic extrusion machines. A...

  15. ac gly3 h2o3: Topics by E-print Network

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

    limits. The models are used to estimate the benefits of electricity locational marginal pricing (LMP) that arise from de Gispert, Adri 354 www.eprg.group.cam.ac.uk...

  16. ac 66-1100 kv: Topics by E-print Network

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

    limits. The models are used to estimate the benefits of electricity locational marginal pricing (LMP) that arise from de Gispert, Adri 403 www.eprg.group.cam.ac.uk...

  17. ac metal-enclosed switchgear: Topics by E-print Network

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

    limits. The models are used to estimate the benefits of electricity locational marginal pricing (LMP) that arise from de Gispert, Adri 348 www.eprg.group.cam.ac.uk...

  18. Lift-and-Project Relaxations of AC Microgrid Distribution System Planning

    E-Print Network [OSTI]

    Taylor, Joshua A.

    2011-01-01T23:59:59.000Z

    We apply relaxation procedures to polynomial optimization problems that originate in transmission system planning, and obtain new convex formulations for the AC case. The approach is novel because the optimization is ...

  19. MIT Electric Vehicle Team Porsche designing a cooling system for the AC24 electric motor

    E-Print Network [OSTI]

    Meenen, Jordan N

    2010-01-01T23:59:59.000Z

    In this thesis I worked on the design and analysis of a cooling system for the electric motor of the MIT Electric Vehicle Team's Porsche 914 Battery Electric Vehicle. The vehicle's Azure Dynamics AC24 motor tended to ...

  20. Ultrafast High-pressure AC Electro-osmotic Pumps for Portable Biomedical Microfluidics

    E-Print Network [OSTI]

    Huang, Chien-Chih

    This paper details the development of an integrated AC electro-osmotic (ACEO) microfluidic pump for dilute electrolytes consisting of a long serpentine microchannel lined with three dimensional (3D) stepped electrode arrays. ...

  1. acs_JZ_jz-2011-01312e 1..6

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

    jz201312e | J. Phys. Chem. Lett. 2011, 2, 2859-2864 LETTER pubs.acs.orgJPCL Supercapacitor Capacitance Exhibits Oscillatory Behavior as a Function of Nanopore Size Guang...

  2. On-Orbit Performance of the ACS Solar Blind Channel Hien D. Trana

    E-Print Network [OSTI]

    Johns Hopkins University, Department of Physics and Astonomy, Advanced Camera for Surveys Team

    MAMA detector, the ACS/SBC has bright-object limits to protect it from radiation damage. For non the whole detector) limit is optical performance of the SBC is comparable

  3. www.arts.canterbury.ac.nz/internships Project Title: Campaign Assistant: FLUXX: Ideas in

    E-Print Network [OSTI]

    Hickman, Mark

    and supplier research using the internet and phone, client communication, picking up event equipment(s) for the academic adviser #12;www.arts.canterbury.ac.nz/internships Necessary Qualifications: Major/Minors(s): Coms

  4. High-Power Converters and AC Drives IEEE PESC2005 Tutorial

    E-Print Network [OSTI]

    Wu, Bin

    @ee.ryerson.ca http://www.ee.ryerson.ca/~bwu/ 2 High-Power Converters and AC Drives 1. Introduction 2. Cascaded H-Bridge Drives · High-Power Semiconductor Devices High-Power Converters and AC Drives Bin Wu 4High · Multilevel Voltage Source Inverters N dC Cascaded H-bridge (CHB) Inverter dC Two Level Inverter dC Flying

  5. www.ccfe.ac.uk CPS13.486 (August 2013)

    E-Print Network [OSTI]

    www.ccfe.ac.uk CPS13.486 (August 2013) InFusion Issue 04 | Summer 2013 The work at CCFE is funded by the RCUK Energy Programme and EURATOM Issue 04 |Summer 2013 www.ccfe.ac.uk InFusion CCFE Show and Tell visit to site power supplies Changing times for MAST #12;InFusion Issue 04 | Summer 2013 In this issue

  6. www.ccfe.ac.uk CPS13.1239 (March 2014)

    E-Print Network [OSTI]

    www.ccfe.ac.uk CPS13.1239 (March 2014) InFusion Issue 05 | Spring 2014 The work at CCFE is funded by the RCUK Energy Programme and EURATOM Issue 05 |Spring 2014 www.ccfe.ac.uk InFusion Themakingoffusion's see if it behaves hoW we expect... #12;InFusion Issue 05 | Spring 2014 In this issue 04 The story

  7. Ratchet Effect and Nonlinear Transport for Particles on Random Substrates with Crossed ac Drives

    E-Print Network [OSTI]

    C. Reichhardt; C. J. Olson Reichhardt

    2005-09-13T23:59:59.000Z

    We show in simulations that overdamped interacting particles in two dimensions with a randomly disordered substrate can exhibit novel nonequilibrium transport phenomena including a transverse ratchet effect, where a combined dc drive and circular ac drive produce a drift velocity in the direction transverse to the applied dc drive. The random disorder does not break any global symmetry; however, in two dimensions, symmetry breaking occurs due to the chirality of the circular drive. In addition to inducing the transverse ratchet effect, increasing the ac amplitude also strongly affects the longitudinal velocity response and can produce what we term an overshoot effect where the longitudinal dc velocity is higher in the presence of the ac drive than it would be for a dc drive alone. We also find a dynamical reordering transition upon increasing the ac amplitude. In the absence of a dc drive, it is possible to obtain a ratchet effect when the combined ac drives produce particle orbits that break a reflection symmetry. In this case, as the ac amplitude increases, current reversals can occur. These effects may be observable for vortices in type II superconductors as well as for colloids interacting with random substrates.

  8. Comparison of the Unique Mobility and DOE-developed ac electric drive systems

    SciTech Connect (OSTI)

    Cole, G.H.

    1993-01-01T23:59:59.000Z

    A comparison was made between the most recent DOE-developed AC electric vehicle drive systems and that which is independently under development by Unique Mobility of Golden, Colorado. The DOE-developed AC systems compared in this study are the Single-Shaft Electric Propulsion System (ETX-II) developed by Ford Motor Company and the General Electric Company under contract number DE-AC07-85NV10418, the Dual-Shaft Electric Propulsion (DSEP) System developed by Eaton Corporation under contract number DOE-AC08-84NV-10366, and the anticipated results of the Modular Electric Vehicle (MEV) system currently being developed by Ford and General Electric under contract number DE-AC07-90ID13019. The Unique Mobility brushless DC electric vehicle drive system represents their latest electric drive technology and is being developed in cooperation with BMW Technik Gmbh of Germany. Comparisons of specific volume, specific weight, efficiency and expected vehicle performance are made of the different systems based upon measured system performance data where available. One conclusion presented is that the Unique Mobility drive system under development with BMW appears to provide comparable performance to the AC systems studied.

  9. Low Cost Fabrication of 2G Wires for AC Applications

    SciTech Connect (OSTI)

    Kodenkandath, T.; List, F.A., III

    2005-09-15T23:59:59.000Z

    Ink-jet printing has been demonstrated as an adaptable technology for printing YBCO filaments using a Metal Organic (MO) YBCO precursor. The technology was demonstrated using AMSC's proprietary metal organic TFA-based YBCO precursor and a commercial piezoelectric print-head on RABiTS templates. Filaments with a width of 100 um and spacing of 200 um were successfully printed, decomposed and processed to YBCO. Critical currents of {approx} 200 A/cm-w were achieved in a series of filaments with a 2 mm width. The single nozzle laboratory printer used in the Phase 1 program is capable of printing {approx} 100 um wide single filaments at a rate of 8-10 cm/sec. The electrical stabilization of filaments with a Ag ink was also evaluated using ink-jet printing. The overall objective of the Phase 1 Project was the evaluation and demonstration of inkjet-printing for depositing YBCO filaments on textured templates (RABiTS, IBAD, ISD, etc. substrates) with properties appropriate for low loss ac conductors. Goals of the Phase 1 program included development of an appropriate precursor ink, demonstration of the printing process, processing and characterization of printed YBCO filaments and evaluation of the process for further development.

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

    DOE Patents [OSTI]

    Pulvirenti, Patricia P. (Chicago, IL); Jiles, David C. (Ames, IA)

    2001-08-14T23:59:59.000Z

    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.

  11. Improving ac motor efficiency with fuzzy logic energy optimizer

    SciTech Connect (OSTI)

    Spiegel, R.J.; Chappell, P.J.; Cleland, J.G.

    1994-08-01T23:59:59.000Z

    The paper discusses EPA's research program to develop fuzzy-logic-based energy optimizers for alternating-current (AC) induction motors driven by Adjustable Speed Drives (ASDs). The technical goals of the program are to increase the efficiency of ASD/motor combinations (especially when operating at off-rated torque/speed conditions), develop a generic controller for energy optimization that can be applied to a wide range of motors and ASDs regardless of size and application, and develop a controller for energy optimization that can eliminate the requirement for tachometer or encoder feedback, and still maintain the stability and response of closed-loop control. Electric motors use over 60% of the electrical power generated in the U.S. The U.S. population of approximately 1 billion motors use over 1700 billion kWh per year. Over 140 million new motors are sold each year. A review of the U.S. motor population reveals that 90% of the motors are less than 1 hp (fractional motors) in size, but use less than 10% of the electricity consumed by motors. More that 80% of the electricity used by motors is consumed by less than 1% of the motor population (motors greater than 20 hp). Thus, it is clear that large energy savings from improvement in motor efficiency could be achieved from a relatively small motor population.

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

    DOE Patents [OSTI]

    Lu, Bin (Kenosha, WI); Luebke, Charles John (Sussex, WI); Habetler, Thomas G. (Snellville, GA); Zhang, Pinjia (Atlanta, GA); Becker, Scott K. (Oak Creek, WI)

    2011-12-27T23:59:59.000Z

    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.

  13. Arnold Schwarzenegger REAL-TIME GRID RELIABILITY

    E-Print Network [OSTI]

    .....................................................6 1.1.1 Summary of Recommendations by WECC.....................................................6 1.1.2 WECC Voltage Stability Criteria ....................................................................9 1

  14. 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.

    E-Print Network [OSTI]

    Renewable Energy Laboratory (NREL) and Western Electricity Coordinating Council (WECC) to support in increased cycling of conventional fossil generation. Previous studies by NREL and WECC have corroborated

  15. Document 2006-17 September 19, 2006 Pacific Northwest Resource Adequacy Implementation Plan

    E-Print Network [OSTI]

    Coordinating Council (WECC) is developing guidelines to recommend appropriate methodologies for assessing resource adequacy. Although the NERC and WECC efforts act as drivers, momentum is also building within

  16. Document 2006-22 November 15, 2006 Pacific Northwest Resource Adequacy Warning Implementation Plan

    E-Print Network [OSTI]

    Coordinating Council (WECC) is developing guidelines to recommend appropriate methodologies for assessing resource adequacy. Although the NERC and WECC efforts act as drivers, momentum is also building within

  17. Strategic Planning

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

    a single BPA data repository * Data quality improvements * Improve model alignment with WECC planning data * Improve WECC base case coordination * Align the BPA data model with...

  18. Keep in mind, that with formality, often comes more of a standing...

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

    Advisor, Department of Energy (confirmed) Western Electricity Coordinating Council (WECC) RTEP Status Update Byron Woertz, Senior Project Manager, WECC (confirmed) Western...

  19. Copyright(c)2002 by Seoul National University Library. All rights reserved.(http://library.snu.ac.kr)

    E-Print Network [OSTI]

    .(http://library.snu.ac.kr) - 6 - 2.2.2 Dominance Based Crossover Operator for Evolutionary Multi-objective Algorithms [Rudenko et

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

    DOE Patents [OSTI]

    Gallegos-Lopez, Gabriel (Torrance, CA); Nagashima, James M. (Cerritos, CA); Perisic, Milun (Torrance, CA); Hiti, Silva (Redondo Beach, CA)

    2012-02-14T23:59:59.000Z

    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.

  1. Continuous Hyperplastic Models for Overconsolidated ClaysContinuous Hyperplastic Models for Overconsolidated Clays Visit us at: "www.technion.ac.il" and "www-civil.eng.ox.ac.uk"

    E-Print Network [OSTI]

    Houlsby, Guy T.

    Continuous Hyperplastic Models for Overconsolidated ClaysContinuous Hyperplastic Models for Overconsolidated Clays Visit us at: "www.technion.ac.il" and "www-civil.eng.ox.ac.uk" I. Einav and A.M. Puzrin for the formulation of realistic models for the triaxial behaviour of overconsolidated clays at both small and large

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

    DOE Patents [OSTI]

    Gallegos-Lopez, Gabriel (Torrance, CA); Nagashima, James M. (Cerritos, CA); Perisic, Milun (Torrance, CA); Hiti, Silva (Redondo Beach, CA)

    2012-06-05T23:59:59.000Z

    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.

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

    DOE Patents [OSTI]

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

    1987-07-30T23:59:59.000Z

    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.

  4. Quantum recurrence and fractional dynamic localization in ac-driven perfect state transfer Hamiltonians

    SciTech Connect (OSTI)

    Longhi, Stefano, E-mail: stefano.longhi@fisi.polimi.it

    2014-06-15T23:59:59.000Z

    Quantum recurrence and dynamic localization are investigated in a class of ac-driven tight-binding Hamiltonians, the Krawtchouk quantum chain, which in the undriven case provides a paradigmatic Hamiltonian model that realizes perfect quantum state transfer and mirror inversion. The equivalence between the ac-driven single-particle Krawtchouk Hamiltonian H{sup -hat} (t) and the non-interacting ac-driven bosonic junction Hamiltonian enables to determine in a closed form the quasi energy spectrum of H{sup -hat} (t) and the conditions for exact wave packet reconstruction (dynamic localization). In particular, we show that quantum recurrence, which is predicted by the general quantum recurrence theorem, is exact for the Krawtchouk quantum chain in a dense range of the driving amplitude. Exact quantum recurrence provides perfect wave packet reconstruction at a frequency which is fractional than the driving frequency, a phenomenon that can be referred to as fractional dynamic localization.

  5. Low AC Loss YBCO Coated Conductor Geometry by Direct Inkjet Printing

    SciTech Connect (OSTI)

    Rupich, Martin, Dr. [American Superconductor Corporation; Duckworth, Robert, Dr. [Oak Ridge National Laboratory

    2009-10-01T23:59:59.000Z

    The second generation (2G) high temperature superconductors (HTS) wire offers potential benefits for many electric power applications, including ones requiring filamentized conductors with low ac loss, such as transformers and fault current limiters. However, the use of 2G wire in these applications requires the development of both novel multi-filamentary conductor designs with lower ac losses and the development of advanced manufacturing technologies that enable the low-cost manufacturing of these filamentized architectures. This Phase I SBIR project focused on testing inkjet printing as a potential low-cost, roll-to-roll manufacturing technique to fabricate potential low ac loss filamentized architectures directly on the 2G template strips.

  6. Operated by the Association of Universities for Research in Astronomy, Inc., for the National Aeronautics and Space Administration Instrument Science Report ACS 2005-06

    E-Print Network [OSTI]

    Sirianni, Marco

    Aeronautics and Space Administration Instrument Science Report ACS 2005-06 Demonstration of a Significant examples where major scien- #12;Instrument Science Report ACS 2005-06 2 tific discoveries have only been

  7. Beam Sampling for the Infinite Hidden Markov Model Jurgen Van Gael jv279@cam.ac.uk

    E-Print Network [OSTI]

    Ghahramani, Zoubin

    267@cam.ac.uk Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, UK Yee Whye Teh Zoubin Ghahramani zoubin@eng.cam.ac.uk Department of Engineering, University of Cambridge, Cambridge CB2 models (Es- cobar & West, 1995; Rasmussen, 2000) for cluster- ing heterogeneous data and density

  8. The role of eddy currents and nanoparticle size on AC magnetic fieldinduced reflow in solder/magnetic nanocomposites

    E-Print Network [OSTI]

    McHenry, Michael E.

    The role of eddy currents and nanoparticle size on AC magnetic field­induced reflow in solder://jap.aip.org/about/rights_and_permissions #12;The role of eddy currents and nanoparticle size on AC magnetic field­induced reflow in solder be derived from eddy current losses in Cu planes in the substrate board. Eddy current heating in Cu sheets

  9. AC 263,222 for red rice control in soybeans and its potential injury to rice in a rotation

    E-Print Network [OSTI]

    Grymes, Charles Frost

    1993-01-01T23:59:59.000Z

    Field studies were conducted in 1991 and 1992 to evaluate the response of soybean, red rice, and rice the following year to AC 263,222 applied alone and in tank mixtures with imazethapyr or imazaquin. In 1991, AC 263,222 applied alone at 18, 36...

  10. Contact: Julie Goode, 0114 222 7018, j.k.goode@sheffield.ac.uk Interpersonal Skills for Community Support

    E-Print Network [OSTI]

    Stevenson, Mark

    revision guides, Kirby Lonsdale #12;Contact: Julie Goode, 0114 222 7018, j.k.goode@sheffield.ac.uk Study: · An awareness of good study practice in higher education; · Experience of communicating effectively, in bothContact: Julie Goode, 0114 222 7018, j.k.goode@sheffield.ac.uk Interpersonal Skills for Community

  11. Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830

    E-Print Network [OSTI]

    PNNL-20162 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Cultural February 2011 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Pacific Northwest is required. · Please be sure that any PDF submitted to DAHP has its cover sheet, figures, graphics

  12. IEEE ELECTRON DEVICE LETTERS, VOL. 18, NO. 2, FEBRUARY 1997 39 AC Hot-Carrier-Induced Degradation in

    E-Print Network [OSTI]

    Ng, Wai Tung

    IEEE ELECTRON DEVICE LETTERS, VOL. 18, NO. 2, FEBRUARY 1997 39 AC Hot-Carrier-Induced Degradation--Frequency-dependent ac-stress-induced degradation in NMOSFET's with N2O-grown and N2O-nitrided gate oxides was investigated. Suppressed device degradation is observed in both N2O-based devices as compared to SiO2 device

  13. Dynamic magnetization states of a spin valve in the presence of dc and ac currents: Synchronization, modification, and chaos

    E-Print Network [OSTI]

    Li, Charles

    Dynamic magnetization states of a spin valve in the presence of dc and ac currents: Synchronization and numerical calculations of dynamic magnetization states of a spin valve in the presence of dc and ac currents are expected to appear. In this paper, we consider a simple spin valve as a model system to study the problem

  14. STFC Introductory Summer School m.j.owens@reading.ac.uk18 Sept 2012 Solar Variability and

    E-Print Network [OSTI]

    STFC Introductory Summer School m.j.owens@reading.ac.uk18 Sept 2012 Solar Variability and Climate · The climate system · Solar variability · Solar effects on climate ­ Regional and global effects · The future? #12;STFC Introductory Summer School m.j.owens@reading.ac.uk Climate system #12;The source of much

  15. ACS Div of Fuel Chem Preprints 44:4, 1016-1019 (August, 1999) KINETICS OF HIGH PRESSURE CHAR OXIDATION

    E-Print Network [OSTI]

    Fletcher, Thomas H.

    ACS Div of Fuel Chem Preprints 44:4, 1016-1019 (August, 1999) KINETICS OF HIGH PRESSURE CHAR) by devolatilizing Pittsburgh #8 coal at #12;ACS Div of Fuel Chem Preprints 44:4, 1016-1019 (August, 1999) high

  16. 1 / 8 _atmark_@ http://www.zenhokyo.jp/index.html murasima-tky_atmark_umin.ac.jp

    E-Print Network [OSTI]

    Imai, Hiroshi

    3 (ERS) (CEE) (ITS) (CIDIR) http://icus.iis.u- tokyo.ac.jp/rnet_edr/index.php 3.11net2 ( 3.11net http://icus.iis.u- tokyo.ac.jp/rnet_edr/index.php 3.11net URL ( #12;

  17. Electric field and losses at AC self field mode in MF composites

    SciTech Connect (OSTI)

    Fukui, S.; Hlasnik, I.; Tsukamoto, O.; Amemiya, N. (Yokohama National Univ. (Japan)); Polak, M.; Kottman, P. (Slovak Academy of Science, Bratislava (Slovakia). Inst. of Electrical Engineering)

    1994-07-01T23:59:59.000Z

    Studies of the current-voltage characteristics of typical superconducting wires under static and dynamic conditions up to 50 Hz frequency have revealed much higher instantaneous local loss power densities in an external DC magnetic field than those which occur by magnetization in a transverse AC magnetic field. In this paper, the measured loss characteristics are compared with theoretical ones derived from the critical state model, and the self field AC loss are also estimated. Possible errors that can result by applying the critical state model are discussed.

  18. A robust coordinated control scheme for HVDC transmission with parallel AC systems

    SciTech Connect (OSTI)

    To, K.W.V.; David, A.K. (Hong Kong Polytechnic (Hong Kong). Dept. of Electrical Engineering); Hammad, A.E. (N.E. Swiss Power Co., Baden (Switzerland))

    1994-07-01T23:59:59.000Z

    This paper introduces a practical control philosophy for HVDC transmission in parallel operation to an AC system with particular emphasis on coordination of both transient and dynamic stability. Systematic development of the control scheme on the basis of on-line identification, optimal control and rule-based bang-optimal coordination principles is presented. Verification tests of the scheme on a physical HVDC/AC system simulator show that the simple control computer algorithm is practical and robust. The controller can successfully distinguish between different system fault severities and adapts its output signals to provide maximum synchronizing torque and ensure optimal damping of power oscillations.

  19. Contract No. DE-AC02-07CH11358 Contract Modification No. 0145

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

    H-11 H.8 PRIVACY ACT RECORDS H-12 H.9 ADDITIONAL DEFINITIONS H-12 H.10 SERVICE CONTRACT ACT OF 1965 (41 U.S.C. 35) H-14 Contract No. DE-AC02-07CH11358 Section H TOC...

  20. An empirical study of the economies of scale in AC transmission line construction costs

    E-Print Network [OSTI]

    Baldick, Ross

    1 An empirical study of the economies of scale in AC transmission line construction costs Krishnan data filed at the Federal Energy Regulatory Commission to empirically determine the cost of transmission projects completed between the years 1994 and 2000. We examine the economies of scale in the cost

  1. Techniques for energy conservation in ac motor-driven systems. Final report

    SciTech Connect (OSTI)

    Mohan, N.

    1981-09-01T23:59:59.000Z

    Techniques for energy conservation of reducing losses in ac motor-driven systems proposed by the technical community in response to surging cost of energy are evaluated and compared. Report objectives are to provide better understanding of underlying principles and to evaluate technical and economic viability of these techniques for various applications. An important aspect considered is the impact on electric utility system in terms of harmonics, power factor of operation, and Electro-Magnetic Interference (EMI). The techniques evaluated are: NASA Power Factor Controller, a simple device for reducing power losses in lightly loaded ac motors; wanlass motor modification, a scheme of reconnecting motor windings with capacitors in series, with the intention of improving the motor efficiencies under all loading conditions; conventional variable frequency solid-state inverters which can control the speed of ac motors by producing adjustable frequency ac voltage, with a significant potential for energy conservation in pumps and air-handling systems; and other variable frequency drives and schemes including cycloconverters, slip-recovery scheme, Exxon Alternating Current Synthesizer, Venturini conversion technique, permanent magnet synchronous motors, and a device called the Phase-Liner. The impact of rapid growth in semiconductors and magnetic materials technologies is also considered.

  2. Integrated Research Center http://www.kobe-u.ac.jp/kuirc/index.html

    E-Print Network [OSTI]

    Banbara, Mutsunori

    . Integrated Bio-refinery Research Project [ Project Leader: KONDO Akihiko ] Research Project for MembraneIntegrated Research Center http://www.kobe-u.ac.jp/kuirc/index.html In fiscal year 2013, the organization of the Integrated Research Center was changed into an interdisciplinary education and research

  3. http://www.ukro.ac.uk FP7 in 2013 making the most of the

    E-Print Network [OSTI]

    Royal Holloway, University of London

    , University of London 6 November 2012 Inga Benner inga.benner@bbsrc.ac.uk #12;UK Research Office · Based someone to speak to in the European Commission · Project management issues, reporting, audit · Wider (ICT) Nanosciences, Nanotechnologies, Materials and new Production Technologies (NMP) Energy

  4. Operation-Based Signal-Flow AC Analysis of Switching DCDC Converters in CCM and DCM

    E-Print Network [OSTI]

    Rincon-Mora, Gabriel A.

    Operation-Based Signal-Flow AC Analysis of Switching DC­DC Converters in CCM and DCM Dongwon Kwon (CCM and DCM) and insightful enough to derive directly from the waveforms of the circuit, not from- and discontinuous-conduction modes (CCM and DCM). To this end, for review, Sections II and III of the paper overview

  5. Non-Linear Continuum Regression Using Genetic Programming Ben.McKay@ncl.ac.uk

    E-Print Network [OSTI]

    Fernandez, Thomas

    Non-Linear Continuum Regression Using Genetic Programming Ben McKay Ben.McKay@ncl.ac.uk Mark Willis In this contribution, genetic programming is combined with continuum regression to produce two novel non-linear-based' strategy. Having discussed continuum regression, the modifications required to extend the algorithm for non-linear

  6. AC 2007-2003: UNDERWATER LEGO ROBOTICS: TESTING, EVALUATION & Adam Carberry, Tufts University

    E-Print Network [OSTI]

    AC 2007-2003: UNDERWATER LEGO ROBOTICS: TESTING, EVALUATION & REDESIGN Adam Carberry, Tufts from Tufts. He is also a research assistant at the Tufts University Center for Engineering Educational a difference in bringing engineering to K-12 education. He is also a research assistant at the Tufts University

  7. Modification No.0136 Contract No. DE-AC02-09CH11466

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    of the Princeton Plasma Physics Laboratory A Department of Energy National Laboratory Contract No. DE-AC02-09CH.2 Provide Effective and Efficient Science and Technology Project / Program / Facilities Management J-B-28 3 Financial Management System(s) J-B-42 6.2 Provide and Efficient, Effective, and Responsive Acquisition

  8. Microprocessor-based random PWM schemes for DC-AC power conversion

    SciTech Connect (OSTI)

    Hui, S.Y.R. [Univ. of Sydney, New South Wales (Australia). Dept. of Electrical Engineering] [Univ. of Sydney, New South Wales (Australia). Dept. of Electrical Engineering; [City Univ. of Hong Kong, Kowloon (Hong Kong). Dept. of Electronic Engineering; Oppermann, I.; Sathiakumar, S. [Univ. of Sydney, New South Wales (Australia). Dept. of Electrical Engineering] [Univ. of Sydney, New South Wales (Australia). Dept. of Electrical Engineering

    1997-03-01T23:59:59.000Z

    Two classes of microprocessor-based random PWM (RPWM) real-time schemes for dc-ac power conversion are compared and evaluated. Performance of the RPWM schemes based on the mathematical and logical approaches is examined. The proposed schemes exhibit excellent harmonic content with all low and high-order harmonics suppressed and are suitable for both MOSFET and IGBT inverters.

  9. Contract Number: DE-AC05-76RL01830 Modification M971

    E-Print Network [OSTI]

    that in consideration of the extension of Contract No. DE- AC05-76RL01830 (hereinafter referred to as "the PNNL Prime, Appendix H of the PNNL Prime Contract (hereinafter referred to as "the Facilities") and the right include any use authorized under the PNNL Prime Contract, or as otherwise agreed to by the Parties. 2

  10. DE-AC02-76SF00515 Contractor Performance Evaluation and

    E-Print Network [OSTI]

    Wechsler, Risa H.

    #12;#12;DE-AC02-76SF00515 Appendix B M544 FY 2008 Contractor Performance Evaluation and Measurement Plan for Management and Operations ofthe Stanford Linear Accelerator Center 10-03-07 09:58 RCVD J

  11. A Taxonomy of Routing Protocols for Wireless Sensor Networks Gergely Acs, Levente Buttyan

    E-Print Network [OSTI]

    Levente, Buttyán

    A Taxonomy of Routing Protocols for Wireless Sensor Networks Gergely ´Acs, Levente Butty application scenarios. In this work, we propose a taxonomy of sensor network routing protocols, and classify the mainstream protocols proposed in the literature using this taxonomy. We distinguish five families

  12. Estimation of Diffusion Coefficient of Lithium in Carbon Using AC Impedance Technique

    E-Print Network [OSTI]

    in a lithium-ion battery from ac impedance measurement is of great interest to us.1-6 Basically, the impedance are used to esti- mate this parameter. Among the methods developed to estimate Ds of a lithium-ion such as the steady-state lithium-ion concentration, c0 , surface con- centration, cs , of intercalation species

  13. A direct AC-to-DC converter topology with high-frequency isolation

    E-Print Network [OSTI]

    Sulistyono, Widodo

    1994-01-01T23:59:59.000Z

    disadvantages of the conventional approach are: it requires relatively large input ac filter components, requires two stages of rectification and of de filtering (i.e., at the front-end and output rectifiers), and exhibit poor overall input power factor...

  14. www.glasgow.ac.uk/ug/electronicsuestc Electronics and Electrical Engineering

    E-Print Network [OSTI]

    Guo, Zaoyang

    www.glasgow.ac.uk/ug/electronicsuestc - () Electronics and Electrical Engineering () #12;1 2 2013 2009 4 Electronics and Electrical Engineering, BEng Honours, 20139 160 1840 1872 30 1092 Electronic System Design Electromechanical Drive Technology Power Engineering Real Time Computing Systems

  15. http://www.essex.ac.uk/chimera/ CHIMERA WORKING PAPER NUMBER: 2005-07

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    http://www.essex.ac.uk/chimera/ CHIMERA WORKING PAPER NUMBER: 2005-07 CWP-2005-07-Lesnard-Social-Change-Fin.doc Social Change, Daily Life and the Internet Chimera Working Paper Number: 2005-07 Dr Laurent Lesnard1 Author's current address: laurent.lesnard@sciences-po.fr #12;CHIMERA WORKING PAPER NUMBER: 2005-07 CWP

  16. Eye-Tracker {eskim, jkim, btzhang} @ bi.snu.ac.kr

    E-Print Network [OSTI]

    Eye-Tracker ,, {eskim, jkim, btzhang} @ bi.snu.ac.kr Eye-Tracking Analysis of Attention . `' . . . Eye-Tracker . Eye-Tracker . . 1. , . `' , . . , . . , . 3 [1]. 1) fMRI, MEG, EEG 2) Eye-Tracker, Motion Tracker embodiment cognition 3

  17. Comparison of Two Autonomous AC-DC Converters for Piezoelectric Energy Scavenging Systems

    E-Print Network [OSTI]

    Boyer, Edmond

    - 1 - Comparison of Two Autonomous AC-DC Converters for Piezoelectric Energy Scavenging Systems E Cornaredo, Milan, Italy Abstract - Piezoelectric Energy Scavenging Systems (PESS) are used to convert of the output voltage of these transducers is needed. Since the output power level of the energy transducer can

  18. HST/ACS Direct Ages of the Dwarf Elliptical Galaxies NGC 147 and NGC 185

    E-Print Network [OSTI]

    Geha, M; Grocholski, A; Dolphin, A; van der Marel, R P; Guhathakurta, P

    2015-01-01T23:59:59.000Z

    We present the deepest optical photometry for any dwarf elliptical (dE) galaxy based on Hubble Space Telescope ACS observations of the Local Group dE galaxies NGC 147 and NGC 185. The resulting F606W and F814W color-magnitude diagrams are the first to reach below the main sequence turnoff in a dE galaxy, allowing us to determine full star formation histories in these systems. The ACS fields are located ~1.5 effective radii from the galaxy center to avoid photometric crowding. While our ACS pointings in both dEs show unambiguous evidence for old and intermediate age stars, the mean age in NGC 147 is ~ 4 Gyr younger as compared to NGC 185. In NGC 147, only 40% of stars were in place 12.5 Gyrs ago (z~5), with the bulk of the remaining stellar population forming between 5 to 7 Gyr. In contrast, 70% of stars were formed in NGC 185 field more than12.5 Gyr ago with the majority of the remaining population forming between 8 to 10 Gyr. Star formation ceased in both ACS fields at least 3 Gyr ago. Previous observations ...

  19. Environmental Regulatory Research Group (ERRG) www.surrey.ac.uk/errg

    E-Print Network [OSTI]

    Doran, Simon J.

    and contaminated land. Natural Resources Researchers within the group are focusing on forestry and oil exploitation management and to a sustainable use of the remaining oil resources. #12;www.surrey.ac.uk/errg Water The Group within four main areas: Climate Change, Environmental and Public Health, Natural Resources, and Water

  20. Comparing Web Services with Other Software Components y.yu@open.ac.uk

    E-Print Network [OSTI]

    Lu, Jianguo

    - 1 - Comparing Web Services with Other Software Components Yijun Yu y.yu@open.ac.uk Computing to be developed. As a kind of software components, web service technology has flourished and attracted a flurry of research activities. Despite the vast amount of research on mechanisms of web services, there have been

  1. 2 IAEI NEWS November.December 2009 www.iaei.org making the ac utility connection

    E-Print Network [OSTI]

    Johnson, Eric E.

    operation of the entire system. The ac output circuit requirements and the circuits that carry the inverter source. Such sources would include the output of PV inverter(s) and the utility supply. This Code section the utility-interactive inverter to the utilitygridproperlyiscriticaltothesafe,long-term, and reliable

  2. Optimal Selection of AC Cables for Large Scale Offshore Wind Farms

    E-Print Network [OSTI]

    Hu, Weihao

    Optimal Selection of AC Cables for Large Scale Offshore Wind Farms Peng Hou, Weihao Hu, Zhe Chen@et.aau.dk, whu@iet.aau.dk, zch@iet.aau.dk Abstract--The investment of large scale offshore wind farms is high the operational requirements of the offshore wind farms and the connected power systems. In this paper, a new cost

  3. Mnoa Green Days Checklist for Buildings Being Closed Due to AC Shutdown

    E-Print Network [OSTI]

    Wang, Yuqing

    Mnoa Green Days Checklist for Buildings Being Closed Due to AC Shutdown The following Mnoa Green Days in which air conditioning to participating buildings will be shutdown over the weekends is a checklist for building occupants to use as a reference to successfully conserve energy during the Expanded

  4. AC conductivity of nanoporous metal-oxide photoanodes for solar energy conversion

    E-Print Network [OSTI]

    Konezny, Steven J.

    AC conductivity of nanoporous metal-oxide photoanodes for solar energy conversion Steven J. Konezny% solar-to-electric energy conversion efficiency) exploited the large surface area of nanoporous thin for solar photoconversion is analyzed using a model based on fluctuation-induced tunneling conduction (FITC

  5. AC PV Modules Take a standard DC PV module and connect a microinverter

    E-Print Network [OSTI]

    Johnson, Eric E.

    , and secure a listing to UL1741 for a pre-assembled module/inverter device, and you have an AC PV module No discussion of PV systems would be complete without a look at the newest inverter technologies that installers Most grid-tied inverters are "string inverters"--they operate with a string of series-connected PV

  6. www.arts.canterbury.ac.nz/internships Project Title: Fracking in Canterbury?

    E-Print Network [OSTI]

    Hickman, Mark

    www.arts.canterbury.ac.nz/internships Project Title: Fracking in Canterbury? Bachelor of Arts: Joanna Goven Project Reference Number: S212/Fracking/22/NP Application Deadline: 2 July NOON Project Description: Fracking is the term given to the hydraulic fracturing of rock to extract natural gas

  7. Auxiliary field simulation and Coulomb's Law A.C. Maggs a

    E-Print Network [OSTI]

    Maggs, Anthony

    Auxiliary field simulation and Coulomb's Law A.C. Maggs a , J. Rottler b a Laboratoire de Physico gives good results in molecular dynamics; Coulomb's law is implied by Maxwell's equations in the quasi in the presence of the long ranged Coulomb interaction. We compare the efficiencies of our molecular dynamics

  8. State of the art analysis of online fault location on AC cables in underground transmission systems

    E-Print Network [OSTI]

    Bak, Claus Leth

    on transmission level fault location methods have been focused on overhead lines. Because of the very different- termine the fault location. Because only one end meas- urements are used, the algorithm is derived usingState of the art analysis of online fault location on AC cables in underground transmission systems

  9. http://www.rois.ac.jp Research Organization ofResearch Organization of

    E-Print Network [OSTI]

    Yamamoto, Hirosuke

    http://www.rois.ac.jp Research Organization ofResearch Organization of Information and Systems established as the third scientific methodology, next to theory and experiment, and the need. With the incorporation in 2004 of the Inter-University Research Institutes, the Research Organization of Information

  10. Inhomogeneous soliton ratchets under two ac forces Luis Morales-Molina

    E-Print Network [OSTI]

    Sánchez, Angel "Anxo"

    Inhomogeneous soliton ratchets under two ac forces Luis Morales-Molina Max-Planck Institut für; published 10 April 2006 We extend our previous work on soliton ratchet devices L. Morales-Molina et al., Eur, as proposed for particle ratchets by Savele'v et al. Europhys. Lett. 67, 179 2004 ; Phys. Rev. E 70, 066109

  11. Cell Cycle and Chaperone-Mediated Regulation of H3K56ac Incorporation in Yeast

    E-Print Network [OSTI]

    Friedman, Nir

    Cell Cycle­ and Chaperone-Mediated Regulation of H3K56ac Incorporation in Yeast Tommy Kaplan1 of Massachusetts Medical School, Worcester, Massachusetts, United States of America, 4 Programs in Gene Function and Expression and Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts

  12. AC 2011-1689: THE ROLE OF INTENTIONAL SELF-REGULATION IN ACHIEVEMENT IN ENGINEERING

    E-Print Network [OSTI]

    AC 2011-1689: THE ROLE OF INTENTIONAL SELF-REGULATION IN ACHIEVEMENT IN ENGINEERING Morgan M Hynes College. They live in Wayland, Massachusetts. They have three children, Justin, 30, a director and screen Society for Engineering Education, 2011 #12;The role of intentional self-regulation in achievement

  13. Library Information Literacy Section literacy@lib.kobe-u.ac.jp

    E-Print Network [OSTI]

    Banbara, Mutsunori

    1. Process Library Information Literacy Section literacy@lib.kobe-u.ac.jp 2014 for university staff/students To find books on a particular subject (search by Keyword, Classification, or Subject library (P. 4) Available in Kobe University libraries Search the Kobe University online catalog OPAC Kobe

  14. EL COLEGIO DE MICHOACAN, A.C. Centro de Estudios Rurales

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    : Una experiencia educativa entre indigenismo y desarrollo rural Dr. Philippe Schaffhauser MizziEL COLEGIO DE MICHOACAN, A.C. Centro de Estudios Rurales 1 VI Congreso Internacional del CEISAL (30 de junio - 3 de julio de 2010 ­ Université de Toulouse 2- Le Mirail) Simposio: "Desarrollo

  15. A Comparison of the AC and DC Power Flow Models for LMP Calculations

    E-Print Network [OSTI]

    A Comparison of the AC and DC Power Flow Models for LMP Calculations Thomas J. Overbye, Xu Cheng power flow model for LMP-based market calculations. The paper first provides a general discussion of balanced, three phase, electric power transmission networks is through the solution of the power flow. From

  16. www.stfc.ac.uk/innovations 6 754321Issue 08 June 2010

    E-Print Network [OSTI]

    www.stfc.ac.uk/innovations 6 754321Issue 08 June 2010 This issue: 1 50 Years of the laser 4 Volcanic ash monitoring at Chilbolton 5 Technology Strategy Board - Driving innovation 6 IRUVX-PP Meets for much more, such as personalised medical treatment and helping humankind out of its energy quandary

  17. www.imperial.ac.uk/business-school Imperial MBA final project

    E-Print Network [OSTI]

    www.imperial.ac.uk/business-school Imperial MBA ­ final project #12;Imperial College Business economic development strategy in the mining industry: A Case Study of Lebowa Platinum Mine in South Africa-HOUSE PERSPECTIVES." MARTIN TREWHELLA PRINCIPAL, GLOBAL ENERGY PRACTICE, ARTHUR D. LITTLE #12;Commitment Projects

  18. Chemistry -Bachelor of Science (SCHUG) Total Credits Required: 128 Chemistry -ACS Certified

    E-Print Network [OSTI]

    Chemistry - Bachelor of Science (SCHUG) Total Credits Required: 128 Chemistry - ACS Certified Major of the following courses Course Credits Course Credits CH1150 University Chemistry I AND 3 CH4110 Pharmaceutical Chemistry: Drug Action 3 CH1151 University Chemistry Lab 1 AND 1 CH4120 Pharmaceutical Chemistry: Drug

  19. Chemistry -Bachelor of Science (SCH5UG) Total Credits Required: 128 Chemistry/Environmental -ACS Certified

    E-Print Network [OSTI]

    Chemistry - Bachelor of Science (SCH5UG) Total Credits Required: 128 Chemistry/Environmental - ACS credits Course Credits Course Credits CH1150 University Chemistry I AND 3 BL1040 Principles of Biology 4 CH1151 University Chemistry Lab 1 AND 1 BL3310 Environmental Microbiology 3 CH1153 University

  20. Chemistry -Bachelor of Science (SCH1UG) Total Credits Required: 128 Chemistry/Polymers -ACS Certified

    E-Print Network [OSTI]

    Chemistry - Bachelor of Science (SCH1UG) Total Credits Required: 128 Chemistry/Polymers - ACS credits Course Credits Course Credits CH1150 University Chemistry I AND 3 CH4610 Intro to Polymer Science 3 CH1151 University Chemistry Lab 1 AND 1 CH4620 Polymer Chemistry 3 CH1153 University Chemistry

  1. Function Block Diagrams * {ekjee, jbyoo, suhyun, cha}@dependable.kaist.ac.kr

    E-Print Network [OSTI]

    }@dependable.kaist.ac.kr : FBD(Function Block Diagram) FBD . PLC FBD C . FBD . FBD Center(ITRC). RLL(Relay Ladder Logic) , . PLC(Programmable Logic Controller) [2] , LD(Ladder Diagram) FBD(Function Block Diagram) PLC . PLC . PLC

  2. Finally, the Academy has ac-cepted eleven new members, for a

    E-Print Network [OSTI]

    Finally, the Academy has ac- cepted eleven new members, for a total of 73 members. Please see of educators. If you are not already an Academy member, please consider submitting your application. A review of member- ship categories is on page 2 of this Academy Bulletin. Complete de- tails are on the Academy

  3. LAW enFOrcement AcAdemy College of Rural and Community Development

    E-Print Network [OSTI]

    Hartman, Chris

    LAW enFOrcement AcAdemy College of Rural and Community Development Community and Technical College Requirements for Certification: 16 credits The Law Enforcement Academy prepares students for a career in law en Enforcement Academy is an intense semester of full-time study. Students attend class 40 hours per week for one

  4. PArAmedic AcAdemy College of Rural and Community Development

    E-Print Network [OSTI]

    Hartman, Chris

    PArAmedic AcAdemy College of Rural and Community Development Community and Technical College 907-455-2895 www.ctc.uaf.edu/programs/paramedic/ The paramedic academy prepares students to take the national para Medical Board. The paramedic academy offers the highest level of education avail- able to prepare for work

  5. Investigation of CandidateTechniquesfor High-Frequency AC Distributed Power Systems'

    E-Print Network [OSTI]

    Wu, Shin-Tson

    Investigation of CandidateTechniquesfor High-Frequency AC Distributed Power Systems' Shiguo Luo power systems PPSs) have been used extensively and a considerable amount of information is availableon and outlined in this paper. I. INTRODUCTION Power conversion system design issues are becoming increasingly

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

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    1994-01-01T23:59:59.000Z

    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.

  7. Cyclic strain hardening of nanocrystalline nickel B. Moser a,b,*, T. Hanlon a,c

    E-Print Network [OSTI]

    Suresh, Subra

    Cyclic strain hardening of nanocrystalline nickel B. Moser a,b,*, T. Hanlon a,c , K.S. Kumar d , S strain hardening and frequency-dependent fatigue life in electrodeposited nanocrystalline Ni subjected. All rights reserved. Keywords: Nanocrystalline materials; Nickel; Low cycle fatigue; Fracture; Cyclic

  8. ePOWER Seminar AC solar cells: A new breed of PV power generation

    E-Print Network [OSTI]

    Abolmaesumi, Purang

    -noon Walter Light Hall, Room 302 Abstract: A solar cell inside a photovoltaic (PV) panel inherently produces ePOWER Seminar AC solar cells: A new breed of PV power generation Professor Faisal Khan Assistant will provide a guideline for solar cell designers to fabricate various discrete components in a power converter

  9. Android Diabetes Log Book E-mail: kongkamol@kku.ac.th

    E-Print Network [OSTI]

    Runapongsa, Kanda

    Android Diabetes Log Book 1 2 3 1 . . 40002 2, 3 . . 40002 E-mail: kongkamol@kku.ac.th Abstract Diabetes is a chronic disease, of which the patients have to continually monitor their health conditions. Keywords: android application, diabetes 4.07 5.00 , 1. 285 . . 2573 435 . . 2552 558,156 7,019 [1] 15 7% [2

  10. ac computer-assisted oral: Topics by E-print Network

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

    ac computer-assisted oral First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Computationally-assisted...

  11. A nonlinear robust HVDC control for a parallel AC/DC power system

    E-Print Network [OSTI]

    Qu, Zhihua

    A nonlinear robust HVDC control for a parallel AC/DC power system Hongzhi Cai a , Zhihua Qu b. Keywords: Robust control; HVDC; Power system; Stability; Lyapunov method 1. Introduction It has been recognized that, through an HVDC transmission line, fast electronic control can be applied on the DC power

  12. IDT54/74FCT574/A/C FASTCMOSOCTALDREGISTER(3-STATE) MILITARYANDCOMMERCIALTEMPERATURERANGES

    E-Print Network [OSTI]

    Berns, Hans-Gerd

    register built using an advanced dualmetalCMOStechnology. TheseregistersconsistofeightOoutputsonthelow-to-hightransitionoftheclockinput. The IDT54/74FCT574/A/C has non-inverting outputs with respect to the data at the D inputs LOW 3-state Output Enable Input FUNCTION TABLE (1) Inputs Outputs Internal Function OE CP DN ON QN Hi

  13. www.phy.cam.ac.uk What is the Physics of

    E-Print Network [OSTI]

    Steiner, Ullrich

    `In 2100, the sources of energy on this planet will be either solar or fusion, and the preferred meanswww.phy.cam.ac.uk Inside... What is the Physics of Sustainability? 2 Peter Littlewood's Parting with the University Registrary Jonathan Nicholls at the award ceremony. The urgency of dealing with energy

  14. pubs.acs.org/langmuir Single-Walled Carbon Nanotube Pillars: A Superhydrophobic Surface

    E-Print Network [OSTI]

    Resasco, Daniel

    pubs.acs.org/langmuir Single-Walled Carbon Nanotube Pillars: A Superhydrophobic Surface Liang Zhang angle. The novel SWNT pillars exhibit superhydrophobicity (i.e., contact angle 160°). To quantify surface has been found necessary to achieve stable superhydrophobicity.14-17 A re- cent report18 indicates

  15. A reduction of proof complexity to computational complexity for AC 0 [p] Frege systems

    E-Print Network [OSTI]

    Krajíèek, Jan

    proved, although some related results were obtained. Ajtai [3, 4, 5], Beame 1 #12; et.al.[6] and Buss et simulate polynomial calculus over F p , and recently Buss, Kolodziejczyk and Zdanowski [10] proved] system. Also, Buss et.al.[9] showed that the AC 0 [p] Frege systems are polynomially equivalent

  16. Jon Crowcroft, http://www.cl.cam.ac.uk/~jac22

    E-Print Network [OSTI]

    Spanoudakis, George

    §1 Jon Crowcroft, http://www.cl.cam.ac.uk/~jac22 http://nymote.org Two-Sided Marketing to Incent Internetworking Networks of Things History of Mobile Cloud n Smart Phone disintermediates Cellular n Cloud to democratize n Flatter, P2P, Decentralized n Devices (in pocket&home) powerful enough n Uplinks nearly fast

  17. www.canterbury.ac.nz/platform From the Vice-Chancellor Welcome to Platform

    E-Print Network [OSTI]

    Hickman, Mark

    www.canterbury.ac.nz/platform #12;From the Vice-Chancellor Welcome to Platform As a University-wide festival, Platform 2010 offers a unique and enriched experience of the arts. It is a chance for audiences for the third biennale University of Canterbury Arts Festival, Platform. The festival is 11 days of fine art

  18. A/AC.105/C.1/2014/CRP.15 5 February 2014

    E-Print Network [OSTI]

    Schrijver, Karel

    on the Peaceful Uses of Outer Space Scientific and Technical Subcommittee Fifty-first session Vienna, 10 infrastructure, including high voltage electrical transmission systems and pipelines. #12;2 V.14-00677 A/AC.105/C space situational awareness); and potential loss of space-based services, particularly environmental

  19. www.tyndall.ac.uk Shale gas: an updated assessment of

    E-Print Network [OSTI]

    Matthews, Adrian

    , such as oil derived from tar sands. Nevertheless, there are several routes by which shale gas extraction maywww.tyndall.ac.uk Shale gas: an updated assessment of environmental and climate change impacts Summary This report, commissioned by The Co-operative, is an update on our January report, Shale gas

  20. Europium and samarium doped calcium sulfide thin films grown by PLD S. Christoulakis a,c

    E-Print Network [OSTI]

    Europium and samarium doped calcium sulfide thin films grown by PLD S. Christoulakis a,c , M Suchea Abstract Europium and samarium doped calcium sulfide thin films (CaS:Eu,Sm) with different thickness were and crystallinity. In this work we present preliminary results related to the deposition of europium and samarium

  1. Chromatin signatures at Notch regulated enhancers reveal large-scale changes in H3K56ac upon activation

    E-Print Network [OSTI]

    Skalska, Lenka; Stojnic, Robert; Li, Jinghua; Fischer, Bettina; Cerda-Moya, Gustavo; Sakai, Hiroshi; Tajbakhsh, Shahragim; Russell, Steven; Adryan, Boris; Bray, Sarah

    2015-06-10T23:59:59.000Z

    ). Likewise, in mammalian T-lymphoblastic leukemia cells CSL-bound enhancers frequently overlapped with RUNX1 binding motifs suggesting that similar mechanisms could confer specificity in these cells (Wang et al, 2014). As there is no evidence for direct... K56ac are acute effects, occurring within minutes, and are likely related to NICD recruitment directly. To confirm whether the increases in H3K56ac is also directly dependent on Notch activity, we assayed H3K56ac in the presence of a ?...

  2. 225-Ac and 223-Ra Production via 800 MeV Proton Irradiation of Natural Thorium Target

    E-Print Network [OSTI]

    J. W. Weidner; S. G. Mashnik; K. D. John; B. Ballard; E. R. Birnbaum; L. J. Bitteker; A. Couture; M. E. Fassbender; G. S. Goff; R. Gritzo; F. M. Hemez; W. Runde; J. L. Ullmann; L. E. Wolfsberg; F. M. Nortier

    2012-04-10T23:59:59.000Z

    Cross sections for the formation of 225,227-Ac, 223,225-Ra, and 227-Th via the proton bombardment of natural thorium targets were measured at a nominal proton energy of 800 MeV. No earlier experimental cross section data for the production of 223,225-Ra, 227-Ac and 227-Th by this method were found in the literature. A comparison of theoretical predictions with the experimental data shows agreement within a factor of two. Results indicate that accelerator-based production of 225-Ac and 223-Ra is a viable production method.

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

    SciTech Connect (OSTI)

    Thallam, R.S. (Salt River Project, Phoenix, AZ (United States))

    1992-10-01T23:59:59.000Z

    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.

  4. FUTURE POWER GRID INITIATIVE Future Power Grid

    E-Print Network [OSTI]

    and WECC model » Prototyping proposed control strategy utilizing high performance computing (HPC) APPROACH

  5. 851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161

    E-Print Network [OSTI]

    studied to examine interactions among them for WECC rating purposes · Rating establishes maximum safe

  6. DRAFT Released for Public Comment February 14, 2008 W. Bill Booth

    E-Print Network [OSTI]

    Coordinating Council (WECC) for consideration in its assessment of West-wide resource adequacy. The term

  7. 21 a 25 de maio de 2006 May 21rst

    E-Print Network [OSTI]

    recently, studies of the WECC power systems, which spans the western US, have identified load modelling

  8. DATE Apr 26 2011 RECD. Apr 26 2011

    E-Print Network [OSTI]

    Coordinating Council (WECC). The proposed changes include new Conditions of Certification for the gas turbine

  9. Energy Research and Development Division FINAL PROJECT REPORT

    E-Print Network [OSTI]

    ................................................................. 1 1.0 Western Electricity Coordinating Council (WECC) WAMS (Wide Area Measurement System

  10. Changes in the Economic Value of Variable Generation at High Penetration Levels: A Pilot Case Study of California

    E-Print Network [OSTI]

    Mills, Andrew

    2013-01-01T23:59:59.000Z

    16/j.apenergy.2011.04.011. Western Electricty Coordinatingcommittees/ Western Electricty Coordinating Council (WECC).

  11. Energy Optimization (Electric)- Commercial Efficiency Program

    Broader source: Energy.gov [DOE]

    The Energy Optimization Programs, administered by WECC, provides commercial electric incentives for the following Michigan utilities:

  12. Energy Optimization (Electric)- Residential Efficiency Program

    Broader source: Energy.gov [DOE]

    The Energy Optimization Programs, administered by WECC, provides residential electric incentives for the following Michigan utilities:

  13. Electrical Circuit Flashover Model of Polluted Insulators under AC Voltage Based on the Arc Root Voltage Gradient Criterion

    E-Print Network [OSTI]

    Yang, Qing

    In order to study the flashover mechanism of polluted insulators under AC voltage, a new arc propagation criterion which is based on an arc root voltage gradient is proposed. This criterion can explain the variation of the ...

  14. Hardware model of a shipboard zonal electrical distribution system (ZEDS) : alternating current/direct current (AC/DC)

    E-Print Network [OSTI]

    Tidd, Chad N. (Chad Norman)

    2010-01-01T23:59:59.000Z

    A hardware model of a shipboard electrical distribution system based on aspects of the DDG 51 Flight IIA, Arleigh Burke class, 60Hz Alternating Current (AC) and the future direct current (DC), zonal electrical distribution ...

  15. Compensation of ac Stark shifts in optical magnetometry RID B-9041-2008 RID A-1272-2007

    E-Print Network [OSTI]

    Novikova, I.; Matsko, A. B.; Velichansky, V. L.; Scully, Marlan O.; Welch, George R.

    2001-01-01T23:59:59.000Z

    The ac Stark shift of the resonance frequency of the nonlinear magneto-optic effect (NMOE) results in a fundamental broadening of this resonance which limits the precision of optical magnetometry based on NMOE. We have studied the dependence...

  16. Subscriber access provided by Stanford University Libraries ACS Nano is published by the American Chemical Society. 1155 Sixteenth Street

    E-Print Network [OSTI]

    Zare, Richard N.

    Subscriber access provided by Stanford University Libraries ACS Nano is published by the American Research and Sustainable Technology, University of Bremen, Leobener Straße NW2, 28359 Bremen, Germany c

  17. A High Frequency Isolated Current-fed Bidirectional DC/AC Converter For Grid-Tied Energy Storage System

    E-Print Network [OSTI]

    King Jet, TSENG

    2013-01-01T23:59:59.000Z

    tied energy storage systems (ESS) will be voltage to a high-DC/AC converter to interface ESS based on low voltage cellscharging and discharging of the ESS and the control strategy

  18. Subscriber access provided by BOSTON UNIV ACS Nano is published by the American Chemical Society. 1155 Sixteenth Street

    E-Print Network [OSTI]

    Alivisatos ACS Nano, 2008, 2 (7), 1452-1458· DOI: 10.1021/nn800270m · Publication Date (Web): 22 July 2008, Rachel K. Smith, Yadong Yin, Haimei Zheng, Bjo¨ rn M. Reinhard,§ Haitao Liu, and A. Paul Alivisatos

  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

    1994-08-01T23:59:59.000Z

    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. TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1TJ conference@trinhall.cam.ac.uk 01223 764444

    E-Print Network [OSTI]

    Lasenby, Joan

    TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1TJ conference@trinhall.cam.ac.uk 01223 764444 TRINITY HALL, minerally too with subtle nutty oak on a long finish. 1 #12;TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1TJ

  1. A test platform for measuring the energy efficiency of AC induction motors under various loading conditions and control schemes/

    E-Print Network [OSTI]

    Granata, John A. (John Anthony)

    2012-01-01T23:59:59.000Z

    A test platform was developed to measure and compare the energy efficiency of an AC induction motor under steady-state and cyclical loading conditions while operating in both a constant speed mode and while performing speed ...

  2. 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.

    2009-01-01T23:59:59.000Z

    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).

  3. The chitinase-like protein YKL-40 increases mucin5AC production in human bronchial epithelial cells

    SciTech Connect (OSTI)

    Liu, Chunyi; Li, Qi [Division of Respiratory Medicine, Second Affiliated Hospital, Chongqing Medical University, No. 74, Linjiang Road, Yuzhong District, Chongqing 400010 (China); Zhou, Xiangdong, E-mail: zxd999@263.net [Division of Respiratory Medicine, Second Affiliated Hospital, Chongqing Medical University, No. 74, Linjiang Road, Yuzhong District, Chongqing 400010 (China); Kolosov, Victor P.; Perelman, Juliy M. [Far Eastern Scientific Center of Physiology and Pathology of Respiration, Siberian Branch, Russian Academy of Medical Sciences, Blagoveshchensk (Russian Federation)

    2013-11-01T23:59:59.000Z

    Mucus overproduction is an important feature in patients with chronic inflammatory airway diseases. However, the regulatory mechanisms that mediate excessive mucin production remain elusive. Recently, the level of YKL-40, a chitinase-like protein, has been found to be significantly increased in chronic inflammatory airway diseases and has been shown to be associated with the severity of these diseases. In this study, we sought to explore the effect of YKL-40 on mucin5AC (MUC5AC) production in chronic inflammatory airway diseases and the potential signaling pathways involved in this process. We found that elevated YKL-40 levels increased the mRNA and protein expression of MUC5AC in a dose- and time-dependent manner, in association with the phosphorylation of extracellular signal-regulated kinase (ERK) and nuclear factor ?B (NF-?B), reflecting their activation. These responses were significantly suppressed by the knockdown of protease-activating receptor 2 (PAR2) with specific small interfering RNA or the inhibitors of ERK and NF-?B. YKL-40-induced MUC5AC overproduction was also effectively attenuated by the inhibitor of focal adhesion kinase (FAK). Taken together, these results imply that YKL-40 can stimulate excessive MUC5AC production through PAR2- and FAK-mediated mechanisms. - Highlights: • MUC5AC is the major secreted mucin in chronic inflammatory airway diseases. • YKL-40 is a prototype of the chitinase-like protein in mammals. • YKL-40 is an active player in chronic inflammatory airway diseases. • YKL-40 can increase MUC5AC production via PAR2-mediated pathway. • FAK is another candidate to mediate YKL-40-induced MUC5AC overexpression.

  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.

    2010-06-01T23:59:59.000Z

    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. 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.

    2005-01-04T23:59:59.000Z

    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.

  6. Construction of AC Motor Controllers for NOvA Experiment Upgrades

    SciTech Connect (OSTI)

    Cooley, Patrick; /Fermilab; ,

    2011-08-04T23:59:59.000Z

    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.

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

    DOE Patents [OSTI]

    Lo, Tinchee (Fishkill, NY); Flanagan, John D. (Rhinebeck, NY)

    2004-05-18T23:59:59.000Z

    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.

  8. THE ACS NEARBY GALAXY SURVEY TREASURY. III. CEPHEIDS IN THE OUTER DISK OF M81

    SciTech Connect (OSTI)

    McCommas, Les P.; Williams, Benjamin F.; Dalcanton, Julianne J.; Davis, Matthew R. [Astronomy Department, University of Washington, Box 351580, Seattle, WA 98195 (United States); Yoachim, Peter [Department of Astronomy and McDonald Observatory, University of Texas, Austin, TX 78712 (United States); Dolphin, Andrew E. [Raytheon Corporation, 870 Winter Street Waltham, MA 02451 (United States)], E-mail: lmccomma@astro.washington.edu, E-mail: jd@astro.washington.edu, E-mail: ben@astro.washington.edu, E-mail: mrdavis@astro.washington.edu, E-mail: yoachim@astro.as.utexas.edu, E-mail: adolphin@ratheon.com

    2009-06-15T23:59:59.000Z

    The ACS Nearby Galaxy Survey Treasury (ANGST) has acquired deep ACS imaging of a field in the outer disk of the large spiral galaxy M81. These data were obtained over a total of 20 Hubble Space Telescope orbits, providing a baseline long enough to reliably identify Cepheid variable stars in the field. Fundamental mode and first overtone types have been distinguished through comparative fits with corresponding Cepheid light curve templates derived from principal component analysis of confirmed Cepheids in the Large Magellanic Cloud (LMC), Small Magellanic Cloud, and Milky Way. A distance modulus of 27.78 {+-} 0.05 {sub r} {+-} 0.14 {sub s} with a corresponding distance of 3.60 {+-} 0.23 Mpc has been calculated from a sample of 11 fundamental mode and two first overtone Cepheids (assuming an LMC distance modulus of {mu}{sub LMC} = 18.41 {+-} 0.10 {sub r} {+-} 0.13 {sub s})

  9. Dirty, Skewed, and Backwards: The Smectic $A$-$C$ Phase Transition in Aerogel

    E-Print Network [OSTI]

    Leiming Chen; John Toner

    2004-07-28T23:59:59.000Z

    We study the smectic AC transition in anisotropic and uniaxial disordered environments, e.g., aerogel with an external field. We find very strange behavior of translational correlations: the low-temperature, lower-symmetry Smectic C phase is itless translationally ordered than the it high-temperature, higher-symmetry Smectic A phase, with short-ranged and algebraic translational correlations, respectively. Specifically, the A and C phase belong to the quasi-long-ranged translationally ordered " XY Bragg glass '' and short-ranged translationally ordered " m=1 Bragg glass '' phase, respectively. The AC phase transition itself belongs to a new universality class, whose fixed points and exponents we find in a d=5-epsilon expansion.

  10. Protecting a HVDC link against accidental isolation from its receiving AC system

    SciTech Connect (OSTI)

    Whitehouse, R.S. (GEC Alsthom Transmission and Distribution Projects Ltd., Stafford (United Kingdom))

    1993-07-01T23:59:59.000Z

    When an HVdc scheme is isolated from its receiving ac system, the inverter may continue to operate, generating its own ac bus voltages; this is defined here as islanding. If islanding is allowed to continue unrestricted, then main circuit components may in some conditions be damaged and it is therefore necessary to provide a suitable protection system. This paper outlines the protection scheme developed for the McNeill Back-to-Back HVdc link in Alberta, Canada, to prevent damage due to islanding while still permitting the link to automatically restart on reclosure of the isolating breaker. Oscillograms showing the protection in operation on both the GEC ALSTHOM HVdc simulator and during tests carried out as part of the commissioning of the McNeill HV dc link are included.

  11. Methodology for integration of HVDC links in large ac systems. Phase I. Reference manual. Final report

    SciTech Connect (OSTI)

    Meredith, R.J.

    1983-03-01T23:59:59.000Z

    HVDC transmission has been found to be an attractive alternative to ac transmission in many situations. Evaluations of HVDC alternatives include technical, economic, environmental and sometimes regulatory considerations which are different than those for ac transmission. This research project resulted in the preparation of a HVDC reference manual which describes a comprehensive methodology for evaluating HVDC alternatives in utility transmission planning. It provides basic background information about existing HVDC systems. It describes the types of studies required and potential problems which must be dealt with. It also discusses how the studies are usually run and what system modeling is required. It emphasizes the importance of proper control of the dc system and provides examples of control systems which have been used.

  12. Robust Timing Synchronization for AC-OFDM Based Optical Wireless Communications

    E-Print Network [OSTI]

    Ranjha, Bilal A; Kavehrad, Mohsen; Deng, Peng

    2015-01-01T23:59:59.000Z

    Visible light communications (VLC) have recently attracted a growing interest and can be a potential solution to realize indoor wireless communication with high bandwidth capacity for RF-restricted environments such as airplanes and hospitals. Optical based orthogonal frequency division multiplexing (OFDM) systems have been proposed in the literature to combat multipath distortion and intersymbol interference (ISI) caused by multipath signal propagation. In this paper, we present a robust timing synchronization scheme suitable for asymmetrically clipped (AC) OFDM based optical intensity modulated direct detection (IM/DD) wireless systems. Our proposed method works perfectly for ACO-OFDM, Pulse amplitude modulated discrete multitone (PAM-DMT) and discrete Hartley transform (DHT) based optical OFDM systems. In contrast to existing OFDM timing synchronization methods which are either not suitable for AC OFDM techniques due to unipolar nature of output signal or perform poorly, our proposed method is suitable for...

  13. Bouncing of a droplet on a superhydrophobic surface in AC electrowetting

    E-Print Network [OSTI]

    Lee, Seung Jun; Kang, Kwan Hyoung

    2009-01-01T23:59:59.000Z

    We introduce a droplet-jumping phenomenon on a superhydrophobic surface driven by the resonant AC electrowetting. The resonant electrical actuation enables a droplet to accumulate sufficient surface energy for jumping, and superhydrophobic surface minimizes adhesion and hysteresis effects. They provide the effective energy conversion from the surface energy to the kinetic energy and improve the stability and the reproducibility of the droplet jumping. The controlled droplet jumping made by the resonant AC electrowetting could place another milestone in digital microfluidics by establishing a potential way to realize the three-dimensional droplet manipulation based on the conventional single plate EWOD configurations. This abstract is related to a fluid dynamics video for the gallery of fluid motion 2009.

  14. Soft-Switching High-Frequency AC-Link Universal Power Converters with Galvanic Isolation

    E-Print Network [OSTI]

    Amirabadi, Mahshid

    2013-08-07T23:59:59.000Z

    ) direct drive using wound-field synchronous generator [10]. ...................................................................................................... 6 Figure 6 Dc-dc buck-boost converter: (a) configuration, (b) energizing mode (mode 1), (c...) de-energizing mode (mode 2), (d) voltage and current waveforms ........ 12 Figure 7 An alternative representation of the dc-dc buck-boost converter ...................... 13 Figure 8 Dc-dc ac-link buck-boost converter: configuration, behavior...

  15. Stability and electronic properties of carbon in -Al2O3 Jiajie Zhu a,c

    E-Print Network [OSTI]

    Pandey, Ravi

    Stability and electronic properties of carbon in -Al2O3 Jiajie Zhu a,c , K.P. Muthe b , Ravindra China a r t i c l e i n f o Article history: Received 2 July 2013 Received in revised form 8 November and electronic properties of carbon in -Al2O3 are investigated using density functional theory. In the host

  16. EE5390: Analog Integrated Circuit Design; Assignment 3 Nagendra Krishnapura (nagendra@iitm.ac.in)

    E-Print Network [OSTI]

    Krishnapura, Nagendra

    function. Plot the unit step response and the loop gain magni- tude and phase response. Change each (one at a time) of Cc, Rc, GL = Gf = Gi to 0.5Ã? and 2Ã? their nominal values. Plot the unit step response response to a current step of 1/Rf Amperes with a 100 ps risetime? Increase Rf by 20Ã? and show the ac

  17. Nmero Nome Notas 1 Teste Notas 2 Teste AC Nota final 42200 Armando Dias

    E-Print Network [OSTI]

    Baia, Margarida

    Sheet1 Page 1 Número Nome Notas 1º Teste Notas 2º Teste AC Nota final 42200 Armando Dias 53515.8 2 7 70100 Catarina Ferreira 70146 Mariana Castro 70364 Nuno Gaspar 70524 António Grego 10 2 5 70934 78175 Carlos Martins 14.3 12.6 2 14 78183 Ana Fernandes 14.5 12.8 2 15 78188 Mariana Trezentos 13.3 5

  18. Spectroscopic Observations and Analysis of the Unusual Type Ia SN1999ac

    SciTech Connect (OSTI)

    Garavini, G.; Aldering, G.; Amadon, A.; Amanullah, R.; Astier,P.; Balland, C.; Blanc, G.; Conley, A.; Dahlen, T.; Deustua, S.E.; Ellis,R.; Fabbro, S.; Fadeyev, V.; Fan, X.; Folatelli, G.; Frye, B.; Gates,E.L.; Gibbons, R.; Goldhaber, G.; Goldman, B.; Goobar, A.; Groom, D.E.; Haissinski, J.; Hardin, D.; Hook, I.; Howell, D.A.; Kent, S.; Kim, A.G.; Knop, R.A.; Kowalski, M.; Kuznetsova, N.; Lee, B.C.; Lidman, C.; Mendez,J.; Miller, G.J.; Moniez, M.; Mouchet, M.; Mourao, A.; Newberg, H.; Nobili, S.; Nugent, P.E.; Pain, R.; Perdereau, O.; Perlmutter, S.; Quimby, R.; Regnault, N.; Rich, J.; Richards, G.T.; Ruiz-Lapuente, P.; Schaefer, B.E.; Schahmaneche, K.; Smith, E.; Spadafora, A.L.; Stanishev,V.; Thomas, R.C.; Walton, N.A.; Wang, L.; Wood-Vasey, W.M.

    2005-07-12T23:59:59.000Z

    The authors present optical spectra of the peculiar Type Ia supernova (SN Ia) 1999ac. The data extend from -15 to +42 days with respect to B-band maximum and reveal an event that is unusual in several respects. prior to B-band maximum, the spectra resemble those of SN 1999aa, a slowly declining event, but possess stronger Si II and Ca II signatures (more characteristic of a spectroscopically normal SN). Spectra after B-band maximum appear more normal. The expansion velocities inferred from the Iron lines appear to be lower than average; whereas, the expansion velocity inferred from Calcium H and K are higher than average. The expansion velocities inferred from the Iron lines appear to be lower than average; whereas, the expansion velocity inferred from Calcium H and K are higher than average. The expansion velocities inferred from Si II are among the slowest ever observed, though SN 1999ac is not particularly dim. The analysis of the parameters v{sub 10}(Si II), R(Si II), v, and {Delta}m{sub 15} further underlines the unique characteristics of SN 1999ac. They find convincing evidence of C II {lambda}6580 in the day -15 spectrum with ejection velocity v > 16,000 km s{sup -1}, but this signature disappears by day -9. This rapid evolution at early times highlights the importance of extremely early-time spectroscopy.

  19. Improving the dynamic performance of a complex AC/DC system by HVDC control modifications

    SciTech Connect (OSTI)

    Hammad, A.E. (ABB Power Systems, Baden (CH)); Gagnon, J. (Hydro Quebec, Montreal (CA)); McCallum, D. (IREQ, Montreal (CA))

    1990-10-01T23:59:59.000Z

    The power system of Hydro-Quebec has a peak load of approximately 27 GW. The great distance between the production sites and the load centers introduces stability limitations, which is the reason why the Quebec grid cannot be economically synchronized (through ac transmission with limited capacity) with the U.S. northeastern network. Power exports are therefore dependent on the use of HVDC links of which Hydro-Quebec now possesses five, for a capacity of over 2600 MW. Such a capacity will again soon increase. At the moment, the Chateauguay scheme has the largest HVDC capacity. It transfers 1000 MW by means of two Back-to-Back converter blocks. Various automatic control systems are installed on the Chateauguay scheme owing to the fact that a single circuit of a 765 kV ac line transmits the output of both the HVDC converter stations as well as the output from Beauharnois hydro generating station. Such controls have performed satisfactorily since 1984. However, a remarkable improvement of the overall ac/dc system dynamic performance can be gained by making certain modifications in some of these HVDC system controls. This paper presents the salient features of such control modifications, currently under consideration, using the results of an investigation by digital and analogue simulations that demonstrate the achieved improvements.

  20. Contact Undergraduate Admissions Office | Tel +44 (0)117 928 8154 Email socsci-ug-admissions@bristol.ac.uk 54 ACCOUnTing And FinAnCE

    E-Print Network [OSTI]

    Subramanian, Sriram

    -ug-admissions@bristol.ac.uk 54 ACCOUnTing And FinAnCE FACULTY oF soCiAL sCienCes And LAw bristol.ac.uk Accounting and Finance As one of the UK's leading departments for Accounting and Finance, we offer you the opportunity to study and their application skills. bristol.ac.uk/accounting Why study Accounting and Finance at Bristol? Bristol has

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

    SciTech Connect (OSTI)

    Kiss, T.; Lustbader, J.

    2014-03-01T23:59:59.000Z

    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

  2. The Smectic $A$-$C$ Phase Transition in Biaxial Disordered Environments

    E-Print Network [OSTI]

    Leiming Chen; John Toner

    2011-12-07T23:59:59.000Z

    We study the smectic $A$-$C$ phase transition in biaxial disordered environments, e.g. fully anisotropic aerogel. We find that both the $A$ and $C$ phases belong to the universality class of the "XY Bragg glass", and therefore have quasi-long-ranged translational smectic order. The phase transition itself belongs to a new universality class, which we study using an $\\epsilon=7/2-d$ expansion. We find a stable fixed point, which implies a continuous transition, the critical exponents of which we calculate.

  3. Measurement of the ac Stark shift with a guided matter-wave interferometer

    E-Print Network [OSTI]

    Deissler, B; Burke, J H T; Sackett, C A

    2007-01-01T23:59:59.000Z

    We demonstrate the effectiveness of a guided-wave Bose-Einstein condensate interferometer for practical measurements. Taking advantage of the large arm separations obtainable in our interferometer, the energy levels of the 87Rb atoms in one arm of the interferometer are shifted by a calibrated laser beam. The resulting phase shifts are used to determine the ac polarizability at a range of frequencies near and at the atomic resonance. The measured values are in good agreement with theoretical expectations. However, we observe a broadening of the transition near the resonance, an indication of collective light scattering effects. This nonlinearity may prove useful for the production and control of squeezed quantum states.

  4. Theory of AC Loss in Cables with 2G HTS Wire

    SciTech Connect (OSTI)

    Clem, J.R.; Malozemoff, A.P.

    2009-09-13T23:59:59.000Z

    While considerable work has been done to understand AC losses in power cables made of first generation (1G) high temperature superconductor (HTS) wires, use of second generation (2G) HTS wires brings in some new considerations. The high critical current density of the HTS layer 2G wire reduces the surface superconductor hysteretic losses. Instead, gap and polygonal losses, flux transfer losses in imbalanced two layer cables and ferromagnetic losses for wires with NiW substrates constitute the principal contributions. Current imbalance and losses associated with the magnetic substrate can be minimized by orienting the substrates of the inner winding inward and the outer winding outward.

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

    SciTech Connect (OSTI)

    Barrett, A. J.; Marquino, W. [New Plants Engineering, GE Hitachi Nuclear Energy, M/CA 75, 3901 Castle Hayne Road, Wilmington, NC 28402 (United States)

    2012-07-01T23:59:59.000Z

    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)

  6. AC magnetic measurements of the ALS Booster Dipole Engineering Model Magnet

    SciTech Connect (OSTI)

    Green, M.I.; Keller, R.; Nelson, D.H.; Hoyer, E.

    1989-03-01T23:59:59.000Z

    10 Hz sine wave and 2 Hz sawtooth AC magnetic measurements of he curved ALS Booster Dipole Engineering Model Magnet have been accomplished. Long curved coils were utilized to measure the integral transfer function and uniformity. Point coils and a Hall Probe were used to measure magnetic induction and its uniformity. The data were logged and processed by a Tektronix 11401 digital oscilloscope. The dependence of the effective length on the field was determined from the ratio of the integral coil signals to the point coil signals. Quadrupole and sextupole harmonics were derived from the point and integral uniformity measurements. 5 refs., 4 figs., 2 tabs.

  7. {ochihaya, kshirai}@jaist.ac.jp (Word Sense Disambiguation,WSD)

    E-Print Network [OSTI]

    Shirai, Kiyoaki

    {ochihaya, kshirai}@jaist.ac.jp 1 (Word Sense Disambiguation,WSD) ( ) [2, 3] [1] WSD 2 · EDR EDR EDR EDR · 2 2 2 SVM SVM TinySVM 1 SVM WSD one vs rest (1) Naive Bayes P(s)P(F|c) = P(s) fiF P(fi|c) (1(fi|c) P(fi|c) c fi c s SVM Naive Bayes 2 4 3 3.1 1 116 3.2 EDR 1 1 (1) c 1 2 · : 1 · : 1 · : 1 ( ) 2

  8. {kshirai,t-yagi}@jaist.ac.jp [3, 5, 9, 10

    E-Print Network [OSTI]

    Shirai, Kiyoaki

    {kshirai,t-yagi}@jaist.ac.jp 1 ( ) [1, 2] [8] ( ) [3, 5, 9, 10] EDR [6] 2 SVM Support Vector 3 [8] EDR 6 ID 3c5631 , 1f66e3 3c5631 1f66e3 3c5631 1f66e3 EDR 1 3http://www.csie.ntu.edu.tw/%7 1 SVM (2 ) (3 ) 2 2 4.1 SVM 5 20 4.2 ( ) ( (2)) = (2) Oh 5 Oh=10 ( ) 5 EDR [6] EDR 20 EDR ID EDR 20

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of1 A Strategic Framework for SMRA View from the-1AssessmentAC Transit

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

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of1 A Strategic26-OPAMATTENDEEES:of Energy ChargePoint AC Level 2

  11. Dynamic performance of static and synchronous compensators at an HVDC inverter bus in a very weak AC system

    SciTech Connect (OSTI)

    Nayak, O.B.; Gole, A.M. (Univ. of Manitoba, Winnipeg (Canada)); Chapman, D.G.; Davies, J.B. (Manitoba Hydro, Winnipeg (Canada))

    1994-08-01T23:59:59.000Z

    This paper discusses the performance of dynamic voltage control devices at the inverters of very weak ac systems. The types of compensation considered are: (a) static var compensator (SVC), (b) synchronous compensator (SC), (c) a mix of the two and (d) fixed capacitors. Although the primary purpose of these compensators is to control voltage at the ac bus, their dynamic performance during system disturbances is a very important factor. The investigation includes the behavior of the various voltage control options under ac and dc disturbances. The paper shows that the SVC has the fastest response for load rejection type of overvoltages, but can cause serious problems with recovery during undervoltages caused by single phase faults. The CIGRE benchmark model for HVdc control studies has been modified and used in this study. In particular the effect of local load has been included.

  12. s.haszeldine@ed.ac.uk CCS Scotland, 14 May 2008 Cross Party Group Sci Tech,. Holyrood 1 Carbon Capture and Storage

    E-Print Network [OSTI]

    Haszeldine, Stuart

    ,. Holyrood 7 CCS worldwide potential: very big Deep saline aquifers 400 - 10,000 Gt (16 - 400yr) Oil and gass.haszeldine@ed.ac.uk CCS Scotland, 14 May 2008 Cross Party Group Sci Tech,. Holyrood 1 Carbon projection CO2 rate of emission rising Emissions, CCS, Scotland #12;s.haszeldine@ed.ac.uk CCS Scotland, 14

  13. Author Addresses: J.A. van Biljon, School of Computing, University of South Africa, P O Box 392, UNISA, 0003, South Africa; vbiljja@unisa.ac.za

    E-Print Network [OSTI]

    Williamson, John

    Addresses: J.A. van Biljon, School of Computing, University of South Africa, P O Box 392, UNISA, 0003, South Africa; vbiljja@unisa.ac.za P Kotze, School of Computing, University of South Africa, P O Box 392, UNISA, 0003, South Africa; kotzep@unisa.ac.za K. V. Renaud, Department of Computing Science, The University

  14. Computing AC losses in stacks of high-temperature superconducting tapes This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Prigozhin, Leonid

    generation (2G) high-temperature superconductor tapes. The tapes can be wound into coils with a large number-mail: leonid@math.bgu.ac.il and sokolovv@bgu.ac.il Received 26 January 2011, in final form 2 May 2011 Published 26 May 2011 Online at stacks.iop.org/SUST/24/075012 Abstract Superconducting tape coils and Roebel

  15. New leading/trailing edge modulation strategies for two-stage AC/DC PFC adapters to reduce DC-link capacitor ripple current 

    E-Print Network [OSTI]

    Sun, Jing

    2007-09-17T23:59:59.000Z

    AC/DC adapters mostly employ two-stage topology: Power Factor Correction (PFC) pre-regulation stage followed by an isolated DC/DC converter stage. Low power AC/DC adapters require a small size to be competitive. Among their components, the bulk DC...

  16. s.haszeldine@ed.ac.uk CCS deployment 11 April 2008 Inst Public Policy Research, London 1 CCS : one tool for mitigation

    E-Print Network [OSTI]

    Haszeldine, Stuart

    .haszeldine@ed.ac.uk CCS deployment 11 April 2008 Inst Public Policy Research, London 3 World energy prediction (Business power Hydro power Other renewables Fossil fuel use doubles in next 30yr IEA 2004 World Energy outlook Fossil fuels will still provide most of world energy #12;s.haszeldine@ed.ac.uk CCS deployment 11 April

  17. A new control strategy to improve the performance of PWM ac to dc converter under unbalanced operating condition 

    E-Print Network [OSTI]

    Choudhury, Shamim A.

    1992-01-01T23:59:59.000Z

    A NEW CONTROL STRATEGY TO IMPROVE THE PERFORMANCE OF PWM AC TO DC CONVERTER UNDER UNBALANCED OPERATING CONDITION A Thesis by SHAMIM A. CHOUDHURY Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment... of the requirements for the degree of MASTER 0 F S CIE'VCE t&fay 1992 Major Subject: Electrical Engineering A NEW CONTROL STRATEGY TO IMPROVE THE PERFORMANCE OF PWM AC TO DC CONVERTER UNDER UNBALANCED OPERATING CONDITION A Thesis by SHAMIM A. CHOUDHURY...

  18. 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. [A.F. Ioffe Physical Technical Institute of Russian Academy of Sciences, 194021 St. Petersburg (Russian Federation); Suslov, A. V. [National High Magnetic Field Laboratory, Tallahassee, FL 32310 (United States); Mironov, O. A. [Warwick SEMINANO R and D Center, University of Warwick Science Park, Coventry CV4 7EZ (United Kingdom); Kummer, M.; Känel, H. von [Laboratorium für Festkörperphysik ETH Zürich, CH-8093 Zürich (Switzerland)

    2014-08-20T23:59:59.000Z

    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.

  19. Truthful Complex-valued Knapsack Problem and Discrete Optimization in A/C Electrical Grid

    E-Print Network [OSTI]

    Chau, Chi-Kin

    2012-01-01T23:59:59.000Z

    Since efficient power allocation is a critical requirement for smart grid, we study an important basic setting -- "knapsack problem with selfish users", whereby we design a mechanism to find a utility-maximizing allocation for a group of users with inelastic demands, such that users truthfully reveal their private utility information. As a departure from the traditional setting, complex-valued entities (e.g. power, voltage, and current) are common in A/C electrical grid. There were only few results in the literature concerning complex-valued entities for discrete optimization, because they are substantially more challenging. In this paper, we introduce a non-trivial generalization of knapsack problem with a complex-valued constraint on A/C power, which casts fundamental insight to discrete optimization for smart grid. We provide results of approximability (the existence of a (1/2- e-approximation algorithm) and inapproximability (the absence of FPTAS unless P = NP) for a class of complex-valued knapsack probl...

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

    DOE Patents [OSTI]

    Watson, Harold (Torrance, CA)

    1982-01-01T23:59:59.000Z

    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.

  1. Effect of AC target power on AlN film quality

    SciTech Connect (OSTI)

    Knisely, Katherine, E-mail: kknisely@umich.edu; Grosh, Karl [Department of Mechanical Engineering, University of Michigan, 2026 GG Brown—2350 Hayward St., Ann Arbor, Michigan 48109 (United States)

    2014-09-01T23:59:59.000Z

    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°.

  2. The evolved circumbinary disk of AC Her: a radiative transfer, interferometric and mineralogical study

    E-Print Network [OSTI]

    Hillen, M; Menu, J; Van Winckel, H; Min, M; Mulders, G D

    2015-01-01T23:59:59.000Z

    We aim to constrain the structure of the circumstellar material around the post-AGB binary and RV Tauri pulsator AC Her. We want to constrain the spatial distribution of the amorphous as well as of the crystalline dust. We present very high-quality mid-IR interferometric data that were obtained with MIDI/VLTI. We analyse the MIDI data and the full SED, using the MCMax radiative transfer code, to find a good structure model of AC Her's circumbinary disk. We include a grain size distribution and midplane settling of dust self-consistently. The spatial distribution of crystalline forsterite in the disk is investigated with the mid-IR features, the 69~$\\mu$m band and the 11.3~$\\mu$m signatures in the interferometric data. All the data are well fitted. The inclination and position angle of the disk are well determined at i=50+-8 and PA=305+-10. We firmly establish that the inner disk radius is about an order of magnitude larger than the dust sublimation radius. Significant grain growth has occurred, with mm-sized ...

  3. Data:0ac97b38-3dd4-4ac6-94a0-1b3ab8d36bb0 | Open Energy Information

    Open Energy Info (EERE)

    dd4-4ac6-94a0-1b3ab8d36bb0 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...

  4. e-mail: huscap@lib.hokudai.ac.jp : 4025 1. A Composite Construction Material that Solidifies in

    E-Print Network [OSTI]

    Ishii, Hitoshi

    in asphalt mixtures during the wheel tracking test at high temperatures, Construction and Building Materials pavements due to exposure to organic compounds in a cold region, Construction and Building Materials, vol-mail: huscap@lib.hokudai.ac.jp : 4025 #12;HUSCAP 1. A Composite Construction Material that Solidifies in Water

  5. Mid-Infrared Imaging of the Post-AGB Star AC Herculis with the MMT Adaptive Optics System

    E-Print Network [OSTI]

    Laird M. Close; Beth Biller; William F. Hoffmann; Phil M. Hinz; John H. Bieging; Francois Wildi; Michael Lloyd-Hart; Guido Brusa; Don Fisher; Doug Miller; Roger Angel

    2003-10-20T23:59:59.000Z

    We utilized the MMT's unique deformable secondary adaptive optics system to produce high-resolution (FWHM=0.3"), very high Strehl mid-infrared (9.8, 11.7 & 18 micron) images of the post-AGB star AC Her. The very high (98+/-2%) Strehls achieved with Mid-IR AO led naturally to an ultra-stable PSF independent of airmass, seeing, or location on the sky. We find no significant difference between AC Her's morphology and our unresolved PSF calibration stars (mu UMa & alpha Her) at 9.8, 11.7, & 18 microns. Our current observations do not confirm any extended Mid-IR structure around AC Her. These observations are in conflict with previously reported Keck (seeing-limited) 11.7 and 18 micron images which suggested the presence of a resolved ~0.6" edge-on circumbinary disk. We conclude that AC Her has no extended Mid-IR structure on scales greater than 0.2" (R<75 AU). These first results of Mid-IR AO science are very encouraging for future high accuracy Mid-IR imaging with this technique.

  6. New Power Electronics Converter Interfacing a Hybrid Dc/Ac Microgrid M. Alibeik, E. C. dos Santos Jr.

    E-Print Network [OSTI]

    Zhou, Yaoqi

    New Power Electronics Converter Interfacing a Hybrid Dc/Ac Microgrid M. Alibeik, E. C. dos Santos microgrid is that it has higher efficiency and lesser power conversion. In this work is proposed a new integrated power electronics converter able to connect a Distributed Generation (DG) unit with a hybrid dc

  7. Self-consistent magnetic properties of magnetite tracers optimized for magnetic particle imaging measured by ac susceptometry,

    E-Print Network [OSTI]

    Krishnan, Kannan M.

    Self-consistent magnetic properties of magnetite tracers optimized for magnetic particle imaging measured by ac susceptometry, magnetorelaxometry and magnetic particle spectroscopy Frank Ludwig a , Hilke. Krishnan b,n a Institute of Electrical Measurement and Fundamental Electrical Engineering, TU Braunschweig

  8. AC 2010-2361: REU PROGRAM IN TELEMATICS AND CYBER PHYSICAL SYSTEMS: SHARING STRATEGIES, EXPERIENCE AND LESSONS LEARNED

    E-Print Network [OSTI]

    Mahmud, Syed Masud

    AC 2010-2361: REU PROGRAM IN TELEMATICS AND CYBER PHYSICAL SYSTEMS: SHARING STRATEGIES, EXPERIENCE processing, embedded systems, in-vehicle networking, performance analysis of networking protocols, secure of Electrical and Computer Engineer of Wayne State University. His research interests lie in distributed

  9. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073

    E-Print Network [OSTI]

    with a project management system that closely linked the field crews to the engineering staff which developedPREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073 PRINCETON PLASMA. Availability This report is posted on the U.S. Department of Energy's Princeton Plasma Physics Laboratory

  10. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073

    E-Print Network [OSTI]

    to the general public from: National Technical Information Service U.S. Department of Commerce 5285 Port Royal of the computer control system for the LPI. I. INTRODUCTION The National Spherical Torus Experiment (NSTXPREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073 PRINCETON PLASMA

  11. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073

    E-Print Network [OSTI]

    copies of this report from: U.S. Department of Energy Office of Scientific and Technical Information DOE how these are provided by the candidate PBX-M NBI system. I. INTRODUCTION The National CompactPREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073 PRINCETON PLASMA

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

    DOE Patents [OSTI]

    Cantin, Luc (Baie Comeau, CA); Deschenes, Mario (Baie Comeau, CA); D'Amours, Mario (Sept Iles, CA)

    1995-08-15T23:59:59.000Z

    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.

  13. AC 2010-415: IMPROVED STUDENT LEARNING OF MICROPROCESSOR SYSTEMS THROUGH HANDS-ON AND ONLINE EXPERIENCE

    E-Print Network [OSTI]

    LaMeres, Brock J.

    AC 2010-415: IMPROVED STUDENT LEARNING OF MICROPROCESSOR SYSTEMS THROUGH HANDS-ON AND ONLINE of Microprocessor Systems Through Hands-On and Online Experience Abstract This paper describes an approach to assess and improve the understanding of microprocessor systems for electrical and computer engineering students

  14. Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830

    E-Print Network [OSTI]

    PNNL-23025 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Final Report Veres WC Kuster J de Gouw December 2013 #12;#12;PNNL-23025 Final Report for SERDP Project RC-1649

  15. Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830

    E-Print Network [OSTI]

    PNNL-22691 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Pacific-Coker September 2013 #12;#12;#12;PNNL-22691 Pacific Northwest National Laboratory Annual Site Environmental Report, please take a few minutes to let us know if the PNNL Annual Site Environmental Report meets your needs

  16. Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830

    E-Print Network [OSTI]

    PNNL-21787 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Pacific (PNNL-21787), RICHLAND, WASHINGTON, SEPTEMBER 2012 The Pacific Northwest National Laboratory (PNNL) Site to local, state, and Federal government agencies, Congress, the public, news media, PNNL Site, and Hanford

  17. Tidal effects on net ecosystem exchange of carbon in an estuarine wetland Haiqiang Guo a,c

    E-Print Network [OSTI]

    Noormets, Asko

    Tidal effects on net ecosystem exchange of carbon in an estuarine wetland Haiqiang Guo a,c , Asko, Shanghai, China b Southern Global Change Program, USDA Forest Service, Raleigh, NC, USA c Department concentrations of carbon dioxide (CO2) and methane (CH4) have stimulated great interest in studying the carbon

  18. Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830

    E-Print Network [OSTI]

    costs will make highly insulating windows much more viable as a cost-effective energy efficiency measure overall annual home energy use. In addition to improvements in energy efficiency, highly insulatingPNNL-21678 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Side

  19. PS1061: Sensation and Perception http://www.pc.rhul.ac.uk/staff/J.Zanker/PS1061/PS1061.htm

    E-Print Network [OSTI]

    Zanker, Johannes M.

    5 in V.Bruce, P.R.Green & M.Georgeson 1996 Visual Perception: Physiology, Psychology and Ecology (3PS1061: Sensation and Perception http://www.pc.rhul.ac.uk/staff/J.Zanker/PS1061/PS1061.htm Course as basis of perception · contrast enhancement and redundancy reduction · filters for spatial detail

  20. All-optical generation and detection of subpicosecond ac spin-current pulses in GaAs

    E-Print Network [OSTI]

    Ruzicka, Brian Andrew; Higley, Karl; Werake, Lalani Kumari; Zhao, Hui

    2008-07-01T23:59:59.000Z

    Subpicosecond ac spin-current pulses are generated optically in GaAs bulk and quantum wells at room temperature and at 90 K through quantum interference between one-photon and two-photon absorptions driven by two phase-locked ultrafast laser pulses...

  1. s.haszeldine@ed.ac.uk Radioactive waste Cumbria: Maryport, Silloth 21, 22 Nov 2012 1 Geological disposal of radioactive

    E-Print Network [OSTI]

    -Gas and Coal-Bed-Methane exploration. That excludes the rest of the coastal zone for a 5x5km Repository 2010 ore. Groundwater is opposite to needs #12;Oxidising: uranium can dissolve s.haszeldine@ed.ac.uk Radioactive waste Cumbria: Maryport, Silloth 21, 22 Nov 2012 12 Uranium (spent fuel) can dissolve in oxidising

  2. s.haszeldine@ed.ac.uk Radioactive waste Cumbria 6, 7 Sept 2012 1 Geological disposal of radioactive

    E-Print Network [OSTI]

    have offered Shale-Gas and Coal-Bed-Methane exploration. That excludes the rest of the coastal zone to needs #12;Oxidising: uranium can dissolve s.haszeldine@ed.ac.uk Radioactive waste Cumbria 6, 7 Sept 2012 13 Uranium (spent fuel) can dissolve in oxidising groundwater OxidisingReducing West Cumbria water

  3. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073

    E-Print Network [OSTI]

    electric fields generated by rf-induced fast ion loss will be utilized to drive poloidal rotationPREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073 PRINCETON PLASMA Electric Fields on ICRF Waves C.K. Phillips, J.C. Hosea, M. Ono, and J.R. Wilson June 2001 #12;PPPL Reports

  4. For more travel information, please visit-www.ox.ac.uk/visitors_friends/maps_and_directions/directions.html

    E-Print Network [OSTI]

    Henderson, Gideon

    will be Friday 18 January 2013. The Department offers a wide range of Graduate Studies Projects. A list of projects can be found on the Department web page: www.earth.ox.ac.uk/graduate_admissions/graduate_projects_2013-14. You may apply for an existing project, or propose your own. Applications are invited from

  5. WORLDVIEW THEORY AND THE CONCEPTUALISATION OF SPACE Marc Schfer, Rhodes University, Grahamstown, South Africa, M.Schafer@ru.ac.za

    E-Print Network [OSTI]

    Spagnolo, Filippo

    , Grahamstown, South Africa, M.Schafer@ru.ac.za Introduction The aim of this paper and presentation is to shareMathematicsin South Africa for example, sees space and shape within a context of social experiences. One and representexperienceswithshape,space,timeand motion, using all available senses" (Republic of South Africa, 1997). This apparent

  6. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073

    E-Print Network [OSTI]

    PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073 PRINCETON PLASMAAccess: Interactive Statistics and Graphics for Plasma Physics Databases by W. Davis and D. Mastrovito October 2003 on the U.S. Department of Energy's Princeton Plasma Physics Laboratory Publications and Reports web site

  7. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 17, NO. 2, JUNE 2007 3179 Variable Temperature Total AC Loss and Stability

    E-Print Network [OSTI]

    -temperature superconductors, sta- bility, superconducting filaments and wires. I. INTRODUCTION LARGE-SCALE power applications of high temperature superconductors (HTS) are looking more promising with the advances in commercial and increased stability. Both ac losses and stability of HTS materials are functions of temperature, transport

  8. AC 2011-983: USE OF BUZZWORDS IN INDUSTRIAL ENGINEERING Abhijit Gosavi, Missouri University of Science & Technology

    E-Print Network [OSTI]

    Gosavi, Abhijit

    AC 2011-983: USE OF BUZZWORDS IN INDUSTRIAL ENGINEERING EDUCATION Abhijit Gosavi, Missouri University of Science & Technology Abhijit Gosavi obtained a Ph.D. in industrial engineering from research interests are in simulation-based optimization, production management, and industrial engineering

  9. Quantifying air pollution removal by green roofs in Chicago Jun Yang a,c,*, Qian Yu b

    E-Print Network [OSTI]

    Yu, Qian

    Quantifying air pollution removal by green roofs in Chicago Jun Yang a,c,*, Qian Yu b , Peng Gong c t The level of air pollution removal by green roofs in Chicago was quantified using a dry deposition model. The result showed that a total of 1675 kg of air pollutants was removed by 19.8 ha of green roofs in one year

  10. This is archived information. Please visit http://maths.manchester.ac.uk for current course unit information. General Information

    E-Print Network [OSTI]

    Sidorov, Nikita

    information. General Information Title: Contingencies 2 Unit code: MATH39522 Credit rating: 10 Level: 3This is archived information. Please visit http://maths.manchester.ac.uk for current course unit Pre-requisite units: Co-requisite units: None This course unit may only be taken by students

  11. Empirical Validation of Energy-Neutral Operation on Wearable Devices by MISO Beamforming of IEEE 802.11ac

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    Empirical Validation of Energy-Neutral Operation on Wearable Devices by MISO Beamforming of IEEE.11ac's multiple input, single output (MISO) structure to focus the transmit power to im- prove environments, and they can act as a reliable source by emit- ting RF power in a controlled manner. Although RF

  12. PDF versions of previous colloquia and more information can be found in "events" at http://gcosmo.bao.ac.cn/

    E-Print Network [OSTI]

    Tian, Weidong

    -materials and devices, and less well known microwave related research efforts for energy related applications. All://gcosmo.bao.ac.cn/ 2012 37 / Number 37,2012 TIME: Wednesday, 3:00 PM, June 27, 2012 LOCATION: A601 NAOC Microwave are in the area of microwave / millimeter wave / THz devices, circuits, antennas and their applications

  13. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073

    E-Print Network [OSTI]

    energy sources. As fossil fuels become less and less available as an energy option, the transmission o fPREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073 PRINCETON PLASMA. Availability This report is posted on the U.S. Department of Energy's Princeton Plasma Physics Laboratory

  14. STYRIAN AcADEmY FoR SUSTAINABlE ENERGIES INTERNATIoNAl WINTER School 2011

    E-Print Network [OSTI]

    STYRIAN AcADEmY FoR SUSTAINABlE ENERGIES INTERNATIoNAl WINTER School 2011 "SUSTAINABlE SmART c climate, hazardous nuclear technologies, high investment costs for modernizing the energy system sustainable development of society with innovative energy solutions. The STYRIAN ACADEMY Winter School 2011

  15. bristol.ac.uk/cabot Implications for the UK nuclear industry of the events at the Fukushima

    E-Print Network [OSTI]

    Bristol, University of

    bristol.ac.uk/cabot Implications for the UK nuclear industry of the events at the Fukushima Dai of the events at the Fukushima Dai- ichi nuclear power station, Japan. The report draws on expertise at the Fukushima Daiichi Nuclear Power Plant (NPP), which has recently been declared a level 7 accident within

  16. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073

    E-Print Network [OSTI]

    /FW for on-axis current drive and a Lower Hybrid system for off-axis. Transport projections are presentedPREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073 PRINCETON PLASMA agency thereof. Availability This report is posted on the U.S. Department of Energy's Princeton Plasma

  17. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073

    E-Print Network [OSTI]

    ://www.ntis.gov/ordering.htm #12;A Lower Hybrid Current Drive System for Alcator C-Mod. S. Bernabei, J.C. Hosea, D. Loesser, J, P. Woskov, PSFC, MIT. Abstract. A Lower Hybrid Current Drive system is being constructed jointlyPREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073 PRINCETON PLASMA

  18. TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1TJ conference@trinhall.cam.ac.uk 01223 764444

    E-Print Network [OSTI]

    Lasenby, Joan

    TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1TJ conference@trinhall.cam.ac.uk 01223 764444 DINING MENUS with Coriander Cream Smoked Haddock Chowder with Poached Quail Egg #12;TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1 & Caramelized Shallot Wellington, Basil Dressing #12;TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1TJ conference

  19. On the origin of impact glass in the Apollo 16 regolith Randy L. Korotev a,c,

    E-Print Network [OSTI]

    On the origin of impact glass in the Apollo 16 regolith Randy L. Korotev a,c, , Ryan A. Zeigler a from the 64­210-lm grain-size fraction of three Apollo 16 regolith samples, 14% are impact glasses. Of the impact glasses, 75% are substantially different in composition from either the Apollo 16 regolith or any

  20. A three-level buck converter to regulate a high-voltage DC-to-AC inverter

    E-Print Network [OSTI]

    Schrock, Kenneth C

    2008-01-01T23:59:59.000Z

    A three-level buck converter is designed and analyzed, and shown to be suitable as a high-voltage down converter as a pre-regulation stage for a 600 watt DC-to-AC power inverter. Topology selection for the inverter is ...

  1. PREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073

    E-Print Network [OSTI]

    and granite mining operations in South Africa and Europe, has existed for more than 25 years. When miningPREPARED FOR THE U.S. DEPARTMENT OF ENERGY, UNDER CONTRACT DE-AC02-76CH03073 PRINCETON PLASMA on the U.S. Department of Energy's Princeton Plasma Physics Laboratory Publications and Reports web site

  2. risk_policies_accident_std_vist.doc/ac 1 Revised 07.26.13 STUDENT AND VISITOR ACCIDENT

    E-Print Network [OSTI]

    Su, Xiao

    risk_policies_accident_std_vist.doc/ac 1 Revised 07.26.13 STUDENT AND VISITOR ACCIDENT REPORTING: 408-924-1892 Student and Visitor Accident Reporting Guidelines These guidelines provide instructions for reporting and handling accidents or incidents that happen to students and visitors while on the San José

  3. The galactic first-look survey with the Spitzer space telescope Martin J. Burgdorf a,c,*,1

    E-Print Network [OSTI]

    science tasks during nominal operations, which started on day 98 of the mission. The survey consistedThe galactic first-look survey with the Spitzer space telescope Martin J. Burgdorf a,c,*,1 , Martin in revised form 11 May 2005; accepted 18 May 2005 Abstract The galactic first look survey (GFLS

  4. 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. [University of California Observatories, Santa Cruz, CA 95064 (United States); Strader, Jay [Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan, MI 48824 (United States); Lin, Dacheng; Irwin, Jimmy A.; Wong, Ka-Wah [Department of Physics and Astronomy, University of Alabama, Box 870324, Tuscaloosa, AL 35487 (United States); Sivakoff, Gregory R., E-mail: zgjennin@ucsc.edu [Department of Physics, University of Alberta, Edmonton, Alberta T6G 2E1 (Canada)

    2014-08-01T23:59:59.000Z

    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.

  5. Point of collapse and continuation methods for large ac/dc systems

    SciTech Connect (OSTI)

    Canizares, C.A. (Escuela Politecnica Nacional, Quito (Ecuador)); Alvarado, F.L. (Univ. of Wisconsin, Madison, WI (United States))

    1993-02-01T23:59:59.000Z

    This paper describes the implementation of both Point of Collapse (PoC) methods and continuation methods for the computation of voltage collapse points (saddle-node bifurcations) in large ac/dc systems. A comparison of the performance of these methods is presented for real systems of up to 2,158 buses. The paper discusses computational details of the implementation of the PoC and continuation methods, and the unique challenges encountered due to the presence of high voltage direct current (HVDC) transmission, area interchange power control regulating transformers, and voltage and reactive power limits. The characteristics of a robust PoC power flow program are presented, and its application to detection and solution of voltage stability problems is demonstrated.

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

    DOE Patents [OSTI]

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

    2006-06-06T23:59:59.000Z

    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.

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

    DOE Patents [OSTI]

    Flanagan, John D. (Rhinebeck, NY); Herring, Jay R. (Poughkeepsie, NY); Lo, Tin-Chee (Fishkill, NY)

    2008-09-30T23:59:59.000Z

    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.

  8. Harmonic mixing in two coupled qubits: quantum synchronization via ac drives

    E-Print Network [OSTI]

    S. E. Savel'ev; Z. Washington; A. M. Zagoskin; M. J. Everitt

    2012-10-12T23:59:59.000Z

    Simulating a system of two driven coupled qubits, we show that the time-averaged probability to find one driven qubit in its ground or excited state can be controlled by an ac drive in the second qubit. Moreover, off-diagonal elements of the density matrix responsible for quantum coherence can also be controlled via driving the second qubit, i.e., quantum coherence can be enhanced by appropriate choice of the bi-harmonic signal. Such a dynamic synchronization of two differently driven qubits has an analogy with harmonic mixing of Brownian particles forced by two signals through a substrate. Nevertheless, the quantum synchronization in two qubits occurs due to multiplicative coupling of signals in the qubits rather than via a nonlinear harmonic mixing for a classical nano-particle.

  9. Detection of Keplerian dynamics in a disk around the post-AGB star AC Her

    E-Print Network [OSTI]

    Bujarrabal, V; Alcolea, J; Van Winckel, H

    2015-01-01T23:59:59.000Z

    So far, only one rotating disk has been clearly identified and studied in AGB or post-AGB objects (in the Red Rectangle), by means of observations with high spectral and spatial resolution. However, disks are thought to play a key role in the late stellar evolution and are suspected to surround many evolved stars. We aim to extend our knowledge on these structures. We present interferometric observations of CO J=2-1 emission from the nebula surrounding the post-AGB star AC Her, a source belonging to a class of objects that share properties with the Red Rectangle and show hints of Keplerian disks. We clearly detect the Keplerian dynamics of a second disk orbiting an evolved star. Its main properties (size, temperature, central mass) are derived from direct interpretation of the data and model fitting. With this we confirm that there are disks orbiting the stars of this relatively wide class of post-AGB objects

  10. Evaluation of FOXFET biased ac-coupled silicon strip detector prototypes for CDF SVX upgrade

    SciTech Connect (OSTI)

    Laakso, M. [Fermi National Accelerator Lab., Batavia, IL (United States)]|[Research Inst. for High Energy Physics (SEFT), Helsinki (Finland)

    1992-03-01T23:59:59.000Z

    Silicon microstrip detectors for high-precision charged particle position measurements have been used in nuclear and particle physics for years. The detectors have evolved from simple surface barrier strip detectors with metal strips to highly complicated double-sided AC-coupled junction detectors. The feature of AC-coupling the readout electrodes from the diode strips necessitates the manufacture of a separate biasing structure for the strips, which comprises a common bias line together with a means for preventing the signal from one strip from spreading to its neighbors through the bias line. The obvious solution to this is to bias the strips through individual high value resistors. These resistors can be integrated on the detector wafer by depositing a layer of resistive polycrystalline silicon and patterning it to form the individual resistors. To circumvent the extra processing step required for polysilicon resistor processing and the rather difficult tuning of the process to obtain uniform and high enough resistance values throughout the large detector area, alternative methods for strip biasing have been devised. These include the usage of electron accumulation layer resistance for N{sup +}{minus} strips or the usage of the phenomenon known as the punch-through effect for P{sup +}{minus} strips. In this paper we present measurement results about the operation and radiation resistance of detectors with a punch-through effect based biasing structure known as a Field OXide Field-Effect Transistor (FOXFET), and present a model describing the FOXFET behavior. The studied detectors were prototypes for detectors to be used in the CDF silicon vertex detector upgrade.

  11. Performance and economic comparison between point-to-point HVDC transmission and hybrid back-to-back HVDC/AC transmissions

    SciTech Connect (OSTI)

    Hammad, A.E. (ABB, Asea Brown Boveri Ltd., Baden (CH)); Long, W.F. (Wisconsin Univ., Madison, WI (USA))

    1990-04-01T23:59:59.000Z

    Two alternative schemes to interconnect asynchronous or independent ac systems by a limited capacity link are presented. The first alternative is a conventional point-to-point HVDC transmission system; the second alternative comprises an ac line terminated by an HVDC back- to-back link. Technical and operational properties of both schemes are illustrated with emphasis on var regulation capability and control flexibility to improve the overall performance of the interconnected ac systems. Cost comparisons for the principal components of the two alternatives are made. A brief description of two existing HVDC installations is given to demonstrate the practical implementation of the considered schemes.

  12. Data:604ed2b9-ae45-4e64-b028-62ac646b3aad | Open Energy Information

    Open Energy Info (EERE)

    ac646b3aad 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 Information 2....

  13. AC breakdown strength of N2, SF6 and a mixture of N2+SF6 containing a small amount of SF6

    SciTech Connect (OSTI)

    Mardikyan, K.; Kalenderli, O. [Istanbul Technical Univ. (Turkey). Electric-Electronics Faculty; Ersen, O.; Canarslan, E. [Schneider Electric Co., Istanbul (Turkey)

    1996-12-31T23:59:59.000Z

    AC breakdown strengths of N{sub 2}, SF{sub 6} and a mixture of N{sub 2}+SF{sub 6} containing 1% of SF{sub 6} were experimentally studied. For this purpose, 50 Hz AC breakdown voltages in both uniform and non-uniform fields up to a pressure of 400 kPa from 50 kPa were measured. Test results show that the addition of 1% of SF{sub 6} to nitrogen increases the breakdown voltage up to 250 kPa in a non-uniform field. The relative breakdown strength of the mixture with respect to components was also calculated in 50 Hz AC voltage. The analysis of Paschen curves reveals an improvement of 40% in the breakdown strength of mixture in uniform field but in non-uniform fields, the maximum AC breakdown voltage of the mixture is 24% lower than that of pure SF{sub 6}.

  14. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 14, NO. 1, MARCH 2004 69 AC Losses in Type-II Superconductors Induced by

    E-Print Network [OSTI]

    Prigozhin, Leonid

    -II superconductors in power transmission lines, current leads, fault current limiters, magnetic shields, bearings losses in flywheels, electric motors, magnetic shields, etc. Index Terms--AC losses, asymptotic solution

  15. www.pubs.acs.org/accounts Vol. XXX, No. XX ' XXXX ' 000000 ' ACCOUNTS OF CHEMICAL RESEARCH ' A 10.1021/ar200076s & XXXX American Chemical Society

    E-Print Network [OSTI]

    Agmon, Noam

    www.pubs.acs.org/accounts Vol. XXX, No. XX ' XXXX ' 000­000 ' ACCOUNTS OF CHEMICAL RESEARCH ' A 10 RESEARCH ' 000­000 ' XXXX ' Vol. XXX, No. XX Liquid Water Agmon 1. Introduction Ice exhibits a nearly

  16. 1994-2010 China Academic Journal Electronic Publishing House. All rights reserved. http://www.cnki.net 38 (2009~OE) 6 http: www. wuli. ac. cn

    E-Print Network [OSTI]

    Gao, Hongjun

    § --° · ¢ /»,,> ·¤ ¨ ,¢¶ , ··¤ ~ ª ,--¿ · ... ^ l----`¸ ° . ,, ...·° ¡¡ ¡¡ Graphene,~ ¶ ¿ , ­, ··¤ ,Æ,,,, -- Preparation been exploited to prepare high quality Graphene. Three main methods are reviewed, including the thermal://www.cnki.net ¡¡Îï Àí ¡¤38 (2009~OE) 6 ¡¡ ¡¡ ¡¡ ¡¡ ¡¡ ¡¡ ¡¡ ¡¡ ¡¡ ¡¡ ¡¡ ¡¡ ¡¡ http: www. wuli. ac. cn Graphene¿ § º

  17. pubs.acs.org/Macromolecules Published on Web 04/07/2010 r 2010 American Chemical Society 4394 Macromolecules 2010, 43, 43944400

    E-Print Network [OSTI]

    Thirumalai, Devarajan

    pubs.acs.org/Macromolecules Published on Web 04/07/2010 r 2010 American Chemical Society 4394 Macromolecules 2010, 43, 4394­4400 DOI: 10.1021/ma902008y Theory of Biopolymer Stretching at High Forces Ngo Minh

  18. ac2lus: Bringing SMT-solving and Abstract Interpretation Techniques to Real-Time Calculus through the Synchronous Language Lustre

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ac2lus: Bringing SMT-solving and Abstract Interpretation Techniques to Real-Time Calculus through of techniques like SMT-solving and abstract interpretation which were not previously available for use with RTC

  19. Design, Implementation and Evaluation of a Configurable NoC for AcENoCs FPGA Accelerated Emulation Platform

    E-Print Network [OSTI]

    Lotlikar, Swapnil Subhash

    2011-10-21T23:59:59.000Z

    queues, thus enabling them to e ciently handle non-uniform tra c conditions. Tra c Receptor (TR) is associated with every routing node in the network. The TRs decode the information present in the packets received at the destination routing node... of Department, Costas N. Georghiades August 2010 Major Subject: Computer Engineering iii ABSTRACT Design, Implementation and Evaluation of a Con gurable NoC for AcENoCs FPGA Accelerated Emulation Platform. (August 2010) Swapnil Subhash Lotlikar, B.E...

  20. Wall-plug (AC) power consumption of a very high energy e+/e- storage ring collider

    E-Print Network [OSTI]

    Ross, Marc C

    2013-01-01T23:59:59.000Z

    Estimated AC power consumption ranges from ~280 MW (1) to 416 MW (2) for a 350 GeV E_cm 80 km circumference colliding beam storage ring complex with parameters given in (1). The difference between the two estimates is from differing assumptions concerning heat removal, cryo-plant efficiency, klystron operation etc. The purpose of this note is to list and explain these. (1) Mike Koratzinos, et al, IPAC13 (2) Marc Ross, Higgs Quo Vadis Workshop, March 2013.

  1. {ldalove,jbyoo}@konkuk.ac.kr pSET2TC6: A Translation Tool to Standardize the Output Format

    E-Print Network [OSTI]

    pSET : pSET2TC6 O , {ldalove,jbyoo}@konkuk.ac.kr pSET2TC6: A Translation Tool' . PLCVerifier pSET PLCopen XML pSET2TC6 . . 1. pSET (POSAFE-Q Software Engineering Tool] . ASCII `*.ld' PLCopen TC6 (PLCopen Technical Commit 6) [8] XML . 2011 Vol.38, No.2(B) #12

  2. Nmero Nome 1T 2T R1T R2T E AC NF 42200 Armando Dias

    E-Print Network [OSTI]

    Baia, Margarida

    Sheet1 Page 1 Número Nome 1T 2T R1T R2T E AC NF 42200 Armando Dias 53515 Jorge Branco 55774 João 70100 Catarina Ferreira 70146 Mariana Castro 70364 Nuno Gaspar 70524 António Grego 10 2 5 70934 João.2 2 15 78167 Afonso Sarmento 13.8 8.3 7.6 2 12 78175 Carlos Martins 14.3 12.6 11 2 14 78183 Ana

  3. An ultra low-noise AC beam transformer and digital signal processing system for CERN's ELENA ring

    E-Print Network [OSTI]

    Angoletta, M E; Caspers, F; Federmann, S; Molendijk, J; Pedersen, F; Sanchez-Quesada, J

    2013-01-01T23:59:59.000Z

    CERN’s Extra Low ENergy Antiproton (ELENA) ring is a new synchrotron that will be commissioned in 2016 to further decelerate the antiprotons coming from CERN’s Antiproton Decelerator (AD). Essential longitudinal diagnostics required for commissioning and operation include the intensity measurement for bunched and debunched beams and the measurement of p/p for debunched beams to assess the electron cooling performance. The beam phase information is also needed by the Low-Level RF (LLRF) system. The baseline system for providing the required beam parameters and signals is based upon two ultra-low-noise AC beam transformers and associated digital signal processing. The AC beam transformers cover different frequency regions and are an adaptation to the ELENA layout of those used in the AD. Two AC beam transformers will also be installed in the extraction lines to provide beam intensity measurements. The digital signal processing will be carried out with the leadingedge hardware family used for ELENA’s L...

  4. 851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161

    E-Print Network [OSTI]

    to refine and revise standards to reflect improved methods and changing conditions · Work with WECC adequacy;Northwest Power and Conservation Council Transmission · Participate in WECC activities and assessment ­ Wind

  5. 851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161

    E-Print Network [OSTI]

    of the nation's power supplies. The Western Electricity Coordinating Council (WECC) is in the process for the Northwest and the corresponding adequacy assessments will aid in WECC's efforts. The Bonneville Power

  6. Customer Forum 34 Agenda

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

    - 1:00 Lunch 1:00 - 1:30 Mid-C Topics Update on regional Mid-C discussions 1:30 - 2:00 WECC Operating Reserve Requirement Describe ongoing efforts to implement WECC BAL-002- 02...

  7. W. Bill Booth Bruce A. Measure

    E-Print Network [OSTI]

    of the nation's power supplies. We expect that the Western Electricity Coordinating Council (WECC adequacy assessment for the Pacific Northwest power supply will aid WECC's efforts. · The Bonneville Power

  8. A Smart Grid Vulnerability Analysis Framework for Coordinated Variable Structure Switching Attacks

    E-Print Network [OSTI]

    Kundur, Deepa

    the approach. Moreover the insights gained from the vulnerability analysis of the WECC system are consistent approach is detailed in Section III along with an illustration of the procedure on the WECC 3-machine, 9

  9. 851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161

    E-Print Network [OSTI]

    with the WECC is a CA balancing authority; or where the renewable energy is dynamically transferred to a CA and RPS-eligible energy are procured from a generator whose first point of interconnection with the WECC

  10. Abstract--The California Independent System Operator Corporation (CAISO) is in charge of managing the electricity

    E-Print Network [OSTI]

    McCalley, James D.

    the entire WECC network and consists of the detailed representation of the CAISO control grid and a simplified representation of the WECC (Western Electricity Coordinating Council) bulk power system. Creating

  11. 851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161

    E-Print Network [OSTI]

    . The Western Electricity Coordinating Council (WECC) has done a study, which is now being reviewed by BPA studied by WECC. The committee also had a report on the Regional Technical Forum's Policy Advisory

  12. Arnold Schwarzenegger REAL-TIME GRID RELIABILITY

    E-Print Network [OSTI]

    .........................................................................................................3 1.2. Overview of WECC-CA ISO Phasor Network ................................................................................................................21 LIST OF FIGURES Figure 1: Current and Future WECC-California ISO Phasor Data Communication Network

  13. Modeling Interregional Transmission Congestion in the National Energy Modeling System

    E-Print Network [OSTI]

    Gumerman, Etan; Chan, Peter; Lesieutre, Bernard; Marnay, Chris; Wang, Juan

    2006-01-01T23:59:59.000Z

    5 Figure 1-4 Four-Node Example Based on the WECC6 Figure 1-5 Four-Node Example Based on the WECCPAE PBA RA RON SERC TWh WECC Annual Energy Outlook U.S.

  14. 851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161

    E-Print Network [OSTI]

    that this interim regional standard be submitted to the Western Electricity Coordinating Council (WECC) in order to inform WECC's ongoing process to develop West- wide adequacy standards. The term "standard

  15. Solar Variability and Forecasting Jan Kleissl, Chi Chow, Matt Lave, Patrick Mathiesen,

    E-Print Network [OSTI]

    Homes, Christopher C.

    Forecasting Benefits Use of state-of-art wind and solar forecasts reduces WECC operating costs by up to 14/MWh of wind and solar generation). WECC operating costs could be reduced by an additional $500 million

  16. 851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161

    E-Print Network [OSTI]

    , coal, nuclear) · individual resources The process also checks to see if the order of dispatch Nameplate White Book Winter WECC Winter WECC Summer EIA Winter EIA Summer Beaver 1-7 521 586.2 521 497 470

  17. Delocalization of Phase Fluctuations and the Stability of AC Electricity Grids

    E-Print Network [OSTI]

    S. Kettemann

    2015-04-21T23:59:59.000Z

    The energy transition towards an increased supply of renewable energy raises concerns that existing electricity grids, built to connect few centralized large power plants with consumers, may become more difficult to control and stabilized with a rising number of decentralized small scale generators. Here, we aim to study therefore, how local phase fluctuations affect the AC grid stability. To this end, we start from a model of nonlinear dynamic power balance equations. We map them to complex linear wave equations and find stationary solutions for the distribution of phases $\\varphi_i$ at the generator and consumer sites $i$. Next, we derive differential equations for deviations from these stationary solutions. Next, we derive differential equations for deviations from these stationary solutions. Starting with an initially localized phase perturbation, it is found to spread in a periodic grid diffusively throughout the grid. We derive the parametric dependence of diffusion constant $D$. We apply the same solution strategy to general grid topologies and analyse their stability against local fluctuations. The fluctuation remains either localized or becomes delocalized, depending on grid topology and distribution of consumers and generators $P_i$. Delocalization is found to increase the lifetime of phase fluctuations and thereby their influence on grid stability, while localization results in an exponentially fast decay of phase fluctuations at all grid sites.

  18. Hubble Space Telescope ACS mosaic of the prototypical starburst galaxy M82

    E-Print Network [OSTI]

    M. Mutchler; H. E. Bond; C. A. Christian; L. M. Frattare; F. Hamilton; W. Januszewski; Z. G. Levay; M. Mountain; K. S. Noll; P. Royle; J. S. Gallagher; P. Puxley

    2006-12-19T23:59:59.000Z

    In March 2006, the Hubble Heritage Team obtained a large four-filter (B, V, I, and H-alpha) six-point mosaic dataset of the prototypical starburst galaxy NGC 3034 (M82), with the Advanced Camera for Surveys (ACS) onboard the Hubble Space Telescope (HST). The resulting color composite Heritage image was released in April 2006, to celebrate Hubble's 16th anniversary. Cycle 15 HST proposers were encouraged to submit General Observer and Archival Research proposals to complement or analyze this unique dataset. Since our M82 mosaics represent a significant investment of expert processing beyond the standard archival products, we will also release our drizzle combined FITS data as a High Level Science Product via the Multimission Archive at STScI (MAST) on December 31, 2006. This paper documents the key aspects of the observing program and image processing: calibration, image registration and combination (drizzling), and the rejection of cosmic rays and detector artifacts. Our processed FITS mosaics and related information can be downloaded from http://archive.stsci.edu/prepds/m82/

  19. An ultra low noise AC beam transformer for deceleration and diagnostics of low intensity beams

    E-Print Network [OSTI]

    González, C

    1999-01-01T23:59:59.000Z

    The design of a broad band ultra-low noise ferrite loaded AC beam transformer is presented. It is designed for use in the CERN Antiproton Decelerator (AD), where beams of a few 107 charges must be decelerated from 3.5 GeV/c to 100 MeV/c. It is used in the RF beam-phase loop, and for intensity and bunch shape measurements during deceleration. When the beam is debunched for cooling on magnetic flat tops, the pick-up is used for measurements of intensity and momentum distribution by means of longitudinal Schottky scans. When used as Schottky pick-up, the signal to noise ratio should be better by about 40 dB than the existing stripline based longitudinal Schottky pick-up. The integrated design of pick-up and associated low-noise amplifier is presented. The achieved noise performance of a few from 1 to 3 MHz is obtained by attaching a low-noise, high-impedance silicon JFET (junction field effect transistor) amplifier to a high-Q resonant ferrite loaded cavity, and then eliminating the resonant response by low-nois...

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

    DOE Patents [OSTI]

    Geppert, Steven (Bloomfield Hills, MI); Slicker, James M. (Union Lake, MI)

    1984-01-01T23:59:59.000Z

    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.