National Library of Energy BETA

Sample records for unity power factor

  1. Optimizing Power Factor Correction 

    E-Print Network [OSTI]

    Phillips, R. K.; Burmeister, L. C.

    1986-01-01

    FACTOR CORRECTION Robert K. Phillips and Louis C. Burmeister, Mechanical Engineering, University of Kansas, Lawrence, KS The optimal investment for power factor correcting capacitors for Kansas Power and Light Company large power contract customers... consumer of electricity were made for demands of 200, 400, 800, 1,600, 3,200, and 6,400 k\\~ and monthly energy consumption periods of 100, 150, 200, 300, 400, and 500 hours for several capacitor purchase and installation costs. The results...

  2. Power Factor Improvement 

    E-Print Network [OSTI]

    Viljoen, T. A.

    1979-01-01

    and disadvantages of various locations in the electrical network are described including the cost of installation and network capacity improvement. Sizing of capacitors is also covered. Finally, some case studies involving power factor improvement are presented...

  3. Reducing Power Factor Cost

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

    Before PF 100142 0.70 or 70% After PF 100105 0.95 or 95% PB References: B.C. Hydro. Power Factor. The GEM Series. October 1989. Commonwealth Sprague Capacitor, Inc....

  4. Non-Unity Active PFC Methods for Filter Size Optimization Y. Chen J. W. Kimball P. T. Krein

    E-Print Network [OSTI]

    Kimball, Jonathan W.

    factor solutions and have been verified experimentally. Such solutions meet power quality standards power factor approach goes well beyond requirements of power quality standards. Worst-case waveforms case power system engineers do not design for unity power factor. Therefore, a designer would naturally

  5. Power-Factor Compensation

    E-Print Network [OSTI]

    Stankoviæ, Aleksandar

    and inductors as well as power elec- tronic converters, such as active filters and flexible ac transmission- tures the energy-transmission efficiency for a given load. The standard approach to improving the power of nonsinusoidal signals in energy networks at all power levels. An unfortunate consequence of the inclu- sion

  6. Industrial Power Factor Analysis Guidebook. Electrotek Concepts...

    Office of Scientific and Technical Information (OSTI)

    low power factors, increased conductor and transformer losses, and lower voltages. Utilities must supply both active and reactive power and compensate for these losses. Power...

  7. Unity in Religion 

    E-Print Network [OSTI]

    Wester, Jeremy

    2007-07-14

    within. Thomas Merton, with his doctrine of Contemplation, represents the Christian tradition, Islam is represented by Ibn ‘Arabi’s doctrine of the unity of being (wahdat al-wujud), and Lao Tzu and Chuang Tzu represent the Taoist tradition with the Tao te...

  8. Guidelines for Power Factor Improvement Projects 

    E-Print Network [OSTI]

    Massey, G. W.

    1999-01-01

    Power factor is an indication of electrical system efficiency. Low power factor, or low system efficiency, may be due to one or more causes, including lightly loaded transformers, oversized electric motors, and harmonic-generating non-linear loads...

  9. Factors driving wind power development in the United States

    E-Print Network [OSTI]

    Bird, Lori A.; Parsons, Brian; Gagliano, Troy; Brown, Matthew H.; Wiser, Ryan H.; Bolinger, Mark

    2003-01-01

    s Largest Purchase of Wind Power,” September 17, 2001.FACTORS DRIVING WIND POWER DEVELOPMENT IN THE UNITED STATESthe United States third in wind power capacity globally,

  10. Human Factors Aspects of Power System Flow Animation

    E-Print Network [OSTI]

    Human Factors Aspects of Power System Flow Animation Douglas A. Wiegmann, Gavin R. Essenberg experimental results associated with human factors aspects of using animation to display electric power system. Index Terms--Power System Operations and Planning, Power System Visualization, Animation, Human Factors

  11. Industrial Power Factor Analysis Guidebook. (Technical Report...

    Office of Scientific and Technical Information (OSTI)

    of reactive power in an electrical system. Reactive power represents wasted energy--electricity that does no useful work because the electrical current is out of phase with...

  12. SUBMITTED TO IEEE TRANSACTIONS ON POWER SYSTEMS, FEBRUARY 2002 1 Human Factors Aspects of Power System

    E-Print Network [OSTI]

    SUBMITTED TO IEEE TRANSACTIONS ON POWER SYSTEMS, FEBRUARY 2002 1 Human Factors Aspects of Power with human factors aspects of utilizing color contours to visualize electric power system bus voltage in the quickest solution times. Testing was done using a modified version of the IEEE 118 bus system. Index Terms--Power

  13. Capacity Factor Risk At Nuclear Power Plants

    E-Print Network [OSTI]

    Du, Yangbo

    We develop a model of the dynamic structure of capacity factor risk. It incorporates the risk that the capacity factor may vary widely from year-to-year, and also the risk that the reactor may be permanently shutdown prior ...

  14. Optimizing Thermoelectric Power Factor by Means of a Potential Barrier

    E-Print Network [OSTI]

    1 Optimizing Thermoelectric Power Factor by Means of a Potential Barrier Neophytos Neophytou}@iue.tuwien.ac.at Abstract Large efforts in improving thermoelectric energy conversion are devoted to energy filtering design, ~40% improvement in the thermoelectric power factor can be achieved if the following conditions

  15. Simulation of a Wireless Power Transfer System for Electric Vehicles with Power Factor Correction

    SciTech Connect (OSTI)

    Pickelsimer, Michael C [ORNL; Tolbert, Leon M [ORNL; Ozpineci, Burak [ORNL; Miller, John M [ORNL

    2012-01-01

    Wireless power transfer has been a popular topic of recent research. Most research has been done to address the limitations of coil-to-coil efficiency. However, little has been done to address the problem associated with the low input power factor with which the systems operate. This paper details the steps taken to analyze a wireless power transfer system from the view of the power grid under a variety of loading conditions with and without power factor correction.

  16. Utility & Regulatory Factors Affecting Cogeneration & Independent Power Plant Design & Operation 

    E-Print Network [OSTI]

    Felak, R. P.

    1986-01-01

    , TX, June 17-19, 1986 Table 1 (Cont'd) Situation Utility has a temp orary oversupply of its own baseload power sources and thus at certain times prefers dis patching the inde pendent power source Requirement If the producer does not comply... factor range, as as intended output range as a functi time, and rate of change) Delivery (and purchase) voltage leve preferred Auxiliary power requirements Start-up/Standby/Emergency power requirements Sendout characteristics (e.g., net v surplus...

  17. A Dual Method for Computing Power Transfer Distribution Factors

    E-Print Network [OSTI]

    Ronellenfitsch, Henrik; Witthaut, Dirk

    2015-01-01

    Power Transfer Distribution Factors (PTDFs) play a crucial role in power grid security analysis, planning, and redispatch. Fast calculation of the PTDFs is therefore of great importance. In this letter, we present a dual method of computing PTDFs. It uses power flows along topological cycles of the network but still relies on simple matrix algebra. For power grids containing a relatively small number of cycles, the method offers a significant speedup of numerical calculations.

  18. Variable Frequency Motor Drives: Harmonics, Power Factor, and Energy Efficiency 

    E-Print Network [OSTI]

    Massey, G. W.

    1997-01-01

    harmonics and power factor. NOTE: The views expressed in this paper do not necessarily represent the views of the United States of America, the U.S. Department of Justice, or the Federal Bureau of Prisons....

  19. Nuclear Power - Control, Reliability and Human Factors 

    E-Print Network [OSTI]

    2011-01-01

    Reliability K s e n i i a Sapoz h n i k o v a and Roald Tayma n o v D.I.Mendeleyev Institute for Metrology, Russia 1. Introduction At present, a great number of embedded sens o r devi c es provi d e monito r i n g of operat i n g condi t io n... s and state of equi p me n t , includ i n g nucle a r react o r s of power plant s . The metrol o gi c a l reliab i li t y of meas uri n g instrum e n t s built in equi p me n t deter mi n e s the valid i t y of measure me nt infor ma t i o n . The qualit y...

  20. Tailoring UNITY to Distributed Program Design ?

    E-Print Network [OSTI]

    Charpentier, Michel

    is reduced to a mere fair selection mechanism over a set of assignments. Thus still, proof rules are designed and a receiver. This notion is an elementary mechanism to describe communicating processes. It proviTailoring UNITY to Distributed Program Design ? Michel Charpentier, Mamoun Filali, Philippe Mauran

  1. Power law and composite power law friction factor correlations for laminar and turbulent gasliquid

    E-Print Network [OSTI]

    Joseph, Daniel D.

    new unpublished, and data for gas and heavy oil from PDVSA-Intevep. Dimensionless pressure gradients oil are compiled and processed for power law and composite power law friction factor correlations reduce to the power laws for laminar flow when the Reynolds number is low and to turbulent flow when

  2. The Artistic Unity of Corona de sombra

    E-Print Network [OSTI]

    Perri, Dennis

    1981-10-01

    FALL 1981 13 The Artistic Unity of Corona de sombra Dennis Perri Corona de sombra has been the object of diverse critical interest since its controversial premiere in 1947. Attention has often centered on Usigli's adap tation and interpretation... of Mexican history or the psychological characteri zation of the insane Carlota.1 For other critics, Corona de sombra has served to illustrate the application of Usigli's theories of dramatic art.2 Still others have elected to examine the play in relation...

  3. Optimization of wind turbine energy and power factor with an evolutionary computation algorithm

    E-Print Network [OSTI]

    Kusiak, Andrew

    Optimization of wind turbine energy and power factor with an evolutionary computation algorithm 2009 Keywords: Wind turbine Power factor Power output Power quality Data mining Neural network Dynamic computation approach for optimization of power factor and power output of wind turbines is discussed. Data

  4. Gated Si nanowires for large thermoelectric power factors

    SciTech Connect (OSTI)

    Neophytou, Neophytos, E-mail: N.Neophytou@warwick.ac.uk [School of Engineering, University of Warwick, Coventry CV4 7AL (United Kingdom); Kosina, Hans [Institute for Microelectronics, Vienna University of Technology, Gusshausstrasse 27-29/E360, Vienna A-1040 (Austria)

    2014-08-18

    We investigate the effect of electrostatic gating on the thermoelectric power factor of p-type Si nanowires (NWs) of up to 20?nm in diameter in the [100], [110], and [111] crystallographic transport orientations. We use atomistic tight-binding simulations for the calculation of the NW electronic structure, coupled to linearized Boltzmann transport equation for the calculation of the thermoelectric coefficients. We show that gated NW structures can provide ?5× larger thermoelectric power factor compared to doped channels, attributed to their high hole phonon-limited mobility, as well as gating induced bandstructure modifications which further improve mobility. Despite the fact that gating shifts the charge carriers near the NW surface, surface roughness scattering is not strong enough to degrade the transport properties of the accumulated hole layer. The highest power factor is achieved for the [111] NW, followed by the [110], and finally by the [100] NW. As the NW diameter increases, the advantage of the gated channel is reduced. We show, however, that even at 20?nm diameters (the largest ones that we were able to simulate), a ?3× higher power factor for gated channels is observed. Our simulations suggest that the advantage of gating could still be present in NWs with diameters of up to ?40?nm.

  5. Fast-Scale Instability of Single-Stage Power-Factor-Correction Power Supplies

    E-Print Network [OSTI]

    Tse, Chi K. "Michael"

    power applications. The circuit employs a cascade configuration of a boost converter and a forward of a boost PFC converter and a forward converter for output regulation [1]. Being a single- stage converter regulation since the DCM boost converter can automatically achieve a good power factor without additional

  6. Single-Phase Active Boost Rectifier with Power Factor Correction for Wireless Power Transfer Applications

    SciTech Connect (OSTI)

    Chinthavali, Madhu Sudhan [ORNL] [ORNL; Onar, Omer C [ORNL] [ORNL; Miller, John M [ORNL] [ORNL; Tang, Lixin [ORNL] [ORNL

    2013-01-01

    Wireless Power Transfer (WPT) technology is a novel research area in the charging technology that bridges utility and the automotive industries. There are various solutions that are currently being evaluated by several research teams to find the most efficient way to manage the power flow from the grid to the vehicle energy storage system. There are different control parameters that can be utilized to compensate for the change in the impedance. To understand the power flow through the system this paper presents a novel approach to the system model and the impact of different control parameters on the load power. The implementation of an active front-end rectifier on the grid side for power factor control and voltage boost capability for load power regulation is also discussed.

  7. IEEE Power Electronics Specialists Conference (pESC 93), pp. 995-1001, 1993 A Resonant Power Factor Conditioner

    E-Print Network [OSTI]

    kHz. The basic features of soft switching, Inherent high Power Factor and simple control make the proposed approach a viable design alternative for power Input stages. network (Co, RL) throughIEEE Power Electronics Specialists Conference (pESC 93), pp. 995-1001, 1993 A Resonant Power Factor

  8. Economic Conditions and Factors Affecting New Nuclear Power Deployment

    SciTech Connect (OSTI)

    Harrison, Thomas J.

    2014-10-01

    This report documents work performed in support of the US Department of Energy Office of Nuclear Energy’s Advanced Small Modular Reactor (AdvSMR) program. The report presents information and results from economic analyses to describe current electricity market conditions and those key factors that may impact the deployment of AdvSMRs or any other new nuclear power plants. Thus, this report serves as a reference document for DOE as it moves forward with its plans to develop advanced reactors, including AdvSMRs. For the purpose of this analysis, information on electricity markets and nuclear power plant operating costs will be combined to examine the current state of the nuclear industry and the process required to successfully move forward with new nuclear power in general and AdvSMRs in particular. The current electricity market is generally unfavorable to new nuclear construction, especially in deregulated markets with heavy competition from natural gas and subsidized renewables. The successful and profitable operation of a nuclear power plant (or any power plant) requires the rate at which the electricity is sold to be sufficiently greater than the cost to operate. The wholesale rates in most US markets have settled into values that provide profits for most operating nuclear power plants but are too low to support the added cost of capital recovery for new nuclear construction. There is a strong geographic dependence on the wholesale rate, with some markets currently able to support new nuclear construction. However, there is also a strong geographic dependence on pronuclear public opinion; the areas where power prices are high tend to have unfavorable views on the construction of new nuclear power plants. The use of government-backed incentives, such as subsidies, can help provide a margin to help justify construction projects that otherwise may not seem viable. Similarly, low interest rates for the project will also add a positive margin to the economic analysis. In both cases, the profitable price point is decreased, making more markets open to profitable entry. Overall, the economic attractiveness of a nuclear power construction project is not only a function of its own costs, but a function of the market into which it is deployed. Many of the market characteristics are out of the control of the potential nuclear power plant operators. The decision-making process for the power industry in general is complicated by the short-term market volatility in both the wholesale electricity market and the commodity (natural gas) market. Decisions based on market conditions today may be rendered null and void in six months. With a multiple-year lead time, nuclear power plants are acutely vulnerable to market corrections.

  9. Analysis and Design of Isolated High Power Boost Topologies and Simulationswith Quasi-Staticand Quasi-StationaryTransformer

    E-Print Network [OSTI]

    Noé, Reinhold

    on the boost converter for single-phase applications, if near unity power factors are anticipated. Reasons for the popularity of the boost converter as compared to other PFC topologies are: It is well examined as a base- stage power factor correction schemes although the isolated boost fullbridge converter (IBF) depicted

  10. Isolated Boost FullbridgeTopology Suitablefor High Power and Power Factor Correction

    E-Print Network [OSTI]

    Noé, Reinhold

    -2921-69399 Abstrmt - Isolated variants of the boost converter topology for single phase powerfactorcorrectionare are anticipated.Reasonsfor the popularity of the boost converter as com- pared to other PFC topologies are-converterdominate the one-stage power factor correction schemes although the isolated boost full- bridge converter (IBF

  11. Factors driving wind power development in the United States

    SciTech Connect (OSTI)

    Bird, Lori A.; Parsons, Brian; Gagliano, Troy; Brown, Matthew H.; Wiser, Ryan H.; Bolinger, Mark

    2003-05-15

    In the United States, there has been substantial recent growth in wind energy generating capacity, with growth averaging 24 percent annually during the past five years. About 1,700 MW of wind energy capacity was installed in 2001, while another 410 MW became operational in 2002. This year (2003) shows promise of significant growth with more than 1,500 MW planned. With this growth, an increasing number of states are experiencing investment in wind energy projects. Wind installations currently exist in about half of all U.S. states. This paper explores the key factors at play in the states that have achieved a substantial amount of wind energy investment. Some of the factors that are examined include policy drivers, such as renewable portfolio standards (RPS), federal and state financial incentives, and integrated resource planning; as well as market drivers, such as consumer demand for green power, natural gas price volatility, and wholesale market rules.

  12. Design of a Boost Power Factor Correction Converter Using Optimization Techniques Sergio Busquets-Monge1

    E-Print Network [OSTI]

    Lindner, Douglas K.

    Design of a Boost Power Factor Correction Converter Using Optimization Techniques Sergio Busquets Foundation under Award Number EEC-9731677. #12;Design of a Boost Power Factor Correction Converter Using of a boost power factor correction front-end converter with an input electromagnetic interference filter

  13. New AC-DC Power Factor Correction Architecture Suitable for High Frequency Operation

    E-Print Network [OSTI]

    Lim, Seungbum

    This paper presents a novel ac-dc power factor correction (PFC) power conversion architecture for single-phase grid interface. The proposed architecture has significant advantages for achieving high efficiency, good power ...

  14. Human Factors Considerations in New Nuclear Power Plants: Detailed Analysis.

    SciTech Connect (OSTI)

    OHara,J.; Higgins, J.; Brown, W.; Fink, R.

    2008-02-14

    This Nuclear Regulatory Commission (NRC) sponsored study has identified human-performance issues in new and advanced nuclear power plants. To identify the issues, current industry developments and trends were evaluated in the areas of reactor technology, instrumentation and control technology, human-system integration technology, and human factors engineering (HFE) methods and tools. The issues were organized into seven high-level HFE topic areas: Role of Personnel and Automation, Staffing and Training, Normal Operations Management, Disturbance and Emergency Management, Maintenance and Change Management, Plant Design and Construction, and HFE Methods and Tools. The issues where then prioritized into four categories using a 'Phenomena Identification and Ranking Table' methodology based on evaluations provided by 14 independent subject matter experts. The subject matter experts were knowledgeable in a variety of disciplines. Vendors, utilities, research organizations and regulators all participated. Twenty issues were categorized into the top priority category. This Brookhaven National Laboratory (BNL) technical report provides the detailed methodology, issue analysis, and results. A summary of the results of this study can be found in NUREG/CR-6947. The research performed for this project has identified a large number of human-performance issues for new control stations and new nuclear power plant designs. The information gathered in this project can serve as input to the development of a long-term strategy and plan for addressing human performance in these areas through regulatory research. Addressing human-performance issues will provide the technical basis from which regulatory review guidance can be developed to meet these challenges. The availability of this review guidance will help set clear expectations for how the NRC staff will evaluate new designs, reduce regulatory uncertainty, and provide a well-defined path to new nuclear power plant licensing.

  15. Electro-luminescent cooling: light emitting diodes above unity efficiency

    E-Print Network [OSTI]

    Santhanam, Parthiban

    Experimental demonstration of net electro-luminescent cooling in a diode, or equivalently electroluminescence with wall-plug efficiency greater than unity, had eluded direct observation for more than five decades. We review ...

  16. Partition of unity systems and B-splines

    E-Print Network [OSTI]

    Daniel J. Greenhoe

    2014-10-20

    This paper presents the basic principles of partition of unity systems and B-splines. Analysis of these systems is performed using Fourier analysis, multi-resolution analysis, and wavelet analysis.

  17. Comparative Study of Power Factor Correction Converters For Single Phase Half-Bridge Inverters

    E-Print Network [OSTI]

    Tolbert, Leon M.

    of input current harmonic distortion and en- ergy efficiency. I. INTRODUCTION Uninterruptible power supplyComparative Study of Power Factor Correction Converters For Single Phase Half-Bridge Inverters Gui an isolation transformer, and sinu- soidal input currents if a power factor correction (PFC) con- verter

  18. Unity, Oregon: Energy Resources | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin, New York:Power Company Jump to:AssociationOregon: Energy

  19. Unity, Wisconsin: Energy Resources | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin, New York:Power Company Jump to:AssociationOregon:

  20. Regulation and Compensation of Source Harmonics for the Boost ConverterBased Power Factor

    E-Print Network [OSTI]

    Perreault, Dave

    Regulation and Compensation of Source Harmonics for the Boost Converter­Based Power Factor of a diode bridge and associated boost converter. This circuit is the most widely employed of the fam- ily for the boost­ based power factor precompensator which guarantees fast regulation of the output voltage towards

  1. BIFURCATION ANALYSIS OF A POWER-FACTOR-CORRECTION BOOST CONVERTER: UNCOVERING FAST-SCALE INSTABILITY

    E-Print Network [OSTI]

    Tse, Chi K. "Michael"

    BIFURCATION ANALYSIS OF A POWER-FACTOR-CORRECTION BOOST CONVERTER: UNCOVERING FAST to a power-factor-correc- tion (PFC) boost converter to examine the fast-scale insta- bility problem to a current-programmed boost converter. In this paper, we study the onset of period-doubling (fast-scale) in

  2. Advance Three Phase Power Factor Correction Schemes for Utility Interface of Power Electronic Systems 

    E-Print Network [OSTI]

    Albader, Mesaad

    2014-07-30

    Modern power electronic systems operate with different voltage and/or frequency rating such as Adjustable speed drive, Micro Grid, Uninterruptable Power Supplies (UPS) and High Voltage DC Transmission Systems. To match power electronic systems...

  3. Power-Efficient Directional Wireless Communication on Small Form-Factor Mobile Devices

    E-Print Network [OSTI]

    Zhong, Lin

    -antenna system designed to realize directional communication efficiently. Unlike power- hungry and expensive the power con- sumption of a commercial 802.11 adapter by up to 20% and pro- vide better quality underPower-Efficient Directional Wireless Communication on Small Form-Factor Mobile Devices Ardalan

  4. A Mixed-SignalASIC Power-Factor-Correction(PFC) Controller for High Frequency Switching Rectifiers

    E-Print Network [OSTI]

    A Mixed-SignalASIC Power-Factor-Correction(PFC) Controller for High Frequency Switching Rectifiers power-stage interfacing should be simple with few components needed. To reduce design costs, very little design should be necessary to implement the con- troller using the most common power stages

  5. Human Factors Evaluation of Advanced Electric Power Grid Visualization Tools

    SciTech Connect (OSTI)

    Greitzer, Frank L.; Dauenhauer, Peter M.; Wierks, Tamara G.; Podmore, Robin

    2009-04-01

    This report describes initial human factors evaluation of four visualization tools (Graphical Contingency Analysis, Force Directed Graphs, Phasor State Estimator and Mode Meter/ Mode Shapes) developed by PNNL, and proposed test plans that may be implemented to evaluate their utility in scenario-based experiments.

  6. Analysis of silicon carbide based semiconductor power devices and their application in power factor correction 

    E-Print Network [OSTI]

    Durrani, Yamin Qaisar

    2005-11-01

    Recent technological advances have allowed silicon (Si) semiconductor technology to approach the theoretical limits of the Si material; however, power device requirements for many applications are at a stage that the present Si-based power devices...

  7. Incidents at nuclear power plants caused by the human factor

    SciTech Connect (OSTI)

    Mashin, V. A.

    2012-09-15

    Psychological analysis of the causes of incorrect actions by personnel is discussed as presented in the report 'Methodological guidelines for analyzing the causes of incidents in the operation of nuclear power plants.' The types of incorrect actions and classification of the root causes of errors by personnel are analyzed. Recommendations are made for improvements in the psychological analysis of causes of incorrect actions by personnel.

  8. SiC MOSFET Based Single Phase Active Boost Rectifier with Power Factor Correction for Wireless Power Transfer Applications

    SciTech Connect (OSTI)

    Onar, Omer C; Tang, Lixin; Chinthavali, Madhu Sudhan; Campbell, Steven L; Miller , John M.

    2014-01-01

    Wireless Power Transfer (WPT) technology is a novel research area in the charging technology that bridges the utility and the automotive industries. There are various solutions that are currently being evaluated by several research teams to find the most efficient way to manage the power flow from the grid to the vehicle energy storage system. There are different control parameters that can be utilized to compensate for the change in the impedance due to variable parameters such as battery state-of-charge, coupling factor, and coil misalignment. This paper presents the implementation of an active front-end rectifier on the grid side for power factor control and voltage boost capability for load power regulation. The proposed SiC MOSFET based single phase active front end rectifier with PFC resulted in >97% efficiency at 137mm air-gap and >95% efficiency at 160mm air-gap.

  9. Factors Affecting Power Output by Photovoltaic Cells Lesson

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunitiesofExtransScientific User Facility |FactFact SheetsARMSuzanne

  10. ORNL/CP-97155 Instantaneous Reactive Power and Power Factor of

    Office of Scientific and Technical Information (OSTI)

    12-16, 1998, St. Louis, MO. 5 H. Akagi, Y. Kanazawa, A. Nabae, "Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components," IEEE...

  11. Testing and Evaluation of a Power Factor Correction for Power-Savings Potential 

    E-Print Network [OSTI]

    Alotaibi, A.

    2011-01-01

    is to develop the electromagnetic fields (EMFs) to ground the induction windings of the motor. In Kuwait, consumers only pay for the active power and energy used in kWh. A PFC unit stores the reactive power needed to create EMFs within the inductive loads...

  12. Application of power-factor correction in the Tandem Mirror Experiment Upgrade magnet power supply

    SciTech Connect (OSTI)

    Corvin, W.C.

    1981-08-14

    The magnet power supply for the Tandem Mirror Experiment Upgrade (TMX Upgrade) contains 24 groups of dc rectifiers that feed the water-cooled magnets. Each group consists of five or less rectifiers, connected in series. All 24 are current-regulating, using phase-controlled bilateral thyristors in the rectifier transformer primaries. The electric utility system must furnish reactive power to these phase-controlled thyristors as well as to the cmmutating diodes in the rectifier bridges.

  13. Hopf-Type Intermediate-Scale Bifurcation in Single-Stage Power-Factor-Correction Power

    E-Print Network [OSTI]

    Tse, Chi K. "Michael"

    in PFC boost converter [8] and is referred to as slow-scale instability in this paper. In practice-end boost converter serves as a 1L 1D 1 'D 1C S 2D 2L 2r 2 'D 2C R 1r in ( )v t boost PFC converter forward converter Fig. 1. The single-stage isolated PFC power supply (SSIPP) [3]. This circuit consists of a boost

  14. Human Factors Aspects of Power System Voltage Visualizations Douglas A. Wiegmann Aaron M. Rich Thomas J. Overbye Yan Sun

    E-Print Network [OSTI]

    Human Factors Aspects of Power System Voltage Visualizations Douglas A. Wiegmann Aaron M. Rich with the human factors aspects of using color contours to visualize electric power system bus voltage magnitude in need of new research is the visualization of electric power system operation and analysis information

  15. MODELING OF HIGH-POWER-FACTOR RECTIFIERS BASED ON SWITCHING CONVERTERS

    E-Print Network [OSTI]

    boost [l]and up/down (flyback, kuk, Sepic, etc.) converters [a]. The purpose of this paper is to present. Specific results are discussed in detail for boost and up/down converters, which are most frequently usedMODELING OF HIGH-POWER-FACTOR RECTIFIERS BASED ON SWITCHING CONVERTERS WITH NONLINEAR

  16. Factorized power expansion for high-pT heavy quarkonium production

    SciTech Connect (OSTI)

    Ma, Yan-Qing; Qiu, Jian-Wei; Sterman, George; Zhang, Hong

    2014-10-02

    We show that when the factorized cross section for heavy quarkonium production includes next-to-leading power contributions associated with the production of the heavy quark pair at short distances, it naturally reproduces all high pT results calculated in nonrelativistic QCD (NRQCD) factorization. This extended formalism requires fragmentation functions for heavy quark pairs, as well as for light partons. When these fragmentation functions are themselves calculated using NRQCD, we find that two of the four leading NRQCD production channels, ³S[1]1 and ¹S[8]0, are dominated by the next-to-leading power contributions for a very wide pT range. The large next-to-leading order corrections of NRQCD are absorbed into the leading order of the first power correction. The impact of this finding on heavy quarkonium production and its polarization is discussed.

  17. Factorized power expansion for high-pT heavy quarkonium production

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

    Ma, Yan-Qing [Brookhaven National Laboratory, Physics Department, Upton, NY (United States); Qiu, Jian-Wei [Brookhaven National Laboratory, Physics Department, Upton, NY (United States); Stony Brook University, C.N. Yang Institute for Theoretical Physics, Department of Physics and Astronomy, Stony Brook, NY (United States); Sterman, George [Stony Brook University, C.N. Yang Institute for Theoretical Physics, Department of Physics and Astronomy, Stony Brook, NY (United States); Zhang, Hong [Stony Brook University, Department of Physics and Astronomy, Stony Brook, NY (United States)

    2014-10-01

    We show that when the factorized cross section for heavy quarkonium production includes next-to-leading power contributions associated with the production of the heavy quark pair at short distances, it naturally reproduces all high pT results calculated in nonrelativistic QCD (NRQCD) factorization. This extended formalism requires fragmentation functions for heavy quark pairs, as well as for light partons. When these fragmentation functions are themselves calculated using NRQCD, we find that two of the four leading NRQCD production channels, ³S[1]1 and ¹S[8]0, are dominated by the next-to-leading power contributions for a very wide pT range. The large next-to-leading order corrections of NRQCD are absorbed into the leading order of the first power correction. The impact of this finding on heavy quarkonium production and its polarization is discussed.

  18. Factorized power expansion for high-pT heavy quarkonium production

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

    Ma, Yan -Qing; Qiu, Jian -Wei; Sterman, George; Zhang, Hong

    2014-10-02

    In this study, we show that when the factorized cross section for heavy quarkonium production includes next-to-leading power contributions associated with the production of the heavy quark pair at short distances, it naturally reproduces all high pT results calculated in nonrelativistic QCD (NRQCD) factorization. This extended formalism requires fragmentation functions for heavy quark pairs, as well as for light partons. When these fragmentation functions are themselves calculated using NRQCD, we find that two of the four leading NRQCD production channels, ³S[1]1 and ¹S[8]0, are dominated by the next-to-leading power contributions for a very wide pT range. The large next-to-leading ordermore »corrections of NRQCD are absorbed into the leading order of the first power correction. The impact of this finding on heavy quarkonium production and its polarization is discussed.« less

  19. Factorized power expansion for high-pT heavy quarkonium production

    SciTech Connect (OSTI)

    Ma, Yan-Qing [Brookhaven National Laboratory, Physics Department, Upton, NY (United States); Qiu, Jian-Wei [Brookhaven National Laboratory, Physics Department, Upton, NY (United States); Stony Brook University, C.N. Yang Institute for Theoretical Physics, Department of Physics and Astronomy, Stony Brook, NY (United States); Sterman, George [Stony Brook University, C.N. Yang Institute for Theoretical Physics, Department of Physics and Astronomy, Stony Brook, NY (United States); Zhang, Hong [Stony Brook University, Department of Physics and Astronomy, Stony Brook, NY (United States)

    2014-10-01

    We show that when the factorized cross section for heavy quarkonium production includes next-to-leading power contributions associated with the production of the heavy quark pair at short distances, it naturally reproduces all high pT results calculated in nonrelativistic QCD (NRQCD) factorization. This extended formalism requires fragmentation functions for heavy quark pairs, as well as for light partons. When these fragmentation functions are themselves calculated using NRQCD, we find that two of the four leading NRQCD production channels, ³S[1]1 and ¹S[8]0, are dominated by the next-to-leading power contributions for a very wide pT range. The large next-to-leading order corrections of NRQCD are absorbed into the leading order of the first power correction. The impact of this finding on heavy quarkonium production and its polarization is discussed.

  20. IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 13, NO. 2, MARCH 1998 213 Nonlinear-Carrier Control for High-Power-Factor

    E-Print Network [OSTI]

    the NLC controllers were introduced for rectifiers based on the boost converter. The main idea for High-Power-Factor Rectifiers Based on Up­Down Switching Converters Regan Zane and Dragan Maksimovi-power-factor rectifiers based on flyback, ´Cuk, Sepic, and other up­down converters operated in the continuous conduction

  1. Factorized power expansion for high-$p_T$ heavy quarkonium production

    E-Print Network [OSTI]

    Ma, Yan-Qing; Sterman, George; Zhang, Hong

    2014-01-01

    We show that when the factorized cross section for heavy quarkonium production includes next-to-leading power (NLP) contributions associated with the production of the heavy quark pair at short distances, it naturally reproduces all high $p_T$ results calculated in non-relativistic QCD (NRQCD) factorization. This extended formalism requires fragmentation functions for heavy quark pairs, as well as for light partons. When these fragmentation functions are themselves calculated using NRQCD, we find that two of the four leading NRQCD production channels, ${^3\\hspace{-0.6mm}S_{1}^{[1]}}$ and ${^1\\hspace{-0.6mm}S_{0}^{[8]}}$, are dominated by the NLP contributions for a very wide $p_T$ range. The large next-to-leading order corrections of NRQCD are absorbed into the leading order of the first power correction. The impact of this finding on the heavy quarkonium production and its polarization is discussed.

  2. Factorized power expansion for high-$p_T$ heavy quarkonium production

    E-Print Network [OSTI]

    Yan-Qing Ma; Jian-Wei Qiu; George Sterman; Hong Zhang

    2014-10-11

    We show that when the factorized cross section for heavy quarkonium production includes next-to-leading power (NLP) contributions associated with the production of the heavy quark pair at short distances, it naturally reproduces all high $p_T$ results calculated in non-relativistic QCD (NRQCD) factorization. This extended formalism requires fragmentation functions for heavy quark pairs, as well as for light partons. When these fragmentation functions are themselves calculated using NRQCD, we find that two of the four leading NRQCD production channels, ${^3\\hspace{-0.6mm}S_{1}^{[1]}}$ and ${^1\\hspace{-0.6mm}S_{0}^{[8]}}$, are dominated by the NLP contributions for a very wide $p_T$ range. The large next-to-leading order corrections of NRQCD are absorbed into the leading order of the first power correction. The impact of this finding on the heavy quarkonium production and its polarization is discussed.

  3. Human Factors Analysis of Power System Visualizations Thomas J. Overbye Douglas A. Wiegmann Aaron M. Rich Yan Sun

    E-Print Network [OSTI]

    Human Factors Analysis of Power System Visualizations Thomas J. Overbye Douglas A. Wiegmann Aaron M testing the usability of different power system visualizations. In particular, the ability of participants to assess and correct power system voltage problems was tested. Participants were divided into three groups

  4. Band structure engineering through orbital interaction for enhanced thermoelectric power factor

    SciTech Connect (OSTI)

    Zhu, Hong; Sun, Wenhao; Ceder, Gerbrand; Armiento, Rickard; Lazic, Predrag

    2014-02-24

    Band structure engineering for specific electronic or optical properties is essential for the further development of many important technologies including thermoelectrics, optoelectronics, and microelectronics. In this work, we report orbital interaction as a powerful tool to finetune the band structure and the transport properties of charge carriers in bulk crystalline semiconductors. The proposed mechanism of orbital interaction on band structure is demonstrated for IV-VI thermoelectric semiconductors. For IV-VI materials, we find that the convergence of multiple carrier pockets not only displays a strong correlation with the s-p and spin-orbit coupling but also coincides with the enhancement of power factor. Our results suggest a useful path to engineer the band structure and an enticing solid-solution design principle to enhance thermoelectric performance.

  5. Fusion Rules of the Lowest Weight Representations of osp_q(1|2) at Roots of Unity: Polynomial Realization and Degeneration at Roots of Unity

    E-Print Network [OSTI]

    D. Karakhanyan; Sh. Khachatryan

    2009-08-27

    The degeneracy of the lowest weight representations of the quantum superalgebra $osp_q(1|2)$ and their tensor products at exceptional values of %when deformation parameter $q$ takes exceptional values is studied. The main features of the structures of the finite dimensional lowest weight representations and their fusion rules are illustrated using realization of group generators as finite-difference operators acting in the space of the polynomials. The complete fusion rules for the decompositions of the tensor products at roots of unity are presented. The appearance of indecomposable representations in the fusions is described using Clebsh-Gordan coefficients derived for general values of $q$ and at roots of unity.

  6. Influence of germanium nano-inclusions on the thermoelectric power factor of bulk bismuth telluride alloy

    SciTech Connect (OSTI)

    Satyala, Nikhil; Zamanipour, Zahra; Norouzzadeh, Payam; Krasinski, Jerzy S.; Vashaee, Daryoosh, E-mail: daryoosh.vashaee@okstate.edu [School of Electrical and Computer Engineering, Helmerich Advanced Technology Research Center, Oklahoma State University, Tulsa, Oklahoma 74106 (United States); Tahmasbi Rad, Armin [School of Material Science and Engineering, Helmerich Advanced Technology Research Center, Oklahoma State University, Tulsa, Oklahoma 74106 (United States); Tayebi, Lobat, E-mail: daryoosh.vashaee@okstate.edu [School of Chemical Engineering, Oklahoma State University, Stillwater, Oklahoma 74078 (United States)

    2014-05-28

    Nanocomposite thermoelectric compound of bismuth telluride (Bi{sub 2}Te{sub 3}) with 5 at. % germanium nano-inclusions was prepared via mechanically alloying and sintering techniques. The influence of Ge nano-inclusions and long duration annealing on the thermoelectric properties of nanostructured Bi{sub 2}Te{sub 3} were investigated. It was found that annealing has significant effect on the carrier concentration, Seebeck coefficient, and the power factor of the thermoelectric compound. The systematic heat treatment also reduced the density of donor type defects thereby decreasing the electron concentration. While the as-pressed nanocomposite materials showed n-type properties, it was observed that with the increase of annealing time, the nanocomposite gradually transformed to an abundantly hole-dominated (p-type) sample. The long duration annealing (?500 h) resulted in a significantly enhanced electrical conductivity pertaining to the augmentation in the density and the structural properties of the sample. Therefore, a simultaneous enhancement in both electrical and Seebeck coefficient characteristics resulted in a remarkable increase in the thermoelectric power factor.

  7. Enhanced power factor of higher manganese silicide via melt spin synthesis method

    SciTech Connect (OSTI)

    Shi, Xiaoya; Shi, Xun; Li, Yulong; He, Ying; Chen, Lidong; Li, Qiang

    2014-12-30

    We report on the thermoelectric properties of the Higher Manganese Silicide MnSi?.?? (HMS) synthesized by means of a one-step non-equilibrium method. The ultrahigh cooling rate generated from the melt-spin technique is found to be effective in reducing second phases, which are inevitable during the traditional solid state diffusion processes. Aside from being detrimental to thermoelectric properties, second phases skew the revealing of the intrinsic properties of this class of materials, for example the optimal level of carrier concentration. With this melt-spin sample, we are able to formulate a simple model based on a single parabolic band that can well describe the carrier concentration dependence of the Seebeck coefficient and power factor of the data reported in the literature. An optimal carrier concentration around 5x10²? cm?³ at 300 K is predicted according to this model. The phase-pure melt-spin sample shows the largest power factor at high temperature, resulting in the highest zT value among the three samples in this paper. And the maximum value is superior to those reported in the literatures.

  8. Enhanced power factor of higher manganese silicide via melt spin synthesis method

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

    Shi, Xiaoya; Shi, Xun; Li, Yulong; He, Ying; Chen, Lidong; Li, Qiang

    2014-12-30

    We report on the thermoelectric properties of the Higher Manganese Silicide MnSi?.?? (HMS) synthesized by means of a one-step non-equilibrium method. The ultrahigh cooling rate generated from the melt-spin technique is found to be effective in reducing second phases, which are inevitable during the traditional solid state diffusion processes. Aside from being detrimental to thermoelectric properties, second phases skew the revealing of the intrinsic properties of this class of materials, for example the optimal level of carrier concentration. With this melt-spin sample, we are able to formulate a simple model based on a single parabolic band that can well describemore »the carrier concentration dependence of the Seebeck coefficient and power factor of the data reported in the literature. An optimal carrier concentration around 5x10²? cm?³ at 300 K is predicted according to this model. The phase-pure melt-spin sample shows the largest power factor at high temperature, resulting in the highest zT value among the three samples in this paper; the maximum value is superior to those reported in the literatures.« less

  9. Enhanced power factor of higher manganese silicide via melt spin synthesis method

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

    Shi, Xiaoya [Brookhaven National Lab. (BNL), Upton, NY (United States); Shi, Xun [Chinese Academy of Sciences, Shanghai (China); Li, Yulong [Chinese Academy of Sciences, Shanghai (China); He, Ying [Chinese Academy of Sciences, Shanghai (China); Chen, Lidong [Chinese Academy of Sciences, Shanghai (China); Li, Qiang [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2014-12-28

    We report on the thermoelectric properties of the Higher Manganese Silicide MnSi?.?? (HMS) synthesized by means of a one-step non-equilibrium method. The ultrahigh cooling rate generated from the melt-spin technique is found to be effective in reducing second phases, which are inevitable during the traditional solid state diffusion processes. Aside from being detrimental to thermoelectric properties, second phases skew the revealing of the intrinsic properties of this class of materials, for example the optimal level of carrier concentration. With this melt-spin sample, we are able to formulate a simple model based on a single parabolic band that can well describe the carrier concentration dependence of the Seebeck coefficient and power factor of the data reported in the literature. An optimal carrier concentration around 5x10²? cm?³ at 300 K is predicted according to this model. The phase-pure melt-spin sample shows the largest power factor at high temperature, resulting in the highest zT value among the three samples in this paper. And the maximum value is superior to those reported in the literatures.

  10. Thermoelectric power factor enhancement by ionized nanoparticle scattering Je-Hyeong Bahk, Zhixi Bian, Mona Zebarjadi, Parthiban Santhanam, Rajeev Ram, and Ali Shakouri

    E-Print Network [OSTI]

    Ram, Rajeev J.

    Thermoelectric power factor enhancement by ionized nanoparticle scattering Je-Hyeong Bahk, Zhixi 15:21:35 #12;Thermoelectric power factor enhancement by ionized nanoparticle scattering Je 2011) We show theoretically that the thermoelectric power factor can be enhanced in degenerate

  11. Estimating carbon dioxide emissions factors for the California electric power sector

    E-Print Network [OSTI]

    Marnay, Chris; Fisher, Diane; Murtishaw, Scott; Phadke, Amol; Price, Lynn; Sathaye, Jayant

    2002-01-01

    that, in California, combined heat and power plants (CHP orout-of-state power plants serving California in 1990. Thesethat California utilities take power from these plants

  12. Estimating carbon dioxide emission factors for the California electric power sector

    SciTech Connect (OSTI)

    Marnay, Chris; Fisher, Diane; Murtishaw, Scott; Phadke, Amol; Price, Lynn; Sathaye, Jayant

    2002-08-01

    The California Climate Action Registry (''Registry'') was initially established in 2000 under Senate Bill 1771, and clarifying legislation (Senate Bill 527) was passed in September 2001. The Ernest Orlando Lawrence Berkeley National Laboratory (Berkeley Lab) has been asked to provide technical assistance to the California Energy Commission (CEC) in establishing methods for calculating average and marginal electricity emissions factors, both historic and current, as well as statewide and for sub-regions. This study is exploratory in nature. It illustrates the use of three possible approaches and is not a rigorous estimation of actual emissions factors. While the Registry will ultimately cover emissions of all greenhouse gases (GHGs), presently it is focusing on carbon dioxide (CO2). Thus, this study only considers CO2, which is by far the largest GHG emitted in the power sector. Associating CO2 emissions with electricity consumption encounters three major complications. First, electricity can be generated from a number of different primary energy sources, many of which are large sources of CO2 emissions (e.g., coal combustion) while others result in virtually no CO{sub 2} emissions (e.g., hydro). Second, the mix of generation resources used to meet loads may vary at different times of day or in different seasons. Third, electrical energy is transported over long distances by complex transmission and distribution systems, so the generation sources related to electricity usage can be difficult to trace and may occur far from the jurisdiction in which that energy is consumed. In other words, the emissions resulting from electricity consumption vary considerably depending on when and where it is used since this affects the generation sources providing the power. There is no practical way to identify where or how all the electricity used by a certain customer was generated, but by reviewing public sources of data the total emission burden of a customer's electricity supplier can b e found and an average emissions factor (AEF) calculated. These are useful for assigning a net emission burden to a facility. In addition, marginal emissions factors (MEFs) for estimating the effect of changing levels of usage can be calculated. MEFs are needed because emission rates at the margin are likely to diverge from the average. The overall objective of this task is to develop methods for estimating AEFs and MEFs that can provide an estimate of the combined net CO2 emissions from all generating facilities that provide electricity to California electricity customers. The method covers the historic period from 1990 to the present, with 1990 and 1999 used as test years. The factors derived take into account the location and time of consumption, direct contracts for power which may have certain atypical characteristics (e.g., ''green'' electricity from renewable resources), resource mixes of electricity providers, import and export of electricity from utility owned and other sources, and electricity from cogeneration. It is assumed that the factors developed in this way will diverge considerably from simple statewide AEF estimates based on standardized inventory estimates that use conventions inconsistent with the goals of this work. A notable example concerns the treatment of imports, which despite providing a significant share of California's electricity supply picture, are excluded from inventory estimates of emissions, which are based on geographical boundaries of the state.

  13. Applying Human Factors Evaluation and Design Guidance to a Nuclear Power Plant Digital Control System

    SciTech Connect (OSTI)

    Thomas Ulrich; Ronald Boring; William Phoenix; Emily Dehority; Tim Whiting; Jonathan Morrell; Rhett Backstrom

    2012-08-01

    The United States (U.S.) nuclear industry, like similar process control industries, has moved toward upgrading its control rooms. The upgraded control rooms typically feature digital control system (DCS) displays embedded in the panels. These displays gather information from the system and represent that information on a single display surface. In this manner, the DCS combines many previously separate analog indicators and controls into a single digital display, whereby the operators can toggle between multiple windows to monitor and control different aspects of the plant. The design of the DCS depends on the function of the system it monitors, but revolves around presenting the information most germane to an operator at any point in time. DCSs require a carefully designed human system interface. This report centers on redesigning existing DCS displays for an example chemical volume control system (CVCS) at a U.S. nuclear power plant. The crucial nature of the CVCS, which controls coolant levels and boration in the primary system, requires a thorough human factors evaluation of its supporting DCS. The initial digital controls being developed for the DCSs tend to directly mimic the former analog controls. There are, however, unique operator interactions with a digital vs. analog interface, and the differences have not always been carefully factored in the translation of an analog interface to a replacement DCS. To ensure safety, efficiency, and usability of the emerging DCSs, a human factors usability evaluation was conducted on a CVCS DCS currently being used and refined at an existing U.S. nuclear power plant. Subject matter experts from process control engineering, software development, and human factors evaluated the DCS displays to document potential usability issues and propose design recommendations. The evaluation yielded 167 potential usability issues with the DCS. These issues should not be considered operator performance problems but rather opportunities identified by experts to improve upon the design of the DCS. A set of nine design recommendations was developed to address these potential issues. The design principles addressed the following areas: (1) color, (2) pop-up window structure, (3) navigation, (4) alarms, (5) process control diagram, (6) gestalt grouping, (7) typography, (8) terminology, and (9) data entry. Visuals illustrating the improved DCS displays accompany the design recommendations. These nine design principles serve as the starting point to a planned general DCS style guide that can be used across the U.S. nuclear industry to aid in the future design of effective DCS interfaces.

  14. Primer on Durability of Nuclear Power Plant Reinforced Concrete Structures - A Review of Pertinent Factors

    SciTech Connect (OSTI)

    Naus, Dan J [ORNL

    2007-02-01

    The objective of this study was to provide a primer on the environmental effects that can affect the durability of nuclear power plant concrete structures. As concrete ages, changes in its properties will occur as a result of continuing microstructural changes (i.e., slow hydration, crystallization of amorphous constituents, and reactions between cement paste and aggregates), as well as environmental influences. These changes do not have to be detrimental to the point that concrete will not be able to meet its performance requirements. Concrete, however, can suffer undesirable changes with time because of improper specifications, a violation of specifications, or adverse performance of its cement paste matrix or aggregate constituents under either physical or chemical attack. Contained in this report is a discussion on concrete durability and the relationship between durability and performance, a review of the historical perspective related to concrete and longevity, a description of the basic materials that comprise reinforced concrete, and information on the environmental factors that can affect the performance of nuclear power plant concrete structures. Commentary is provided on the importance of an aging management program.

  15. A new high performance AC to DC rectifier with input power factor correction and harmonic reduction capacity 

    E-Print Network [OSTI]

    Martinez, Roberto

    1994-01-01

    been at my side sharing my glory and pains, always willing to lend a good ear and a good hand. TABLE OF CONTENTS CHAPTER I INTRODUCTION Page 1. 1 What Is Power Factor? I. 2 Cause of Low Power Factor-Diode Bridge Rectifier with Output Filter... 78 78 83 85 V CONCLUSION 86 V. I Conclusions V. 2 Suggestions for Future Work REFERENCES 86 88 89 APPENDIX 91 A. PSPICE SIMULATIONS 91 A. I Diode Bridge Rectifier Circuit A. 2 LC Low-Pass Filter Circuit A. 3 LC Series Resonant Circuit...

  16. Updating Human Factors Engineering Guidelines for Conducting Safety Reviews of Nuclear Power Plants

    SciTech Connect (OSTI)

    O, J.M.; Higgins, J.; Stephen Fleger - NRC

    2011-09-19

    The U.S. Nuclear Regulatory Commission (NRC) reviews the human factors engineering (HFE) programs of applicants for nuclear power plant construction permits, operating licenses, standard design certifications, and combined operating licenses. The purpose of these safety reviews is to help ensure that personnel performance and reliability are appropriately supported. Detailed design review procedures and guidance for the evaluations is provided in three key documents: the Standard Review Plan (NUREG-0800), the HFE Program Review Model (NUREG-0711), and the Human-System Interface Design Review Guidelines (NUREG-0700). These documents were last revised in 2007, 2004 and 2002, respectively. The NRC is committed to the periodic update and improvement of the guidance to ensure that it remains a state-of-the-art design evaluation tool. To this end, the NRC is updating its guidance to stay current with recent research on human performance, advances in HFE methods and tools, and new technology being employed in plant and control room design. This paper describes the role of HFE guidelines in the safety review process and the content of the key HFE guidelines used. Then we will present the methodology used to develop HFE guidance and update these documents, and describe the current status of the update program.

  17. Frequency Scalable Non-Linear Waveform Generator for Mixed-Simal Power-Factor-Correction IC Controller'

    E-Print Network [OSTI]

    derives a family of digital non-linear waveform generators fundamental to the developement of an adaptiveFrequency Scalable Non-Linear Waveform Generator for Mixed-Simal Power-Factor-Correction IC of Electrical and Computer Engineering University of Colorado, Boulder, CO 80309-0425 Abstract This paper

  18. Enhancing the Thermoelectric Power Factor with Highly Mismatched Isoelectronic Doping Joo-Hyoung Lee,1,4

    E-Print Network [OSTI]

    Wu, Junqiao

    Enhancing the Thermoelectric Power Factor with Highly Mismatched Isoelectronic Doping Joo; published 8 January 2010) We investigate the effect of O impurities on the thermoelectric properties of Zn performance thermoelectric applications. DOI: 10.1103/PhysRevLett.104.016602 PACS numbers: 72.20.Pa, 71.15.Àm

  19. Integral Modular Categories and Integrality of Quantum Invariants at Roots of Unity of

    E-Print Network [OSTI]

    Masbaum, Gregor

    Integral Modular Categories and Integrality of Quantum Invariants at Roots of Unity of Prime Order G. Masbaum H. Wenzl May 29, 1998 \\Lambda Abstract It is shown how to deduce integrality properties of quantum 3­manifold invari­ ants from the existence of integral subcategories of modular categories

  20. Light trapping and near-unity solar absorption in a three-dimensional photonic-crystal

    E-Print Network [OSTI]

    John, Sajeev

    Light trapping and near-unity solar absorption in a three-dimensional photonic-crystal Ping Kuang,1-cubic photonic-crystal. PIR is an acutely negative refraction of light inside a photonic- crystal, leading to light-bending by nearly 90 deg over broad wavelengths (). The consequence is a longer path length

  1. Application of positive matrix factorization to on-road measurements for source apportionment of diesel-and gasoline-powered vehicle emissions in Mexico City

    E-Print Network [OSTI]

    Meskhidze, Nicholas

    of diesel- and gasoline-powered vehicle emissions in Mexico City D. A. Thornhill, A. E. Williams, T. B be low. The second figure shows the background versus diesel factors. There may be a slight horizontal factors. In this case, even when the diesel factor's contributions are very high, the background factor

  2. Weakness, power and unity Wilson Poon, St. Peter's, Luton Place, Edinburgh, 23rd

    E-Print Network [OSTI]

    Poon, Wilson

    to the Province of Macedonia to preach the gospel there, which he did. But then everything went pear shaped. He. His friends from Beroea had to smuggle him out of Macedonia all together. Then, at the university city

  3. Power Factor Correctors for Rectifiers Chavdar Korsemov, Zdravko Nikolov, Stefan Koynov

    E-Print Network [OSTI]

    Borissova, Daniela

    is followed by an amplifying converter of a boost type allowing to change the input currentin asinusoidmanner consumers with powers greater than 500 W. 2. Basicparameters ofthe converter

  4. Energy Policy 35 (2007) 15841598 Public opinion about large offshore wind power: Underlying factors

    E-Print Network [OSTI]

    Firestone, Jeremy

    2007-01-01

    Energy Policy 35 (2007) 1584­1598 Public opinion about large offshore wind power: Underlying opinion regarding offshore wind power based on a survey of residents near a proposed development off Cape, the first offshore wind proposal in North America, in Nantucket Sound (MA, USA) has generated a strong

  5. Efficiency Optimization for a Power Factor Correction (PFC) Rectifier with Gallium Nitride

    E-Print Network [OSTI]

    Paderborn, Universität

    and utilized to identify the best design by numeric optimization of switching frequency, number of turns) and to increase the power density. Despite of the comparable low switching losses of GaN transistors circuit that achieves negative voltage at switch-off with a unipolar power supply is described in Section

  6. Assessment of wind power predictability as a decision factor in the investment phase of wind farms

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the point of view of a producer participating in the day-ahead electricity market, lack of predictability price settlement mechanism will remain the same. Keywords: Wind power resource assessment, Wind power GW by 2020 according to EWEA projections (see [1]). Such large-scale integration of wind energy

  7. Large Thermoelectric Power Factor in P-type Si (110)/[110] Ultra-Thin-Layers Compared to Differently Oriented Channels

    E-Print Network [OSTI]

    1 Large Thermoelectric Power Factor in P-type Si (110)/[110] Ultra-Thin-Layers Compared the thermoelectric power factor of ultra-thin-body p-type Si layers of thicknesses from W=3nm up to 10nm. We show improvement in 2D thin- layers of zincblende semiconductors. Keywords: low-dimensional thermoelectrics

  8. NONLINEAR-CARRIER CONTROL FOR HIGH-POWER-FACTOR RECTIFIERS BASED ON

    E-Print Network [OSTI]

    controllers were introduced for rectifiers based on the boost converter. Nonlinear-carrier control CONVERTERS Regan Zane and Dragan MaksimoviC Power Electronics Group Department of Elect,rical and Computer based on flyback, Cuk or Sepic converters operated in the continuous conduction mode. In the NLC con

  9. Human factors review for nuclear power plant severe accident sequence analysis

    SciTech Connect (OSTI)

    Krois, P.A.; Haas, P.M.

    1985-01-01

    The paper discusses work conducted to: (1) support the severe accident sequence analysis of a nuclear power plant transient based on an assessment of operator actions, and (2) develop a descriptive model of operator severe accident management. Operator actions during the transient are assessed using qualitative and quantitative methods. A function-oriented accident management model provides a structure for developing technical operator guidance on mitigating core damage preventing radiological release.

  10. Different Factors Affecting Short Circuit Behavior of a Wind Power Plant

    SciTech Connect (OSTI)

    Muljadi, E.; Samaan, Nader A.; Gevorgian, Vahan; Li, Jun; Pasupulati, Subbaiah

    2013-01-31

    A wind power plant consists of a large number of turbines interconnected by underground cable. A pad-mount transformer at each turbine steps up the voltage from generating voltage (690 V) to a medium voltage (34.5 kV). All turbines in the plant are connected to the substation transformer where the voltage is stepped up to the transmission level. An important aspect of wind power plant (WPP) impact studies is to evaluate the short-circuit (SC) current contribution of the plant into the transmission network under different fault conditions. This task can be challenging to protection engineers due to the topology differences between different types of wind turbine generators (WTGs) and the conventional generating units. This paper investigates the short circuit behavior of a wind power plant for different types of faults. The impact of wind turbine types, the transformer configuration, and the reactive compensation capacitor will be investigated. The voltage response at different buses will be observed. Finally, the SC line currents will be presented along with its symmetrical components.

  11. Different Factors Affecting Short Circuit Behavior of a Wind Power Plant

    SciTech Connect (OSTI)

    Muljadi, E.; Samaan, Nader A.; Gevorgian, Vahan; Li, Jun; Pasupulati, Subbaiah

    2010-12-21

    A wind power plant consists of a large number of turbines interconnected by underground cable. A pad-mount transformer at each turbine steps up the voltage from generating voltage (690 V) to a medium voltage (34.5 kV). All turbines in the plant are connected to the substation transformer where the voltage is stepped up to the transmission level. An important aspect of wind power plant (WPP) impact studies is to evaluate the short-circuit (SC) current contribution of the plant into the transmission network under different fault conditions. This task can be challenging to protection engineers due to the topology differences between different types of wind turbine generators (WTGs) and the conventional generating units. This paper investigates the short circuit behavior of a wind power plant for different types of faults. The impact of wind turbine types, the transformer configuration, and the reactive compensation capacitor will be investigated. The voltage response at different buses will be observed. Finally, the SC line currents will be presented along with its symmetrical components.

  12. Improved assessment of population doses and risk factors for a nuclear power plant under accident conditions 

    E-Print Network [OSTI]

    Meyer, Christopher Martin

    1985-01-01

    result of an accident with the severity of those postulated in WASH-1400. These changes are nearly impossible to predict and even more difficult to quantify. For the purposes of this study, calculations will primarily be restricted to individual...IMPROVED ASSESSMENT OF POPULATION DOSES AND RISK FACTORS FOR A NUCLEAR PONER PLANT UNDER ACCIDENT CONDITIONS A Thesis by CHRISTOPHER MARTIN NEVER Submitted to the Graduate College of Texas A&M University in partial fulfillment...

  13. Calculated transport properties of CdO: thermal conductivity and thermoelectric power factor

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

    Lindsay, Lucas R.; Parker, David S.

    2015-10-01

    We present first principles calculations of the thermal and electronic transport properties of the oxide semiconductor CdO. In particular, we find from theory that the accepted thermal conductivity ? value of 0.7 Wm-1K-1 is approximately one order of magnitude too small; our calculations of ? of CdO are in good agreement with recent measurements. We also find that alloying of MgO with CdO is an effective means to reduce the lattice contribution to ?, despite MgO having a much larger thermal conductivity. We further consider the electronic structure of CdO in relation to thermoelectric performance, finding that large thermoelectric powermore »factors may occur if the material can be heavily doped p-type. This work develops insight into the nature of thermal and electronic transport in an important oxide semiconductor.« less

  14. Power-Factor Calculation under Consideration of Cross Saturation of the Interior Permanent Magnet Synchronous Motor with Brushless Field Excitation

    SciTech Connect (OSTI)

    Lee, Seong T [ORNL; Burress, Timothy A [ORNL; Hsu, John S [ORNL

    2009-01-01

    This paper introduces a new method for calculating the power factor with consideration of the cross saturation between the direct-axis (d-axis) and the quadrature-axis (q-axis) of an interior permanent magnet synchronous motor (IPMSM). The conventional two-axis IPMSM model is modified to include the cross-saturation effect by adding the cross-coupled inductance terms. This paper also contains the new method of calculating the cross-coupled inductance values as well as self-inductance values in d- and q-axes. The analyzed motor is a high-speed brushless field excitation machine that offers high torque per ampere per core length at low speed and weakened flux at high speed, which was developed for the traction motor of a hybrid electric vehicle.

  15. Human factors design, verification, and validation for two types of control room upgrades at a nuclear power plant

    SciTech Connect (OSTI)

    Boring, Laurids Ronald

    2014-10-01

    This paper describes the NUREG-0711 based human factors engineering (HFE) phases and associated elements required to support design, verification and validation (V&V), and implementation of a new plant process computer (PPC) and turbine control system (TCS) at a representative nuclear power plant. This paper reviews ways to take a human-system interface (HSI) specification and use it when migrating legacy PPC displays or designing displays with new functionality. These displays undergo iterative usability testing during the design phase and then undergo an integrated system validation (ISV) in a full scope control room training simulator. Following the successful demonstration of operator performance with the systems during the ISV, the new system is implemented at the plant, first in the training simulator and then in the main control room.

  16. Verification of maximum radial power peaking factor due to insertion of FPM-LEU target in the core of RSG-GAS reactor

    SciTech Connect (OSTI)

    Setyawan, Daddy, E-mail: d.setyawan@bapeten.go.id [Center for Assessment of Regulatory System and Technology for Nuclear Installations and Materials, Indonesian Nuclear Energy Regulatory Agency (BAPETEN), Jl. Gajah Mada No. 8 Jakarta 10120 (Indonesia); Rohman, Budi [Licensing Directorate for Nuclear Installations and Materials, Indonesian Nuclear Energy Regulatory Agency (BAPETEN), Jl. Gajah Mada No. 8 Jakarta 10120 (Indonesia)

    2014-09-30

    Verification of Maximum Radial Power Peaking Factor due to insertion of FPM-LEU target in the core of RSG-GAS Reactor. Radial Power Peaking Factor in RSG-GAS Reactor is a very important parameter for the safety of RSG-GAS reactor during operation. Data of radial power peaking factor due to the insertion of Fission Product Molybdenum with Low Enriched Uranium (FPM-LEU) was reported by PRSG to BAPETEN through the Safety Analysis Report RSG-GAS for FPM-LEU target irradiation. In order to support the evaluation of the Safety Analysis Report incorporated in the submission, the assessment unit of BAPETEN is carrying out independent assessment in order to verify safety related parameters in the SAR including neutronic aspect. The work includes verification to the maximum radial power peaking factor change due to the insertion of FPM-LEU target in RSG-GAS Reactor by computational method using MCNP5and ORIGEN2. From the results of calculations, the new maximum value of the radial power peaking factor due to the insertion of FPM-LEU target is 1.27. The results of calculations in this study showed a smaller value than 1.4 the limit allowed in the SAR.

  17. ISO standardization of scaling factor method for low and intermediate level radioactive wastes generated at nuclear power plants

    SciTech Connect (OSTI)

    Kashiwagi, Makoto; Masui, Hideki; Denda, Yasutaka; James, David; Lantes, Bertrand; Mueller, Wolfgang; Garamszeghy, Mike; Leganes, Jose Luis; Maxeiner, Harald; Van Velzen, Leo

    2007-07-01

    Low- and intermediate-level radioactive wastes (L-ILW ) generated at nuclear power plants are disposed of in various countries. In the disposal of such wastes, it is required that the radioactivity concentrations of waste packages should be declared with respect to difficult-to-measure nuclides (DTM nuclides), such as C-14, Ni-63 and a-emitting nuclides, which are often limited to maximum values in disposal licenses, safety cases and/or regulations for maximum radioactive concentrations. To fulfill this requirement, the Scaling Factor method (SF method) has been applied in various countries as a principal method for determining the concentrations of DTM nuclides. In the SF method, the concentrations of DTM nuclides are determined by multiplying the concentrations of certain key nuclides by SF values (the determined ratios of radioactive concentration between DTM nuclides and those key nuclides). The SF values used as conversion factors are determined from the correlation between DTM nuclides and key nuclides such as Co-60. The concentrations of key nuclides are determined by {gamma} ray measurements which can be made comparatively easily from outside the waste package. The SF values are calculated based on the data obtained from the radiochemical analysis of waste samples. The use of SFs, which are empirically based on analytical data, has become established as a widely recognized 'de facto standard'. A number of countries have independently collected nuclide data by analysis over many years and each has developed its own SF method, but all the SF methods that have been adopted are similar. The project team for standardization had been organized for establishing this SF method as a 'de jure standard' in the international standardization system of the International Organization for Standardization (ISO). The project team for standardization has advanced the standardization through technical studies, based upon each country's study results and analysis data. The conclusions reached by the project team was published as ISO International Standard 21238:2007 'The Scaling Factor method to determine the radioactivity of low- and intermediate-level radioactive waste packages generated at nuclear power plants'. This paper gives an introduction to the international standardization process for the SF method and the contents of the recently published International Standard. (authors)

  18. UNITY: Confronting Supernova Cosmology's Statistical and Systematic Uncertainties in a Unified Bayesian Framework

    E-Print Network [OSTI]

    Rubin, David; Barbary, Kyle; Boone, Kyle; Chappell, Greta; Currie, Miles; Deustua, Susana; Fagrelius, Parker; Fruchter, Andrew; Hayden, Brian; Lidman, Chris; Nordin, Jakob; Perlmutter, Saul; Saunders, Clare; Sofiatti, Caroline

    2015-01-01

    While recent supernova cosmology research has benefited from improved measurements, current analysis approaches are not statistically optimal and will prove insufficient for future surveys. This paper discusses the limitations of current supernova cosmological analyses in treating outliers, selection effects, shape- and color-standardization relations, intrinsic dispersion, and heterogeneous observations. We present a new Bayesian framework, called UNITY (Unified Nonlinear Inference for Type-Ia cosmologY), that incorporates significant improvements in our ability to confront these effects. We apply the framework to real supernova observations and demonstrate smaller statistical and systematic uncertainties. We verify earlier results that SNe Ia require nonlinear shape and color standardizations, but we now include these nonlinear relations in a statistically well-justified way. This analysis was blinded, in that the method was first validated on simulated data, and no analysis changes were made after transiti...

  19. Sunto dell'intervento all'Assemblea di Facolt del 12 settembre 2013 1) Perch essere uniti sulla nostra identit culturale comune?

    E-Print Network [OSTI]

    Nesi, Vincenzo

    pragmatica. Credo di poter documentare che sia più efficace cercare, uniti, una nostre migliori energie per contenderci un punto organico. Motivazione ideale. Credo

  20. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 24, NO. 3, AUGUST 2009 1633 Direct Calculation of Line Outage Distribution Factors

    E-Print Network [OSTI]

    Fu, Yong

    Outage Distribution Factors Jiachun Guo, Yong Fu, Member, IEEE, Zuyi Li, Member, IEEE, and Mohammad Shahidehpour, Fellow, IEEE Abstract--Line outage distribution factors (LODFs) are utilized to perform of LODFs, especially with multiple-line outages, could speed up contingency analyses and improve

  1. Capacity Allocation in Multi-cell UMTS Networks for Different Spreading Factors with Perfect and Imperfect Power Control

    E-Print Network [OSTI]

    Akl, Robert

    -to-interference thresh- old from 5 dB to 10 dB and spreading factor values of 256, 64, 16, and 4. 1. Introduction 3G Erlang capacity based on the Lost Call Held (LCH) model as described in [4]. This algorithm cal- culates derive a closed form ex- pression of Erlang capacity for a single type of traffic loading and compare

  2. Central Safety Factor and #12;ßN Control on NSTX-U via Beam Power and Plasma Boundary Shape Modification, using TRANSP for Closed Loop Simulations

    SciTech Connect (OSTI)

    Boyer, M. D. [PPPL; Andre, R. [PPPL; Gates, David A. [PPPL; Gerhardt, S. [PPPL; Goumiri, I. R. [Princeton University; Menard, Jon [PPPL

    2014-08-01

    The high-performance operational goals of NSTX-U will require development of advanced feedback control algorithms, including control of ßN and the safety factor profile. In this work, a novel approach to simultaneously controlling #12;ßN and the value of the safety factor on the magnetic axis, q0, through manipulation of the plasma boundary shape and total beam power, is proposed. Simulations of the proposed scheme show promising results and motivate future experimental implementation and eventual integration into a more complex current profile control scheme planned to include actuation of individual beam powers, density, and loop voltage. As part of this work, a flexible framework for closed loop simulations within the high-fidelity code TRANSP was developed. The framework, used here to identify control-design-oriented models and to tune and test the proposed controller, exploits many of the predictive capabilities of TRANSP and provides a means for performing control calculations based on user-supplied data (controller matrices, target waveforms, etc.). The flexible framework should enable high-fidelity testing of a variety of control algorithms, thereby reducing the amount of expensive experimental time needed to implement new control algorithms on NSTX-U and other devices.

  3. Will the Next Generation Stay or Go? Communications That Support Family Business Unity Steve Lytle Director, The Agnew Company & Principal, Clearpath Services

    E-Print Network [OSTI]

    Will the Next Generation Stay or Go? Communications That Support Family Business Unity Steve Lytle ­ Director, The Agnew Company & Principal, Clearpath Services Wednesday, April 15, 2015 Hayden's Lakefront the future of the family business can often mean the difference between whether successors stay or go

  4. Analysis of environmental factors impacting the life cycle cost analysis of conventional and fuel cell/battery-powered passenger vehicles. Final report

    SciTech Connect (OSTI)

    NONE

    1995-01-31

    This report presents the results of the further developments and testing of the Life Cycle Cost (LCC) Model previously developed by Engineering Systems Management, Inc. (ESM) on behalf of the U.S. Department of Energy (DOE) under contract No. DE-AC02-91CH10491. The Model incorporates specific analytical relationships and cost/performance data relevant to internal combustion engine (ICE) powered vehicles, battery powered electric vehicles (BPEVs), and fuel cell/battery-powered electric vehicles (FCEVs).

  5. Power-Factor and Torque Calculation under Consideration of Cross Saturation of the Interior Permanent Magnet Synchronous Motor with Brushless Field Excitation

    SciTech Connect (OSTI)

    Lee, Seong T [ORNL; Burress, Timothy A [ORNL; Tolbert, Leon M [ORNL

    2009-01-01

    This paper introduces a new method for calculating the power factor and output torque by considering the cross saturation between direct-axis (d-axis) and quadrature-axis (q-axis) of an interior permanent magnet synchronous motor (IPMSM). The conventional two-axis IPMSM model is modified to include the cross saturation effect by adding the cross-coupled inductance terms. This paper also contains the new method of calculating the cross-coupled inductance values as well as self-inductance values in d- and q-axes. The analyzed motor is a high-speed brushless field excitation machine that offers high torque per ampere per core length at low speed and weakened flux at high speed, which was developed for the traction motor of a hybrid electric vehicle. The conventional two-axis IPMSM model was modified to include the cross-saturation effect by adding the cross-coupled inductance terms Ldq and Lqd. By the advantage of the excited structure of the experimental IPMSM, the analyzing works were performed under two conditions, the highest and lowest excited conditions. Therefore, it is possible to investigate the cross-saturation effect when a machine has higher magnetic flux from its rotor. The following is a summary of conclusions that may be drawn from this work: (1) Considering cross saturation of an IPMSM offers more accurate expected values of motor parameters in output torque calculation, especially when negative d-axis current is high; (2) A less saturated synchronous machine could be more affected by the cross-coupled saturation effect; (3) Both cross-coupled inductances, L{sub qd} and L{sub dq}, are mainly governed by d-axis current rather than q-axis current; (4) The modified torque equation, can be used for the dynamic model of an IPMSM for developing a better control model or control strategy; and (5) It is possible that the brushless field excitation structure has a common magnetic flux path on both d- and q-axis, and as a result, the reluctance torque of the machine could be reduced.

  6. Wind Power

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

    Wind Power Bioenergy Power Systems Wind Power Wind Power Main Page Outreach Programs Image Gallery FAQs Links Software Hydro Power INL Home Wind Power Introduction The Wind Power...

  7. J.S. 24 POWER TRANSMISSION AND DISTRIBUTION; VECTORS; ELECTRIC...

    Office of Scientific and Technical Information (OSTI)

    power and power factor of instantaneous phasors Hsu, J.S. 24 POWER TRANSMISSION AND DISTRIBUTION; VECTORS; ELECTRIC CURRENTS; ELECTRIC POTENTIAL; MONITORING; POWER SYSTEMS;...

  8. BONNEVILLE POWER ADMINISTRATION

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

    O&M Costs (Column AZ) Present Value of Periodic Capital Replacement Cost (Column BA) Power System Transmission System Coincident Factor (Column BB) Distribution System...

  9. Fantasies of Maternal Unity in Twentieth- and Twenty-First-Century African Diasporic Women's Fiction and Science Fiction

    E-Print Network [OSTI]

    Lillvis, Kristen

    2011-04-20

    This dissertation explores the power children realize in the past, present, and future from their real or imagined connections to their absent mothers in twentieth- and twenty-first-century African diasporic women's fiction, ...

  10. Application of positive matrix factorization to on-road measurements for source apportionment of diesel- and gasoline-powered vehicle emissions in Mexico City

    E-Print Network [OSTI]

    Thornhill, D. A.

    The goal of this research is to quantify diesel- and gasoline-powered motor vehicle emissions within the Mexico City Metropolitan Area (MCMA) using on-road measurements captured by a mobile laboratory combined with positive ...

  11. Power Plant Power Plant

    E-Print Network [OSTI]

    Stillwater Power Plant Wabuska Power Plant Casa Diablo Power Plant Glass Mountain Geothermal Area Lassen Geothermal Area Coso Hot Springs Power Plants Lake City Geothermal Area Thermo Geothermal Area Lakeview Geothermal Area Raft River Geothermal Area Cove Fort Power Plant Roosevelt Power Plant Borax Lake

  12. Additive Manufacturing/Diagnostics via the High Frequency Induction Heating of Metal Powders: The Determination of the Power Transfer Factor for Fine Metallic Spheres

    SciTech Connect (OSTI)

    Rios, Orlando; Radhakrishnan, Balasubramaniam; Caravias, George; Holcomb, Matthew

    2015-01-01

    Grid Logic Inc. is developing a method for sintering and melting fine metallic powders for additive manufacturing using spatially-compact, high-frequency magnetic fields called Micro-Induction Sintering (MIS). One of the challenges in advancing MIS technology for additive manufacturing is in understanding the power transfer to the particles in a powder bed. This knowledge is important to achieving efficient power transfer, control, and selective particle heating during the MIS process needed for commercialization of the technology. The project s work provided a rigorous physics-based model for induction heating of fine spherical particles as a function of frequency and particle size. This simulation improved upon Grid Logic s earlier models and provides guidance that will make the MIS technology more effective. The project model will be incorporated into Grid Logic s power control circuit of the MIS 3D printer product and its diagnostics technology to optimize the sintering process for part quality and energy efficiency.

  13. Temperature-dependent structural property and power factor of n type thermoelectric Bi{sub 0.90}Sb{sub 0.10} and Bi{sub 0.86}Sb{sub 0.14} alloys

    SciTech Connect (OSTI)

    Malik, K.; Das, Diptasikha; Bandyopadhyay, S.; Banerjee, Aritra; Center for Research in Nanoscience and Nanotechnology, University of Calcutta, JD-2, Sector-III, Saltlake City, Kolkata 700 098 ; Mandal, P.; Srihari, Velaga

    2013-12-09

    Thermal variation of structural property, linear thermal expansion coefficient (?), resistivity (?), thermopower (S), and power factor (PF) of polycrystalline Bi{sub 1-x}Sb{sub x} (x?=?0.10 and 0.14) samples are reported. Temperature-dependent powder diffraction experiments indicate that samples do not undergo any structural phase transition. Rietveld refinement technique has been used to perform detailed structural analysis. Temperature dependence of ? is found to be stronger for Bi{sub 0.90}Sb{sub 0.10}. Also, PF for direct band gap Bi{sub 0.90}Sb{sub 0.10} is higher as compared to that for indirect band gap Bi{sub 0.86}Sb{sub 0.14}. Role of electron-electron and electron-phonon scattering on ?, S, and PF has been discussed.

  14. Aspects of a new class of braid matrices: roots of unity and hyperelliptic $q$ for triangularity, L-algebra,link-invariants, noncommutative spaces

    E-Print Network [OSTI]

    A. Chakrabarti

    2004-12-31

    Various properties of a class of braid matrices, presented before, are studied considering $N^2 \\times N^2 (N=3,4,...)$ vector representations for two subclasses. For $q=1$ the matrices are nontrivial. Triangularity $(\\hat R^2 =I)$ corresponds to polynomial equations for $q$, the solutions ranging from roots of unity to hyperelliptic functions. The algebras of $L-$ operators are studied. As a crucial feature one obtains $2N$ central, group-like, homogenous quadratic functions of $L_{ij}$ constrained to equality among themselves by the $RLL$ equations. They are studied in detail for $N =3$ and are proportional to $I$ for the fundamental $3\\times3$ representation and hence for all iterated coproducts. The implications are analysed through a detailed study of the $9\\times 9$ representation for N=3. The Turaev construction for link invariants is adapted to our class. A skein relation is obtained. Noncommutative spaces associated to our class of $\\hat R$ are constructed. The transfer matrix map is implemented, with the N=3 case as example, for an iterated construction of noncommutative coordinates starting from an $(N-1)$ dimensional commutative base space. Further possibilities, such as multistate statistical models, are indicated.

  15. Geothermal Plant Capacity Factors

    SciTech Connect (OSTI)

    Greg Mines; Jay Nathwani; Christopher Richard; Hillary Hanson; Rachel Wood

    2015-01-01

    The capacity factors recently provided by the Energy Information Administration (EIA) indicated this plant performance metric had declined for geothermal power plants since 2008. Though capacity factor is a term commonly used by geothermal stakeholders to express the ability of a plant to produce power, it is a term frequently misunderstood and in some instances incorrectly used. In this paper we discuss how this capacity factor is defined and utilized by the EIA, including discussion on the information that the EIA requests from operations in their 923 and 860 forms that are submitted both monthly and annually by geothermal operators. A discussion is also provided regarding the entities utilizing the information in the EIA reports, and how those entities can misinterpret the data being supplied by the operators. The intent of the paper is to inform the facility operators as the importance of the accuracy of the data that they provide, and the implications of not providing the correct information.

  16. Natural Unity and Human Nature

    E-Print Network [OSTI]

    Jr., Manuel Cabrera

    2012-01-01

    skeptic sees trouble brewing. When considering things fromeasily mask the rationalism brewing beneath the surface. Weoccurs to me might be there, brewing beneath the surface and

  17. Bi-directional power control system for voltage converter

    DOE Patents [OSTI]

    Garrigan, N.R.; King, R.D.; Schwartz, J.E.

    1999-05-11

    A control system for a voltage converter includes: a power comparator for comparing a power signal on input terminals of the converter with a commanded power signal and producing a power comparison signal; a power regulator for transforming the power comparison signal to a commanded current signal; a current comparator for comparing the commanded current signal with a measured current signal on output terminals of the converter and producing a current comparison signal; a current regulator for transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal; and a PWM for using the PWM duty cycle command signal to control electrical switches of the converter. The control system may further include: a command multiplier for converting a voltage signal across the output terminals of the converter to a gain signal having a value between zero (0) and unity (1), and a power multiplier for multiplying the commanded power signal by the gain signal to provide a limited commanded power signal, wherein power comparator compares the limited commanded power signal with the power signal on the input terminals. 10 figs.

  18. Bi-directional power control system for voltage converter

    DOE Patents [OSTI]

    Garrigan, Neil Richard (Niskayuna, NY); King, Robert Dean (Schenectady, NY); Schwartz, James Edward (Slingerlands, NY)

    1999-01-01

    A control system for a voltage converter includes: a power comparator for comparing a power signal on input terminals of the converter with a commanded power signal and producing a power comparison signal; a power regulator for transforming the power comparison signal to a commanded current signal; a current comparator for comparing the commanded current signal with a measured current signal on output terminals of the converter and producing a current comparison signal; a current regulator for transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal; and a PWM for using the PWM duty cycle command signal to control electrical switches of the converter. The control system may further include: a command multiplier for converting a voltage signal across the output terminals of the converter to a gain signal having a value between zero (0) and unity (1), and a power multiplier for multiplying the commanded power signal by the gain signal to provide a limited commanded power signal, wherein power comparator compares the limited commanded power signal with the power signal on the input terminals.

  19. Reducing Power Factor Cost | Department of Energy

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nAandSummary From: JuliaDepartment-8-2008RSSaSuperiorIfgloved hands

  20. WIMP matter power spectra and small scale power generation

    E-Print Network [OSTI]

    C. Boehm; H. Mathis; J. Devriendt; J. Silk

    2003-09-24

    Dark Matter (DM) is generally assumed to be massive, cold and collisionless from the structure formation point of view. A more correct statement however is that DM indeed experiences collisional damping, but on a scale which is supposed to be too small to be relevant for structure formation. The aim of this paper is to present a Cold (although ``collisional'') Dark Matter particle whose matter power spectrum is damped and see whether it is distinguishable from standard candidates. To achieve this purpose, we calculate the collisional damping and free-streaming scales of neutralinos and non conventional candidates (say light particles heavier than ~1 MeV but lighter than O(10) GeV). The latter can be considered as Cold Dark Matter (CDM) particles in the sense that they become non relativistic before their thermal decoupling epoch. Unlike neutralinos, however, their linear matter power spectrum can be damped on scales of ~ 10^3 Msol due to their interactions. Since these scales are of cosmological interest for structure formation, we perform a series of numerical simulations to obtain the corresponding non linear matter power spectra P(k)_{nl} at the present epoch. We show that because of small scale regeneration, they all resemble each other at low redshifts, i.e. become very similar to a typical CDM matter power spectrum on all but the smallest scales. Therefore, even if lensing measurements at redshift below unity were to yield a P(k)_{nl} consistent with CDM models, this would not constitute a sufficiently robust evidence in favour of the neutralino to rule out alternative DM candidates.

  1. Fusion Power Deployment

    SciTech Connect (OSTI)

    J.A. Schmidt; J.M. Ogden

    2002-02-06

    Fusion power plants could be part of a future portfolio of non-carbon dioxide producing energy supplies such as wind, solar, biomass, advanced fission power, and fossil energy with carbon dioxide sequestration. In this paper, we discuss key issues that could impact fusion energy deployment during the last half of this century. These include geographic issues such as resource availability, scale issues, energy storage requirements, and waste issues. The resource needs and waste production associated with fusion deployment in the U.S. should not pose serious problems. One important feature of fusion power is the fact that a fusion power plant should be locatable within most local or regional electrical distribution systems. For this reason, fusion power plants should not increase the burden of long distance power transmission to our distribution system. In contrast to fusion power, regional factors could play an important role in the deployment of renewable resources such as wind, solar and biomass or fossil energy with CO2 sequestration. We examine the role of these regional factors and their implications for fusion power deployment.

  2. Gray, W. D., Schoelles, M. J., Bringsjord, S. A., Burrows, K., & Colder, B. (2003). Sage: Five powerful ideas for studying and transforming the intellligence analyst's task environment, Human Factors and Ergonomics Society (pp. 1019-1023).

    E-Print Network [OSTI]

    Gray, Wayne

    2003-01-01

    and Ergonomics Society (pp. 1019-1023). Santa Monica, CA: Human Factors and Ergonomics Society. p. 1019 SAGE

  3. Perovskite Power

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

    Perovskite Power 1663 Los Alamos science and technology magazine Latest Issue:October 2015 past issues All Issues submit Perovskite Power A breakthrough in the production of...

  4. Factors Impacting Decommissioning Costs - 13576

    SciTech Connect (OSTI)

    Kim, Karen; McGrath, Richard [Electric Power Research Institute, 3420 Hillview Ave., Palo Alto, California (United States)] [Electric Power Research Institute, 3420 Hillview Ave., Palo Alto, California (United States)

    2013-07-01

    The Electric Power Research Institute (EPRI) studied United States experience with decommissioning cost estimates and the factors that impact the actual cost of decommissioning projects. This study gathered available estimated and actual decommissioning costs from eight nuclear power plants in the United States to understand the major components of decommissioning costs. Major costs categories for decommissioning a nuclear power plant are removal costs, radioactive waste costs, staffing costs, and other costs. The technical factors that impact the costs were analyzed based on the plants' decommissioning experiences. Detailed cost breakdowns by major projects and other cost categories from actual power plant decommissioning experiences will be presented. Such information will be useful in planning future decommissioning and designing new plants. (authors)

  5. Illinois Nuclear Profile - Clinton Power Station

    U.S. Energy Information Administration (EIA) Indexed Site

    Clinton Power Station" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License expiration date"...

  6. Massachusetts Nuclear Profile - Pilgrim Nuclear Power Station

    U.S. Energy Information Administration (EIA) Indexed Site

    Pilgrim Nuclear Power Station" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer cpacity factor (percent)","Type","Commercial operation date","License...

  7. The Impact of Wind Power Projects on Residential Property Values in the United States: A Multi-Site Hedonic Analysis

    E-Print Network [OSTI]

    Hoen, Ben

    2010-01-01

    Opinion about Large Offshore Wind Power: Underlying Factors.Delaware Opinion on Offshore Wind Power - Interim Report.

  8. Role of nuclear power in the Philippine power development program

    SciTech Connect (OSTI)

    Aleta, C.R.

    1994-12-31

    The reintroduction of nuclear power in the Philippines is favored by several factors such as: the inclusion of nuclear energy in the energy sector of the science and technology agenda for national development (STAND); the Large gap between electricity demand and available local supply for the medium-term power development plan; the relatively lower health risks in nuclear power fuel cycle systems compared to the already acceptable power systems; the lower environmental impacts of nuclear power systems compared to fossil fuelled systems and the availability of a regulatory framework and trained personnel who could form a core for implementing a nuclear power program. The electricity supply gap of 9600 MW for the period 1993-2005 could be partly supplied by nuclear power. The findings of a recent study are described, as well as the issues that have to be addressed in the reintroduction of nuclear power.

  9. Power supply

    DOE Patents [OSTI]

    Yakymyshyn, Christopher Paul (Seminole, FL); Hamilton, Pamela Jane (Seminole, FL); Brubaker, Michael Allen (Loveland, CO)

    2007-12-04

    A modular, low weight impedance dropping power supply with battery backup is disclosed that can be connected to a high voltage AC source and provide electrical power at a lower voltage. The design can be scaled over a wide range of input voltages and over a wide range of output voltages and delivered power.

  10. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: FUNDAMENTAL THEORY AND APPLICATIONS, VOL. 44, NO. 8, AUGUST 1997 667 Zero-Order Switching Networks and Their

    E-Print Network [OSTI]

    Tse, Chi K. "Michael"

    - tant design criterion for switching power converters in addition to high efficiency. Unity power factor, AUGUST 1997 667 Zero-Order Switching Networks and Their Applications to Power Factor Correction and the switching sequence. Such networks have direct practical relevance to power factor correction (PFC). Based

  11. The Impact of Wind Power Projects on Residential Property Values in the United States: A Multi-Site Hedonic Analysis

    E-Print Network [OSTI]

    Hoen, Ben

    2010-01-01

    2002) Economic Impacts of Wind Power in Kittitas County, WA.about Large Offshore Wind Power: Underlying Factors. EnergyOpinion on Offshore Wind Power - Interim Report. University

  12. RF power generation

    E-Print Network [OSTI]

    Carter, R G

    2011-01-01

    This paper reviews the main types of r.f. power amplifiers which are, or may be, used for particle accelerators. It covers solid-state devices, tetrodes, inductive output tubes, klystrons, magnetrons, and gyrotrons with power outputs greater than 10 kW c.w. or 100 kW pulsed at frequencies from 50 MHz to 30 GHz. Factors affecting the satisfactory operation of amplifiers include cooling, matching and protection circuits are discussed. The paper concludes with a summary of the state of the art for the different technologies.

  13. Concentrated Thermoelectric Power

    Broader source: Energy.gov [DOE]

    This fact sheet describes a concentrated solar hydroelectric power project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by MIT, is working to demonstrate concentrating solar thermoelectric generators with >10% solar-to-electrical energy conversion efficiency while limiting optical concentration to less than a factor of 10 and potentially less than 4. When combined with thermal storage, CSTEGs have the potential to provide electricity day and night using no moving parts at both the utility and distributed scale.

  14. Power LCAT

    SciTech Connect (OSTI)

    Drennen, Thomas

    2012-08-15

    POWER LCAT is a software tool used to compare elements of efficiency, cost, and environmental effects between different sources of energy.

  15. QM Power

    Broader source: Energy.gov [DOE]

    QM Power’s Q-Sync™ is an innovative, highly efficient and cost effective motor technology. Utilizing DoE SBIR funding, QM Power has developed advanced Q-Sync fan motor technology for 9-12 watt commercial refrigeration fan applications and is launching its first product lines targeting both new and existing commercial refrigeration equipment. For this project, QM Power will team with Oak Ridge National Labs, market leading OEMs, subject matter experts, end users, retrofit contractors and utilities to install and demonstrate approximately 10,000 high efficiency Q-Sync fan motors in over 50 grocery sites throughout the US.

  16. Power LCAT

    ScienceCinema (OSTI)

    Drennen, Thomas

    2014-06-27

    POWER LCAT is a software tool used to compare elements of efficiency, cost, and environmental effects between different sources of energy.

  17. Energy efficient control for power management circuits operating from nano-watts to watts

    E-Print Network [OSTI]

    Bandyopadhyay, Saurav

    2013-01-01

    Energy efficiency and form factor are the key driving forces in today's power electronics. All power delivery circuits, irrespective of the magnitude of power, basically consists of power trains, gate drivers and control ...

  18. Power system

    DOE Patents [OSTI]

    Hickam, Christopher Dale (Glasford, IL)

    2008-03-18

    A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

  19. Efficient Networks for Quantum Factoring

    E-Print Network [OSTI]

    David Beckman; Amalavoyal N. Chari; Srikrishna Devabhaktuni; John Preskill

    1996-02-21

    We consider how to optimize memory use and computation time in operating a quantum computer. In particular, we estimate the number of memory qubits and the number of operations required to perform factorization, using the algorithm suggested by Shor. A $K$-bit number can be factored in time of order $K^3$ using a machine capable of storing $5K+1$ qubits. Evaluation of the modular exponential function (the bottleneck of Shor's algorithm) could be achieved with about $72 K^3$ elementary quantum gates; implementation using a linear ion trap would require about $396 K^3$ laser pulses. A proof-of-principle demonstration of quantum factoring (factorization of 15) could be performed with only 6 trapped ions and 38 laser pulses. Though the ion trap may never be a useful computer, it will be a powerful device for exploring experimentally the properties of entangled quantum states.

  20. Reactive power compensator

    DOE Patents [OSTI]

    El-Sharkawi, Mohamed A. (Renton, WA); Venkata, Subrahmanyam S. (Woodinville, WA); Chen, Mingliang (Kirkland, WA); Andexler, George (Everett, WA); Huang, Tony (Seattle, WA)

    1992-01-01

    A system and method for determining and providing reactive power compensation for an inductive load. A reactive power compensator (50,50') monitors the voltage and current flowing through each of three distribution lines (52a, 52b, 52c), which are supplying three-phase power to one or more inductive loads. Using signals indicative of the current on each of these lines when the voltage waveform on the line crosses zero, the reactive power compensator determines a reactive power compensator capacitance that must be connected to the lines to maintain a desired VAR level, power factor, or line voltage. Alternatively, an operator can manually select a specific capacitance for connection to each line, or the capacitance can be selected based on a time schedule. The reactive power compensator produces control signals, which are coupled through optical fibers (102/106) to a switch driver (110, 110') to select specific compensation capacitors (112) for connections to each line. The switch driver develops triggering signals that are supplied to a plurality of series-connected solid state switches (350), which control charge current in one direction in respect to ground for each compensation capacitor. During each cycle, current flows from ground to charge the capacitors as the voltage on the line begins to go negative from its positive peak value. The triggering signals are applied to gate the solid state switches into a conducting state when the potential on the lines and on the capacitors reaches a negative peak value, thereby minimizing both the potential difference and across the charge current through the switches when they begin to conduct. Any harmonic distortion on the potential and current carried by the lines is filtered out from the current and potential signals used by the reactive power compensator so that it does not affect the determination of the required reactive compensation.

  1. Reactive Power Compensator.

    DOE Patents [OSTI]

    El-Sharkawi, M.A.; Venkata, S.S.; Chen, M.; Andexler, G.; Huang, T.

    1992-07-28

    A system and method for determining and providing reactive power compensation for an inductive load. A reactive power compensator (50,50') monitors the voltage and current flowing through each of three distribution lines (52a, 52b, 52c), which are supplying three-phase power to one or more inductive loads. Using signals indicative of the current on each of these lines when the voltage waveform on the line crosses zero, the reactive power compensator determines a reactive power compensator capacitance that must be connected to the lines to maintain a desired VAR level, power factor, or line voltage. Alternatively, an operator can manually select a specific capacitance for connection to each line, or the capacitance can be selected based on a time schedule. The reactive power compensator produces control signals, which are coupled through optical fibers (102/106) to a switch driver (110, 110') to select specific compensation capacitors (112) for connections to each line. The switch driver develops triggering signals that are supplied to a plurality of series-connected solid state switches (350), which control charge current in one direction in respect to ground for each compensation capacitor. During each cycle, current flows from ground to charge the capacitors as the voltage on the line begins to go negative from its positive peak value. The triggering signals are applied to gate the solid state switches into a conducting state when the potential on the lines and on the capacitors reaches a negative peak value, thereby minimizing both the potential difference and across the charge current through the switches when they begin to conduct. Any harmonic distortion on the potential and current carried by the lines is filtered out from the current and potential signals used by the reactive power compensator so that it does not affect the determination of the required reactive compensation. 26 figs.

  2. Nuclear Power 

    E-Print Network [OSTI]

    2010-01-01

    be inherently safe and environmentally benign. These realities of today's world are among the reasons that lead to serious interest in deploying nuclear power as a sustainable energy source. Today's nuclear reactors are safe and highly efficient energy systems...

  3. Power combiner

    DOE Patents [OSTI]

    Arnold, Mobius; Ives, Robert Lawrence

    2006-09-05

    A power combiner for the combining of symmetric and asymmetric traveling wave energy comprises a feed waveguide having an input port and a launching port, a reflector for reflecting launched wave energy, and a final waveguide for the collection and transport of launched wave energy. The power combiner has a launching port for symmetrical waves which comprises a cylindrical section coaxial to the feed waveguide, and a launching port for asymmetric waves which comprises a sawtooth rotated about a central axis.

  4. Low Power Design Low PowerLow Power

    E-Print Network [OSTI]

    Pedram, Massoud

    Low Power Design USC/LPCAD Page 1 USCUSC Low PowerLow Power CADCAD MassoudMassoud PedramPedram High-Level Design Challenges and Solutions for Low Power Systems Massoud Pedram University of Southern California Department of EE-Systems Los Angeles CA 90089-256 Email: massoud@zugros.usc.edu USCUSC Low PowerLow Power

  5. Power inverters

    DOE Patents [OSTI]

    Miller, David H. (Redondo Beach, CA); Korich, Mark D. (Chino Hills, CA); Smith, Gregory S. (Woodland Hills, CA)

    2011-11-15

    Power inverters include a frame and a power module. The frame has a sidewall including an opening and defining a fluid passageway. The power module is coupled to the frame over the opening and includes a substrate, die, and an encasement. The substrate includes a first side, a second side, a center, an outer periphery, and an outer edge, and the first side of the substrate comprises a first outer layer including a metal material. The die are positioned in the substrate center and are coupled to the substrate first side. The encasement is molded over the outer periphery on the substrate first side, the substrate second side, and the substrate outer edge and around the die. The encasement, coupled to the substrate, forms a seal with the metal material. The second side of the substrate is positioned to directly contact a fluid flowing through the fluid passageway.

  6. Radio-frequency power generation

    E-Print Network [OSTI]

    Carter, Richard G

    2013-01-01

    This paper reviews the main types of radio-frequency power amplifiers which are, or may be, used for high-power hadron accelerators. It covers tetrodes, inductive output tubes, klystrons and magnetrons with power outputs greater than 10 kW continuous wave or 100 kW pulsed at frequencies from 50 MHz to 30 GHz. Factors affecting the satisfactory operation of amplifiers include cooling, matching and protection circuits are discussed. The paper concludes with a summary of the state of the art for the different technologies.

  7. Power Recovery 

    E-Print Network [OSTI]

    Murray, F.

    1986-01-01

    , will be the use of the ASTM Theoretical Steam Rate Tables. In addition, the author's experience regarding the minimum size for power recovery units that are economic in a Culf Coast plant will be presented. INTROD\\Jr.'rION When surveying an operation...)' The pressure ~ecompression term(~2) k~l, is used in the equat10n in a manner 1 which reduces the power recovery as calculated by the first term of the equation. From a practical view a decompression ra~~y ~0.3 is a good screening point. Note...

  8. Solar Power

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effect Photovoltaics -7541 *ImpactScience(TechnicalFor Milwaukee, BySoft Solar Power

  9. Yakama Power

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLos Alamos verifies largest single| National1958,1CaseYakama Power May

  10. Fusion Power

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article)Forthcoming UpgradesArea:Benefits of FES »Power

  11. Human Factors @ UB Fall 2010 Human Factors

    E-Print Network [OSTI]

    Krovi, Venkat

    . Outsourcing aviation maintenance: Hu- man factors implications, specifically for communications. C. Drury, K. Guy, C. Wenner. International Journal of Aviation Psychology, 2010, 20, 124 ­ 143. #12;2 Human Factors

  12. Star Power

    ScienceCinema (OSTI)

    None

    2014-11-18

    The U.S. Department of Energy's Princeton Plasma Physics Laboratory has released ''Star Power,'' a new informational video that uses dramatic and beautiful images and thought-provoking interviews to highlight the importance of the Laboratory's research into magnetic fusion.

  13. Star Power

    SciTech Connect (OSTI)

    2014-10-17

    The U.S. Department of Energy's Princeton Plasma Physics Laboratory has released ''Star Power,'' a new informational video that uses dramatic and beautiful images and thought-provoking interviews to highlight the importance of the Laboratory's research into magnetic fusion.

  14. CSEM WP 104 Variation of Distribution Factors with Loading

    E-Print Network [OSTI]

    California at Berkeley. University of

    on the topology of the electric power system, the behavior of controllable transmission system elements distribution factors depend on the operating point and topology of an electric power system. However right schemes for transmis- sion rights [4, 5], capacity to flow power on a line or a group of lines

  15. Variation of distribution factors with loading Ross Baldick

    E-Print Network [OSTI]

    Baldick, Ross

    of Texas at Austin. transmission rights [5], [6], capacity to flow power on a line or a group of lines factors depend on the op- erating point and topology of an electric power system. However, it is known) is the relative change in power flow on a particular line due to a change in injection and corresponding

  16. Maryland Nuclear Profile - Calvert Cliffs Nuclear Power Plant

    U.S. Energy Information Administration (EIA) Indexed Site

    Calvert Cliffs Nuclear Power Plant" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License...

  17. New York Nuclear Profile - R E Ginna Nuclear Power Plant

    U.S. Energy Information Administration (EIA) Indexed Site

    R E Ginna Nuclear Power Plant" "Unit","Summer Capacity (MW)","Net Generation (Thousand MWh)","Summer Capacity Factor (Percent)","Type","Commercial Operation Date","License...

  18. Backup Power Cost of Ownership Analysis and Incumbent Technology...

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

    of ownership analysis identifies the factors impacting the value proposition for fuel cell backup power and presents the estimated annualized cost of ownership for fuel cell...

  19. Engine Driven Combined Heat and Power: Arrow Linen Supply, December 2008

    Broader source: Energy.gov [DOE]

    Presentation overview the arrow linen supply combined heat and power, its cost savings, success factors, and impacts

  20. Power superconducting power transmission cable

    DOE Patents [OSTI]

    Ashworth, Stephen P. (Cambridge, GB)

    2003-01-01

    The present invention is for a compact superconducting power transmission cable operating at distribution level voltages. The superconducting cable is a conductor with a number of tapes assembled into a subconductor. These conductors are then mounted co-planarly in an elongated dielectric to produce a 3-phase cable. The arrangement increases the magnetic field parallel to the tapes thereby reducing ac losses.

  1. The Transcription Factor Encyclopedia

    E-Print Network [OSTI]

    2012-01-01

    Transcription Factor Encyclopedia. Genome Biology 2012 13:Factor Encyclopedia. Gen- ome Biology 2012, 13:000. where ‘Biology 2012, 13:R24 http://genomebiology.com/2012/13/3/R24 SOFTWARE Open Access The Transcription Factor Encyclopedia

  2. Bayesian CP Factorization of Incomplete Tensors with Automatic Rank Determination

    E-Print Network [OSTI]

    Zhang, Liqing

    IEEEProof Bayesian CP Factorization of Incomplete Tensors with Automatic Rank Determination Qibin--CANDECOMP/PARAFAC (CP) tensor factorization of incomplete data is a powerful technique for tensor completion through explicitly capturing the multilinear latent factors. The existing CP algorithms require the tensor rank

  3. Functions and the Unity of Mathematics

    E-Print Network [OSTI]

    2015-11-20

    for our solar system in a ball which extends far out beyond the matter of the solar. system, and if we consider this as a space-like slice of space time, then the ...

  4. Power Right. Power Smart. Efficient Computer Power Supplies and...

    Energy Savers [EERE]

    consume? Higher efficiency power supplies reduce energy consumption, thus cutting your electricity bill. They reduce power consumption, helping your electric utility meet peak...

  5. Power Technologies Energy Data Book - Fourth Edition

    SciTech Connect (OSTI)

    Aabakken, J.

    2006-08-01

    This report, prepared by NREL's Strategic Energy Analysis Center, includes up-to-date information on power technologies, including complete technology profiles. The data book also contains charts on electricity restructuring, power technology forecasts, electricity supply, electricity capability, electricity generation, electricity demand, prices, economic indicators, environmental indicators, and conversion factors.

  6. Two-Stage Power Conversion Architecture for an LED Driver Circuit

    E-Print Network [OSTI]

    Perreault, Dave

    Two-Stage Power Conversion Architecture for an LED Driver Circuit Seungbum Lim, John Ranson, David with 0.93 power factor at 8.4 W average power. I. INTRODUCTION LED lighting promises unprecedented efficiency, and high-power-factor LED drivers [1]. A survey of commercial LED drivers illustrates this

  7. Wind Power

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking WithTelecentricNCubicthe FOIA?ResourceMeasurement Buoy AdvancesWind

  8. The power of one qumode

    E-Print Network [OSTI]

    Nana Liu; Jayne Thompson; Christian Weedbrook; Seth Lloyd; Vlatko Vedral; Mile Gu; Kavan Modi

    2015-10-16

    Although quantum computers are capable of solving problems like factoring exponentially faster than the best-known classical algorithms, determining the resources responsible for their computational power remains unclear. An important class of problems where quantum computers possess an advantage is phase estimation, which includes applications like factoring. We introduce a new computational model based on a single squeezed state resource that can perform phase estimation, which we call the power of one qumode. This model is inspired by an interesting computational model known as deterministic quantum computing with one quantum bit (DQC1). Using the power of one qumode, we identify that the amount of squeezing is sufficient to quantify the resource requirements of different computational problems based on phase estimation. In particular, it establishes a quantitative relationship between the resources required for factoring and DQC1. For example, we find the squeezing required to factor has an exponential scaling whereas no squeezing (i.e., a coherent state) is already sufficient to solve the hardest problem in DQC1.

  9. Magnets and Power Supplies

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

    Up: APS Storage Ring Parameters Previous: Longitudinal bunch profile and Magnets and Power Supplies Dipole Magnets and Power Supplies Value Dipole Number 80+1 No. of power...

  10. Interpreting Territory and Power

    E-Print Network [OSTI]

    Bevir, Mark

    2010-01-01

    Press, 1960). Bulpitt, Territory and Power, p. 57.Bulpitt, Territory and Power, p. 61-62.Bulpitt, Territory and Power, p. 63. Bulpitt, Territory and

  11. Power Simulator for Smartphones

    E-Print Network [OSTI]

    Gkolemis, Nikolaos

    2013-01-01

    Kim M. , Woo S. , “Accurate GPU Power Estimation forMobile Device Power Profiling”, IEEE ICCE (2013),http://Kumar S. , John L. , “Power Modeling of SDRAMs”, University

  12. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01

    2008, uses concentrated solar power to split water. Figurethe main reason the potential for solar power is boundless.a clean energy source, solar power is inexhaustible, fairly

  13. PowerPoint Presentation

    Office of Environmental Management (EM)

    to these monitors to handle brief power outages, but future plans include providing site emergency power to these monitors for extended power outages Equipment to be added...

  14. Wind Power Outreach Campaign

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

    Wind Power Wind Power Main Page Outreach Programs Image Gallery FAQs Links Software Hydro Power INL Home Outreach Programs A team of educators and scientists from the Idaho...

  15. ELECTROCHEMICAL POWER FOR TRANSPORTATION

    E-Print Network [OSTI]

    Cairns, Elton J.

    2012-01-01

    electric power generating plant, and the distributionrequired on the power-generating plant and not on the vehi-in either power-generating plants or combustion engines,

  16. Northwest, the Bonneville Power

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

    causing a protective shutdown that created cascading power outages across the regional power grid. Power outages like these are much more than an inconvenience to consumers....

  17. Power management system

    DOE Patents [OSTI]

    Algrain, Marcelo C. (Peoria, IL); Johnson, Kris W. (Washington, IL); Akasam, Sivaprasad (Peoria, IL); Hoff, Brian D. (East Peoria, IL)

    2007-10-02

    A method of managing power resources for an electrical system of a vehicle may include identifying enabled power sources from among a plurality of power sources in electrical communication with the electrical system and calculating a threshold power value for the enabled power sources. A total power load placed on the electrical system by one or more power consumers may be measured. If the total power load exceeds the threshold power value, then a determination may be made as to whether one or more additional power sources is available from among the plurality of power sources. At least one of the one or more additional power sources may be enabled, if available.

  18. POWER PURCHASE AGREEMENT DELMARVA POWER & LIGHT COMPANY

    E-Print Network [OSTI]

    Firestone, Jeremy

    POWER PURCHASE AGREEMENT between DELMARVA POWER & LIGHT COMPANY ("Buyer") and BLUEWATER WIND 3.5 Energy Forecasts, Scheduling and Balancing.......................................... 39 3

  19. Power oscillator

    DOE Patents [OSTI]

    Gitsevich, Aleksandr (Montgomery Village, MD)

    2001-01-01

    An oscillator includes an amplifier having an input and an output, and an impedance transformation network connected between the input of the amplifier and the output of the amplifier, wherein the impedance transformation network is configured to provide suitable positive feedback from the output of the amplifier to the input of the amplifier to initiate and sustain an oscillating condition, and wherein the impedance transformation network is configured to protect the input of the amplifier from a destructive feedback signal. One example of the oscillator is a single active element device capable of providing over 70 watts of power at over 70% efficiency. Various control circuits may be employed to match the driving frequency of the oscillator to a plurality of tuning states of the lamp.

  20. EEE598 Renewable Electric Energy Systems Spring 2011

    E-Print Network [OSTI]

    Zhang, Junshan

    in the utilization of renewable resources, especially wind and solar. EEE 598 is an advanced course on power Harmonic analysis, power quality and filter design Current injection control at unity power factor and implementation in simulation tools 2. Power converters and control for wind generators Overview of wind turbine

  1. Wireless Power Transfer

    ScienceCinema (OSTI)

    None

    2013-11-19

    Wireless Power Transfer is an innovative approach using magnetic resonance coupling of air core transformers designed for today's growing plug-in electric vehicle market. This technology can provide a convenient, safe and flexible means to charge electric vehicles under stationary and dynamic conditions. Plug-in Electric Vehicles (PEV) are burdened by the need for cable and plug charger, galvanic isolation of the on-board electronics, bulk and cost of this charger and the large energy storage system (ESS) packs needed. With a system where you have to physically plug in there are a number of occasions where the owner could very well forget to charge the vehicle. For stationary applications (like charging of a PHEV at home), ORNL's innovative wireless power transfer technology adds a convenience factor compared to actually plugging in which will mean that the vehicle will have a full charge every morning. Electric vehicle charging must be safe, compact and efficient in order to be convenient for customers. By reconfiguring the transformer and altering the resonance frequency, energy is transferred to the battery with lower energy losses and with fewer demands on the primary circuit by the rest of the transformer system. The ORNL discovery shows that sufficient power for the battery can be transferred from the primary to secondary circuits without significant energy losses if the operating frequency is set at 50% to 95% of the resonance frequency of the circuit. The electrical power is then transmitted to the chargeable battery, which is electrically coupled to the secondary circuit through the air core transformer. Some advantages include: Reduced energy losses during transfer of energy to the battery; A charge potential that is relatively unaffected by up to 25% misalignment of vehicle; and Other receiving components draw less power from the primary circuit. These advantages allow wireless power technology applications to expand at the workplace and beyond as the demand for EV rises. For vehicles that operate over a fixed route such as busses and shuttle vehicles, Wireless Power Transfer (WPT) means that a smaller battery pack can be used. In the traditional system, the battery pack is designed to accommodate the needs of the entire route or shift. With WPT the battery can be downsized because it can be charged when the vehicle stops on its route (a rental car shuttle bus, for example, can charge when it waits in the terminal and again when it waits at the rental car place. Thus the battery only needs enough charge to get to the next stop. This decrease in battery size means significant cost savings to electrify the vehicle. This technology enables efficient "opportunity charging stations" for predefined routes and planned stops reducing down time. Charging can occur in minutes. This improvement also eliminates the harmful emissions that occur in garages while buses are at idle during charging. In larger cities, dynamic charging offers an even greater impact utilizing existing infrastructure. As vehicles travel along busy freeways and interstate systems, wireless charging can occur while the vehicle is in motion. With this technology a vehicle essentially has unlimited electric range while using a relatively small battery pack. In-motion charging stations use vehicle sensors to alert the driver. Traveling at normal speeds, sensors establish in-motion charging. WPT transmit pads sequentially energize to the negotiated power level based on vehicle speed and its requested charging energy. Lower power when vehicle speed is slow and much higher power for faster moving vehicles. Vehicle to Infrastructure communications (V2I) coordinates WPT charging level according to on-board battery pack state-of-charge. V2I activates the roadway transmit pads placing them in standby mode and negotiates charging fee based on prevailing grid rate and vehicle energy demand. Dynamic charging would allow electricity to supply a very large fraction of the energy for the transportation sector and reduce greatly petroleum consump

  2. Wireless Power Transfer

    SciTech Connect (OSTI)

    2013-07-22

    Wireless Power Transfer is an innovative approach using magnetic resonance coupling of air core transformers designed for today's growing plug-in electric vehicle market. This technology can provide a convenient, safe and flexible means to charge electric vehicles under stationary and dynamic conditions. Plug-in Electric Vehicles (PEV) are burdened by the need for cable and plug charger, galvanic isolation of the on-board electronics, bulk and cost of this charger and the large energy storage system (ESS) packs needed. With a system where you have to physically plug in there are a number of occasions where the owner could very well forget to charge the vehicle. For stationary applications (like charging of a PHEV at home), ORNL's innovative wireless power transfer technology adds a convenience factor compared to actually plugging in which will mean that the vehicle will have a full charge every morning. Electric vehicle charging must be safe, compact and efficient in order to be convenient for customers. By reconfiguring the transformer and altering the resonance frequency, energy is transferred to the battery with lower energy losses and with fewer demands on the primary circuit by the rest of the transformer system. The ORNL discovery shows that sufficient power for the battery can be transferred from the primary to secondary circuits without significant energy losses if the operating frequency is set at 50% to 95% of the resonance frequency of the circuit. The electrical power is then transmitted to the chargeable battery, which is electrically coupled to the secondary circuit through the air core transformer. Some advantages include: Reduced energy losses during transfer of energy to the battery; A charge potential that is relatively unaffected by up to 25% misalignment of vehicle; and Other receiving components draw less power from the primary circuit. These advantages allow wireless power technology applications to expand at the workplace and beyond as the demand for EV rises. For vehicles that operate over a fixed route such as busses and shuttle vehicles, Wireless Power Transfer (WPT) means that a smaller battery pack can be used. In the traditional system, the battery pack is designed to accommodate the needs of the entire route or shift. With WPT the battery can be downsized because it can be charged when the vehicle stops on its route (a rental car shuttle bus, for example, can charge when it waits in the terminal and again when it waits at the rental car place. Thus the battery only needs enough charge to get to the next stop. This decrease in battery size means significant cost savings to electrify the vehicle. This technology enables efficient "opportunity charging stations" for predefined routes and planned stops reducing down time. Charging can occur in minutes. This improvement also eliminates the harmful emissions that occur in garages while buses are at idle during charging. In larger cities, dynamic charging offers an even greater impact utilizing existing infrastructure. As vehicles travel along busy freeways and interstate systems, wireless charging can occur while the vehicle is in motion. With this technology a vehicle essentially has unlimited electric range while using a relatively small battery pack. In-motion charging stations use vehicle sensors to alert the driver. Traveling at normal speeds, sensors establish in-motion charging. WPT transmit pads sequentially energize to the negotiated power level based on vehicle speed and its requested charging energy. Lower power when vehicle speed is slow and much higher power for faster moving vehicles. Vehicle to Infrastructure communications (V2I) coordinates WPT charging level according to on-board battery pack state-of-charge. V2I activates the roadway transmit pads placing them in standby mode and negotiates charging fee based on prevailing grid rate and vehicle energy demand. Dynamic charging would allow electricity to supply a very large fraction of the energy for the transportation sector and reduce greatly petroleum consump

  3. 1262 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 18, NO. 6, NOVEMBER 2003 A Constant-Power Battery Charger With Inherent

    E-Print Network [OSTI]

    Tse, Chi K. "Michael"

    Charger With Inherent Soft Switching and Power Factor Correction N. K. Poon, Member, IEEE, Bryan M. H prototype was built to demonstrate the merits of this circuit. Index Terms--Battery charger, power factor correction, switching converters, zero-voltage-switching. I. INTRODUCTION BATTERY chargers are designed

  4. Factors driving wind power development in the United States

    E-Print Network [OSTI]

    Bird, Lori A.; Parsons, Brian; Gagliano, Troy; Brown, Matthew H.; Wiser, Ryan H.; Bolinger, Mark

    2003-01-01

    presented at AWEA Windpower 2001 Conference, Washington,IN THE UNITED STATES WINDPOWER 2003 CONFERENCE WEDNESDAY,a portion to supply its Windpower green pricing program. The

  5. Enhancing the Thermoelectric Power Factor with Highly Mismatched Isoelectronic Doping

    E-Print Network [OSTI]

    Grossman, Jeffrey C.

    We investigate the effect of O impurities on the thermoelectric properties of ZnSe from a combination

  6. Factors driving wind power development in the United States

    E-Print Network [OSTI]

    Bird, Lori A.; Parsons, Brian; Gagliano, Troy; Brown, Matthew H.; Wiser, Ryan H.; Bolinger, Mark

    2003-01-01

    production incentive for small wind, a sales tax exemption,a production incentive for small wind energy facilities thatto substantial investment in small wind turbines. One of the

  7. Enhancing the Thermoelectric Power Factor by Using Invisible Dopants

    E-Print Network [OSTI]

    Zebarjadi, Mona

    Nanoparticle dopants that are invisible to conduction electrons and have sharp dips in their electron scattering rate versus electron energy close to the Fermi level. Replacement of such dopants with traditional impurities ...

  8. Power Law in Hadron Production

    E-Print Network [OSTI]

    Gazdzicki, M; Gazdzicki, Marek; Gorenstein, Mark I.

    2001-01-01

    In high energy p+p interactions the mean multiplicity of neutral mesons (from eta to Upsilon) and the transverse mass spectra of pions (m_T= 1 - 15 GeV/c^2) reveal a remarkable universal behaviour: they follow, over 10 orders of magnitude, the same power law function: C m_(T)^(-P). This scaling is rather similar to that expected in the statistical description of hadron production: the parameter P plays the role of a temperature and the normalisation constant C is analogous to the system volume. The fundamental difference is, however, in the form of the distribution function. In order to reproduce the experimental results and preserve the basic structure of the statistical approach the Boltzmann factor e^(-E^*/T) appearing in standard statistical mechanics has to be substituted by a power law factor (E^*/\\Lambda)^(-P).

  9. Human factors in nuclear technology - a history

    SciTech Connect (OSTI)

    Jones, D.B. )

    1992-01-01

    Human factors, human factors engineering (HFE), or ergonomics did not receive much formal attention in nuclear technology prior to the Three Mile Island Unit 2 (TMI-2) incident. Three principal reasons exist for this lack of concern. First, emerging technologies show little concern with how people will use a new system. Making the new technology work is considered more important than the people who will use it. Second, the culture of the users of nuclear power did not recognize a need for human factors. Traditional utilities had well established and effective engineering designs for control of electric power generation, while medicine considered the use of nuclear isotopes another useful tool, not requiring special ergonomics. Finally, the nuclear industry owed much to Admiral Rickover. He was definitely opposed.

  10. Spin-on-doping for output power improvement of silicon nanowire array based thermoelectric power generators

    SciTech Connect (OSTI)

    Xu, B., E-mail: bin.xu09@imperial.ac.uk; Fobelets, K. [Department of Electrical and Electronic Engineering, Imperial College London, Exhibition Road, SW7 2BT London (United Kingdom)

    2014-06-07

    The output power of a silicon nanowire array (NWA)-bulk thermoelectric power generator (TEG) with Cu contacts is improved by spin-on-doping (SOD). The Si NWAs used in this work are fabricated via metal assisted chemical etching (MACE) of 0.01–0.02 ? cm resistivity n- and p-type bulk, converting ~4% of the bulk thickness into NWs. The MACE process is adapted to ensure crystalline NWs. Current-voltage and Seebeck voltage-temperature measurements show that while SOD mainly influences the contact resistance in bulk, it influences both contact resistance and power factor in NWA-bulk based TEGs. According to our experiments, using Si NWAs in combination with SOD increases the output power by an order of 3 under the same heating power due to an increased power factor, decreased thermal conductivity of the NWA and reduced Si-Cu contact resistance.

  11. Update on Energy Saving Opportunities in Industrial Electrical Power Systems 

    E-Print Network [OSTI]

    Frasure, J. W.; Fredericks, C. J.

    1986-01-01

    application of capacitors to improve plant power factors will raise voltage levels and reduce'line currents, yielding a reduction in system losses. Also, by reducing var demand, capacitors can reduce or eliminate utility power-factor or demand charges..., force the industrial power user to continuously update and evaluate available means of saving electrical energy. This paper provides a survey of one company's experience with several methods of energy conservation in electrical distribution systems...

  12. Possible Evidence for Planck-Scale Resonant Particle Production during Inflation from the CMB Power Spectrum

    E-Print Network [OSTI]

    Mathews, G J; Ichiki, K; Kajino, T

    2015-01-01

    The power spectrum of the cosmic microwave background from both the Planck and WMAP data exhibits a slight dip in for multipoles in the range of l=10-30. We show that such a dip could be the result of resonant creation of a massive particle that couples to the inflaton field. For our best-fit models, epochs of resonant particle creation reenters the horizon at wave numbers of k* ~ 0.00011 (h/Mpc). The amplitude and location of these features correspond to the creation of a number of degenerate fermion species of mass ~ 15 times the planck mass during inflation with a coupling constant between the inflaton field and the created fermion species of near unity. Although the evidence is marginal, if this interpretation is correct, this could be one of the first observational hints of new physics at the Planck scale.

  13. Electric power 2007

    SciTech Connect (OSTI)

    2007-07-01

    Subjects covered include: power industry trends - near term fuel strategies - price/quality/delivery/opportunity; generating fleet optimization and plant optimization; power plant safety and security; coal power plants - upgrades and new capacity; IGCC, advanced combustion and CO{sub 2} capture technologies; gas turbine and combined cycle power plants; nuclear power; renewable power; plant operations and maintenance; power plant components - design and operation; environmental; regulatory issues, strategies and technologies; and advanced energy strategies and technologies. The presentations are in pdf format.

  14. Nuclear physics in soft-wall AdS/QCD: deuteron electromagnetic form factors

    E-Print Network [OSTI]

    Gutsche, Thomas; Schmidt, Ivan; Vega, Alfredo

    2015-01-01

    We present a calculation of the deuteron electromagnetic form factors in a soft-wall AdS/QCD approach. The power scaling of the deuteron form factors is consistent with quark counting rules.

  15. A Merged two-stage power conversion architecture with switched capacitor circuit for an LED driver module

    E-Print Network [OSTI]

    Lim, Seungbum

    2012-01-01

    In a power converter specified to convert from wide-range and high-level DC voltage or AC line voltage to low-level DC voltage, satisfying high efficiency, high power density, and high power factor is challenging because ...

  16. Model Order Selection for Boolean Matrix Factorization Pauli Miettinen

    E-Print Network [OSTI]

    Waldmann, Uwe

    Science Universiteit Antwerpen, Belgium jilles.vreeken@ua.ac.be ABSTRACT Matrix factorizations--where a given data matrix is approximated by a product of two or more factor matrices--are powerful data mining the data mining community in recent years. The technique has desirable properties, such as high

  17. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01

    are many solar photovoltaic power plants internationally andUSA, Blythe, CA Solar electric power plant, Blythe USA, SanTX Blue Wing solar electric power plant USA, Jacksonville,

  18. ELECTROCHEMICAL POWER FOR TRANSPORTATION

    E-Print Network [OSTI]

    Cairns, Elton J.

    2012-01-01

    Energy Requirements for Electric Cars and Their Impact on Power Generation andof energy resource utilization for electric power generationElectric automobile energy consumption. Effect of electric automobiles on the electric power generation

  19. Linking Humans and Systems in Nuclear Power

    SciTech Connect (OSTI)

    Jacques Hugo

    2013-02-01

    Traditional engineering methods do not make provision for the integration of human considerations, while traditional human factors methods do not scale well to the complexity of large-scale nuclear power plant projects. Although the need for up-to-date human factors engineering processes and tools is recognised widely in industry, so far no formal guidance has been developed. This article proposes such a framework.

  20. Electrolytes for power sources

    DOE Patents [OSTI]

    Doddapaneni, N.; Ingersoll, D.

    1995-01-03

    Electrolytes are disclosed for power sources, particularly alkaline and acidic power sources, comprising benzene polysulfonic acids and benzene polyphosphonic acids or salts of such acids. 7 figures.

  1. Electrolytes for power sources

    DOE Patents [OSTI]

    Doddapaneni, Narayan (Albuquerque, NM); Ingersoll, David (Albuquerque, NM)

    1995-01-01

    Electrolytes for power sources, particularly alkaline and acidic power sources, comprising benzene polysulfonic acids and benzene polyphosphonic acids or salts of such acids.

  2. Wind Power Link

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

    Wind Power Links These other web sites may provide additional information of interest: American Wind Energy Association Idaho Department of Energy Wind Power Information Utah...

  3. Bonneville Power Administration

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

    agreement (Agreement) between the BC Hydro and Power uthority (BCH) and the Bonneville Power Administration (BP A), jointly the Parties, which BA for accounting purposes is...

  4. BONNEVILLE POWER ADMINISTRATION

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

    October 2013 (Revised 060914) United States Department of Energy Bonneville Power Administration 905 N.E. 11th Avenue Portland, OR 97232 Bonneville Power Administration's 2014...

  5. Fusion Power Associates Awards

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

    Fusion Power Associates Awards Fusion Power Associates is "a non-profit, tax-exempt research and educational foundation, providing information on the status of fusion development...

  6. High Power, Linear CMOS Power Amplifier for WLAN Applications /

    E-Print Network [OSTI]

    Afsahi, Ali

    2013-01-01

    Power ampli?er (PA)2x2 Chapter 5 Power Combining5.1 Wilkinson Power Combiner . . . . . . . . . . . .

  7. Karnataka Power Corporation Limited and National Thermal Power...

    Open Energy Info (EERE)

    Karnataka Power Corporation Limited and National Thermal Power Corporation JV Jump to: navigation, search Name: Karnataka Power Corporation Limited and National Thermal Power...

  8. Assessment of Combined Heat and Power Premium Power Applications...

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

    Combined Heat and Power Premium Power Applications in California, September 2008 Assessment of Combined Heat and Power Premium Power Applications in California, September 2008 This...

  9. Flex power perspectives of indirect power system control through...

    Open Energy Info (EERE)

    Flex power perspectives of indirect power system control through dynamic power price (Smart Grid Project) Jump to: navigation, search Project Name Flex power perspectives of...

  10. Dissecting Soft Radiation with Factorization

    E-Print Network [OSTI]

    Iain W. Stewart; Frank J. Tackmann; Wouter J. Waalewijn

    2015-02-10

    An essential part of high-energy hadronic collisions is the soft hadronic activity that underlies the primary hard interaction. It includes soft radiation from the primary hard partons, secondary multiple parton interactions (MPI), and factorization-violating effects. The invariant mass spectrum of the leading jet in $Z$+jet and $H$+jet events is directly sensitive to these effects, and we use a QCD factorization theorem to predict its dependence on the jet radius $R$, jet $p_T$, jet rapidity, and partonic process for both the perturbative and nonperturbative components of primary soft radiation. We prove that the nonperturbative contributions involve only odd powers of $R$, and the linear $R$ term is universal for quark and gluon jets. The hadronization model in PYTHIA8 agrees well with these properties. The perturbative soft initial state radiation (ISR) has a contribution that depends on the jet area in the same way as the underlying event, but this degeneracy is broken by dependence on the jet $p_T$. The size of this soft ISR contribution is proportional to the color state of the initial partons, yielding the same positive contribution for $gg\\to Hg$ and $gq\\to Zq$, but a negative interference contribution for $q\\bar q\\to Z g$. Hence, measuring these dependencies allows one to separate hadronization, soft ISR, and MPI contributions in the data.

  11. Retail Demand Response in Southwest Power Pool

    E-Print Network [OSTI]

    Bharvirkar, Ranjit

    2009-01-01

    authorities, independent power producers, power marketers,Power Marketers Independent Power Producers Independent

  12. Stability Analysis of Complete Two-Stage Power-Factor-Correction Power Supplies

    E-Print Network [OSTI]

    Tse, Chi K. "Michael"

    - versity under internal allocation G-YE04. dc/dc buck converter boost PFC pre-regulator average current-stage cascade struc- ture, consisting of a PFC preregulator and a dc/dc converter. Previous studies of the dynamical be- haviour mainly focused on the boost PFC prereg- ulator, assuming that it is being terminated

  13. ORNL/CP-97155 Instantaneous Reactive Power and Power Factor of

    Office of Scientific and Technical Information (OSTI)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report: AchievementsTemperatures Year 6Report) | SciTech

  14. Power Series Introduction

    E-Print Network [OSTI]

    Vickers, James

    Power Series 16.4 Introduction In this section we consider power series. These are examples of infinite series where each term contains a variable, x, raised to a positive integer power. We use the ratio test to obtain the radius of convergence R, of the power series and state the important result

  15. Offshore Wind Power USA

    Broader source: Energy.gov [DOE]

    The Offshore Wind Power USA conference provides the latest offshore wind market updates and forecasts.

  16. The MX Factor

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

    MX Factor Test films played a strategic-planning role in the debates of the late 1970s and early 1980s about where and how to deploy the MX intercontinental ballistic missile...

  17. Alternative Geothermal Power Production Scenarios

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Sullivan, John

    The information given in this file pertains to Argonne LCAs of the plant cycle stage for a set of ten new geothermal scenario pairs, each comprised of a reference and improved case. These analyses were conducted to compare environmental performances among the scenarios and cases. The types of plants evaluated are hydrothermal binary and flash and Enhanced Geothermal Systems (EGS) binary and flash plants. Each scenario pair was developed by the LCOE group using GETEM as a way to identify plant operational and resource combinations that could reduce geothermal power plant LCOE values. Based on the specified plant and well field characteristics (plant type, capacity, capacity factor and lifetime, and well numbers and depths) for each case of each pair, Argonne generated a corresponding set of material to power ratios (MPRs) and greenhouse gas and fossil energy ratios.

  18. Alternative Geothermal Power Production Scenarios

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Sullivan, John

    2014-03-14

    The information given in this file pertains to Argonne LCAs of the plant cycle stage for a set of ten new geothermal scenario pairs, each comprised of a reference and improved case. These analyses were conducted to compare environmental performances among the scenarios and cases. The types of plants evaluated are hydrothermal binary and flash and Enhanced Geothermal Systems (EGS) binary and flash plants. Each scenario pair was developed by the LCOE group using GETEM as a way to identify plant operational and resource combinations that could reduce geothermal power plant LCOE values. Based on the specified plant and well field characteristics (plant type, capacity, capacity factor and lifetime, and well numbers and depths) for each case of each pair, Argonne generated a corresponding set of material to power ratios (MPRs) and greenhouse gas and fossil energy ratios.

  19. A Framework for Energy and Transient Power Reduction during Behavioral Synthesis

    E-Print Network [OSTI]

    Mohanty, Saraju P.

    that for two voltage levels, three operating frequencies, switching activity of 0.5 and power profiling factor) peak power differential reductions in the range of 60 - 97%. Further, the impact of switching The low power circuit design is a three dimensional problem involving area, performance and power trade

  20. Electromagetic proton form factors

    E-Print Network [OSTI]

    M Y Hussein

    2006-10-31

    The electromagnetic form factors are crucial to our understanding of the proton internal structure, and thus provide a strong constraint of the distributions of the charge and magnetization current within the proton. We adopted the quark-parton model for calculating and understanding the charge structure of the proton interms of the electromagnetic form factors. A remarkable agreement with the available experimental evidence is found.

  1. FGF growth factor analogs

    DOE Patents [OSTI]

    Zamora, Paul O. (Gaithersburg, MD); Pena, Louis A. (Poquott, NY); Lin, Xinhua (Plainview, NY); Takahashi, Kazuyuki (Germantown, MD)

    2012-07-24

    The present invention provides a fibroblast growth factor heparin-binding analog of the formula: ##STR00001## where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, X, Y and Z are as defined, pharmaceutical compositions, coating compositions and medical devices including the fibroblast growth factor heparin-binding analog of the foregoing formula, and methods and uses thereof.

  2. Hybrid Power Test Bed

    SciTech Connect (OSTI)

    NONE

    1996-06-01

    This document describes efforts by the National Renewable Energy Laboratory to simulate hybrid power systems. Hybrid power systems combine multiple power sources such as wind turbines, photovoltaic (PV) arrays, diesel generators, and battery storage systems. They typically are used in remote areas, away from major electric grids. The Hybrid Power Test Bed is designed to assist the U.S. wind industry in developing and testing hybrid power generation systems. Test bed capabilities, features, and equipment are described.

  3. Liquid Walls Innovative High Power Density Concepts

    E-Print Network [OSTI]

    California at Los Angeles, University of

    erosion as limiting factors -Results in smaller and lower cost components (chambLiquid Walls Innovative High Power Density Concepts (Based on the APEX Study) http for the Chamber Technology that can: 1. Improve the vision for an attractive fusion energy system 2. Lower

  4. Bombs unbuilt : power, ideas and institutions in international politics

    E-Print Network [OSTI]

    Walsh, James Joseph, 1959-

    2001-01-01

    Nuclear weapons are the most powerful weapons in human history, but contrary to virtually every prediction by scholars, relatively few states have acquired them. Why are there so few nuclear weapons states? What factors ...

  5. Optimal Power Allocation in Distributed Sensing (SEN 3)

    E-Print Network [OSTI]

    Gautam Thatte; Urbashi Mitra

    2006-01-01

    the star topology The received signal at the fusion centerfusion center (FC) – P i is power gain factor, Figure 1: Different generic topologies considered for distributed parameter estimation: linear, star

  6. Bicycle-powered attachments : designing for developing countries

    E-Print Network [OSTI]

    Wu, Jodie (Jodie Z.)

    2009-01-01

    There are 550 million smallholder farmers around the world who earn less than $1/day who could benefit from pedal-powered attachments. This project discusses factors to consider in designing for developing countries and ...

  7. Power the world's powers the world's economy.

    E-Print Network [OSTI]

    Power the world's economy BUSINESS #12;powers the world's economy. Put yourself in the driver. · A buyer, merchandiser, planner or manager in a retail operation. · The manager of a restaurant or food materials firm. · A marketer promoting a business, nonprofit organization or public agency. · A small

  8. Approach to nitinol power plant cost analysis

    SciTech Connect (OSTI)

    McNichols, J.L. Jr.; Cory, J.S.; Curtis, E.H.

    1982-11-01

    The objective of this paper is tof provide a method for cost evaluation of low grade thermal energy conversion by Nitinol power plants. To accomplish this objective Nitinol power plant costs are subdivided int those which can be obtained through conventional cost analysis, and those which are associated with the Nitino heat engine and are not subject to conventional analysis. Analytic expressions are provided for the Nitinol heat engine capital costs and Nitinol replacement costs in terms of Nitinol performance, heat engine configuration, plant operating factors, material costs, and the cost of capital. Nitinol working material factors are identified that require further definition before firm and reliable costs can be determined. Where data are lacking, plausible assumptions and estimates are utilized tof perform a first-cut analysis. It is found that the Nitinol heat engine capital costs per unit power generating capacity are approximately $0.15/W, and that the cost of produced energy for the Nitinol heat engine portion of the power plant is approximately 0.74 /kWh, includin operation, maintenance, Nitinol replacements and the cost of capital for the heat engine. It is concluded tha Nitinol power plants for the conversion of low grade thermal energy may have a significant economical advantage over conventionally fueled power plants.

  9. High Precision Measurement of the Proton Elastic Form Factor Ratio at Low Q2

    SciTech Connect (OSTI)

    Xiaohui Zhan

    2010-01-31

    Experiment E08-007 measured the proton elastic form factor ratio ?pGE/GM in the range of Q2 = 0.3?0.7(GeV/c)2 by recoil polarimetry. Data were taken in 2008 at the Thomas Jefferson National Accelerator Facility in Virginia, USA. A 1.2 GeV polarized electron beam was scattered off a cryogenic hydrogen target. The recoil proton was detected in the left HRS in coincidence with the elasticly scattered electrons tagged by the BigBite spectrometer. The proton polarization was measured by the focal plane polarimeter (FPP). In this low Q2 region, previous measurement from Jefferson Lab Hall A (LEDEX) along with various fits and calculations indicate substantial deviations of the ratio from unity. For this new measurement, the proposed statistical uncertainty (< 1%) was achieved. These new results are a few percent lower than expected from previous world data and fits, which indicate a smaller GEp at this region. Beyond the intrinsic interest in nucleon structure, the new results also have implications in determining the proton Zemach radius and the strangeness form factors from parity violation experiments.

  10. Multi-factor authentication

    DOE Patents [OSTI]

    Hamlet, Jason R; Pierson, Lyndon G

    2014-10-21

    Detection and deterrence of spoofing of user authentication may be achieved by including a cryptographic fingerprint unit within a hardware device for authenticating a user of the hardware device. The cryptographic fingerprint unit includes an internal physically unclonable function ("PUF") circuit disposed in or on the hardware device, which generates a PUF value. Combining logic is coupled to receive the PUF value, combines the PUF value with one or more other authentication factors to generate a multi-factor authentication value. A key generator is coupled to generate a private key and a public key based on the multi-factor authentication value while a decryptor is coupled to receive an authentication challenge posed to the hardware device and encrypted with the public key and coupled to output a response to the authentication challenge decrypted with the private key.

  11. Backup Power Cost of Ownership Analysis and Incumbent Technology Comparison

    Office of Energy Efficiency and Renewable Energy (EERE)

    This cost of ownership analysis identifies the factors impacting the value proposition for fuel cell backup power and presents the estimated annualized cost of ownership for fuel cell backup power systems compared with the incumbent technologies of battery and diesel generator systems.

  12. A NEW STATICDIFFERENTIALCMOS LOGIC WITH SUPERIOR LOW POWER PERFORMANCE

    E-Print Network [OSTI]

    Elrabaa, Muhammad E. S.

    . This property of dynamic circuits has limited its use to highly critical paths where power is sacrificed of these techniques were evaluated. They ranged from static techniques with reduced internal voltage swings to dynamic the power even further. This is due to the increased activity factor (switching probability) resulting from

  13. Power Law in Hadron Production

    E-Print Network [OSTI]

    Marek Gazdzicki; Mark I. Gorenstein

    2001-08-14

    In high energy p+p(bar) interactions the mean multiplicity and transverse mass spectra of neutral mesons from eta to Upsilon (m = 0.5 - 10 GeV/c^2) and the transverse mass spectra of pions (m_T > 1 GeV/c^2) reveal a remarkable behaviour: they follow, over more than 10 orders of magnitude, the power-law function:The parameters C and P are energy dependent, but similar for all mesons produced at the same collision energy. This scaling resembles that expected in the statistical description of hadron production: the parameter P plays the role of a temperature and the normalisation constant C is analogous to the system volume. The fundamental difference is, however, in the form of the distribution function. In order to reproduce the experimental results and preserve the basic structure of the statistical approach the Boltzmann factor e^(-E/T) appearing in standard statistical mechanics has to be substituted by a power-law factor (E/Lambda)^(-P).

  14. Accepted for Presentation at IEEE Power Engineering Society 2006 General Meeting, Montreal , Quebec, June 18-22, 2006 Abstract--This paper presents experimental results associated

    E-Print Network [OSTI]

    Operations and Planning, Power System Visualization, 3D, Human Factors I. INTRODUCTION Power system analysis is to present the results of human factor experiments comparing 2D versus 3D power system one-linAccepted for Presentation at IEEE Power Engineering Society 2006 General Meeting, Montreal , Quebec

  15. Body powered thermoelectric systems

    E-Print Network [OSTI]

    Settaluri, Krishna Tej

    2012-01-01

    Great interest exists for and progress has be made in the effective utilization of the human body as a possible power supply in hopes of powering such applications as sensors and continuously monitoring medical devices ...

  16. ELECTROCHEMICAL POWER FOR TRANSPORTATION

    E-Print Network [OSTI]

    Cairns, Elton J.

    2012-01-01

    The idea of using fuel cells as a high-efficiency source offuel cell) E V; 6094 W·h/kga Theoretical References Specific Power 27-25 W/kg Power Density 12-35 W/1 Efficiency

  17. Residential Wind Power

    E-Print Network [OSTI]

    Willis, Gary

    2011-12-16

    This research study will explore the use of residential wind power and associated engineering and environmental issues. There is various wind power generating devices available to the consumer. The study will discuss the dependencies of human...

  18. Space Solar Power Program

    SciTech Connect (OSTI)

    Arif, H.; Barbosa, H.; Bardet, C.; Baroud, M.; Behar, A.; Berrier, K.; Berthe, P.; Bertrand, R.; Bibyk, I.; Bisson, J.; Bloch, L.; Bobadilla, G.; Bourque, D.; Bush, L.; Carandang, R.; Chiku, T.; Crosby, N.; De Seixas, M.; De Vries, J.; Doll, S.; Dufour, F.; Eckart, P.; Fahey, M.; Fenot, F.; Foeckersperger, S.; Fontaine, J.E.; Fowler, R.; Frey, H.; Fujio, H.; Gasa, J.M.; Gleave, J.; Godoe, J.; Green, I.; Haeberli, R.; Hanada, T.; Ha

    1992-08-01

    Information pertaining to the Space Solar Power Program is presented on energy analysis; markets; overall development plan; organizational plan; environmental and safety issues; power systems; space transportation; space manufacturing, construction, operations; design examples; and finance.

  19. Solar Thermal Powered Evaporators

    E-Print Network [OSTI]

    Moe, Christian Robert

    2015-01-01

    Evaporator Powered By Solar Thermal Energy 10:00 AM 10:00 AMaided or powered by solar thermal energy. A section is alsoexhaustive review of solar thermal energy systems has been

  20. Power Converters for Accelerators

    E-Print Network [OSTI]

    Visintini, R

    2015-01-01

    Particle accelerators use a great variety of power converters for energizing their sub-systems; while the total number of power converters usually depends on the size of the accelerator or combination of accelerators (including the experimental setup), the characteristics of power converters depend on their loads and on the particle physics requirements: this paper aims to provide an overview of the magnet power converters in use in several facilities worldwide.

  1. Concentrating Solar Power

    SciTech Connect (OSTI)

    Not Available

    2008-09-01

    Summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its concentrating solar power subprogram.

  2. A Review of Operational Water Consumption and Withdrawal Factors for Electricity Generating Technologies

    SciTech Connect (OSTI)

    Macknick, Jordan; Newmark, Robin; Heath, Garvin; Hallett, K. C.

    2011-03-01

    This report provides estimates of operational water withdrawal and water consumption factors for electricity generating technologies in the United States. Estimates of water factors were collected from published primary literature and were not modified except for unit conversions. The presented water factors may be useful in modeling and policy analyses where reliable power plant level data are not available.

  3. Backup Power Cost of Ownership Analysis and Incumbent Technology Comparison

    SciTech Connect (OSTI)

    Kurtz, J.; Saur, G.; Sprik, S.; Ainscough, C.

    2014-09-01

    This cost of ownership analysis identifies the factors impacting the value proposition for fuel cell backup power and presents the estimated annualized cost of ownership for fuel cell backup power systems compared with the incumbent technologies of battery and diesel generator systems. The analysis compares three different backup power technologies (diesel, battery, and fuel cell) operating in similar circumstances in four run time scenarios (8, 52, 72, and 176 hours).

  4. Fast Factoring of Integers

    E-Print Network [OSTI]

    Gordon Chalmers

    2005-09-20

    An algorithm is given to factor an integer with $N$ digits in $\\ln^m N$ steps, with $m$ approximately 4 or 5. Textbook quadratic sieve methods are exponentially slower. An improvement with the aid of an a particular function would provide a further exponential speedup.

  5. Metagenomics Smart power grid

    E-Print Network [OSTI]

    Metagenomics Smart power grid The new weapons workhorse Laser on Mars LOS ALAMOS SCIENCE'll read about a unique collaboration to create a "smart" power grid to accommodate an increasing, and plans to modify an enzyme to grow renewable biofuels and mitigate carbon emissions from power plants

  6. Power Plant Cycling Costs

    SciTech Connect (OSTI)

    Kumar, N.; Besuner, P.; Lefton, S.; Agan, D.; Hilleman, D.

    2012-07-01

    This report provides a detailed review of the most up to date data available on power plant cycling costs. The primary objective of this report is to increase awareness of power plant cycling cost, the use of these costs in renewable integration studies and to stimulate debate between policymakers, system dispatchers, plant personnel and power utilities.

  7. Superconducting Power Generation

    E-Print Network [OSTI]

    Mario Rabinowitz

    2003-02-20

    The superconducting ac generator has the greatest potential for large-scale commercial application of superconductivity that can benefit the public. Electric power is a vital ingredient of modern society, and generation may be considered to be the vital ingredient of a power system. This articles gives background, and an insight into the physics and engineering of superconducting power generation.

  8. Power transaction issues in deregulated power systems 

    E-Print Network [OSTI]

    Roycourt, Henrik

    2000-01-01

    is to review the power flow problem and the newly emerging concept of Available Transfer Capability (ATC) / Total Transfer Capability (TTC). Secondly, it aims at reviewing and implementing in the Matlab environment a technique for tracing the contributions...

  9. Cooperative Control of Active Power Filters in Power Systems without Mutual Communication

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

    Tlustý, Josef; Škramlík, Ji?í; Švec, Jan; Valouch, Viktor

    2010-01-01

    The procedure for calculating controller parameters of the APFs implemented into a multibus industrial power system for harmonic voltage mitigation is presented. The node-voltage-detection control strategy is applied and the basic controller parameters are found under the condition that the demanded THD factors at the buses where the APFs are placed will be obtained. A cooperative control of several APFs without mutual communication is proposed, simulated, and experimentally verified. By tuning the controller gains without considering the power circuit parameters, all APFs used tend to share harmonic load currents approximately equally regardless of the operation modes of the nonlinear loadsmore »in different parts of the power system.« less

  10. Matrix Factorization and Matrix Concentration

    E-Print Network [OSTI]

    Mackey, Lester

    2012-01-01

    PCA 3 Mixed Membership Matrix Factorization 3.15.2 Matrix concentration3.3 Mixed Membership Matrix Factorization . . . 3.4

  11. Odd orders in Shor's factoring algorithm

    E-Print Network [OSTI]

    Thomas Lawson

    2015-01-13

    Shor's factoring algorithm (SFA) finds the prime factors of a number, $N=p_1 p_2$, exponentially faster than the best known classical algorithm. Responsible for the speed-up is a subroutine called the quantum order finding algorithm (QOFA) which calculates the order -- the smallest integer, $r$, satisfying $a^r \\mod N =1$, where $a$ is a randomly chosen integer coprime to $N$ (meaning their greatest common divisor is one, $\\gcd(a, N) =1$). Given $r$, and with probability not less than $1/2$, the factors are given by $p_1 = \\gcd (a^{\\frac{r}{2}} - 1, N)$ and $p_2 = \\gcd (a^{\\frac{r}{2}} + 1, N)$. For odd $r$ it is assumed the factors cannot be found (since $a^{\\frac{r}{2}}$ is not generally integer) and the QOFA is relaunched with a different value of $a$. But a recent paper [E. Martin-Lopez: Nat Photon {\\bf 6}, 773 (2012)] noted that the factors can sometimes be found from odd orders if the coprime is square. This raises the question of improving SFA's success probability by considering odd orders. We show that an improvement is possible, though it is small. We present two techniques for retrieving the order from apparently useless runs of the QOFA: not discarding odd orders; and looking out for new order finding relations in the case of failure. In terms of efficiency, using our techniques is equivalent to avoiding square coprimes and disregarding odd orders, which is simpler in practice. Even still, our techniques may be useful in the near future, while demonstrations are restricted to factoring small numbers. The most convincing demonstrations of the QOFA are those that return a non-power-of-two order, making odd orders that lead to the factors attractive to experimentalists.

  12. Making Africa's Power Sector Sustainable: An Analysis of Power...

    Open Energy Info (EERE)

    Making Africa's Power Sector Sustainable: An Analysis of Power Sector Reforms in Africa Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Making Africa's Power Sector...

  13. Using government purchasing power to reduce equipment standby power

    E-Print Network [OSTI]

    Harris, Jeffrey; Meier, Alan; Bartholomew, Emily; Thomas, Alison; Glickman, Joan; Ware, Michelle

    2003-01-01

    or external power supply, other specifications, and purchasethe consumer to purchase extra power strips and extensionan internal standby power function, shall purchase Although

  14. Active Power Controls from Wind Power: Bridging the Gaps | Department...

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

    This report evaluates how wind power can support power system reliability, and do so economically. The study includes a number of different power system simulations, control...

  15. Multimegawatt space power reactors

    SciTech Connect (OSTI)

    Dearien, J.A.; Whitbeck, J.F.

    1989-01-01

    In response to the need of the Strategic Defense Initiative (SDI) and long range space exploration and extra-terrestrial basing by the National Air and Space Administration (NASA), concepts for nuclear power systems in the multi-megawatt levels are being designed and evaluated. The requirements for these power systems are being driven primarily by the need to minimize weight and maximize safety and reliability. This paper will discuss the present requirements for space based advanced power systems, technological issues associated with the development of these advanced nuclear power systems, and some of the concepts proposed for generating large amounts of power in space. 31 figs.

  16. Multimode power processor

    DOE Patents [OSTI]

    O'Sullivan, G.A.; O'Sullivan, J.A.

    1999-07-27

    In one embodiment, a power processor which operates in three modes: an inverter mode wherein power is delivered from a battery to an AC power grid or load; a battery charger mode wherein the battery is charged by a generator; and a parallel mode wherein the generator supplies power to the AC power grid or load in parallel with the battery. In the parallel mode, the system adapts to arbitrary non-linear loads. The power processor may operate on a per-phase basis wherein the load may be synthetically transferred from one phase to another by way of a bumpless transfer which causes no interruption of power to the load when transferring energy sources. Voltage transients and frequency transients delivered to the load when switching between the generator and battery sources are minimized, thereby providing an uninterruptible power supply. The power processor may be used as part of a hybrid electrical power source system which may contain, in one embodiment, a photovoltaic array, diesel engine, and battery power sources. 31 figs.

  17. Multimode power processor

    DOE Patents [OSTI]

    O'Sullivan, George A. (Pottersville, NJ); O'Sullivan, Joseph A. (St. Louis, MO)

    1999-01-01

    In one embodiment, a power processor which operates in three modes: an inverter mode wherein power is delivered from a battery to an AC power grid or load; a battery charger mode wherein the battery is charged by a generator; and a parallel mode wherein the generator supplies power to the AC power grid or load in parallel with the battery. In the parallel mode, the system adapts to arbitrary non-linear loads. The power processor may operate on a per-phase basis wherein the load may be synthetically transferred from one phase to another by way of a bumpless transfer which causes no interruption of power to the load when transferring energy sources. Voltage transients and frequency transients delivered to the load when switching between the generator and battery sources are minimized, thereby providing an uninterruptible power supply. The power processor may be used as part of a hybrid electrical power source system which may contain, in one embodiment, a photovoltaic array, diesel engine, and battery power sources.

  18. Design Concepts for Power Distribution Equipment Serving Non-Linear Loads 

    E-Print Network [OSTI]

    Massey, G. W.

    1995-01-01

    foundation for building non-linear load power distribution system design guidelines for single-phase branch circuit wiring, three-phase equipment circuiting, panelboard circuit breakers, bus bars, and feeders, transformers, and power capacitors... or harmonic current overload, reduced energy consumption with lower operati g cost, and longer expected transformer life, regardle s of loading. Power Capacitors Power capacitors are installed on systems f? r voltage regulation and power factor correctio...

  19. Deuteron Form Factor

    SciTech Connect (OSTI)

    Farrar, G.R.; Huleihel, K.; Zhang, H. (Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08855 (United States))

    1995-01-30

    We obtain the perturbative QCD (PQCD) prediction for the leading twist deuteron form factor, treated as a pair of nucleons in nonrelativistic bound state. It is [lt]10[sup [minus]3] times experiment at [ital Q][sup 2]=4 GeV[sup 2], suggesting that PQCD is not relevant to the deuteron form factor at present values of [ital Q][sup 2], or that non-nucleon (e.g., hidden color'') degrees of freedom must be included for a correct description of the deuteron. The tree-level amplitude [similar to][ital eg][sup 10] and is the sum of several 10[sup 6] Feynman diagrams, making it an interesting case study in the behavior of perturbation theory.

  20. EPA Green Power Leadership Awards

    Broader source: Energy.gov [DOE]

    The U.S. Environmental Protection Agency (EPA) Green Power Leadership Awards recognize exceptional achievement among EPA Green Power Partners and among green power suppliers.

  1. Voluntary Green Power Market Forecast through 2015

    SciTech Connect (OSTI)

    Bird, L.; Holt, E.; Sumner, J.; Kreycik, C.

    2010-05-01

    Various factors influence the development of the voluntary 'green' power market--the market in which consumers purchase or produce power from non-polluting, renewable energy sources. These factors include climate policies, renewable portfolio standards (RPS), renewable energy prices, consumers' interest in purchasing green power, and utilities' interest in promoting existing programs and in offering new green options. This report presents estimates of voluntary market demand for green power through 2015 that were made using historical data and three scenarios: low-growth, high-growth, and negative-policy impacts. The resulting forecast projects the total voluntary demand for renewable energy in 2015 to range from 63 million MWh annually in the low case scenario to 157 million MWh annually in the high case scenario, representing an approximately 2.5-fold difference. The negative-policy impacts scenario reflects a market size of 24 million MWh. Several key uncertainties affect the results of this forecast, including uncertainties related to growth assumptions, the impacts that policy may have on the market, the price and competitiveness of renewable generation, and the level of interest that utilities have in offering and promoting green power products.

  2. Journal Information Journal Impact Factor

    E-Print Network [OSTI]

    Krejcí, Pavel

    Journal Information Journal Impact Factor 5-Year Journal Impact Factor Journal Self Cites Journal Immediacy Index Journal Cited Half-Life 2014 JCR Science Edition Journal: CZECHOSLOVAK MATHEMATICAL JOURNAL Mark Journal Title ISSN Total Cites Impact Factor 5-Year Impact Factor Immediacy Index Citable Items

  3. Journal Information Journal Impact Factor

    E-Print Network [OSTI]

    Krejcí, Pavel

    Journal Information Journal Impact Factor 5-Year Journal Impact Factor Journal Self Cites Journal Immediacy Index Journal Cited Half-Life 2012 JCR Science Edition Journal: CZECHOSLOVAK MATHEMATICAL JOURNAL Mark Journal Title ISSN Total Cites Impact Factor 5-Year Impact Factor Immediacy Index Citable Items

  4. Hybrid Wind Power Balance Control Strategy using Thermal Power, Hydro Power and Flow Batteries

    E-Print Network [OSTI]

    MacDonald, Mark

    Hybrid Wind Power Balance Control Strategy using Thermal Power, Hydro Power and Flow Batteries the con- trolled use of hybrid flow battery, thermal and hydro power plant system, to support wind power on range of thermal and hydro power plant reaction times. This work suggests that power and energy

  5. Is radio jet power linearly proportional to the product of central black hole mass and Eddington ratio in AGN?

    E-Print Network [OSTI]

    Liu, Xiang

    2014-01-01

    A model for the relation between radio jet power and the product of central black hole (BH) mass and Eddington ratio of AGN is proposed, and the model is examined with data from the literature. We find that radio jet power positively correlates but not linearly with the product of BH mass ($m$ in solar mass) and Eddington ratio ($\\lambda$), and the power law indices ($\\mu$) are significantly less than unity for relatively low accretion ($\\lambda<0.1$) AGN, $P_{j}\\propto (\\lambda m)^{\\mu}$, in the radio galaxies and the Seyfert galaxies. This leads to a negative correlation between radio loudness and $\\lambda m$ for the low luminosity AGN, i.e. $R\\propto (\\lambda m)^{\\rho}$ with $\\rho=(7/6)\\mu-1<0$, which may be attributed to a contribution of BH spin to total jet power assuming that the spin induced jet is gradually suppressed as the accretion rate increases. Whereas, for the high-z quasars which often show the slope $\\mu\\geq1$, a positive correlation between the radio loudness and disc luminosity is pr...

  6. Primus Power's Flow Battery Powered by $11 Million in Private...

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

    Primus Power's Flow Battery Powered by 11 Million in Private Investment Primus Power's Flow Battery Powered by 11 Million in Private Investment June 14, 2011 - 10:00am Addthis...

  7. Transverse Momentum Distribution and Nuclear Modification Factor of Charged Particles in p-Pb Collisions at $\\sqrt{s_{NN}}$ = 5.02 TeV

    E-Print Network [OSTI]

    Abelev, Betty; Adamova, Dagmar; Adare, Andrew Marshall; Aggarwal, Madan; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agocs, Andras Gabor; Agostinelli, Andrea; Ahammed, Zubayer; Ahmad, Nazeer; Ahmad, Arshad; Ahn, Sang Un; Ahn, Sul-Ah; Ajaz, Muhammad; Akindinov, Alexander; Aleksandrov, Dmitry; Alessandro, Bruno; Alfaro Molina, Jose Ruben; Alici, Andrea; Alkin, Anton; Almaraz Avina, Erick Jonathan; Alme, Johan; Alt, Torsten; Altini, Valerio; Altinpinar, Sedat; Altsybeev, Igor; Andrei, Cristian; Andronic, Anton; Anguelov, Venelin; Anielski, Jonas; Anson, Christopher Daniel; Anticic, Tome; Antinori, Federico; Antonioli, Pietro; Aphecetche, Laurent Bernard; Appelshauser, Harald; Arbor, Nicolas; Arcelli, Silvia; Arend, Andreas; Armesto, Nestor; Arnaldi, Roberta; Aronsson, Tomas Robert; Arsene, Ionut Cristian; Arslandok, Mesut; Asryan, Andzhey; Augustinus, Andre; Averbeck, Ralf Peter; Awes, Terry; Aysto, Juha Heikki; Azmi, Mohd Danish; Bach, Matthias Jakob; Badala, Angela; Baek, Yong Wook; Bailhache, Raphaelle Marie; Bala, Renu; Baldini Ferroli, Rinaldo; Baldisseri, Alberto; Baltasar Dos Santos Pedrosa, Fernando; Ban, Jaroslav; Baral, Rama Chandra; Barbera, Roberto; Barile, Francesco; Barnafoldi, Gergely Gabor; Barnby, Lee Stuart; Barret, Valerie; Bartke, Jerzy Gustaw; Basile, Maurizio; Bastid, Nicole; Basu, Sumit; Bathen, Bastian; Batigne, Guillaume; Batyunya, Boris; Baumann, Christoph Heinrich; Bearden, Ian Gardner; Beck, Hans; Behera, Nirbhay Kumar; Belikov, Iouri; Bellini, Francesca; Bellwied, Rene; Belmont-Moreno, Ernesto; Bencedi, Gyula; Beole, Stefania; Berceanu, Ionela; Bercuci, Alexandru; Berdnikov, Yaroslav; Berenyi, Daniel; Bergognon, Anais Annick Erica; Berzano, Dario; Betev, Latchezar; Bhasin, Anju; Bhati, Ashok Kumar; Bhom, Jihyun; Bianchi, Livio; Bianchi, Nicola; Bielcik, Jaroslav; Bielcikova, Jana; Bilandzic, Ante; Bjelogrlic, Sandro; Blanco, Francesco; Blanco, F; Blau, Dmitry; Blume, Christoph; Boccioli, Marco; Boettger, Stefan; Bogdanov, Alexey; Boggild, Hans; Bogolyubsky, Mikhail; Boldizsar, Laszlo; Bombara, Marek; Book, Julian; Borel, Herve; Borissov, Alexander; Bossu, Francesco; Botje, Michiel; Botta, Elena; Braidot, Ermes; Braun-Munzinger, Peter; Bregant, Marco; Breitner, Timo Gunther; Browning, Tyler Allen; Broz, Michal; Brun, Rene; Bruna, Elena; Bruno, Giuseppe Eugenio; Budnikov, Dmitry; Buesching, Henner; Bufalino, Stefania; Busch, Oliver; Buthelezi, Edith Zinhle; Caballero Orduna, Diego; Caffarri, Davide; Cai, Xu; Caines, Helen Louise; Calvo Villar, Ernesto; Camerini, Paolo; Canoa Roman, Veronica; Cara Romeo, Giovanni; Carena, Wisla; Carena, Francesco; Carlin Filho, Nelson; Carminati, Federico; Casanova Diaz, Amaya Ofelia; Castillo Castellanos, Javier Ernesto; Castillo Hernandez, Juan Francisco; Casula, Ester Anna Rita; Catanescu, Vasile; Cavicchioli, Costanza; Ceballos Sanchez, Cesar; Cepila, Jan; Cerello, Piergiorgio; Chang, Beomsu; Chapeland, Sylvain; Charvet, Jean-Luc Fernand; Chattopadhyay, Subhasis; Chattopadhyay, Sukalyan; Chawla, Isha; Cherney, Michael Gerard; Cheshkov, Cvetan; Cheynis, Brigitte; Chibante Barroso, Vasco Miguel; Chinellato, David; Chochula, Peter; Chojnacki, Marek; Choudhury, Subikash; Christakoglou, Panagiotis; Christensen, Christian Holm; Christiansen, Peter; Chujo, Tatsuya; Chung, Suh-Urk; Cicalo, Corrado; Cifarelli, Luisa; Cindolo, Federico; Cleymans, Jean Willy Andre; Coccetti, Fabrizio; Colamaria, Fabio; Colella, Domenico; Collu, Alberto; Conesa Balbastre, Gustavo; Conesa del Valle, Zaida; Connors, Megan Elizabeth; Contin, Giacomo; Contreras, Jesus Guillermo; Cormier, Thomas Michael; Corrales Morales, Yasser; Cortese, Pietro; Cortes Maldonado, Ismael; Cosentino, Mauro Rogerio; Costa, Filippo; Cotallo, Manuel Enrique; Crescio, Elisabetta; Crochet, Philippe; Cruz Alaniz, Emilia; Cuautle, Eleazar; Cunqueiro, Leticia; Dainese, Andrea; Dalsgaard, Hans Hjersing; Danu, Andrea; Das, Kushal; Das, Indranil; Das, Supriya; Das, Debasish; Dash, Sadhana; Dash, Ajay Kumar; De, Sudipan; de Barros, Gabriel; De Caro, Annalisa; de Cataldo, Giacinto; de Cuveland, Jan; De Falco, Alessandro; De Gruttola, Daniele; Delagrange, Hugues; Deloff, Andrzej; De Marco, Nora; Denes, Ervin; De Pasquale, Salvatore; Deppman, Airton; D'Erasmo, Ginevra; de Rooij, Raoul Stefan; Diaz Corchero, Miguel Angel; Di Bari, Domenico; Dietel, Thomas; Di Giglio, Carmelo; Di Liberto, Sergio; Di Mauro, Antonio; Di Nezza, Pasquale; Divia, Roberto; Djuvsland, Oeystein; Dobrin, Alexandru Florin; Dobrowolski, Tadeusz Antoni; Donigus, Benjamin; Dordic, Olja; Driga, Olga

    2013-01-01

    The transverse momentum ($p_T$) distribution of primary charged particles is measured in non single-diffractive p-Pb collisions at $\\sqrt{s_{NN}}$ = 5.02 TeV with the ALICE detector at the LHC. The $p_T$ spectra measured near central rapidity in the range 0.5 < $p_T$ < 20 GeV/c exhibit a weak pseudorapidity dependence. The nuclear modification factor $R_{pPb}$ is consistent with unity for $p_T$ above 2 GeV/c. This measurement indicates that the strong suppression of hadron production at high $p_T$ observed in Pb-Pb collisions at the LHC is not due to an initial-state effect. The measurement is compared to theoretical calculations.

  8. Resummed QCD Power Corrections to Nuclear Shadowing

    E-Print Network [OSTI]

    Qiu, J; Qiu, Jianwei; Vitev, Ivan

    2004-01-01

    We calculate and resum a perturbative expansion of nuclear enhanced power corrections to the structure functions measured in deeply inelastic scattering of leptons on a nuclear target. Our results for the Bjorken $x$-, $Q^2$- and $A$-dependence of nuclear shadowing in $F_2^A(x,Q^2)$ and the nuclear modifications to $F_L^A(x,Q^2)$, obtained in terms of the QCD factorization approach, are consistent with the existing data. We demonstrate that the low-$Q^2$ behavior of these data and the measured large longitudinal structure function point to a critical role for the power corrections when compared to other theoretical approaches.

  9. Resummed QCD Power Corrections to Nuclear Shadowing

    E-Print Network [OSTI]

    Jianwei Qiu; Ivan Vitev

    2005-01-10

    We calculate and resum a perturbative expansion of nuclear enhanced power corrections to the structure functions measured in deeply inelastic scattering of leptons on a nuclear target. Our results for the Bjorken $x$-, $Q^2$- and $A$-dependence of nuclear shadowing in $F_2^A(x,Q^2)$ and the nuclear modifications to $F_L^A(x,Q^2)$, obtained in terms of the QCD factorization approach, are consistent with the existing data. We demonstrate that the low-$Q^2$ behavior of these data and the measured large longitudinal structure function point to a critical role for the power corrections when compared to other theoretical approaches.

  10. The MX Factor

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With U.S.Week Day Year(activeInforum LIFTMEMS Technology Revolution

  11. Sandia Energy - Conventional Water Power: Technology Development

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

    Technology Development Home Stationary Power Energy Conversion Efficiency Water Power Conventional Water Power: Technology Development Conventional Water Power: Technology...

  12. PASSIVE CONTROL OF FLUID POWERED HUMAN POWER AMPLIFIERS

    E-Print Network [OSTI]

    Li, Perry Y.

    PASSIVE CONTROL OF FLUID POWERED HUMAN POWER AMPLIFIERS Perry Y. Li and Venkat Durbha Center is proposed for the control of fluid powered human power amplifiers. Human power amplifiers are mechanical human power amplifier interacts with the human opeartor and other environments passively

  13. Power equipment applications

    SciTech Connect (OSTI)

    Seeley, R.S. (Consultant, Bridgewater, NJ (United States))

    1993-11-01

    Many considerations are taken into account in selecting equipment for power projects. The project often becomes a proving ground, benefiting equipment suppliers and developers. In designing and building power generation projects, developers and engineering and construction firms must go through the process of choosing the right equipment for the job. In doing so, a number of considerations regarding the benefits of selection and ease of installation must be taken into account. Understanding the selection process demonstrates how the independent power generation industry becomes a proving ground for different applications of power equipment. In turn, this adds more innovation and versatility to the entire power generation industry. It also provides lenders with examples of proven equipment that will more readily lead to successful financing in the future. Several developers and equipment vendors recently talked about how and why the choices were made for equipment like gas turbines, fluidized bed boilers, water treatment, power cooling equipment, and instruments and controls. 3 figs.

  14. Power Right. Power Smart. Efficient Computer Power Supplies and Monitors. |

    Energy Savers [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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested PartiesBuilding energyDepartment ofof Energy ElectricPower North

  15. DC Power Distribution Systems 

    E-Print Network [OSTI]

    Savage, P.

    2012-01-01

    - A FLEXIBLE ALTERNATIVE ..OR ELECTRICAL POWER SUPPLY S. D. REYNOLDS Manager of Industrial Marketing & Services Tennessee Valley Authority Chattanooga, Tennessee ABSTRACT In an increasingly competitive operating environment, utilities must... place greater emphasis on developing programs that benefit the customer while at the same time benefiting the utility. Economy Surplus Power (ESP) is such a program. ESP offers industrial customers attractively priced power supply arrangements based...

  16. Electric power annual 1993

    SciTech Connect (OSTI)

    Not Available

    1994-12-08

    This report presents a summary of electric power industry statistics at national, regional, and state levels: generating capability and additions, net generation, fossil-fuel statistics, retail sales and revenue, finanical statistics, environmental statistics, power transactions, demand side management, nonutility power producers. Purpose is to provide industry decisionmakers, government policymakers, analysts, and the public with historical data that may be used in understanding US electricity markets.

  17. Interleaved power converter

    DOE Patents [OSTI]

    Zhu, Lizhi (Canton, MI)

    2007-11-13

    A power converter architecture interleaves full bridge converters to alleviate thermal management problems in high current applications, and may, for example, double the output power capability while reducing parts count and costs. For example, one phase of a three phase inverter is shared between two transformers, which provide power to a rectifier such as a current doubler rectifier to provide two full bridge DC/DC converters with three rather than four high voltage inverter legs.

  18. Twisted mass QCD for the pion electromagnetic form factor

    E-Print Network [OSTI]

    Abdou M. Abdel-Rehim; Randy Lewis

    2004-10-27

    The pion form factor is computed using quenched twisted mass QCD and the GMRES-DR matrix inverter. The momentum averaging procedure of Frezzotti and Rossi is used to remove leading lattice spacing artifacts, and numerical results for the form factor show the expected improvement with respect to the standard Wilson action. Although some matrix inverters are known to fail when applied to twisted mass QCD, GMRES-DR is found to be a viable and powerful option. Results obtained for the pion form factor are consistent with the published results from other O(a) improved actions and are also consistent with the available experimental data.

  19. Solar Thermal Powered Evaporators

    E-Print Network [OSTI]

    Moe, Christian Robert

    2015-01-01

    and thermal energy storage in solar thermal applications,"aided or powered by solar thermal energy. A section is alsoexhaustive review of solar thermal energy systems has been

  20. Solar Thermal Powered Evaporators

    E-Print Network [OSTI]

    Moe, Christian Robert

    2015-01-01

    of solar collectors and thermal energy storage in solaraided or powered by solar thermal energy. A section is alsobesides MVC require thermal energy as their primary energy

  1. Electric Power Monthly

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Electric Power Monthly Data for June 2015 | Release Date: August 26, 2015 | Next Release: September 24, 2015 | full report | Re-release date: August 28, 2015 | Revision Previous...

  2. Solar power tower

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    The solar power tower section of the Renewable Energy Technology Characterizations describes the technical and economic status of this emerging renewable energy option for electricity supply.

  3. Wind Power Forecasting Data

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

    Operations Call 2012 Retrospective Reports 2012 Retrospective Reports 2011 Smart Grid Wind Integration Wind Integration Initiatives Wind Power Forecasting Wind Projects Email...

  4. Sandia Energy - Water Power

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

    News & Events, Partnership, Renewable Energy, Systems Analysis, Systems Engineering, Water Power WEC-Sim Code Development Meeting at the National Renewable Energy Laboratory...

  5. Green Power Offer (Maine)

    Broader source: Energy.gov [DOE]

    This chapter establishes requirements, standards and procedures and a competitive bidding process to implement the green power offer program. The program is designed to make renewable energy...

  6. PowerPoint Presentation

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

    PARAGON) * Performed comparisons between results using eigenvalue difference and pin power RMS difference Contributors Andrew Godfrey Fausto Franceschini Scott Palmtag Julie...

  7. Solar Thermal Powered Evaporators

    E-Print Network [OSTI]

    Moe, Christian Robert

    2015-01-01

    R. P. Allison, "High Water Recovery with Electrodialysis12] GE Power & Water, "Electrodialysis Reversal (EDR)," 02ARABIA," in The Value of Water in the 21st Century, San

  8. Power Systems Past Projects

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

    loop and its six associated substations. An upgrade of the INL loop, designed by Power Systems personnel, was completed in 1997. This project consists of transmission line...

  9. PowerPoint Presentation

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

    The two options considered in the early design in Phase II were similar in their heat transfer and power generation components, but different in their kinematic lower...

  10. Alabama Power- UESC Activities

    Broader source: Energy.gov [DOE]

    Presentation—given at the Fall 2012 Federal Utility Partnership Working Group (FUPWG) meeting—discusses Alabama Power and its utility energy service contract (UESC) projects and activities.

  11. CSTI high capacity power

    SciTech Connect (OSTI)

    Winter, J.M.

    1994-09-01

    The SP-100 program was established in 1983 by DOD, DOE, and NASA as a joint program to develop the technology necessary for space nuclear power systems for military and civil application. During FY86 and 87, the NASA SP-100 Advanced Technology Program was devised to maintain the momentum of promising technology advancement efforts started during Phase I of SP-100 and to strengthen, in key areas, the chances for successful development and growth capability of space nuclear reactor power systems for future space applications. In FY88, the Advanced Technology Program was incorporated into NASA`s new Civil Space Technology Initiative (CSTI). The CSTI Program was established to provide the foundation for technology development in automation and robotics, information, propulsion, and power. The CSTI High Capacity Power Program builds on the technology efforts of the SP-100 program, incorporates the previous NASA SP-100 Advanced Technology project, and provides a bridge to NASA Project Pathfinder. The elements of CSTI High Capacity Power development include Conversion Systems, Thermal Management, Power Management, System Diagnostics, and Environmental Interactions. Technology advancement in all areas, including materials, is required to assure the high reliability and 7 to 10 year lifetime demanded for future space nuclear power systems. The overall program will develop and demonstrate the technology base required to provide a wide range of modular power systems as well as allowing mission independence from solar and orbital attitude requirements. Several recent advancements in CSTI High Capacity power development will be discussed.

  12. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01

    done using photovoltaic systems or by a photoelectrochemicalprocess. Of course, photovoltaic systems convert sunlightwill be powered by the photovoltaic system. Also, a typical

  13. Concentrated Solar Thermoelectric Power

    Broader source: Energy.gov [DOE]

    This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, held April 23–25, 2013 near Phoenix, Arizona.

  14. Concentrating Solar Power

    SciTech Connect (OSTI)

    Solar Energy Technologies Program

    2010-09-28

    The fact sheet summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its concentrating solar power subprogram.

  15. Southwestern Power Administration

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

    and terms and conditions and anyall notifications to listed customers of sale of Hydro Power Peaking, Peaking Energy and Supplemental Peaking Energy that have been increased,...

  16. Municipal Electric Power (Minnesota)

    Broader source: Energy.gov [DOE]

    This section describes energy procurement for local utilities operating in Minnesota and provides a means for Minnesota cities to construct and operate hydroelectric power plants. The statute gives...

  17. PowerPoint Presentation

    Office of Environmental Management (EM)

    the public's investment in wind technologies to improve the performance and lower the cost of wind power. TARGETS: * Reduce vehicle petroleum use by 1 billion gallonsyear by...

  18. Electric power demand limit for variable speed heat pumps and integrated water heating heat pumps

    SciTech Connect (OSTI)

    Dudley, K.F.

    1992-03-17

    This patent describes a method of operating an integrated heat pump and hot water system that is capable of providing heating or cooling to an environmental comfort zone. The heat pump and hot water system including a variable speed compressor whose operating speed is substantially linearly related to the difference between outdoor air temperature and indoor air temperature in the comfort zone, and also including means to receive a utility peak demand limit signal to initiate automatic power limiting to reduce the power demand imposed by the heat pump and hot water system, the method comprising sensing the outdoor temperature T{sub OD}; sensing the indoor temperature T{sub ID} in the comfort zone; sensing the speed S{sub 1} of the variable speed compressor; and in response to receiving the utility peak demand limit signal DLS calculating a reference speed S{sub R} for the compressor as a function of the speed S{sub 1}, the outdoor temperature T{sub OD}, the indoor temperature T{sub ID}, and predetermined values that correspond to a reference indoor temperature T{sub ID} and a zero-load temperature difference {Delta}T{sub Z} that corresponds to the difference between the outdoor and indoor temperatures that result in a zero load requirement on the compressor; and during occurrence of the signal DLS operating the compressor at a reduced operating speed limited to a predetermined fraction, less than unity, times the reference speed S{sub R}.

  19. Plant Design and Cost Assessment of Forced Circulation Lead-Bismuth Cooled Reactor with Conventional Power Conversion Cycles

    E-Print Network [OSTI]

    Dostal, Vaclav

    Cost of electricity is the key factor that determines competitiveness of a power plant. Thus the proper selection, design and optimization of the electric power generating cycle is of main importance. This report makes an ...

  20. FUTURE POWER GRID INITIATIVE Future Power Grid

    E-Print Network [OSTI]

    of all 16 machines damped quickly ­ improved frequency performance » AGC ensures tie line power flows on the Electricity Infrastructure Operations Center (EIOC), the Pacific Northwest National Laboratory's (PNNL) national electric grid research facility, the FPGI will advance the science and develop the technologies

  1. Assessment of a satellite power system and six alternative technologies

    SciTech Connect (OSTI)

    Wolsko, T.; Whitfield, R.; Samsa, M.; Habegger, L.S.; Levine, E.; Tanzman, E.

    1981-04-01

    The satellite power system is assessed in comparison to six alternative technologies. The alternatives are: central-station terrestrial photovoltaic systems, conventional coal-fired power plants, coal-gasification/combined-cycle power plants, light water reactor power plants, liquid-metal fast-breeder reactors, and fusion. The comparison is made regarding issues of cost and performance, health and safety, environmental effects, resources, socio-economic factors, and insitutional issues. The criteria for selecting the issues and the alternative technologies are given, and the methodology of the comparison is discussed. Brief descriptions of each of the technologies considered are included. (LEW)

  2. Tests for Overidentifying Restrictions in Factor-Augmented VAR Models

    E-Print Network [OSTI]

    Alexandrova, Ivana

    Tests for Overidentifying Restrictions in Factor-Augmented VAR Models Xu Han Job Market Paper transform the infinite-dimensional problem into a finite-dimensional one by combining the individual has good finite-sample size and power. We imple- ment our tests to an updated version of Stock

  3. Quantification of Variability and Uncertainty in Hourly NOx Emissions from Coal-Fired Power Plants

    E-Print Network [OSTI]

    Frey, H. Christopher

    1 Quantification of Variability and Uncertainty in Hourly NOx Emissions from Coal-Fired Power to quantify variability and uncertainty for NOx emissions from coal-fired power plants. Data for hourly NOx Uncertainty, Variability, Emission Factors, Coal-Fired Power Plants, NOx emissions, Regression Models

  4. Design Optimization of Power Electronics Circuits using Genetic Algorithms A Boost PFC Converter Example

    E-Print Network [OSTI]

    Lindner, Douglas K.

    Design Optimization of Power Electronics Circuits using Genetic Algorithms ­ A Boost PFC Converter with a developed software tool for designing a low-cost boost power factor correction (PFC) front-end converter presents an approach to discrete design optimization of a complete power electronics converter

  5. A Framework to Determine the Probability Density Function for the Output Power of Wind Farms

    E-Print Network [OSTI]

    Dominguez-Garcia, Alejandro

    A Framework to Determine the Probability Density Function for the Output Power of Wind Farms Sairaj to the power output of a wind farm while factoring in the availability of the wind turbines in the farm availability model for the wind turbines, we propose a method to determine the wind-farm power output pdf

  6. Importance of Measurement: The Impact of Power Quality in Energy Efficiency 

    E-Print Network [OSTI]

    Qazi, T.; Roy, S.

    2010-01-01

    eyes and ears. The principle is you cannot control what you cannot measure. Looking closer at the power side, the inefficiencies caused by power quality issues such as power factor and harmonics have often been easily overlooked due to the traditional...

  7. Narrowing of high power diode laser arrays using reflection feedback from an etalon

    E-Print Network [OSTI]

    Romalis, Mike

    Narrowing of high power diode laser arrays using reflection feedback from an etalon M. V. Romalisa for publication 27 June 2000 The spectrum of a high power multielement laser array is narrowed using reflection of the laser array is reduced by a factor of 2 with only 6% power loss. This reduction in FWHM is useful

  8. PowerPoint Presentation

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

    Duration - Hardening initiatives. Factors - Population - Critical infrastructure - Outage duration 14 Storm Hardening and Resiliency Risk Model Model's goal - To gauge in...

  9. Metagenomics Smart power grid

    E-Print Network [OSTI]

    Metagenomics Smart power grid The new weapons workhorse Laser on Mars LOS ALAMOS SCIENCE'll read about a unique collaboration to create a "smart" power grid to accommodate an increasing, TECHNOLOGY, AND ENGINEERING 2 8 14 Dynamic Vision DARHT FULFILLS ITS DESTINY Solar Smart Grid in the Atomic

  10. Wind Power Software

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

    Wind Analysis ms - 3.0MB Excel Excel Wind Analysis Presentation - 8.2MB PowerPoint Excel Wind Analysis With Power Curves Included - 3.7MB Excel WindR.exe - 44kB Weibull Excel Wind...

  11. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01

    Solar Energy Center USA, Blythe, CA Solar electric power plant,Solar Wind Total Northwest Imports Southwest Imports Total Energy System Table 1.18: Largest PV Power PlantsPlants……………………………………………………32 Table 1.19: Solar Desalination Systems…………………………………………………34 Table 1.20: Energy

  12. Bulk Power Transmission Study 

    E-Print Network [OSTI]

    John, T.

    1988-01-01

    are relatively small and cannot afford the cost of a high voltage interconnect, and yet their characteristics match a baseload need. The ability to wheel power to a utility that needs base load power from a distribution level interconnection is essential...

  13. Definition of Power Converters

    E-Print Network [OSTI]

    Bordry, F

    2015-01-01

    The paper is intended to introduce power conversion principles and to define common terms in the domain. The concept s of sources and switches are defined and classified. From the basic laws of source interconnections, a generic method of power converter synthesis is presented. Some examples illustrate this systematic method. Finally, the commutation cell and soft commuta tion are introduced and discussedd.

  14. NUCLEAR POWER in CALIFORNIA

    E-Print Network [OSTI]

    NUCLEAR POWER in CALIFORNIA: 2007 STATUS REPORT CALIFORNIA ENERGY COMMISSION October 2007 CEC-100 public workshops on nuclear power. The Integrated Energy Policy Report Committee, led by Commissioners, California Contract No. 700-05-002 Prepared For: California Energy Commission Barbara Byron, Senior Nuclear

  15. The Icelandic Power Situation

    E-Print Network [OSTI]

    Karlsson, Brynjar

    #12;The Icelandic Power Situation #12;Iceland generates the most electricity in Europe per capita plants and customers 52 MWh per capita #12;Electrical usage in Iceland Low cost reliable and renewable energy attracts power intensive industry to Iceland Households use only 5% 90% of district heating

  16. Electrically powered hand tool

    DOE Patents [OSTI]

    Myers, Kurt S.; Reed, Teddy R.

    2007-01-16

    An electrically powered hand tool is described and which includes a three phase electrical motor having a plurality of poles; an electrical motor drive electrically coupled with the three phase electrical motor; and a source of electrical power which is converted to greater than about 208 volts three-phase and which is electrically coupled with the electrical motor drive.

  17. Power module assembly

    DOE Patents [OSTI]

    Campbell, Jeremy B. (Torrance, CA); Newson, Steve (Redondo Beach, CA)

    2011-11-15

    A power module assembly of the type suitable for deployment in a vehicular power inverter, wherein the power inverter has a grounded chassis, is provided. The power module assembly comprises a conductive base layer electrically coupled to the chassis, an insulating layer disposed on the conductive base layer, a first conductive node disposed on the insulating layer, a second conductive node disposed on the insulating layer, wherein the first and second conductive nodes are electrically isolated from each other. The power module assembly also comprises a first capacitor having a first electrode electrically connected to the conductive base layer, and a second electrode electrically connected to the first conductive node, and further comprises a second capacitor having a first electrode electrically connected to the conductive base layer, and a second electrode electrically connected to the second conductive node.

  18. Power system applications for PASC converter systems

    SciTech Connect (OSTI)

    Donnelly, M.K.; Johnson, R.M.

    1994-04-01

    This paper shows, using computer EMTP simulations, some preliminary results of applying pulse amplitude synthesis and control (PASC) technology to single-source level voltage converter system. The method can be applied to any single terminal pair source with appropriate modifications in power extraction interface and computer control program to match source and load impedance characteristics. The PASC realization as discussed here employs banks of transformers, one bank per phase, in which the primaries are connected in parallel through a switch matrix to the dc source. Two opposite polarity primaries per transformer are pulsed alternatively in time to produce an oscillatory sinusoidal output waveform. PASC conversion system capabilities to produce both leading and lagging power factor power output in single-phase and three-phase {Delta} or Y configurations are illustrated. EMTP simulations are used to demonstrate the converter capabilities. Also included are discussions regarding harmonics and potential control strategies to adapt the converter to an application or to minimize harmonics.

  19. Tiled QR factorization algorithms

    E-Print Network [OSTI]

    Bouwmeester, Henricus; Langou, Julien; Robert, Yves

    2011-01-01

    This work revisits existing algorithms for the QR factorization of rectangular matrices composed of p-by-q tiles, where p >= q. Within this framework, we study the critical paths and performance of algorithms such as Sameh and Kuck, Modi and Clarke, Greedy, and those found within PLASMA. Although neither Modi and Clarke nor Greedy is optimal, both are shown to be asymptotically optimal for all matrices of size p = q^2 f(q), where f is any function such that \\lim_{+\\infty} f= 0. This novel and important complexity result applies to all matrices where p and q are proportional, p = \\lambda q, with \\lambda >= 1, thereby encompassing many important situations in practice (least squares). We provide an extensive set of experiments that show the superiority of the new algorithms for tall matrices.

  20. Electrical and Production Load Factors 

    E-Print Network [OSTI]

    Sen, T.; Heffington, W. M.

    2009-01-01

    factors and operating hours of small and medium-sized industrial plants are analyzed to classify shift-work patterns and develop energy conservation diagnostic tools. This paper discusses two types of electric load factors for each shift... The purpose of this paper is to analyze operating hours of small and medium-sized manufacturing plants in the United States and develop ranges of load factors for use as diagnostic tools for effective energy management. Load factor is defined...

  1. TEP Power Partners Project [Tucson Electric Power

    SciTech Connect (OSTI)

    2013-11-19

    The Arizona Governor’s Office of Energy Policy, in partnership with Tucson Electric Power (TEP), Tendril, and Next Phase Energy (NPE), formed the TEP Power Partners pilot project to demonstrate how residential customers could access their energy usage data and third party applications using data obtained from an Automatic Meter Reading (AMR) network. The project applied for and was awarded a Smart Grid Data Access grant through the U.S. Department of Energy. The project participants’ goal for Phase I is to actively engage 1,700 residential customers to demonstrate sustained participation, reduction in energy usage (kWh) and cost ($), and measure related aspects of customer satisfaction. This Demonstration report presents a summary of the findings, effectiveness, and customer satisfaction with the 15-month TEP Power Partners pilot project. The objective of the program is to provide residential customers with energy consumption data from AMR metering and empower these participants to better manage their electricity use. The pilot recruitment goals included migrating 700 existing customers from the completed Power Partners Demand Response Load Control Project (DRLC), and enrolling 1,000 new participants. Upon conclusion of the project on November 19, 2013: ? 1,390 Home Area Networks (HANs) were registered. ? 797 new participants installed a HAN. ? Survey respondents’ are satisfied with the program and found value with a variety of specific program components. ? Survey respondents report feeling greater control over their energy usage and report taking energy savings actions in their homes after participating in the program. ? On average, 43 % of the participants returned to the web portal monthly and 15% returned weekly. ? An impact evaluation was completed by Opinion Dynamics and found average participant savings for the treatment period1 to be 2.3% of their household use during this period.2 In total, the program saved 163 MWh in the treatment period of 2013.

  2. EE 442.3 (3 L, 3 Lab) Power Systems Operation and Control

    E-Print Network [OSTI]

    Saskatchewan, University of

    , participation factors, consideration of transmission system effects, penalty factors, and unit commitment; power.usask.ca/university_secretary/honesty/StudentAcademicAppeals.pdf Course Content: MAJOR TOPICS: (Approximate Time Allotment) 1.Economic Dispatch & Unit Commitment (~12, Penalty Factor Considerations, Unit Commitment Problem, Spinning Reserve, Thermal Constraints, Priority

  3. Power Capture (PowCap) Board for Non Intrusive Load Monitoring and Power Line Communication Exploration and Development

    E-Print Network [OSTI]

    Balakrishnan, Vikram

    2013-01-01

    3 Power Line Communication . . . . . . . . . . .Power . . . . . . . . . . . . . . . . . . . . . . . . . . .The Power Capture Board. . . . . . . . . . .

  4. Thermoelectric power generator for variable thermal power source

    DOE Patents [OSTI]

    Bell, Lon E; Crane, Douglas Todd

    2015-04-14

    Traditional power generation systems using thermoelectric power generators are designed to operate most efficiently for a single operating condition. The present invention provides a power generation system in which the characteristics of the thermoelectrics, the flow of the thermal power, and the operational characteristics of the power generator are monitored and controlled such that higher operation efficiencies and/or higher output powers can be maintained with variably thermal power input. Such a system is particularly beneficial in variable thermal power source systems, such as recovering power from the waste heat generated in the exhaust of combustion engines.

  5. On Nonnegative Matrix Factorization Algorithms for Signal-Dependent Noise with Application to Electromyography Data

    E-Print Network [OSTI]

    Devarajan, Karthik

    Nonnegative matrix factorization (NMF) by the multiplicative updates algorithm is a powerful machine learning method for decomposing a high-dimensional nonnegative matrix V into two nonnegative matrices, W and H, where V ...

  6. Multiple factoring in the parallel solution of algebraic equations. Final report

    SciTech Connect (OSTI)

    Van Ness, J.E.

    1985-03-01

    Many power system simulations call for solving large sets of simultaneous algebraic equations. A new multiple factoring algorithm for use in parallel processing requires fewer calculations than past algorithms, thereby reducing computation time and costs for utility multiprocessor networks.

  7. The Power of Non-Uniform Wireless Power

    E-Print Network [OSTI]

    The Power of Non-Uniform Wireless Power ETH Zurich ­ Distributed Computing Group Magnus M-To-Interference-Plus-Noise Ratio (SINR) Formula Minimum signal- to-interference ratio Power level of sender u Path-loss exponent Noise Distance between two nodes Received signal power from sender Received signal power from all other

  8. SMITH AND BARGHNONCONSCIOUS EFFECTS OF POWER NONCONSCIOUS EFFECTS OF POWER

    E-Print Network [OSTI]

    Bargh, John A.

    (2003) recently proposed that power, as a fundamental dimension of human inter- action, affectsSMITH AND BARGHNONCONSCIOUS EFFECTS OF POWER NONCONSCIOUS EFFECTS OF POWER ON BASIC APPROACH to the approach/inhibition theory of power (Keltner, Gruenfeld, & Anderson, 2003), having power should

  9. FUTURE POWER GRID INITIATIVE GridOPTICSTM Power Networking,

    E-Print Network [OSTI]

    FUTURE POWER GRID INITIATIVE GridOPTICSTM Power Networking, Equipment, and Technology (powerNET) Testbed OBJECTIVE A lot of interest in research, improvements, and testing surrounds the power grid to bear on the challenges of the power grid Therefore, a community resource is needed to enable needed

  10. Electric power annual 1992

    SciTech Connect (OSTI)

    Not Available

    1994-01-06

    The Electric Power Annual presents a summary of electric utility statistics at national, regional and State levels. The objective of the publication is to provide industry decisionmakers, government policymakers, analysts and the general public with historical data that may be used in understanding US electricity markets. The Electric Power Annual is prepared by the Survey Management Division; Office of Coal, Nuclear, Electric and Alternate Fuels; Energy Information Administration (EIA); US Department of Energy. ``The US Electric Power Industry at a Glance`` section presents a profile of the electric power industry ownership and performance, and a review of key statistics for the year. Subsequent sections present data on generating capability, including proposed capability additions; net generation; fossil-fuel statistics; retail sales; revenue; financial statistics; environmental statistics; electric power transactions; demand-side management; and nonutility power producers. In addition, the appendices provide supplemental data on major disturbances and unusual occurrences in US electricity power systems. Each section contains related text and tables and refers the reader to the appropriate publication that contains more detailed data on the subject matter. Monetary values in this publication are expressed in nominal terms.

  11. Human Factors Aspects of Operating Small Reactors

    SciTech Connect (OSTI)

    OHara, J.M.; Higgins, J.; Deem, R.; Xing, J.; DAgostino, A.

    2010-11-07

    The nuclear-power community has reached the stage of proposing advanced reactor designs to support power generation for decades to come. They are considering small modular reactors (SMRs) as one approach to meet these energy needs. While the power output of individual reactor modules is relatively small, they can be grouped to produce reactor sites with different outputs. Also, they can be designed to generate hydrogen, or to process heat. Many characteristics of SMRs are quite different from those of current plants, and so may require a concept of operations (ConOps) that also is different. The U.S. Nuclear Regulatory Commission (NRC) has begun examining the human factors engineering- (HFE) and ConOps- aspects of SMRs; if needed, they will formulate guidance to support SMR licensing reviews. We developed a ConOps model, consisting of the following dimensions: Plant mission; roles and responsibilities of all agents; staffing, qualifications, and training; management of normal operations; management of off-normal conditions and emergencies; and, management of maintenance and modifications. We are reviewing information on SMR design to obtain data about each of these dimensions, and have identified several preliminary issues. In addition, we are obtaining operations-related information from other types of multi-module systems, such as refineries, to identify lessons learned from their experience. Here, we describe the project's methodology and our preliminary findings.

  12. Foucault's Ethics of Power

    E-Print Network [OSTI]

    Wolf, Kirk

    Foucault's Ethics of Power Kirk Wolf Delia College 1. I n t r o d u c t i o n Since Foucaull 's death in 19K4, his interpreters have generally located his importance in his genealogical critiques and in his phi­ losophy ofpower. On the one hand... critiques and his views on power remains a matter of dispute, for Foucault neither expressly states a program of critique, nor clearly articulates an account of power. The pur­ pose of this paper, then, is to establish the relationship between...

  13. Salazar on private power

    SciTech Connect (OSTI)

    Anderson, J.

    1995-02-01

    The Philipines power market, considered one of the more mature markets in Asia, continues to expand with economic growth. Independent power producers will find opportunities in the next few years as new additions are required. Currently, the government is encouraging private investment and is awaiting feedback from financiers as it considers eliminating its government guarantee. In a recent interview, the Honorable Mariano S. Salazar, secretary of energy, with the Philippines` Department of Energy, discussed the regulatory structure, encouragement of private power and his country`s capital needs.

  14. Powering | GE Global Research

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgram Guidelines This document w1.½ UniversityPowerSaverPowering

  15. Two-loop enhancement factor for 1/Q corrections to event shapes in deep inelastic scattering

    E-Print Network [OSTI]

    Mrinal Dasgupta; Bryan R. Webber

    2000-10-22

    We compute the two-loop enhancement factors for our earlier one-loop calculations of leading (1/Q) power corrections to the mean values of some event shape variables in deep inelastic lepton scattering. The enhancement is found to be equal to the universal ``Milan factor'' for those shape variables considered, provided the one-loop calculation is performed in a particular way. As a result, the phenomenology of power corrections to DIS event shapes remains largely unaffected.

  16. High Precision Measurement of the Proton Elastic Form Factor Ratio $?_pG_E/G_M$ at low $Q^2$

    E-Print Network [OSTI]

    X. Zhan; K. Allada; D. S. Armstrong; J. Arrington; W. Bertozzi; W. Boeglin; J. -P. Chen; K. Chirapatpimol; S. Choi; E. Chudakov; E. Cisbani; P. Decowski; C. Dutta; S. Frullani; E. Fuchey; F. Garibaldi; S. Gilad; R. Gilman; J. Glister; K. Hafidi; B. Hahn; J. -O. Hansen; D. W. Higinbotham; T. Holmstrom; R. J. Holt; J. Huang; G. M. Huber; F. Itard; C. W. de Jager; X. Jiang; J. Johnson; J. Katich; R. de Leo; J. J. LeRose; R. Lindgren; E. Long; D. J. Margaziotis; S. May-Tal Beck; D. Meekins; R. Michaels; B. Moffit; B. E. Norum; M. Olson; E. Piasetzky; I. Pomerantz; D. Protopopescu; X. Qian; Y. Qiang; A. Rakhman; R. D. Ransome; P. E. Reimer; J. Reinhold; S. Riordan; G. Ron; A. Saha; A. J. Sarty; B. Sawatzky; E. C. Schulte; M. Shabestari; A. Shahinyan; S. Sirca; P. Solvignon; N. F. Sparveris; S. Strauch; R. Subedi; V. Sulkosky; I. Vilardi; Y. Wang; B. Wojtsekhowski; Z. Ye; Y. Zhang

    2011-08-31

    We report a new, high-precision measurement of the proton elastic form factor ratio \\mu_p G_E/G_M for the four-momentum transfer squared Q^2 = 0.3-0.7 (GeV/c)^2. The measurement was performed at Jefferson Lab (JLab) in Hall A using recoil polarimetry. With a total uncertainty of approximately 1%, the new data clearly show that the deviation of the ratio \\mu_p G_E/G_M from unity observed in previous polarization measurements at high Q^2 continues down to the lowest Q^2 value of this measurement. The updated global fit that includes the new results yields an electric (magnetic) form factor roughly 2% smaller (1% larger) than the previous global fit in this Q^2 range. We obtain new extractions of the proton electric and magnetic radii, which are ^(1/2)=0.875+/-0.010 fm and ^(1/2)=0.867+/-0.020 fm. The charge radius is consistent with other recent extractions based on the electron-proton interaction, including the atomic hydrogen Lamb shift measurements, which suggests a missing correction in the comparison of measurements of the proton charge radius using electron probes and the recent extraction from the muonic hydrogen Lamb shift.

  17. Power control system and method

    DOE Patents [OSTI]

    Steigerwald, Robert Louis (Burnt Hills, NY) [Burnt Hills, NY; Anderson, Todd Alan (Niskayuna, NY) [Niskayuna, NY

    2008-02-19

    A power system includes an energy harvesting device, a battery coupled to the energy harvesting device, and a circuit coupled to the energy harvesting device and the battery. The circuit is adapted to deliver power to a load by providing power generated by the energy harvesting device to the load without delivering excess power to the battery and to supplement the power generated by the energy harvesting device with power from the battery if the power generated by the energy harvesting device is insufficient to fully power the load. A method of operating the power system is also provided.

  18. Power control system and method

    DOE Patents [OSTI]

    Steigerwald, Robert Louis; Anderson, Todd Alan

    2006-11-07

    A power system includes an energy harvesting device, a battery coupled to the energy harvesting device, and a circuit coupled to the energy harvesting device and the battery. The circuit is adapted to deliver power to a load by providing power generated by the energy harvesting device to the load without delivering excess power to the battery and to supplement the power generated by the energy harvesting device with power from the battery if the power generated by the energy harvesting device is insufficient to fully power the load. A method of operating the power system is also provided.

  19. POWER CENTRALIZED SEMIGROUPS PRIMOZ MORAVEC

    E-Print Network [OSTI]

    POWER CENTRALIZED SEMIGROUPS PRIMOZ MORAVEC Abstract. A semigroup is said to be power centralized if for every pair of elements x and y there exists a power of x commuting with y. The structure of power centralized groups and semigroups is investigated. In particular, we characterize 0-simple power centralized

  20. Alternative Energy Technologies Solar Power

    E-Print Network [OSTI]

    Scott, Christopher

    #12;Alternative Energy Technologies Solar Power Photovoltaics Concentrating Solar Power (CSP) Power;Concentrating Solar Power (CSP) Reflector material is Aluminum or Silver Tube material ..... Several possible gauges, gas sensors. Light-emitting diodes (LED's) Power amplifiers for cell phones Indium Gallium #12

  1. How Power is Lost: Illusions of Alliance Among the Powerful

    E-Print Network [OSTI]

    Brion, Sebastien

    2010-01-01

    P. M. (1964). Exchange and power in social life. New York:Press. Boeker, W. (1992). Power and managerial dismissal -J. F. Dovidio (Eds. ), Power, Dominance, and Non-verbal

  2. How Power is Lost: Illusions of Alliance Among the Powerful

    E-Print Network [OSTI]

    Brion, Sebastien

    2010-01-01

    The authors found that power led individuals to cheat moreaddress the extent to which power led to overestimations ofthe extent to which power led to illusions of alliance, an

  3. PowerPoint Presentation

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

    * Machine shop * LH lab * Power systems and computer shop * Diagnostics setup lab * Welding shop 5 Year 513-514 2003 Some C-Mod Specific Instrumentation * 360 TF joint...

  4. Mesofluidic magnetohydrodynamic power generation

    E-Print Network [OSTI]

    Fucetola, Jay J

    2012-01-01

    Much of the previous research into magnetohydrodynamics has involved large-scale systems. This thesis explores the miniaturization and use of devices to convert the power dissipated within an expanding gas flow into ...

  5. Power Quality Implications 

    E-Print Network [OSTI]

    Hilson, D.

    1989-01-01

    Electric utilities in the United States spend in excess of one billion dollars annually to maintain or improve the quality of electric power supplied to their customers. Yet, an increasing and alarming number of complaints are being voiced...

  6. Lesson Plan: Power Metering

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

    Power Metering Project Grades: 9-12 Topic: Energy Basics Owner: ACTS This educational material is brought to you by the U.S. Department of Energy's Office of Energy Efficiency and...

  7. PowerPoint Presentation

    Office of Environmental Management (EM)

    and Guy Sliker * NGK - Hiroyuke Abe * EPRI funders (Con Edison, CPS Energy, HECO, Hydro One, NYISO, SDG&E, and TVA) 3 2009 Electric Power Research Institute, Inc. All...

  8. Linear Motor Powered Transportation

    E-Print Network [OSTI]

    Thornton, Richard D.

    This special issue on linear-motor powered transportation covers both supporting technologies and innovative transport systems in various parts of the World, as this technology moves from the lab to commercial operations. ...

  9. PowerPoint Presentation

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

    cable & conductor into 2,000 ft coiled tubing World first high power laser hardware (optics package & fiber connector) tested to >5,000 psi Achieving target requires "world...

  10. Crowd-powered systems

    E-Print Network [OSTI]

    Bernstein, Michael Scott

    2012-01-01

    Crowd-powered systems combine computation with human intelligence, drawn from large groups of people connecting and coordinating online. These hybrid systems enable applications and experiences that neither crowds nor ...

  11. GEOTHERMAL POWER GENERATION PLANT

    Broader source: Energy.gov [DOE]

    Project objectives: Drilling a deep geothermal well on the Oregon Institute of Technology campus, Klamath Falls, OR. Constructing a geothermal power plant on the Oregon Institute of Technology campus.

  12. PowerPoint Presentation

    Office of Environmental Management (EM)

    "Online Sensor Calibration Assessment in Nuclear Power Systems," Invited paper, IEEE I&M Magazine 16(3):32-37, 2013. doi: 10.1109MIM.2013.6521132 "Advanced algorithms...

  13. Wind Power FAQ

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

    Power Frequently Asked Questions QUESTION: Why was the time stamp on my first wind explorer data chip incorrect? ANSWER: You need to program the proper date and time in the wind...

  14. Kenneth W. Powers

    Broader source: Energy.gov [DOE]

    Kenneth W. Powers, a member of the Senior Executive Service, is the Associate Administrator for Management and Budget.  As Associate Administrator, he is responsible for managing NNSA’s...

  15. PowerOptions RFP

    Broader source: Energy.gov [DOE]

    PowerOptions seeks proposals from qualified and experienced renewable energy project developers interested in providing renewable energy and Renewable Energy Credit (RECs) generated from renewable energy projects located in or deliverable to the ISO-NE.

  16. Power System Dispatcher

    Broader source: Energy.gov [DOE]

    As a Power System Dispatcher, you will be working in the Operations Center in Springfield, Missouri as part of the Division of Scheduling & Operations, Office of Corporate Operations. You will...

  17. GMP Solar Power

    Broader source: Energy.gov [DOE]

    Green Mountain Power, an investor-owned electric utility operating in Vermont, offers a credit to customers with net-metered photovoltaic (PV) systems. In addition to the benefits of net metering,...

  18. PowerPoint Presentation

    Energy Savers [EERE]

    to revolutionize the energy efficiency of electric power control and conversion 27 50% Lower Cost Using 75% Less Energy And reuse or recycle >95% of the material Objective Develop...

  19. Structural power flow measurement

    SciTech Connect (OSTI)

    Falter, K.J.; Keltie, R.F.

    1988-12-01

    Previous investigations of structural power flow through beam-like structures resulted in some unexplained anomalies in the calculated data. In order to develop structural power flow measurement as a viable technique for machine tool design, the causes of these anomalies needed to be found. Once found, techniques for eliminating the errors could be developed. Error sources were found in the experimental apparatus itself as well as in the instrumentation. Although flexural waves are the carriers of power in the experimental apparatus, at some frequencies longitudinal waves were excited which were picked up by the accelerometers and altered power measurements. Errors were found in the phase and gain response of the sensors and amplifiers used for measurement. A transfer function correction technique was employed to compensate for these instrumentation errors.

  20. Wind Power Today

    SciTech Connect (OSTI)

    Not Available

    2006-05-01

    Wind Power Today is an annual publication that provides an overview of the wind energy research conducted by the U.S. Department of Energy Wind and Hydropower Technologies Program.

  1. Glucose-powered neuroelectronics

    E-Print Network [OSTI]

    Rapoport, Benjamin Isaac

    2011-01-01

    A holy grail of bioelectronics is to engineer biologically implantable systems that can be embedded without disturbing their local environments, while harvesting from their surroundings all of the power they require. As ...

  2. Bonneville Power Administration

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

    In reply refer to: PGPO Renata Kurschner Director, Generation Resource Management BC Hydro and Power Authority 691 1 Southpoint Drive, El5 Burnaby, B.C., Canada V3N 4 x 8 Dear...

  3. Renewable Power Procurement Policy

    Broader source: Energy.gov [DOE]

    New York Governor George Pataki signed Executive Order No. 111 to promote "Green and Clean" State Buildings and Vehicles on June 10, 2001. The renewable-power procurement component of this order...

  4. Antiderivatives of trigonometric functions 1. Powers of sin(x) or cos(x)

    E-Print Network [OSTI]

    Goodman, Fred

    Antiderivatives of trigonometric functions 1. Powers of sin(x) or cos(x) 1.1. Odd powers of cos(x). Antiderivatives of an odd power of cos(x) are handled by first splitting off one factor of cos(x), for example: cos5 (x)dx = cos4 (x) cos(x)dx. The remaining even power of cos(x) is expressed in terms of sin

  5. Safety Assessment of PowerBeam Flywheel Technology

    SciTech Connect (OSTI)

    Starbuck, J Michael [ORNL; Hansen, James Gerald [ORNL

    2009-11-01

    The greatest technical challenge facing the developer of vehicular flywheel systems is the issue of safety. The PowerBeam flywheel system concept, developed by HyKinesys Inc., employs a pair of high aspect ratio, counter-rotating flywheels to provide surge power for hybrid vehicle applications. The PowerBeam approach to safety is to design flywheels conservatively so as to avoid full rotor burst failure modes. A conservative point design was sized for use in a mid-size sedan such as a Chevrolet Malibu. The PowerBeam rotor rims were designed with a steel tube covered by a carbon fiber reinforced composite tube. ORNL conducted rotor design analyses using both nested ring and finite element analysis design codes. The safety factor of the composite material was 7, while that of the steel was greater than 3. The design exceeded the PNGV recommendation for a safety factor of at least 4 for composite material to prevent flywheel burst.

  6. Lease of Power Privilege Flowchart: Lease of Power Privilege...

    Open Energy Info (EERE)

    Lease of Power Privilege Flowchart: Lease of Power Privilege Contract through End of Construction Jump to: navigation, search OpenEI Reference LibraryAdd to library Permitting...

  7. Microsoft PowerPoint - Vicksburg District Federal Power Projects...

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

    Federal Power Projects Vicksburg District Federal Power Projects Blakely Mountain Hydro DeGray Hydro DeGray Hydro Narrows Hydro Blakely Mountain Rewind Unit 1 ll Rotor...

  8. Silicon Valley Power and Oklahoma Municipal Power Authority Win...

    Energy Savers [EERE]

    for steadily building its renewable energy portfolio in an effort to support its members' green power initiatives. More than a decade ago, OMPA became the first commercial power...

  9. Static Security Analysis based on Vulnerability Index (VI) and Network Contribution Factor

    E-Print Network [OSTI]

    1 Static Security Analysis based on Vulnerability Index (VI) and Network Contribution Factor (NCF introduces a new approach of power system static security analysis based on the Vulnerability Index (VI with the full AC power flow method shows that this approach is promising for fast and accurate static security

  10. Index Terms --Smart grid; power engineering education; power engineering curriculum; power engineering re-

    E-Print Network [OSTI]

    1 Index Terms -- Smart grid; power engineering education; power engineering curriculum; power engineering re- sources; power engineering workforce. Abstract -- A widely supported effort to modernize the United States power system has led to an engineering initiative va- riously known as `smart grid

  11. Studies in Power Quality Success 

    E-Print Network [OSTI]

    Laan, B. A.

    2000-01-01

    The California Energy Commission is actively supporting research and development to improve power quality. Poor power quality can result in productivity losses and compromise safety. Dealing with power quality problems when they arise can solve...

  12. Execution Version POWER PURCHASE AGREEMENT

    E-Print Network [OSTI]

    Firestone, Jeremy

    ") and BLUEWATER WIND DELAWARE LLC ("Seller") June 23, 2008 #12;Execution Version POWER PURCHASE AGREEMENT TableExecution Version POWER PURCHASE AGREEMENT between DELMARVA POWER & LIGHT COMPANY ("Buyer 3.5 Energy Forecasts, Scheduling and Balancing.......................................... 40 3

  13. Power network analysis and optimization

    E-Print Network [OSTI]

    Zhang, Wanping

    2009-01-01

    and J. N. Kozhaya, “Fast power grid simulation,” in Proc.C. Chen, “Efficient large-scale power grid analysis based onare connected between power grid nodes and the ground. Time-

  14. The Dirac Form Factor Predicts the Pauli Form Factor in the Endpoint Model

    E-Print Network [OSTI]

    Sumeet Dagaonkar; Pankaj Jain; John P. Ralston

    2015-03-24

    We compute the momentum-transfer dependence of the proton Pauli form factor $F_{2}$ in the endpoint overlap model. We find the model correctly reproduces the scaling of the ratio of $F_{2}$ with the Dirac Form factor $F_{1}$ observed at the Jefferson Laboratory. The calculation uses the leading-power, leading twist Dirac structure of the quark light-cone wave function, and the same endpoint dependence previously determined from the Dirac form factor $F_{1}$. There are no parameters and no adjustable functions in the endpoint model's prediction for $F_{2}$. The model's predicted ratio $F_{2}(Q^{2})/F_{1}(Q^{2})$ is quite insensitive to the endpoint wave function, which explains why the observed ratio scales like $1/Q$ down to rather low momentum transfers. The endpoint model appears to be the only comprehensive model consistent with all form factor information as well as reproducing fixed-angle proton-proton scattering at large momentum transfer. Any one of the processes is capable of predicting the others.

  15. Power network analysis and optimization

    E-Print Network [OSTI]

    Zhang, Wanping

    2009-01-01

    chip power supply network optimization using multigrid-basedchip decoupling capacitor optimization for high- performanceSapatnekar, “Analysis and optimization of structured power/

  16. Power System Dispatcher (Technical Writer)

    Broader source: Energy.gov [DOE]

    (See Frequently Asked Questions for more information). Where would I be working? Western Area Power Administration Rocky Mountain Region Power System Operations Operations Reliability and Balancing...

  17. Supervisory Physical Scientist (Power Operations)

    Broader source: Energy.gov [DOE]

    This position is located in Duty Scheduling (PGSD), Generation Scheduling (PGS), Power Services (P), Bonneville Power Administration. Duty Scheduling provides 24-hour coverage of the real-time...

  18. QM Power | Department of Energy

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

    PROJECT OBJECTIVE QM Power's Q-Sync(tm) is an innovative, highly efficient and cost effective motor technology. Utilizing DoE SBIR funding, QM Power has developed...

  19. TMD theory, factorization and evolution

    E-Print Network [OSTI]

    John Collins

    2013-07-10

    The concepts and methods of factorization using transverse-momentum-dependent (TMD) parton densities and/or fragmentation functions are summarized.

  20. Filling factors and Braid group

    E-Print Network [OSTI]

    Wellington Cruz

    1998-02-25

    We extract the Braid group structure of a recently derived hierarchy scheme for the filling factors proposed by us which related the Hausdorff dimension, $h$, to statistics, $\

  1. Automating power supply checkout

    SciTech Connect (OSTI)

    Laster, J.; Bruno, D.; D'Ottavio, T.; Drozd, J.; Marr, G.; Mi, C.

    2011-03-28

    Power Supply checkout is a necessary, pre-beam, time-critical function. At odds are the desire to decrease the amount of time to perform the checkout while at the same time maximizing the number and types of checks that can be performed and analyzing the results quickly (in case any problems exist that must be addressed). Controls and Power Supply Group personnel have worked together to develop tools to accomplish these goals. Power Supply checkouts are now accomplished in a time-frame of hours rather than days, reducing the number of person-hours needed to accomplish the checkout and making the system available more quickly for beam development. The goal of the Collider-Accelerator Department (CAD) at Brookhaven National Laboratory is to provide experimenters with collisions of heavy-ions and polarized protons. The Relativistic Heavy-Ion Collider (RHIC) magnets are controlled by 100's of varying types of power supplies. There is a concentrated effort to perform routine maintenance on the supplies during shutdown periods. There is an effort at RHIC to streamline the time needed for system checkout in order to quickly arrive at a period of beam operations for RHIC. This time-critical period is when the checkout of the power supplies is performed as the RHIC ring becomes cold and the supplies are connected to their physical magnets. The checkout process is used to identify problems in voltage and current regulation by examining data signals related to each for problems in settling and regulation (ripple).

  2. High power connection system

    DOE Patents [OSTI]

    Schaefer, Christopher E. (Warren, OH); Beer, Robert C. (Noblesville, IN); McCall, Mark D. (Youngstown, OH)

    2000-01-01

    A high power connection system adapted for automotive environments which provides environmental and EMI shielding includes a female connector, a male connector, and a panel mount. The female connector includes a female connector base and a snap fitted female connector cover. The male connector includes a male connector base and a snap fitted male connector cover. The female connector base has at least one female power terminal cavity for seatably receiving a respective female power terminal. The male connector base has at least one male power terminal cavity for seatably receiving a respective male power terminal. The female connector is covered by a cover seal and a conductive shroud. A pair of lock arms protrude outward from the front end of the male connector base, pass through the panel mount and interface with a lever of a lever rotatably connected to the shroud to thereby mechanically assist mating of the male and female connectors. Safety terminals in the male and female connectors provide a last-to-connect-first-to-break connection with an HVIL circuit.

  3. Electronic power conditioning for dynamic power conversion in high-power space systems 

    E-Print Network [OSTI]

    Hansen, James Michael

    1991-01-01

    power conversion allows for improved methods of power conditioning. A block diagram of one such system that uses dynamic power conversion is shown in Fig. 4. The blocks labeled Energy Source, Primary Heat Rejection, snd User's Load are the same...ELECTRONIC POWER CONDITIONING FOR DYNAMIC POWER CONVERSION IN HIGH ? POWER SPACE SYSTEMS A Thesis by JAMES MICHAEL HANSEN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements...

  4. Photonic-powered cable assembly

    DOE Patents [OSTI]

    Sanderson, Stephen N.; Appel, Titus James; Wrye, IV, Walter C.

    2013-01-22

    A photonic-cable assembly includes a power source cable connector ("PSCC") coupled to a power receive cable connector ("PRCC") via a fiber cable. The PSCC electrically connects to a first electronic device and houses a photonic power source and an optical data transmitter. The fiber cable includes an optical transmit data path coupled to the optical data transmitter, an optical power path coupled to the photonic power source, and an optical feedback path coupled to provide feedback control to the photonic power source. The PRCC electrically connects to a second electronic device and houses an optical data receiver coupled to the optical transmit data path, a feedback controller coupled to the optical feedback path to control the photonic power source, and a photonic power converter coupled to the optical power path to convert photonic energy received over the optical power path to electrical energy to power components of the PRCC.

  5. Photonic-powered cable assembly

    DOE Patents [OSTI]

    Sanderson, Stephen N; Appel, Titus James; Wrye, IV, Walter C

    2014-06-24

    A photonic-cable assembly includes a power source cable connector ("PSCC") coupled to a power receive cable connector ("PRCC") via a fiber cable. The PSCC electrically connects to a first electronic device and houses a photonic power source and an optical data transmitter. The fiber cable includes an optical transmit data path coupled to the optical data transmitter, an optical power path coupled to the photonic power source, and an optical feedback path coupled to provide feedback control to the photonic power source. The PRCC electrically connects to a second electronic device and houses an optical data receiver coupled to the optical transmit data path, a feedback controller coupled to the optical feedback path to control the photonic power source, and a photonic power converter coupled to the optical power path to convert photonic energy received over the optical power path to electrical energy to power components of the PRCC.

  6. Distributed Power Delivery for Energy Efficient and Low Power Systems

    E-Print Network [OSTI]

    Friedman, Eby G.

    Distributed Power Delivery for Energy Efficient and Low Power Systems Selc¸uk K¨ose Department are needed to determine the location of these on-chip power supplies and decoupling capacitors. In this paper, the optimal location of the power supplies and decoupling capacitors is determined for different size

  7. Running Head: TESTOSTERONE AND POWER Testosterone and power

    E-Print Network [OSTI]

    Schultheiss, Oliver C.

    Running Head: TESTOSTERONE AND POWER Testosterone and power Steven J. Stanton and Oliver C. Schultheiss University of Michigan, Ann Arbor, MI, USA To appear in: K. Dowding (Ed.), Encyclopedia of power-647-9440, email: stantons@umich.edu #12;Testosterone and power 2 Across many studies in humans, two functional

  8. Preventing power outages Power system contingency analysis on the GPU

    E-Print Network [OSTI]

    Vuik, Kees

    problem. Moreover, the power system has to keep functioning properly even when a transmission line failsPreventing power outages Power system contingency analysis on the GPU To provide electricity generators, nuclear power plants, wind turbines, etc.) and a network of lines and cables to transmit

  9. Power Systems Development Facility

    SciTech Connect (OSTI)

    Southern Company Services

    2009-01-31

    In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF), located in Wilsonville, Alabama, has routinely demonstrated gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This final report summarizes the results of the technology development work conducted at the PSDF through January 31, 2009. Twenty-one major gasification test campaigns were completed, for a total of more than 11,000 hours of gasification operation. This operational experience has led to significant advancements in gasification technologies.

  10. Powered protrusion cutter

    DOE Patents [OSTI]

    Bzorgi, Fariborz M. (Knoxville, TN)

    2010-03-09

    An apparatus for clipping a protrusion of material is provided. The protrusion may, for example, be a bolt head, a nut, a rivet, a weld bead, or a temporary assembly alignment tab protruding from a substrate surface of assembled components. The apparatus typically includes a cleaver having a cleaving edge and a cutting blade having a cutting edge. Generally, a mounting structure configured to confine the cleaver and the cutting blade and permit a range of relative movement between the cleaving edge and the cutting edge is provided. Also typically included is a power device coupled to the cutting blade. The power device is configured to move the cutting edge toward the cleaving edge. In some embodiments the power device is activated by a momentary switch. A retraction device is also generally provided, where the retraction device is configured to move the cutting edge away from the cleaving edge.

  11. Power converter connection configuration

    DOE Patents [OSTI]

    Beihoff, Bruce C. (Wauwatosa, WI); Kehl, Dennis L. (Milwaukee, WI); Gettelfinger, Lee A. (Brown Deer, WI); Kaishian, Steven C. (Milwaukee, WI); Phillips, Mark G. (Brookfield, WI); Radosevich, Lawrence D. (Muskego, WI)

    2008-11-11

    EMI shielding is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support forms a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

  12. Power line detection system

    DOE Patents [OSTI]

    Latorre, V.R.; Watwood, D.B.

    1994-09-27

    A short-range, radio frequency (RF) transmitting-receiving system that provides both visual and audio warnings to the pilot of a helicopter or light aircraft of an up-coming power transmission line complex. Small, milliwatt-level narrowband transmitters, powered by the transmission line itself, are installed on top of selected transmission line support towers or within existing warning balls, and provide a continuous RF signal to approaching aircraft. The on-board receiver can be either a separate unit or a portion of the existing avionics, and can also share an existing antenna with another airborne system. Upon receipt of a warning signal, the receiver will trigger a visual and an audio alarm to alert the pilot to the potential power line hazard. 4 figs.

  13. 734 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 39, NO. 3, MAY/JUNE 2003 Modeling of Iron Losses of Permanent-Magnet

    E-Print Network [OSTI]

    Mi, Chunting "Chris"

    currents, hysteresis, iron losses, permanent magnets (PMs), permanent-magnet (PM) machines, synchronous Losses of Permanent-Magnet Synchronous Motors Chunting Mi, Member, IEEE, Gordon R. Slemon, Life Fellow and the reduction of stator loss from operation near unity power factor. In PM machines, iron losses form

  14. Qualification for PowerInsight accuracy of power measurements.

    SciTech Connect (OSTI)

    DeBonis, David; Laros, James H.,; Pedretti, Kevin Thomas Tauke

    2013-11-01

    Accuracy of component based power measuring devices forms a necessary basis for research in the area of power-e cient and power-aware computing. The accuracy of these devices must be quanti ed within a reasonable tolerance. This study focuses on PowerInsight, an out- of-band embedded measuring device which takes readings of power rails on compute nodes within a HPC system in realtime. We quantify how well the device performs in comparison to a digital oscilloscope as well as PowerMon2. We show that the accuracy is within a 6% deviation on measurements under reasonable load.

  15. High-Power Microwave Switch Employing Electron Beam Triggering

    SciTech Connect (OSTI)

    Jay L. Hirshfield

    2012-09-19

    A high-power active microwave pulse compressor is described that modulates the quality factor Q of the energy storage cavity by a new means involving mode conversion controlled by a triggered electron-beam discharge through a switch cavity. The electron beam is emitted from a diamond-coated molybdenum cathode. This report describes the principle of operation, the design of the switch, the configuration used for the test, and the experimental results. The pulse compressor produced output pulses with 140 - Ã?Â?165 MW peak power, power gain of 16 - 20, and pulse duration of 16 - 20 ns at a frequency of 11.43 GHz.

  16. Cut Your Power Bills 

    E-Print Network [OSTI]

    Greenwood, R. W.

    1979-01-01

    CUT YOUR POWER BILLS Ralph W. Greenwood Manager, Electric Po\\yer & Steam Supply Union Carbide Corporation INTRODUCTION Electric power bills can often be reduced by careful attention to the inter-relationship between your plant operations... of work and determines the amount of fuel the utility must burn. One kW equals 3413 BTU. ~ hr. Before we analyze how a rate interacts with a customer's load profile, we need to see how a rate is con structed. Rate Design Custome~ Demand and Energy...

  17. Power electronics cooling apparatus

    DOE Patents [OSTI]

    Sanger, Philip Albert (Monroeville, PA); Lindberg, Frank A. (Baltimore, MD); Garcen, Walter (Glen Burnie, MD)

    2000-01-01

    A semiconductor cooling arrangement wherein a semiconductor is affixed to a thermally and electrically conducting carrier such as by brazing. The coefficient of thermal expansion of the semiconductor and carrier are closely matched to one another so that during operation they will not be overstressed mechanically due to thermal cycling. Electrical connection is made to the semiconductor and carrier, and a porous metal heat exchanger is thermally connected to the carrier. The heat exchanger is positioned within an electrically insulating cooling assembly having cooling oil flowing therethrough. The arrangement is particularly well adapted for the cooling of high power switching elements in a power bridge.

  18. Current Power Rates

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit theCovalent Bonding in ActinideRail betweenProtectionCurrentJobPower-Rates

  19. Power Prepay Next Steps:

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgram Guidelines This document w w w.pv - te ch.orgPower Plant

  20. Final Report: Assessment of Combined Heat and Power Premium Power Applications in California

    E-Print Network [OSTI]

    Norwood, Zack

    2010-01-01

    ASSESSMENT OF COMBINED HEAT AND POWER SYSTEM “PREMIUM POWER”Assessment of Combined Heat and Power Premium Power1 The Pacific Region Combined Heat and Power Application

  1. Journal Information Journal Impact Factor

    E-Print Network [OSTI]

    Krejcí, Pavel

    Journal Information Journal Impact Factor 5-Year Journal Impact Factor Journal Self Cites Journal Immediacy Index 2014 JCR Science Edition Journal: Applications of Mathematics Mark Journal Title ISSN Total- life APPL MATH-CZECH 0862-7940 241 0.400 0.430 0.024 42 8.9 >10.0 Cited Journal Citing Journal Source

  2. Journal Information Journal Impact Factor

    E-Print Network [OSTI]

    Krejcí, Pavel

    Journal Information Journal Impact Factor 5-Year Journal Impact Factor Journal Self Cites Journal Immediacy Index 2012 JCR Science Edition Journal: Applications of Mathematics Mark Journal Title ISSN Total- life APPL MATH-CZECH 0862-7940 240 0.222 0.549 0.054 37 7.3 >10.0 Cited Journal Citing Journal Source

  3. Sandia Energy - Conventional Water Power: Market Acceleration

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

    Market Acceleration Home Stationary Power Energy Conversion Efficiency Water Power Conventional Water Power: Market Acceleration Conventional Water Power: Market AccelerationTara...

  4. Wholesale Power Rate Schedules | Department of Energy

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

    Rate Schedules Wholesale Power Rate Schedules Wholesale Power Rate Schedules October 1, 2012 ALA-1-N Wholesale Power Rate Schedule Area: PowerSouth Energy Cooperative System:...

  5. Power Systems Engineer | Princeton Plasma Physics Lab

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

    technical support and assistance on complicated Power System electrical, electronic and control systems. Knowledge of AC Power, power conversion, DC circuits, motors, power...

  6. Adaptive architectures for peak power management

    E-Print Network [OSTI]

    Kontorinis, Vasileios

    2013-01-01

    targeted at the average power), saving wall power. Realisticassociated costs like wall-power cost, cooling, and powertranslates to reduced wall power costs, that is lower elec-

  7. Power Systems Life Cycle Analysis Tool (Power L-CAT).

    SciTech Connect (OSTI)

    Andruski, Joel; Drennen, Thomas E.

    2011-01-01

    The Power Systems L-CAT is a high-level dynamic model that calculates levelized production costs and tracks environmental performance for a range of electricity generation technologies: natural gas combined cycle (using either imported (LNGCC) or domestic natural gas (NGCC)), integrated gasification combined cycle (IGCC), supercritical pulverized coal (SCPC), existing pulverized coal (EXPC), nuclear, and wind. All of the fossil fuel technologies also include an option for including carbon capture and sequestration technologies (CCS). The model allows for quick sensitivity analysis on key technical and financial assumptions, such as: capital, O&M, and fuel costs; interest rates; construction time; heat rates; taxes; depreciation; and capacity factors. The fossil fuel options are based on detailed life cycle analysis reports conducted by the National Energy Technology Laboratory (NETL). For each of these technologies, NETL's detailed LCAs include consideration of five stages associated with energy production: raw material acquisition (RMA), raw material transport (RMT), energy conversion facility (ECF), product transportation and distribution (PT&D), and end user electricity consumption. The goal of the NETL studies is to compare existing and future fossil fuel technology options using a cradle-to-grave analysis. The NETL reports consider constant dollar levelized cost of delivered electricity, total plant costs, greenhouse gas emissions, criteria air pollutants, mercury (Hg) and ammonia (NH3) emissions, water withdrawal and consumption, and land use (acreage).

  8. Federal Incentives for Water Power

    SciTech Connect (OSTI)

    2013-04-05

    This factsheet lists the major federal incentives for water power technologies available as of April 2013.

  9. Hierarchical Adaptive Dynamic Power Management

    E-Print Network [OSTI]

    Chen, Yuanzhu Peter

    life by switching devices to lower-power modes when there is a reduced demand for service. Static power (MDPs). The power manager then switches online among these policies to accommodate the stochastic mode-switching rate of the nonstationary request process. Index Terms--Low-power design, hierarchical modeling

  10. Power marketing and renewable energy

    SciTech Connect (OSTI)

    Fang, J.M.

    1997-09-01

    Power marketing refers to wholesale and retail transactions of electric power made by companies other than public power entities and the regulated utilities that own the generation and distribution lines. The growth in power marketing has been a major development in the electric power industry during the last few years, and power marketers are expected to realize even more market opportunities as electric industry deregulation proceeds from wholesale competition to retail competition. This Topical Issues Brief examines the nature of the power marketing business and its relationship with renewable power. The information presented is based on interviews conducted with nine power marketing companies, which accounted for almost 54% of total power sales by power marketers in 1995. These interviews provided information on various viewpoints of power marketers, their experience with renewables, and their respective outlooks for including renewables in their resource portfolios. Some basic differences exist between wholesale and retail competition that should be recognized when discussing power marketing and renewable power. At the wholesale level, the majority of power marketers stress the commodity nature of electricity. The primary criteria for developing resource portfolios are the same as those of their wholesale customers: the cost and reliability of power supplies. At the retail level, electricity may be viewed as a product that includes value-added characteristics or services determined by customer preferences.

  11. Thermoelectrically Pumped Light-Emitting Diodes Operating above Unity Efficiency

    E-Print Network [OSTI]

    Santhanam, Parthiban

    A heated semiconductor light-emitting diode at low forward bias voltage Velectrical work to pump heat from the lattice to the photon field. Here the rates of both radiative and nonradiative recombination ...

  12. Reasoning About Code Mobility with Mobile Unity GIAN PIETRO PICCO

    E-Print Network [OSTI]

    Picco, Gian Pietro

    @cs.wustl.edu; P.J. McCann, Lucent Technologies, 263 Shuman Blvd, Naperville, IL 60566-7050. E-mail: mccap

  13. Functions and the Unity of Mathematics Daniel Henry Gottlieb

    E-Print Network [OSTI]

    inclined to say yes. Hence I take the above definition of Mathema* *tics as mathematical and not merely these principles it would give us great insight into the development of Mathema* *tics and perhaps even insight

  14. ELECTROCHEMICAL POWER FOR TRANSPORTATION

    SciTech Connect (OSTI)

    Cairns, Elton J.; Hietbrink, Earl H.

    1981-01-01

    This section includes some historical background of the rise and fall and subsequent rebirth of the electric vehicle; and a brief discussion of current transportation needs, and environmental and energy utilization issues that resulted in the renewed interest in applying electrochemical energy conversion technology to electric vehicle applications. Although energy utilization has evolved to be the most significant and important issue, the environmental issue will be discussed first in this section only because of its chronological occurrence. The next part of the chapter is a review of passenger and commercial electric vehicle technology with emphasis on vehicle design and demonstrated performance of vehicles with candidate power sources being developed. This is followed by a discussion of electrochemical power source requirements associated with future electric vehicles that can play a role in meeting modern transportation needs. The last part of the chapter includes first a discussion of how to identify candidate electrochemical systems that might be of interest in meeting electric vehicle power source requirements. This is then followed by a review of the current technological status of these systems and a discussion of the most significant problems that must be resolved before each candidate system can be a viable power source.

  15. High Power Cryogenic Targets

    SciTech Connect (OSTI)

    Gregory Smith

    2011-08-01

    The development of high power cryogenic targets for use in parity violating electron scattering has been a crucial ingredient in the success of those experiments. As we chase the precision frontier, the demands and requirements for these targets have grown accordingly. We discuss the state of the art, and describe recent developments and strategies in the design of the next generation of these targets.

  16. Reactive Power Compensating System.

    DOE Patents [OSTI]

    Williams, Timothy J.; El-Sharkawi, Mohamed A.; Venkata, Subrahmanyam S.

    1985-01-04

    The circuit was designed for the specific application of wind-driven induction generators. It has great potential for application in any situation where a varying reactive power load is present, such as with induction motors or generators, or for transmission network compensation.

  17. Concentrating Solar Power Basics

    Office of Energy Efficiency and Renewable Energy (EERE)

    Concentrating solar power (CSP) technologies use mirrors to reflect and concentrate sunlight onto receivers that collect solar energy and convert it to heat. This thermal energy can then be used to produce electricity via a steam turbine or heat engine that drives a generator.

  18. Capacity Demand Power (GW)

    E-Print Network [OSTI]

    California at Davis, University of

    Capacity Demand Power (GW) Hour of the Day The "Dip" Electricity Demand in Electricity Demand Every weekday, Japan's electricity use dips about 6 GW at 12 but it also shows that: · Behavior affects naHonal electricity use in unexpected ways

  19. Pig Poop Power

    E-Print Network [OSTI]

    Hacker, Randi; Tsutsui, William

    2007-04-11

    Broadcast Transcript: What could be more fitting in the Year of the Pig than to turn to the pig for power? And that's what is happening here in South Korea. In an effort to develop environmentally friendly, renewable energy sources, the South...

  20. About sponsorship Fusion power

    E-Print Network [OSTI]

    About sponsorship Fusion power Nuclear ambitions Jun 30th 2005 From The Economist print edition project to build a nuclear-fusion reactor came a step closer to reality when politicians agreed it should century, fusion advocates have claimed that achieving commercial nuclear fusion is 30 years away

  1. Reactive power compensating system

    DOE Patents [OSTI]

    Williams, Timothy J. (Redondo Beach, CA); El-Sharkawi, Mohamed A. (Renton, WA); Venkata, Subrahmanyam S. (Seattle, WA)

    1987-01-01

    The reactive power of an induction machine is compensated by providing fixed capacitors on each phase line for the minimum compensation required, sensing the current on one line at the time its voltage crosses zero to determine the actual compensation required for each phase, and selecting switched capacitors on each line to provide the balance of the compensation required.

  2. Wireless adiabatic power transfer

    E-Print Network [OSTI]

    A. A. Rangelov; H. Suchowski; Y. Silberberg; N. V. Vitanov

    2010-10-30

    We propose a technique for efficient mid-range wireless power transfer between two coils, by adapting the process of adiabatic passage for a coherently driven two-state quantum system to the realm of wireless energy transfer. The proposed technique is shown to be robust to noise, resonant constraints, and other interferences that exist in the neighborhood of the coils.

  3. Bottle Rock Power Corporation

    E-Print Network [OSTI]

    Power Plant and Steamfield during suspended operations of the geothermal facility in accordance). That Order was extended to DWR and that extension expired on 26 April 2001. On 30 May 2001, the CEC approved for calendar years 2001, 2002, and 2003. The BRPC has also submitted the requisite annual reports for those

  4. PowerPoint Presentation

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

    to EN Board April 24, 2014 1 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 Energy Northwest and Bonneville Power Recent Pricing On April 9 th , Energy Northwest...

  5. Power Consumption in Enterprise-Scale Backup Storage Systems Appears in the tenth USENIX Conference on File and Storage Technologies (FAST 2012)

    E-Print Network [OSTI]

    Zadok, Erez

    Brook University Backup Recovery Systems Division EMC Corporation Abstract Power consumption has become an important factor in modern storage system design. Power efficiency is particularly beneficial in disk their impact on future power-efficient designs. 1 Introduction Power has become an important design

  6. Human factors engineering program review model

    SciTech Connect (OSTI)

    Not Available

    1994-07-01

    The staff of the Nuclear Regulatory Commission is performing nuclear power plant design certification reviews based on a design process plan that describes the human factors engineering (HFE) program elements that are necessary and sufficient to develop an acceptable detailed design specification and an acceptable implemented design. There are two principal reasons for this approach. First, the initial design certification applications submitted for staff review did not include detailed design information. Second, since human performance literature and industry experiences have shown that many significant human factors issues arise early in the design process, review of the design process activities and results is important to the evaluation of an overall design. However, current regulations and guidance documents do not address the criteria for design process review. Therefore, the HFE Program Review Model (HFE PRM) was developed as a basis for performing design certification reviews that include design process evaluations as well as review of the final design. A central tenet of the HFE PRM is that the HFE aspects of the plant should be developed, designed, and evaluated on the basis of a structured top-down system analysis using accepted HFE principles. The HFE PRM consists of ten component elements. Each element in divided into four sections: Background, Objective, Applicant Submittals, and Review Criteria. This report describes the development of the HFE PRM and gives a detailed description of each HFE review element.

  7. High power solid state laser modulator

    DOE Patents [OSTI]

    Birx, Daniel L.; Ball, Don G.; Cook, Edward G.

    2004-04-27

    A multi-stage magnetic modulator provides a pulse train of .+-.40 kV electrical pulses at a 5-7 kHz repetition rate to a metal vapor laser. A fractional turn transformer steps up the voltage by a factor of 80 to 1 and magnetic pulse compression is used to reduce the pulse width of the pulse train. The transformer is fabricated utilizing a rod and plate stack type of construction to achieve a high packing factor. The pulses are controlled by an SCR stack where a plurality of SCRs are electrically connected in parallel, each SCR electrically connected to a saturable inductor, all saturable inductors being wound on the same core of magnetic material for enhanced power handling characteristics.

  8. Use of wind power forecasting in operational decisions.

    SciTech Connect (OSTI)

    Botterud, A.; Zhi, Z.; Wang, J.; Bessa, R.J.; Keko, H.; Mendes, J.; Sumaili, J.; Miranda, V.

    2011-11-29

    The rapid expansion of wind power gives rise to a number of challenges for power system operators and electricity market participants. The key operational challenge is to efficiently handle the uncertainty and variability of wind power when balancing supply and demand in ths system. In this report, we analyze how wind power forecasting can serve as an efficient tool toward this end. We discuss the current status of wind power forecasting in U.S. electricity markets and develop several methodologies and modeling tools for the use of wind power forecasting in operational decisions, from the perspectives of the system operator as well as the wind power producer. In particular, we focus on the use of probabilistic forecasts in operational decisions. Driven by increasing prices for fossil fuels and concerns about greenhouse gas (GHG) emissions, wind power, as a renewable and clean source of energy, is rapidly being introduced into the existing electricity supply portfolio in many parts of the world. The U.S. Department of Energy (DOE) has analyzed a scenario in which wind power meets 20% of the U.S. electricity demand by 2030, which means that the U.S. wind power capacity would have to reach more than 300 gigawatts (GW). The European Union is pursuing a target of 20/20/20, which aims to reduce greenhouse gas (GHG) emissions by 20%, increase the amount of renewable energy to 20% of the energy supply, and improve energy efficiency by 20% by 2020 as compared to 1990. Meanwhile, China is the leading country in terms of installed wind capacity, and had 45 GW of installed wind power capacity out of about 200 GW on a global level at the end of 2010. The rapid increase in the penetration of wind power into power systems introduces more variability and uncertainty in the electricity generation portfolio, and these factors are the key challenges when it comes to integrating wind power into the electric power grid. Wind power forecasting (WPF) is an important tool to help efficiently address this challenge, and significant efforts have been invested in developing more accurate wind power forecasts. In this report, we document our work on the use of wind power forecasting in operational decisions.

  9. Performance Issues for a Changing Electric Power Industry

    Reports and Publications (EIA)

    1995-01-01

    Provides an overview of some of the factors affecting reliability within the electric bulk power system. Historical and projected data related to reliability issues are discussed on a national and regional basis. Current research on economic considerations associated with reliability levels is also reviewed.

  10. ECE 617: Economic Control of Interconnected Power Systems Description

    E-Print Network [OSTI]

    Haimovich, Alexander

    ; economic dispatch, penalty factors, optimal power flow, short-term electricity markets and locational economic dispatch problem 4. Thermal unit economic dispatch and methods of solution 5. Optimization with constraints 6. Optimization methods such as linear programming, dynamic programming, nonlinear optimization

  11. Power Modeling of Graphical User Interfaces on OLED Mian Dong Yung-Seok Kevin Choi Lin Zhong

    E-Print Network [OSTI]

    Zhong, Lin

    Algorithms, Measurement, Human Factors Keywords OLED Display, Graphic User Interface, Low Power 1Power Modeling of Graphical User Interfaces on OLED Displays Mian Dong Yung-Seok Kevin Choi Lin external lighting; and consume drastically different power when displaying different colors, due

  12. Analysis of operating data related to power and flow distribution in a PWR

    E-Print Network [OSTI]

    Herbin, Henry Christophe

    1974-01-01

    The analysis of the effects of the uncertainties associated with temperature and power measurements in the Connecticut Yankee Reactor leads to the evaluation of the uncertainty associated with the effective flow factor. ...

  13. The impact of identity and power on marital social support behavior 

    E-Print Network [OSTI]

    Hunter-Holmes, Pam

    2005-11-01

    the impact of these powerful social factors. Specifically, I hypothesize that marital partners who are similar in their identities will be better able to offer social support in conversations in which those identities are salient. I also hypothesize...

  14. Analysis and design of closed-loop control of power electronic converter systems 

    E-Print Network [OSTI]

    Huang, Yenchin

    1997-01-01

    filter system to cancel neutral current harmonic (IOOA) in a threephase four-wire electric distribution system. (b)Input power factor correction and harmonic reduction stage of a commercially available electronic ballast (12OV, 64W) for fluorescent...

  15. Inverter for interfacing advanced energy sources to a utility grid

    DOE Patents [OSTI]

    Steigerwald, Robert L. (Scotia, NY)

    1984-01-01

    A transistor is operated in the PWM mode such that a hlaf sine wave of current is delivered first to one-half of a distribution transformer and then the other as determined by steering thyristors operated at the fundamental sinusoidal frequency. Power to the transistor is supplied by a dc source such as a solar array and the power is converted such that a sinusoidal current is injected into a utility at near unity power factor.

  16. Electrical and Production Load Factors 

    E-Print Network [OSTI]

    Sen, Tapajyoti

    2010-07-14

    Load factors are an important simplification of electrical energy use data and depend on the ratio of average demand to peak demand. Based on operating hours of a facility they serve as an important benchmarking tool for the industrial sector...

  17. Human Factors of Reporting Systems

    E-Print Network [OSTI]

    Johnson, C.W.

    Johnson,C.W. P. Carayon (ed.), A Handbook of Human Factors and Ergonomics in Healthcare and Patient Safety, Lawrence Erlbaum, London, UK. pp 715-750 Lawrence Erlbaum Associates

  18. Nuclear medium effect on nuclear modification factor of protons and pions in intermediate-energy heavy ion collisions

    E-Print Network [OSTI]

    Lv, Ming; Chen, Jin-Hui; Fang, De-Qing; Zhang, Guo-Qiang

    2015-01-01

    Nuclear modification factor ($R_{cp}$) of protons and pions are investigated by simulating Au + Au collisions from 0.8 to 1.8$A$ GeV in a framework of an isospin-dependent quantum molecular dynamics (IQMD) model. $R_{cp}$ of protons rises with the increase of \\pt~ at different beam energies owing to radial flow and Cronin effect. The rate of increase of \\rcp~ is suppressed at higher beam energies. The significant difference of $R_{cp}$ between protons and pions indicates different medium effects between protons and pions. By changing the in-medium nucleon-nucleon cross section, the $R_{cp}$ of protons changes a lot, while the $R_{cp}$ of pions does not. Taking the pion absorption into account, the $R_{cp}$ of pions becomes close to unity without $p_{T}$ dependence after deactivating the reaction $\\pi N \\rightarrow \\Delta$, while there is nearly no change on proton. This suggests that the pion absorption plays a dominant role on pion dynamics and have slight effect for proton dynamics.

  19. The powers of deconfinement

    SciTech Connect (OSTI)

    Megias,E.; Ruiz Arriola, E.; Megias, E.; Salcedo, L.L.

    2008-07-07

    The trace anomaly of gluodynamics encodes the breakdown of classical scale invariance due to interactions around the deconfinement phase transition. While it is expected that at high temperatures perturbation theory becomes applicable we show that current lattice calculations are far from the perturbative regime and are dominated instead by inverse even power corrections in the temperature, while the total perturbative contribution is estimated to be extremely small and compatible with zero within error bars. We provide an interpretation in terms of dimension-two gluon condensate of the dimensionally reduced theory which value agrees with a similar analysis of power corrections from available lattice data for the renormalized Polyakov loop and the heavy quark-antiquark free energy in the deconfined phase of QCD [1,2].

  20. Switching power supply

    DOE Patents [OSTI]

    Mihalka, A.M.

    1984-06-05

    The invention is a repratable capacitor charging, switching power supply. A ferrite transformer steps up a dc input. The transformer primary is in a full bridge configuration utilizing power MOSFETs as the bridge switches. The transformer secondary is fed into a high voltage, full wave rectifier whose output is connected directly to the energy storage capacitor. The transformer is designed to provide adequate leakage inductance to limit capacitor current. The MOSFETs are switched to the variable frequency from 20 to 50 kHz to charge a capacitor from 0.6 kV. The peak current in a transformer primary and secondary is controlled by increasing the pulse width as the capacitor charges. A digital ripple counter counts pulses and after a preselected desired number is reached an up-counter is clocked.

  1. Oscillating fluid power generator

    DOE Patents [OSTI]

    Morris, David C

    2014-02-25

    A system and method for harvesting the kinetic energy of a fluid flow for power generation with a vertically oriented, aerodynamic wing structure comprising one or more airfoil elements pivotably attached to a mast. When activated by the moving fluid stream, the wing structure oscillates back and forth, generating lift first in one direction then in the opposite direction. This oscillating movement is converted to unidirectional rotational movement in order to provide motive power to an electricity generator. Unlike other oscillating devices, this device is designed to harvest the maximum aerodynamic lift forces available for a given oscillation cycle. Because the system is not subjected to the same intense forces and stresses as turbine systems, it can be constructed less expensively, reducing the cost of electricity generation. The system can be grouped in more compact clusters, be less evident in the landscape, and present reduced risk to avian species.

  2. Hydrogen powered bus

    ScienceCinema (OSTI)

    None

    2013-11-22

    Take a ride on a new type of bus, fueled by hydrogen. These hydrogen taxis are part of a Department of Energy-funded deployment of hydrogen powered vehicles and fueling infrastructure at nine federal facilities across the country to demonstrate this market-ready advanced technology. Produced and leased by Ford Motor Company , they consist of one 12- passenger bus and one nine-passenger bus. More information at: http://go.usa.gov/Tgr

  3. Combustion powered linear actuator

    DOE Patents [OSTI]

    Fischer, Gary J. (Albuquerque, NM)

    2007-09-04

    The present invention provides robotic vehicles having wheeled and hopping mobilities that are capable of traversing (e.g. by hopping over) obstacles that are large in size relative to the robot and, are capable of operation in unpredictable terrain over long range. The present invention further provides combustion powered linear actuators, which can include latching mechanisms to facilitate pressurized fueling of the actuators, as can be used to provide wheeled vehicles with a hopping mobility.

  4. Powering Mars Rovers

    ScienceCinema (OSTI)

    Stewert, Robin;

    2013-05-28

    INL scientists are doing their best to help solve our energy problems here on Earth. But did you know the lab is playing a key role in the exploration of other worlds, too? Meet INL Engineer Robin Stewart helps build and test generators that power NASA missions to Pluto and Mars. You can learn more about INL projects at http://www.facebook.com/idahonationallaboratory.

  5. Wind powering America: Vermont

    SciTech Connect (OSTI)

    NREL

    2000-04-11

    Wind resources in the state of Vermont show great potential for wind energy development according to the wind resource assessment conducted by the state, its utilities, and NREL. This fact sheet provides a brief description of the resource assessment and a link to the resulting wind resource map produced by NREL. The fact sheet also provides a description of the state's net metering program, its financial incentives, and green power programs as well as a list of contacts for more information.

  6. Stirling engine power control

    DOE Patents [OSTI]

    Fraser, James P. (Scotia, NY)

    1983-01-01

    A power control method and apparatus for a Stirling engine including a valved duct connected to the junction of the regenerator and the cooler and running to a bypass chamber connected between the heater and the cylinder. An oscillating zone of demarcation between the hot and cold portions of the working gas is established in the bypass chamber, and the engine pistons and cylinders can run cold.

  7. PowerPoint Presentation

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgram Guidelines This document w w

  8. PowerPoint Presentation

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgram Guidelines This document w

  9. PowerPoint Presentation

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeedingProgram Guidelines This document w1.

  10. PowerPoint Presentation

    Energy Savers [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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested PartiesBuilding energyDepartment ofof Energy ElectricPower

  11. PowerPoint Presentation

    Energy Savers [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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested PartiesBuilding energyDepartment ofof Energy ElectricPowerUniversity

  12. Electric Power Monthly

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansas Nuclear ProfileMultiferroic Electric Field

  13. A Sensemaking Perspective on Situation Awareness in Power Grid Operations

    SciTech Connect (OSTI)

    Greitzer, Frank L.; Schur, Anne; Paget, Mia L.; Guttromson, Ross T.

    2008-07-21

    With increasing complexity and interconnectivity of the electric power grid, the scope and complexity of grid operations continues to grow. New paradigms are needed to guide research to improve operations by enhancing situation awareness of operators. Research on human factors/situation awareness is described within a taxonomy of tools and approaches that address different levels of cognitive processing. While user interface features and visualization approaches represent the predominant focus of human factors studies of situation awareness, this paper argues that a complementary level, sensemaking, deserves further consideration by designers of decision support systems for power grid operations. A sensemaking perspective on situation aware-ness may reveal new insights that complement ongoing human factors research, where the focus of the investigation of errors is to understand why the decision makers experienced the situation the way they did, or why what they saw made sense to them at the time.

  14. GEOTHERMAL POWER GENERATION PLANT

    SciTech Connect (OSTI)

    Boyd, Tonya

    2013-12-01

    Oregon Institute of Technology (OIT) drilled a deep geothermal well on campus (to 5,300 feet deep) which produced 196oF resource as part of the 2008 OIT Congressionally Directed Project. OIT will construct a geothermal power plant (estimated at 1.75 MWe gross output). The plant would provide 50 to 75 percent of the electricity demand on campus. Technical support for construction and operations will be provided by OIT’s Geo-Heat Center. The power plant will be housed adjacent to the existing heat exchange building on the south east corner of campus near the existing geothermal production wells used for heating campus. Cooling water will be supplied from the nearby cold water wells to a cooling tower or air cooling may be used, depending upon the type of plant selected. Using the flow obtained from the deep well, not only can energy be generated from the power plant, but the “waste” water will also be used to supplement space heating on campus. A pipeline will be construction from the well to the heat exchanger building, and then a discharge line will be construction around the east and north side of campus for anticipated use of the “waste” water by facilities in an adjacent sustainable energy park. An injection well will need to be drilled to handle the flow, as the campus existing injection wells are limited in capacity.

  15. Powerful glow discharge excilamp

    DOE Patents [OSTI]

    Tarasenko, Victor F. (Tomsk, RU); Panchenko, Aleksey N. (Tomsk, RU); Skakun, Victor S. (Tomsk, RU); Sosnin, Edward A. (Tomsk, RU); Wang, Francis T. (Danville, CA); Myers, Booth R. (Livermore, CA); Adamson, Martyn G. (Danville, CA)

    2002-01-01

    A powerful glow discharge lamp comprising two coaxial tubes, the outer tube being optically transparent, with a cathode and anode placed at opposite ends of the tubes, the space between the tubes being filled with working gas. The electrodes are made as cylindrical tumblers placed in line to one other in such a way that one end of the cathode is inserted into the inner tube, one end of the anode coaxially covers the end of the outer tube, the inner tube penetrating and extending through the anode. The increased electrodes' surface area increases glow discharge electron current and, correspondingly, average radiation power of discharge plasma. The inner tube contains at least one cooling liquid tube placed along the axis of the inner tube along the entire lamp length to provide cathode cooling. The anode has a circumferential heat extracting radiator which removes heat from the anode. The invention is related to lighting engineering and can be applied for realization of photostimulated processes under the action of powerful radiation in required spectral range.

  16. Commercial nuclear power 1990

    SciTech Connect (OSTI)

    Not Available

    1990-09-28

    This report presents the status at the end of 1989 and the outlook for commercial nuclear capacity and generation for all countries in the world with free market economies (FME). The report provides documentation of the US nuclear capacity and generation projections through 2030. The long-term projections of US nuclear capacity and generation are provided to the US Department of Energy's (DOE) Office of Civilian Radioactive Waste Management (OCRWM) for use in estimating nuclear waste fund revenues and to aid in planning the disposal of nuclear waste. These projections also support the Energy Information Administration's annual report, Domestic Uranium Mining and Milling Industry: Viability Assessment, and are provided to the Organization for Economic Cooperation and Development. The foreign nuclear capacity projections are used by the DOE uranium enrichment program in assessing potential markets for future enrichment contracts. The two major sections of this report discuss US and foreign commercial nuclear power. The US section (Chapters 2 and 3) deals with (1) the status of nuclear power as of the end of 1989; (2) projections of nuclear capacity and generation at 5-year intervals from 1990 through 2030; and (3) a discussion of institutional and technical issues that affect nuclear power. The nuclear capacity projections are discussed in terms of two projection periods: the intermediate term through 2010 and the long term through 2030. A No New Orders case is presented for each of the projection periods, as well as Lower Reference and Upper Reference cases. 5 figs., 30 tabs.

  17. EA-1726: Kahuku Wind Power, LLC Wind Power Generation Facility...

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

    Us Offices May 3, 2010 EA-1726: Final Environmental Assessment Loan Guarantee to Kahuku Wind Power, LLC for Construction of the Kahuku Wind Power Facility in Kahuku, O'ahu,...

  18. Reliability Evaluation of Electric Power Generation Systems with Solar Power 

    E-Print Network [OSTI]

    Samadi, Saeed

    2013-11-08

    Conventional power generators are fueled by natural gas, steam, or water flow. These generators can respond to fluctuating load by varying the fuel input that is done by a valve control. Renewable power generators such as ...

  19. Magnetic machines and power electronics for power MEMS applications

    E-Print Network [OSTI]

    Das, Sauparna, 1979-

    2005-01-01

    This thesis presents the modeling, design, and characterization of microfabricated, surface-wound, permanent-magnet (PM) generators, and their power electronics, for use in Watt-level Power MEMS applications such as a ...

  20. Wind Power Today, 2010, Wind and Water Power Program (WWPP)

    SciTech Connect (OSTI)

    Not Available

    2010-05-01

    Wind Power Today is an annual publication that provides an overview of the wind energy research conducted by the U.S. Department of Energy Wind and Water Power Program.

  1. New Technologies Power Wearable Devices through Body Power or...

    Open Energy Info (EERE)

    New Technologies Power Wearable Devices through Body Power or the Environment Home > Groups > No Battery Wearables WikiSysop's picture Submitted by WikiSysop(15) Member 12 August,...

  2. POWERFUL AND POWERLESS: POWER RELATIONS IN SATYAJIT RAY'S FILMS

    E-Print Network [OSTI]

    Banerjee, Deb Kumar

    2009-12-17

    . The films are examined within the framework of Foucault's conception of power. Different roles and interpretations of power relationships between humans through kingship, class, caste, religion, gender, technology and knowledge are analyzed in the thesis...

  3. Contingency Analysis of Power System using Power Flow

    E-Print Network [OSTI]

    Lavaei, Javad

    and to minimize customer outages. i II. Motivation The security of a power grid into account. The other common causes of faults are weather related.0 ­ Typical Causes of Faults iii Source: Richard Brown. Electric Power Distribution

  4. Transmission rights and market power on electric power networks

    E-Print Network [OSTI]

    Joskow, Paul L.

    2000-01-01

    We analyze whether and how the allocation of transmission rights associated with the use of electric power networks affects the behavior of electricity generators and electricity consumers with market power. We consider ...

  5. SaskPower Small Power Producers Program (Saskatchewan, Canada)

    Broader source: Energy.gov [DOE]

    The Small Power Producers Program accommodates customers who wish to generate up to 100 kilowatts (kW) of electricity for the purpose of offsetting power that would otherwise be purchased from...

  6. EIS-0131: Initial Northwest Power Act Power Sales Contracts

    Broader source: Energy.gov [DOE]

    The Bonneville Power Administration prepared this EIS to analyze the environmental impact of power sales and residential exchange contracts and to explore if there is a need to seek changes to these contracts.

  7. High Power Coax Window

    SciTech Connect (OSTI)

    Neubauer, M. L.; Dudas, A.; Sah, R.; Elliott, T. S.; Rimmer, R. A.; Stirbet, M. S.

    2010-05-23

    A su­per­con­duct­ing RF (SRF) power cou­pler ca­pa­ble of han­dling 500 kW CW RF power is re­quired for pre­sent and fu­ture stor­age rings and linacs. There are over 35 cou­pler de­signs for SRF cav­i­ties rang­ing in fre­quen­cy from 325 to 1500 MHz. Cou­pler win­dows vary from cylin­ders to cones to disks, and RF power cou­plers are lim­it­ed by the abil­i­ty of ce­ram­ic win­dows to with­stand the stress­es due to heat­ing and me­chan­i­cal flex­ure. We pro­pose a novel ro­bust co-ax­i­al SRF cou­pler de­sign which uses com­pressed win­dow tech­nol­o­gy. This tech­nol­o­gy will allow the use of high­ly ther­mal­ly con­duc­tive ma­te­ri­als for cryo­genic win­dows. Using com­pressed win­dow tech­niques on disk co-ax­i­al win­dows will make sig­nif­i­cant im­prove­ments in the power han­dling of SRF cou­plers. We pre­sent the bench test re­sults of two win­dow as­sem­blies back to back, as well as in­di­vid­u­al win­dow VSWR in EIA3.125 coax. A vac­u­um test as­sem­bly was made and the win­dows baked out at 155C. The pro­cess­es used to build win­dows is scal­able to larg­er di­am­e­ter coax and to high­er power lev­els.

  8. Minimize oil field power consumption

    SciTech Connect (OSTI)

    Harris, B.; Ennis, P.

    1999-08-01

    Though electric power is a major operating cost of oil production, few producers have systematically evaluated their power consumption for ways to be more efficient. There is significant money to be saved by doing so, and now is a good time to make an evaluation because new power options are at hand. They range from small turbo generators that can run on casing head gas and power one or two lift pumps, to rebuilt major turbines and ram-jet powered generators that can be set in a multi-well field and deliver power at bargain prices. Power industry deregulation is also underway. Opportunities for more advantageous power contracts from competitive sources are not far off. This two-part series covers power efficiency and power options. This article reviews steps you can take to evaluate the efficiency of your power use and go about improving it. Part 2 will discuss opportunities for use of distributed power and changes you can expect from decentralized power.

  9. POWER SYSTEMS STABILITY WITH LARGE-SCALE WIND POWER PENETRATION

    E-Print Network [OSTI]

    Bak-Jensen, Birgitte

    of offshore wind farms, wind power fluctuations may introduce several challenges to reliable power system behaviour due to natural wind fluctuations. The rapid power fluctuations from the large scale wind farms Generation Control (AGC) system which includes large- scale wind farms for long-term stability simulation

  10. Virtualizing Power Cords by Wireless Power Transmission and Energy Harvesting

    E-Print Network [OSTI]

    Tentzeris, Manos

    existing wireless power transfer scheme, this method can deliver electric power over a wide range, there is a general need to remove the electrical cords from rooms at low cost. If the wireless communication different methods. The first approach routes electric power by wireless transfer on two-dimensional surfaces

  11. Power Consumption Prediction and Power-Aware Packing in Consolidated

    E-Print Network [OSTI]

    Urgaonkar, Bhuvan

    prediction and enforcement of appropriate limits on power consumption--power budgets--within the data center-term energy consumption within that level and 2) a sustained budget to capture any restrictions on sustained as the well-being of our environ- ment. Trends from such platforms suggest that the power consumption in data

  12. Introduction The electric power grid and electric power

    E-Print Network [OSTI]

    Introduction The electric power grid and electric power industry are undergoing a dramatic transforma- tion. By linking information technologies with the electric power grid--to provide "electricity the standards process that will allow the many pieces of "the world's largest and most complex machine" to work

  13. The Rise And Fall Of The Muslim Brotherhood In The Egyptian Revolution: The Interplay of Narrative And Other Factors

    E-Print Network [OSTI]

    Tombaugh, William

    2013-08-31

    This study examines the interplay of narrative and other factors in the rise and fall of the Muslim Brotherhood during the Egyptian Revolution. I hypothesize that narrative played a major role in the Muslim Brotherhoods rise to power...

  14. Wind Farm Power Maximization Based On A Cooperative Static Game Approach

    E-Print Network [OSTI]

    Stanford University

    Wind Farm Power Maximization Based On A Cooperative Static Game Approach Jinkyoo Parka, Soonduck efficiency of wind farms using cooperative control. The key factors in determining the power production and the loading for a wind turbine are the nacelle yaw and blade pitch angles. However, the nacelle and blade

  15. Environmental determinants of unscheduled residential outages in the electrical power distribution of Phoenix, Arizona

    E-Print Network [OSTI]

    Environmental determinants of unscheduled residential outages in the electrical power distribution: Distribution Electricity Interruption Outage Reliability a b s t r a c t The sustainability of power requires knowledge of unscheduled outage sources, including environ- mental and social factors. Despite

  16. The potential impacts of climate-change policy on freshwater use in thermoelectric power generation

    E-Print Network [OSTI]

    Jackson, Robert B.

    , such as wind turbines and solar photovoltaic sources, it may also promote the retrofitting of coal-fired power power plant is for the cooling system that condenses steam and carries away the waste heat as part of a Rankine steam cycle. The total water requirements of such a plant depend on a number of factors, including

  17. Optimal power flow application issues in the Pool paradigm George Grossa,*, Ettore Bompardb

    E-Print Network [OSTI]

    Gross, George

    a Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Power ramifications. These factors have wide ranging economic impacts, whose implications are very pronounced due consideration of some system performance measures into the steady state analysis of the power system. The basic

  18. Toward high output-power nanogenerator Peng Fei,1,2

    E-Print Network [OSTI]

    Wang, Zhong L.

    Toward high output-power nanogenerator Jin Liu,1 Peng Fei,1,2 Jun Zhou,1 Rao Tummala,1 and Zhong contributed by all of the NWs while the output voltage is determined by the voltage generated by a single NW 2008; published online 29 April 2008 In this paper, the factors that determine the power output

  19. Stochastic Behaviour of the Electricity Bid Stack: from Fundamental Drivers to Power Prices

    E-Print Network [OSTI]

    Howison, Sam

    Stochastic Behaviour of the Electricity Bid Stack: from Fundamental Drivers to Power Prices Michael) 23 October 2008 Abstract We develop a fundamental model for spot electricity prices, based on stochastic processes for underlying factors (fuel prices, power demand and generation capacity availability

  20. Increasing power generation for scaling up single-chamber air cathode microbial fuel cells

    E-Print Network [OSTI]

    power density was shown to be a linear function of cathode specific surface area (ratio of cathode is the most critical factor for scaling-up MFCs to obtain high power densities. Ó 2010 Elsevier Ltd. All potential as a tech- nology for sustainable bioenergy production due to their ability to generate

  1. Adaptive and Dynamic Wireless Routers with Smart Antenna for Power Management

    E-Print Network [OSTI]

    Krishnan, S Venkata; Kumar, N Senthil

    2012-01-01

    In the recent evolution of wireless technologies, the power management has been a worrying factor. In order to overcome the power shortage, steps are taken to find new kind of energy harvesting methods, power attenuation reduction methods and power saving techniques. Wireless routers even though consume not much of power, battery powered devices require a lot. Omni directional antenna embedded with multiple antennae focusing the beam of radio wave signals in the direction of nodes with least transmission angle can be a solution for this problem which is called as "Smart Antenna". To reduce power maceration we are going for adaptive and dynamic transmission wherein the transmission angle of antennae is varied in accordance with the movement of nodes. Apart from saving the power considerably, it also improves the signal strength

  2. Analysis of nuclear power plant construction costs

    SciTech Connect (OSTI)

    Not Available

    1986-01-01

    The objective of this report is to present the results of a statistical analysis of nuclear power plant construction costs and lead-times (where lead-time is defined as the duration of the construction period), using a sample of units that entered construction during the 1966-1977 period. For more than a decade, analysts have been attempting to understand the reasons for the divergence between predicted and actual construction costs and lead-times. More importantly, it is rapidly being recognized that the future of the nuclear power industry rests precariously on an improvement in the cost and lead-time situation. Thus, it is important to study the historical information on completed plants, not only to understand what has occurred to also to improve the ability to evaluate the economics of future plants. This requires an examination of the factors that have affected both the realized costs and lead-times and the expectations about these factors that have been formed during the construction process. 5 figs., 22 tabs.

  3. Markets for concentrating solar power

    SciTech Connect (OSTI)

    Not Available

    1998-04-01

    The report describes the markets for concentrating solar power. As concentrating solar power technologies advance into the early stages of commercialization, their economic potential becomes more sharply defined and increasingly tangible.

  4. Georgia Power- Solar Buyback Program

    Broader source: Energy.gov [DOE]

    Georgia Power, the state's largest utility, has established a green power program, that allows the company to purchase limited solar generation at a premium price based on other customers volunta...

  5. Reading File Bonneville Power Administration

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

    Reading File Bonneville Power Administration P.O. Box 3621 Portland, Oregon 97208-3621 POWER SERVICES In reply refer to: PG-5 Ms. Renata Kurschner Director, Generation Resource...

  6. Power from the Fuel Cell

    E-Print Network [OSTI]

    Lipman, Timothy E.

    2000-01-01

    Power for Buildings Using Fuel-Cell Cars,” Proceedings ofwell as to drive down fuel-cell system costs through productPower from the Fuel Cell BY TIMOTHY E. LIPMAN A U T O M O B

  7. Automotive Power Generation and Control

    E-Print Network [OSTI]

    Caliskan, Vahe

    This paper describes some new developments in the application of power electronics to automotive power generation and control. A new load-matching technique is introduced that uses a simple switched-mode rectifier to achieve ...

  8. Recover Power with Hydraulic Motors 

    E-Print Network [OSTI]

    Brennan, J. R.

    1982-01-01

    Anywhere liquid pressure is reduced across a throttling device, there is a potential application for a hydraulic power recovery motor (HPRM). Cost of power makes HPRM's attractive with recoveries as small as 25 hp on a continuous basis. When...

  9. Energy 101: Concentrating Solar Power

    Broader source: Energy.gov [DOE]

    From towers to dishes to linear mirrors to troughs, concentrating solar power (CSP) technologies reflect and collect solar heat to generate electricity. A single CSP plant can generate enough power...

  10. Vermont Power Exchange, a power broker for QF sales

    SciTech Connect (OSTI)

    Schuyler, S.A.

    1988-01-01

    A power broker to handle QF sales - this is the unique approach taken by the Vermont Public Service Board to implement the Federal PURPA rules. In 1983, the Vermont Public Service Board used its rule making power to create a central purchasing agent which would buy power from QFs and redistribute it to the state's retail electric companies. This function is performed by Vermont Power Exchange, Inc., which is a private company which operates the system under contract with the Board. The result of this approach is the pooling of power from QFs for distribution to the state's retail electric utilities.

  11. Environmental Assessment for power marketing policy for Southwestern Power Administration

    SciTech Connect (OSTI)

    Not Available

    1993-12-01

    Southwestern Power Administration (Southwestern) needs to renew expiring power sales contracts with new term (10 year) sales contracts. The existing contracts have been in place for several years and many will expire over the next ten years. Southwestern completed an Environmental Assessment on the existing power allocation in June, 1979 (a copy of the EA is attached), and there are no proposed additions of any major new generation resources, service to discrete major new loads, or major changes in operating parameters, beyond those included in the existing power allocation. Impacts from a no action plan, proposed alternative, and market power for less than 10 years are described.

  12. SCALE DRAM subsystem power analysis

    E-Print Network [OSTI]

    Bhalodia, Vimal

    2005-01-01

    To address the needs of the next generation of low-power systems, DDR2 SDRAM offers a number of low-power modes with various performance and power consumption tradeoffs. The SCALE DRAM Subsystem is an energy-aware DRAM ...

  13. Overview paper on nuclear power

    SciTech Connect (OSTI)

    Spiewak, I.; Cope, D.F.

    1980-09-01

    This paper was prepared as an input to ORNL's Strategic Planning Activity, ORNL National Energy Perspective (ONEP). It is intended to provide historical background on nuclear power, an analysis of the mission of nuclear power, a discussion of the issues, the technology choices, and the suggestion of a strategy for encouraging further growth of nuclear power.

  14. CONSTRUCTION OF NUCLEAR POWER PLANTS

    E-Print Network [OSTI]

    CONSTRUCTION OF NUCLEAR POWER PLANTS A Workshop on "NUCLEAR ENERGY RENAISSANCE" Addressing OF ST. LUCIE-2 at FLORIDA POWER & LIGHT COMPANY · Robert E. Uhrig 1974-1986 ­ Vice President, Nuclear IN CONSTRUCTION OF ST. LUCIE-2 #12;LESSONS LEARNED FROM St. Lucie-2 NUCLEAR POWER PLANTS CAN BE BUILT

  15. Introduction What is power electronics?

    E-Print Network [OSTI]

    Knobloch,Jürgen

    in Pressman, Billings and Morey [3]. Our design example ­ a switch mode power supply We look at the basic [4]. Switching power supplies, and isolated converters in particular, are extensively explained structure of a switching single phase AC/DC power supply, shown in Figure 1. A rectified AC voltage

  16. Wind Power Career Chat

    SciTech Connect (OSTI)

    L. Flowers

    2011-01-01

    This document will teach students about careers in the wind energy industry. Wind energy, both land-based and offshore, is expected to provide thousands of new jobs in the next several decades. Wind energy companies are growing rapidly to meet America's demand for clean, renewable, and domestic energy. These companies need skilled professionals. Wind power careers will require educated people from a variety of areas. Trained and qualified workers manufacture, construct, operate, and manage wind energy facilities. The nation will also need skilled researchers, scientists, and engineers to plan and develop the next generation of wind energy technologies.

  17. Clean Coal Power Initiative

    SciTech Connect (OSTI)

    Doug Bartlett; Rob James; John McDermott; Neel Parikh; Sanjay Patnaik; Camilla Podowski

    2006-03-31

    This report is the fifth quarterly Technical Progress Report submitted by NeuCo, Incorporated, under Award Identification Number, DE-FC26-04NT41768. This award is part of the Clean Coal Power Initiative (''CCPI''), the ten-year, $2B initiative to demonstrate new clean coal technologies in the field. This report is one of the required reports listed in Attachment B Federal Assistance Reporting Checklist, part of the Cooperative Agreement. The report covers the award period January 1, 2006 - March 31, 2006 and NeuCo's efforts within design, development, and deployment of on-line optimization systems during that period.

  18. Solar powered Stirling engine

    SciTech Connect (OSTI)

    Meijer, R.J.

    1987-11-24

    In a solar dish module which comprises a dish which receives incident solar rays and reflects them to a focus at which is located the combination of a receiver and a heat engine organized and arranged so that the heat energy of the reflected solar rays collected at the receiver powers the engine, and wherein the receiver and heat engine are supported from the dish by a framework, the improvement is described which comprises journal means for journaling at least the engine on the framework to maintain certain predetermined spatial orientation for the engine in relation to the direction of gravity irrespective of spatial orientation of the dish.

  19. Wireless adiabatic power transfer

    SciTech Connect (OSTI)

    Rangelov, A.A., E-mail: rangelov@phys.uni-sofia.bg [Department of Physics, Sofia University, James Bourchier 5 blvd., 1164 Sofia (Bulgaria); Suchowski, H.; Silberberg, Y. [Department of Physics of Complex System, Weizmann Institute of Science, Rehovot 76100 (Israel); Vitanov, N.V. [Department of Physics, Sofia University, James Bourchier 5 blvd., 1164 Sofia (Bulgaria)

    2011-03-15

    Research Highlights: > Efficient and robust mid-range wireless energy transfer between two coils. > The adiabatic energy transfer is analogous to adiabatic passage in quantum optics. > Wireless energy transfer is insensitive to any resonant constraints. > Wireless energy transfer is insensitive to noise in the neighborhood of the coils. - Abstract: We propose a technique for efficient mid-range wireless power transfer between two coils, by adapting the process of adiabatic passage for a coherently driven two-state quantum system to the realm of wireless energy transfer. The proposed technique is shown to be robust to noise, resonant constraints, and other interferences that exist in the neighborhood of the coils.

  20. Concentrating Solar Power

    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 Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram:Y-12Power,5Energy Works' Success OpensTRA51429 Vol.Jungle |