Sample records for hybrid system ii

  1. Elgersburg School 2014 Hybrid Systems

    E-Print Network [OSTI]

    Knobloch,Jürgen

    Elgersburg School 2014 Hybrid Systems Worksheet 2 Problem 1. Consider the hybrid system given by C) Is V1(x) = 1 2 x2 2 + x1 (which represents the total energy of the ball) a Lyapunov function verifying

  2. Programming Hybrid HPC Systems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah47,193.70 Hg Mercury 35InformationProgramming Hybrid HPC Systems

  3. Hypergeometric systems II: GKZ systems

    E-Print Network [OSTI]

    Uli Walther

    2010-09-27T23:59:59.000Z

    Solutions of A-hypergemetric systems. Hypergeometric systems II: GKZ systems ... Power series ansatz: z = ?. ? k=0 aktk shows ak ? vj >0 vj ?1. ? l=0.

  4. Global optimization of hybrid systems

    E-Print Network [OSTI]

    Lee, Cha Kun

    2006-01-01T23:59:59.000Z

    Systems that exhibit both discrete state and continuous state dynamics are called hybrid systems. In most nontrivial cases, these two aspects of system behavior interact to such a significant extent that they cannot be ...

  5. Hybrid spread spectrum radio system

    DOE Patents [OSTI]

    Smith, Stephen F. (London, TN) [London, TN; Dress, William B. (Camas, WA) [Camas, WA

    2010-02-09T23:59:59.000Z

    Systems and methods are described for hybrid spread spectrum radio systems. A method, includes receiving a hybrid spread spectrum signal including: fast frequency hopping demodulating and direct sequence demodulating a direct sequence spread spectrum signal, wherein multiple frequency hops occur within a single data-bit time and each bit is represented by chip transmissions at multiple frequencies.

  6. Hybrid powertrain system

    DOE Patents [OSTI]

    Grillo, Ricardo C.; O'Neil, Walter K.; Preston, David M.

    2005-09-20T23:59:59.000Z

    A hybrid powertrain system is provided that includes a first prime mover having a rotational output, a second prime mover having a rotational output, and a transmission having a main shaft supporting at least two main shaft gears thereon. The transmission includes a first independent countershaft drivingly connected to the first prime mover and including at least one ratio gear supported thereon that meshes with a respective main shaft gear. A second independent countershaft is drivingly connected to the second prime mover and includes at least one ratio gear supported thereon that meshes with a respective main shaft gear. The ratio gears on the first and second countershafts cooperate with the main shaft gears to provide at least one gear ratio between the first and second countershafts and the main shaft. A shift control mechanism selectively engages and disengages the first and second countershafts for rotation with the main shaft.

  7. Hybrid solar lighting distribution systems and components

    DOE Patents [OSTI]

    Muhs, Jeffrey D. (Lenoir City, TN); Earl, Dennis D. (Knoxville, TN); Beshears, David L. (Knoxville, TN); Maxey, Lonnie C. (Powell, TN); Jordan, John K. (Oak Ridge, TN); Lind, Randall F. (Lenoir City, TN)

    2011-07-05T23:59:59.000Z

    A hybrid solar lighting distribution system and components having at least one hybrid solar concentrator, at least one fiber receiver, at least one hybrid luminaire, and a light distribution system operably connected to each hybrid solar concentrator and each hybrid luminaire. A controller operates all components.

  8. Hybrid solar lighting systems and components

    DOE Patents [OSTI]

    Muhs, Jeffrey D. (Lenoir City, TN); Earl, Dennis D. (Knoxville, TN); Beshears, David L. (Knoxville, TN); Maxey, Lonnie C. (Powell, TN); Jordan, John K. (Oak Ridge, TN); Lind, Randall F. (Lenoir City, TN)

    2007-06-12T23:59:59.000Z

    A hybrid solar lighting system and components having at least one hybrid solar concentrator, at least one fiber receiver, at least one hybrid luminaire, and a light distribution system operably connected to each hybrid solar concentrator and each hybrid luminaire. A controller operates each component.

  9. Hybrid solar thermal-photovoltaic systems demonstration, Phase I and II. Final technical progress report, July 5, 1979-December 1982

    SciTech Connect (OSTI)

    Loferski, J.J. (ed.)

    1983-12-01T23:59:59.000Z

    The purpose of the project is to investigate a system based on combined photovoltaic/thermal (PV/T) panels to supply the energy needs of a small single family residence. The system finally selected and constructed uses PV/T panels which utilize air as the heat transfer medium. Optimization of thermal performance was accomplished by attaching metal fins to the back surface of each cell which significantly increased the heat transfer coefficient from the solar cells to the air stream. The other major components of the selected system are an air-to-air heat pump, a rock bin thermal energy storage bin, a synchronous dc-to-ac converter, a microprocessor to control the system, a heat exchanger for the domestic hot water system and of course the building itself which is a one story, well insulated structure having a floor area of 1200 ft/sup 2/. A prototype collector was constructed and tested. Based on this experience, twenty collectors, containing 2860 four inch diameter solar cells, were constructed and installed on the building. Performance of the system was simulated using a TRNSYS-derived program, modified to accommodate PV/T panels and to include the particular components included in the selected system. Simulation of the performance showed that about 65 percent of the total annual energy needs of the building would be provided by the PV/T system. Of this total, about one half is produced at a time when it can be used in the building and one half must be sold back to the utility.

  10. Solar Central Receiver Hybrid Power Systems sodium-cooled receiver concept. Final report. Volume II, Book 2. Conceptual design, Sections 5 and 6

    SciTech Connect (OSTI)

    None

    1980-01-01T23:59:59.000Z

    The overall, long-term objective of the Solar Central Receiver Hybrid Power System program is to identify, characterize, and ultimately demonstrate the viability and cost effectiveness of solar/fossil, steam Rankine cycle, hybrid power systems that: (1) consist of a combined solar central receiver energy source and a nonsolar energy source at a single, common site, (2) may operate in the base, intermediate, and peaking capacity modes, (3) produce the rated output independent of variations in solar insolation, (4) provide a significant savings (50% or more) in fuel consumption, and (5) produce power at the minimum possible cost in mills/kWh. It is essential that these hybrid concepts be technically feasible and economically competitive with other systems in the near to mid-term time period (1985-1990) on a commercial scale. The program objective for Phase I is to identify and conceptually characterize solar/fossil steam Rankine cycle, commercial-scale, power plant systems that are economically viable and technically feasible. This volume contains the detailed conceptual design and cost/performance estimates and an assessment of the commercial scale solar central receiver hybrid power system. (WHK)

  11. Distributed Theorem Proving for Distributed Hybrid Systems

    E-Print Network [OSTI]

    Platzer, André

    system with a varying number of arbitrarily many cars. 1 Introduction Hybrid systems with joint discrete a multi-agent system, e.g., distributed car control systems. Such systems form distributed hybrid systemsDistributed Theorem Proving for Distributed Hybrid Systems David W. Renshaw, Sarah M. Loos

  12. Vehicle Technologies Office: Hybrid and Vehicle Systems | Department...

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

    Hybrid and Vehicle Systems Vehicle Technologies Office: Hybrid and Vehicle Systems Hybrid and vehicle systems research provides an overarching vehicle systems perspective to the...

  13. Modeling and Analysis ofModeling and Analysis of Hybrid Control SystemsHybrid Control Systems

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    control systems, MOVEP, Bordeaux, 2006 Automatic gear boxAutomatic gear box #12;Karl H. Johansson, HybridModeling and Analysis ofModeling and Analysis of Hybrid Control SystemsHybrid Control Systems Karl.kth.se/~kallej MOVEP 2006, Bordeaux, France Karl H. Johansson, Hybrid control systems, MOVEP, Bordeaux

  14. Hybrid powertrain system

    DOE Patents [OSTI]

    Hughes, Douglas A.

    2006-08-01T23:59:59.000Z

    A powertrain system is provided that includes a first prime mover and change-gear transmission having a first input shaft and a second input shaft. A twin clutch is disposed between the first prime mover and the transmission. The twin clutch includes a first main clutch positioned between the first prime mover and the first input shaft and a second main clutch positioned between the first prime mover and the second input shaft. The powertrain system also includes a second prime mover operably connected to one of the first and second input shafts.

  15. Hybrid powertrain system

    SciTech Connect (OSTI)

    Hughes, Douglas A. (Wixom, MI)

    2007-09-25T23:59:59.000Z

    A powertrain system is provided that includes a first prime mover and change-gear transmission having a first input shaft and a second input shaft. A twin clutch is disposed between the first prime mover and the transmission. The twin clutch includes a first main clutch positioned between the first prime mover and the first input shaft and a second main clutch positioned between the first prime mover and the second input shaft. The powertrain system also includes a second prime mover operably connected to one of the first and second input shafts.

  16. A verification framework for hybrid systems

    E-Print Network [OSTI]

    Mitra, Sayan

    2007-01-01T23:59:59.000Z

    Combining; discrete state transitions with differential equations, Hybrid system models provide an expressive formalism for describing software systems that interact with a physical environment. Automatically checking ...

  17. Hybrid Radiator Cooling System | Argonne National Laboratory

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

    Radiator Cooling System Technology available for licensing: Hybrid radiator cooling system uses conventional finned air cooling under most driving conditions that would be...

  18. Hybrid chirped pulse amplification system

    DOE Patents [OSTI]

    Barty, Christopher P.; Jovanovic, Igor

    2005-03-29T23:59:59.000Z

    A hybrid chirped pulse amplification system wherein a short-pulse oscillator generates an oscillator pulse. The oscillator pulse is stretched to produce a stretched oscillator seed pulse. A pump laser generates a pump laser pulse. The stretched oscillator seed pulse and the pump laser pulse are directed into an optical parametric amplifier producing an optical parametric amplifier output amplified signal pulse and an optical parametric amplifier output unconverted pump pulse. The optical parametric amplifier output amplified signal pulse and the optical parametric amplifier output laser pulse are directed into a laser amplifier producing a laser amplifier output pulse. The laser amplifier output pulse is compressed to produce a recompressed hybrid chirped pulse amplification pulse.

  19. Hybrid spread spectrum radio system

    DOE Patents [OSTI]

    Smith, Stephen F. (London, TN); Dress, William B. (Camas, WA)

    2010-02-02T23:59:59.000Z

    Systems and methods are described for hybrid spread spectrum radio systems. A method includes modulating a signal by utilizing a subset of bits from a pseudo-random code generator to control an amplification circuit that provides a gain to the signal. Another method includes: modulating a signal by utilizing a subset of bits from a pseudo-random code generator to control a fast hopping frequency synthesizer; and fast frequency hopping the signal with the fast hopping frequency synthesizer, wherein multiple frequency hops occur within a single data-bit time.

  20. Sensitivity analysis of oscillating hybrid systems

    E-Print Network [OSTI]

    Saxena, Vibhu Prakash

    2010-01-01T23:59:59.000Z

    Many models of physical systems oscillate periodically and exhibit both discrete-state and continuous-state dynamics. These systems are called oscillating hybrid systems and find applications in diverse areas of science ...

  1. System for controlling a hybrid energy system

    DOE Patents [OSTI]

    Hoff, Brian D.; Akasam, Sivaprasad

    2013-01-29T23:59:59.000Z

    A method includes identifying a first operating sequence of a repeated operation of at least one non-traction load. The method also includes determining first and second parameters respectively indicative of a requested energy and output energy of the at least one non-traction load and comparing the determined first and second parameters at a plurality of time increments of the first operating sequence. The method also includes determining a third parameter of the hybrid energy system indicative of energy regenerated from the at least one non-traction load and monitoring the third parameter at the plurality of time increments of the first operating sequence. The method also includes determining at least one of an energy deficiency or an energy surplus associated with the non-traction load of the hybrid energy system and selectively adjusting energy stored within the storage device during at least a portion of a second operating sequence.

  2. Dynamic Analysis of Hybrid Energy Systems under Flexible Operation and Variable Renewable Generation -- Part I: Dynamic Performance Analysis and Part II: Dynamic Cost

    SciTech Connect (OSTI)

    Humberto E. Garcia; Amit Mohanty; Wen-Chiao Lin; Robert S. Cherry

    2013-04-01T23:59:59.000Z

    Dynamic analysis of hybrid energy systems (HES) under flexible operation and variable renewable generation is considered in order to better understand various challenges and opportunities associated with the high system variability arising from the integration of renewable energy into the power grid. Unique consequences are addressed by devising advanced HES solutions in which multiple forms of energy commodities, such as electricity and chemical products, may be exchanged. Dynamic models of various unit operations are developed and integrated within two different HES options. One HES option, termed traditional, produces electricity only and consists of a primary heat generator (PHG) (e.g., a small modular reactor), a steam turbine generator, a wind farm, and a battery storage. The other HES option, termed advanced, includes not only the components present in the traditional option but also a chemical plant complex to repurpose excess energy for non-electricity services, such as for the production of chemical goods (e.g., transportation fuel). In either case, a given HES is connected to the power grid at a point of common coupling and requested to deliver a certain electricity generation profile as dictated by a regional power grid operator based on a predicted demand curve. Dynamic analysis of these highly-coupled HES are performed to identify their key dynamical properties and limitations and to prescribe solutions for best managing and mitigating the high variability introduced from incorporating renewable energy into the energy mix. A comparative dynamic cost analysis is also conducted to determine best HES options. The cost function includes a set of metrics for computing fixed costs, such as fixed operations and maintenance (O&M) and overnight capital costs, and also variable operational costs, such as cost of variability, variable O&M cost, and cost of environmental impact, together with revenues. Assuming different options for implementing PHG (e.g., natural gas, coal, nuclear), preliminary results identify the level of renewable penetration at which a given advanced HES option (e.g., a nuclear hybrid) becomes increasingly more economical than a traditional electricity-only generation solution. Conditions are also revealed under which carbon resources may be better utilized as carbon sources for chemical production rather than as combustion material for electricity generation.

  3. Advanced, Energy-Efficient Hybrid Membrane System for Industrial...

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

    Advanced, Energy-Efficient Hybrid Membrane System for Industrial Water Reuse Advanced, Energy-Efficient Hybrid Membrane System for Industrial Water Reuse hybridmembranesystemsfa...

  4. 2014 Annual Merit Review Results Report - Hybrid Vehicle Systems...

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

    Hybrid Vehicle Systems Technologies 2014 Annual Merit Review Results Report - Hybrid Vehicle Systems Technologies Merit review of DOE Vehicle Technologies research activities...

  5. 2012 Annual Merit Review Results Report - Hybrid Vehicle Systems...

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

    Hybrid Vehicle Systems Technologies 2012 Annual Merit Review Results Report - Hybrid Vehicle Systems Technologies Merit review of DOE Vehicle Technologies research activities...

  6. Advanced Methods Approach to Hybrid Powertrain Systems Optimization...

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

    Methods Approach to Hybrid Powertrain Systems Optimization of a Transit Bus Application Advanced Methods Approach to Hybrid Powertrain Systems Optimization of a Transit Bus...

  7. acid hybrid system: Topics by E-print Network

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

    Because the discrete part of a hybrid system 107 Series Parallel Hybrid VSC-LCC for HVdc Transmission Systems. Open Access Theses and Dissertations Summary: ??This thesis...

  8. Powertrain system for a hybrid electric vehicle

    DOE Patents [OSTI]

    Reed, R.G. Jr.; Boberg, E.S.; Lawrie, R.E.; Castaing, F.J.

    1999-08-31T23:59:59.000Z

    A hybrid electric powertrain system is provided including an electric motor/generator drivingly engaged with the drive shaft of a transmission. The electric is utilized for synchronizing the rotation of the drive shaft with the driven shaft during gear shift operations. In addition, a mild hybrid concept is provided which utilizes a smaller electric motor than typical hybrid powertrain systems. Because the electric motor is drivingly engaged with the drive shaft of the transmission, the electric motor/generator is driven at high speed even when the vehicle speed is low so that the electric motor/generator provides more efficient regeneration. 34 figs.

  9. Powertrain system for a hybrid electric vehicle

    DOE Patents [OSTI]

    Reed, Jr., Richard G. (Royal Oak, MI); Boberg, Evan S. (Hazel Park, MI); Lawrie, Robert E. (Whitmore Lake, MI); Castaing, Francois J. (Bloomfield Township, MI)

    1999-08-31T23:59:59.000Z

    A hybrid electric powertrain system is provided including an electric motor/generator drivingly engaged with the drive shaft of a transmission. The electric is utilized for synchronizing the rotation of the drive shaft with the driven shaft during gear shift operations. In addition, a mild hybrid concept is provided which utilizes a smaller electric motor than typical hybrid powertrain systems. Because the electric motor is drivingly engaged with the drive shaft of the transmission, the electric motor/generator is driven at high speed even when the vehicle speed is low so that the electric motor/generator provides more efficient regeneration.

  10. Analysis of Hybrid Hydrogen Systems: Final Report

    SciTech Connect (OSTI)

    Dean, J.; Braun, R.; Munoz, D.; Penev, M.; Kinchin, C.

    2010-01-01T23:59:59.000Z

    Report on biomass pathways for hydrogen production and how they can be hybridized to support renewable electricity generation. Two hybrid systems were studied in detail for process feasibility and economic performance. The best-performing system was estimated to produce hydrogen at costs ($1.67/kg) within Department of Energy targets ($2.10/kg) for central biomass-derived hydrogen production while also providing value-added energy services to the electric grid.

  11. Formal Verification of Hybrid Systems Rajeev Alur

    E-Print Network [OSTI]

    Alur, Rajeev

    -1-4503-0714-7/11/10 ...$5.00. mathematical model for design of embedded control systems is hybrid systems that combines for dynamical systems. Such models can capture both the controller -- the system under design, and the plant@cis.upenn.edu ABSTRACT In formal verification, a designer first constructs a model, with mathematically precise semantics

  12. Webinar: Systems Performance Advancement II Funding Opportunity...

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

    Webinar: Systems Performance Advancement II Funding Opportunity Announcement Webinar: Systems Performance Advancement II Funding Opportunity Announcement January 22, 2015 2:00PM to...

  13. Electron-State Hybridization in Heavy-Fermion Systems

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

    Electron-State Hybridization in Heavy-Fermion Systems Electron-State Hybridization in Heavy-Fermion Systems Print Wednesday, 27 September 2006 00:00 Heavy-fermion systems are...

  14. Electronic coupling in organic-inorganic semiconductor hybrid structures with type-II energy level alignment

    E-Print Network [OSTI]

    Peters, Achim

    Electronic coupling in organic-inorganic semiconductor hybrid structures with type-II energy level Electronic coupling in a hybrid structure made of ZnMgO and a spirobifluorene derivative SP6 is inves- tigated in the situation where the energy level alignment at the organic/inorganic interface revealed

  15. Control system for a hybrid powertrain system

    DOE Patents [OSTI]

    Naqvi, Ali K.; Demirovic, Besim; Gupta, Pinaki; Kaminsky, Lawrence A.

    2014-09-09T23:59:59.000Z

    A vehicle includes a powertrain with an engine, first and second torque machines, and a hybrid transmission. A method for operating the vehicle includes operating the engine in an unfueled state, releasing an off-going clutch which when engaged effects operation of the hybrid transmission in a first continuously variable mode, and applying a friction braking torque to a wheel of the vehicle to compensate for an increase in an output torque of the hybrid transmission resulting from releasing the off-going clutch. Subsequent to releasing the off-going clutch, an oncoming clutch which when engaged effects operation of the hybrid transmission in a second continuously variable mode is synchronized. Subsequent to synchronization of the oncoming clutch, the oncoming clutch is engaged.

  16. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--II: EXPRESS BRIEFS, VOL. 59, NO. 8, AUGUST 2012 491 A 6-Gbit/s Hybrid Voltage-Mode Transmitter With

    E-Print Network [OSTI]

    Palermo, Sam

    equalization to compensate for channel frequency-dependent loss are required to meet the aggressive link energy in electrical channel loss characteristics [1], the ability to efficiently include some transmit equalization-efficiency targets of future systems. This brief presents an LP serial-link-transmitter design that utilizes

  17. Hybrid Molten Salt Reactor (HMSR) System Study

    SciTech Connect (OSTI)

    Woolley, Robert D [PPPL; Miller, Laurence F [PPPL

    2014-04-01T23:59:59.000Z

    Can the hybrid system combination of (1) a critical fission Molten Salt Reactor (MSR) having a thermal spectrum and a high Conversion Ratio (CR) with (2) an external source of high energy neutrons provide an attractive solution to the world's expanding demand for energy? The present study indicates the answer is an emphatic yes.

  18. Hybrid Energy System Modeling in Modelica

    SciTech Connect (OSTI)

    William R. Binder; Christiaan J. J. Paredis; Humberto E. Garcia

    2014-03-01T23:59:59.000Z

    In this paper, a Hybrid Energy System (HES) configuration is modeled in Modelica. Hybrid Energy Systems (HES) have as their defining characteristic the use of one or more energy inputs, combined with the potential for multiple energy outputs. Compared to traditional energy systems, HES provide additional operational flexibility so that high variability in both energy production and consumption levels can be absorbed more effectively. This is particularly important when including renewable energy sources, whose output levels are inherently variable, determined by nature. The specific HES configuration modeled in this paper include two energy inputs: a nuclear plant, and a series of wind turbines. In addition, the system produces two energy outputs: electricity and synthetic fuel. The models are verified through simulations of the individual components, and the system as a whole. The simulations are performed for a range of component sizes, operating conditions, and control schemes.

  19. Verifying Hybrid Systems Modeled as Timed Automata: A Case Study?

    E-Print Network [OSTI]

    -Vaandrager timed automata model, of the Steam Boiler Controller problem, a hybrid systems benchmark. This pa- per

  20. Modeling and Analysis of Hybrid Systems Hybrid systems and their modeling

    E-Print Network [OSTI]

    Ábrahám, Erika

    17 22 23 t on off Hybrid Ábrahám - Hybrid Systems 6 / 41 #12;Example: Water tank system two a heater on and off x is regulated by a thermostat: 17 x 18 "heater on" 22 x 23 "heater off" t x 20 18 constantly leaking tanks v1 and v2 hose w refills exactly one tank at one point in time w can switch between

  1. Optimal Control of Switched Hybrid Systems: A Brief Survey

    E-Print Network [OSTI]

    Antsaklis, Panos

    Optimal Control of Switched Hybrid Systems: A Brief Survey Technical Report of the ISIS Group FengZhu and Panos J. Antsaklis, "Optimal Control of Switched Hybrid Systems: a Brief Survey," ISIS Technical Report ISIS-2013-007, July 2013. #12;1 Optimal Control of Switched Hybrid Systems: A Brief Survey

  2. Optimal Control of Switched Hybrid Systems: A Brief Survey

    E-Print Network [OSTI]

    Antsaklis, Panos

    Optimal Control of Switched Hybrid Systems: A Brief Survey Technical Report of the ISIS Group;1 Optimal Control of Switched Hybrid Systems: A Brief Survey Abstract This paper surveys recent results in the field of optimal control of hybrid and switched systems. We summarize recent results that use different

  3. Optimal Control of Switched Hybrid Systems: A Brief Survey

    E-Print Network [OSTI]

    Antsaklis, Panos

    Optimal Control of Switched Hybrid Systems: A Brief Survey Technical Report of the ISIS Group;1 Optimal Control of Switched Hybrid Systems: A Brief Survey Feng Zhu and Panos J. Antsaklis Department a few. The problem of determining optimal control laws for hybrid systems and in particular for switched

  4. Quadratic Control of Stochastic Hybrid Systems with Renewal Transitions

    E-Print Network [OSTI]

    Hespanha, João Pedro

    Quadratic Control of Stochastic Hybrid Systems with Renewal Transitions Farshad R. Pour Safaei a, semi-Markov processes, optimal control, stochastic hybrid systems, renewal transitions 1 Introduction probability distributions other than the exponential. We consider a Stochastic Hybrid System with renewal

  5. APPLICATIONS OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS TO

    E-Print Network [OSTI]

    APPLICATIONS OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS TO BUILDINGS AND BRIDGE DECKS. By MAHADEVAN Chapter Page 1. Introduction 1.1. Overview of hybrid ground source heat pump systems 1.2. Literature review 1.3. Thesis objective and scope 2. Optimal sizing of hybrid ground source heat pump system

  6. Continuous flow Systems and Control Methodology Using Hybrid Petri nets

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    modeling tool of positive systems, while Hybrid Automata are a powerful tool giving formally the reachable is based on the control of a hybrid system modelled by a D-elementary hybrid Petri Net. The control is maximally permissive. 1. INTRODUCTION Modelling and control of physical systems are crucial issues

  7. A CLASSIFICATION SCHEME FOR THE COMMON PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS

    E-Print Network [OSTI]

    Holtz, Michael J.

    2011-01-01T23:59:59.000Z

    Common Passive and Hybrid Heating Cooling Systems Michael].THE COMMON PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS

  8. Hybrid Heuristics for Optimizing Energy Consumption in Embedded Systems

    E-Print Network [OSTI]

    Schott, René - Institut de Mathématiques �lie Cartan, Université Henri Poincaré

    Hybrid Heuristics for Optimizing Energy Consumption in Embedded Systems Maha IDRISSI AOUAD1 , Ren energy reduction becomes crucial for many embed- ded systems designers. In this paper, we propose Hybrid to BEH). Keywords: Energy consumption reduction, Genetic algorithms, hybrid heuristics, memory allocation

  9. Benefits of battery-uItracapacitor hybrid energy storage systems

    E-Print Network [OSTI]

    Smith, Ian C., S.M. (Ian Charles). Massachusetts Institute of Technology

    2012-01-01T23:59:59.000Z

    This thesis explores the benefits of battery and battery-ultracapacitor hybrid energy storage systems (ESSs) in pulsed-load applications. It investigates and quantifies the benefits of the hybrid ESS over its battery-only ...

  10. Bachelor Thesis Detection of Zeno Sets in Hybrid Systems

    E-Print Network [OSTI]

    Bachelor Thesis Detection of Zeno Sets in Hybrid Systems to Validate Modelica Simulations Marcel . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 Example: Water Tank . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Modelica 9 3.1 OpenModelica . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1.1 Hybrid Automata

  11. Electron-State Hybridization in Heavy-Fermion Systems

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

    Electron-State Hybridization in Heavy-Fermion Systems Print Heavy-fermion systems are characterized by electrons with extremely large effective masses. The corresponding...

  12. Reachability Analysis of Stochastic Hybrid Systems: A Biodiesel Production System

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    Reachability Analysis of Stochastic Hybrid Systems: A Biodiesel Production System Derek Riley problem because it provides a formal framework to analyze complex systems. Biodiesel production is a realistic biochemical process that can be modeled and analyzed using SHS methods. Analysis of a biodiesel

  13. From 1D Chain to 3D Network: Tuning Hybrid II-VI Nanostructures and Their Optical Properties

    E-Print Network [OSTI]

    Li, Jing

    and synthesized a family of novel organic-inorganic hybrid nanocomposites based on II-VI semiconductorsFrom 1D Chain to 3D Network: Tuning Hybrid II-VI Nanostructures and Their Optical Properties of these nanocomposite materials have been characterized by single crystal and/or powder X-ray diffraction methods. [Zn

  14. hybrid vehicle systems | netl.doe.gov

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron4 Self-Scrubbing:,, , .,Shreve; University67Hybrid and Vehicle Systems

  15. Advanced, Energy-Efficient Hybrid Membrane System for Industrial...

    Energy Savers [EERE]

    (1 slide) Project Objective Develop and demonstrate advanced hybrid industrial water treatment system that will... Cost-effectively enable at least 50% water reuse...

  16. 2008 DOE Annual Merit Review Hybrid and Electric Systems and...

    Energy Savers [EERE]

    Materials Technologies Plenary Session Overview 2008 DOE Annual Merit Review Hybrid and Electric Systems and Materials Technologies Plenary Session Overview Presentation from the...

  17. 2013 Annual Merit Review Results Report - Hybrid Vehicle Systems...

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

    2013 Annual Merit Review Results Report 2012 Annual Merit Review Results Report - Hybrid Vehicle Systems Technologies 2012 Annual Merit Review Results Report - Introduction...

  18. Nuclear Hybrid Energy Systems: Challenges and Opportunities

    SciTech Connect (OSTI)

    P. Sabharwall; S.B. Sitton; S.J. Yoon; C. Stoots

    2014-07-01T23:59:59.000Z

    With growing demand of energy and costs of the fossil fuels, coupled with the environmental concerns have resulted in an increased interest in alternative energy sources. Nuclear hybrid energy systems (NHES) are being considered which incorporates renewable energy sources such as solar and wind energy combined with nuclear reactor and energy storage to meet the peak hours demand imposed on the grid, along with providing process heat for other potential industrial applications. This concept could potentially satisfy various energy demands and improve reliability, robustness and resilience for the entire system as a whole, along with economic and net efficiency gains. This paper provides a brief understanding of potential NHES system and architecture along with the challenges

  19. STABILIZING SUPERVISORY CONTROL OF HYBRID SYSTEMS BASED ON PIECEWISE LINEAR

    E-Print Network [OSTI]

    Antsaklis, Panos

    STABILIZING SUPERVISORY CONTROL OF HYBRID SYSTEMS BASED ON PIECEWISE LINEAR LYAPUNOV FUNCTIONS1 Lyapunov func- tions. In particular, we consider discrete-time switched linear systems. The control problem of discrete-time piecewise linear hybrid systems is in- vestigated using piecewise linear Lyapunov functions

  20. PIECEWISE AFFINE SYSTEMS CONTROLLABILITY AND HYBRID OPTIMAL CONTROL

    E-Print Network [OSTI]

    Rondepierre, Aude

    PIECEWISE AFFINE SYSTEMS CONTROLLABILITY AND HYBRID OPTIMAL CONTROL Aude Rondepierre Laboratoire de.Rondepierre@imag.fr Keywords: Piecewise affine hybrid systems, polyhedral sets, controllability, optimal control synthesis difficulty is actually the synthesis of optimal feedback, even not solved for linear systems, except in some

  1. OBSERVED HYBRID OSCILLATIONS IN AN ELECTRICAL DISTRIBUTION SYSTEM Vaibhav Donde

    E-Print Network [OSTI]

    . 1 therefore provide an example of a hybrid limit cycle.1 Analysis of power system large disturbance-changing transformers and switched capacitors. Analysis required a hybrid systems framework, due to the non from usual power system oscillations [1]: 1) behav- iour was quite non-smooth, and 2) the oscillation

  2. A CLASSIFICATION SCHEME FOR THE COMMON PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS

    E-Print Network [OSTI]

    Holtz, Michael J.

    2011-01-01T23:59:59.000Z

    and Hybrid Heating Cooling Systems Michael]. Holtz, WayneHYBRID HEATING AND COOLING SYSTEMS Michael J. Holtz Solarspace heating and cooling systems. It is based upon the mode

  3. Lyapunov-Like Conditions for the Existence of Zeno Behavior in Hybrid and Lagrangian Hybrid Systems

    E-Print Network [OSTI]

    Ames, Aaron

    Lyapunov-Like Conditions for the Existence of Zeno Behavior in Hybrid and Lagrangian Hybrid Systems Andrew Lamperski and Aaron D. Ames Abstract-- Lyapunov-like conditions that utilize generaliza- tions configuration space, we utilize our Lyapunov-like conditions to obtain easily verifiable necessary

  4. Comparison of Hybrid Systems and Fluid Stochastic Petri Nets \\Lambda

    E-Print Network [OSTI]

    Tuffin, Bruno

    Comparison of Hybrid Systems and Fluid Stochastic Petri Nets \\Lambda Bruno Tuffin , Dong S. Chen Engineering Duke University, Durham, NC 27708­0291, U.S.A. Abstract. Hybrid Systems are models of interacting digital and continuous devices with applications in the control of aircraft, computers, or modern cars

  5. A CLASSIFICATION SCHEME FOR THE COMMON PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS

    E-Print Network [OSTI]

    Holtz, Michael J.

    2011-01-01T23:59:59.000Z

    Passive and Hybrid Heating Cooling Systems Michael]. Holtz,PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS Michael J.of passive and hybrid space heating and cooling systems are

  6. Analytical energy spectrum for hybrid mechanical systems

    E-Print Network [OSTI]

    Honghua Zhong; Qiongtao Xie; Xiwen Guan; Murray T. Batchelor; Kelin Gao; Chaohong Lee

    2013-11-07T23:59:59.000Z

    We investigate the energy spectrum for hybrid mechanical systems described by non-parity-symmetric quantum Rabi models. A set of analytical solutions in terms of the confluent Heun functions and their analytical energy spectrum are obtained. The analytical energy spectrum includes regular and exceptional parts, which are both confirmed by direct numerical simulation. The regular part is determined by the zeros of the Wronskian for a pair of analytical solutions. The exceptional part is relevant to the isolated exact solutions and its energy eigenvalues are obtained by analyzing the truncation conditions for the confluent Heun functions. By analyzing the energy eigenvalues for exceptional points, we obtain the analytical conditions for the energy-level-crossings, which correspond to two-fold energy degeneracy.

  7. Nuclear Hybrid Energy System Modeling: RELAP5 Dynamic Coupling Capabilities

    SciTech Connect (OSTI)

    Piyush Sabharwall; Nolan Anderson; Haihua Zhao; Shannon Bragg-Sitton; George Mesina

    2012-09-01T23:59:59.000Z

    The nuclear hybrid energy systems (NHES) research team is currently developing a dynamic simulation of an integrated hybrid energy system. A detailed simulation of proposed NHES architectures will allow initial computational demonstration of a tightly coupled NHES to identify key reactor subsystem requirements, identify candidate reactor technologies for a hybrid system, and identify key challenges to operation of the coupled system. This work will provide a baseline for later coupling of design-specific reactor models through industry collaboration. The modeling capability addressed in this report focuses on the reactor subsystem simulation.

  8. Performance of hybrid quad generation system consisting of solid oxide fuel cell system and

    E-Print Network [OSTI]

    Liso, Vincenzo

    Performance of hybrid quad generation system consisting of solid oxide fuel cell system. Keywords: Energy system modeling, Solid oxide fuel cell, Absorption heat pump. 1. Introduction 1

  9. Coupling from the Past in Hybrid Models for File Sharing Peer to Peer Systems

    E-Print Network [OSTI]

    Boyer, Edmond

    Coupling from the Past in Hybrid Models for File Sharing Peer to Peer Systems Bruno Gaujal1 systems can be modeled by hybrid systems with a continuous part corresponding to a fluid limit of files of sto- chastic hybrid systems. 1 Introduction Hybrid systems are very useful to model discrete systems

  10. AT GUANTANAMO BAY: A HYBRID WIND-DIESEL SYSTEM

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND POWER AT GUANTANAMO BAY: A HYBRID WIND-DIESEL SYSTEM FOR THE US NAVY AT GUANTANAMO NAVAL BASE Laboratory and are actively developing what will be the world's largest wind-diesel hybrid electric plant. The pending installation of four 950-kW wind turbines to supplement the 22.8 MW diesel electricity plant

  11. Proton corebeam system in the expanding solar wind: Hybrid simulations

    E-Print Network [OSTI]

    California at Berkeley, University of

    Proton corebeam system in the expanding solar wind: Hybrid simulations Petr Hellinger1,2 and Pavel 9 November 2011. [1] Results of a twodimensional hybrid expanding box simulation of a proton to a decrease of the ratio between the proton perpendicular and parallel temperatures as well as to an increase

  12. Battery control system for hybrid vehicle and method for controlling a hybrid vehicle battery

    DOE Patents [OSTI]

    Bockelmann, Thomas R. (Battle Creek, MI); Hope, Mark E. (Marshall, MI); Zou, Zhanjiang (Battle Creek, MI); Kang, Xiaosong (Battle Creek, MI)

    2009-02-10T23:59:59.000Z

    A battery control system for hybrid vehicle includes a hybrid powertrain battery, a vehicle accessory battery, and a prime mover driven generator adapted to charge the vehicle accessory battery. A detecting arrangement is configured to monitor the vehicle accessory battery's state of charge. A controller is configured to activate the prime mover to drive the generator and recharge the vehicle accessory battery in response to the vehicle accessory battery's state of charge falling below a first predetermined level, or transfer electrical power from the hybrid powertrain battery to the vehicle accessory battery in response to the vehicle accessory battery's state of charge falling below a second predetermined level. The invention further includes a method for controlling a hybrid vehicle powertrain system.

  13. IDetachable, Human-Rated, Ablative Environmentally Compliant TPSLunar Surface Systems 2008 Phase II

    E-Print Network [OSTI]

    Systems 2008 Phase II Proposal X8.01-8631 Lightweight Hybrid Ablator Incorporating Aerogel-Filled Open skeleton filled with a high temperature nanoscale aerogel insulator. Structural integrity and high insulation behavior have been demonstrated when used in combination with a non-ablating, coated carbon

  14. The assessment of battery-ultracapacitor hybrid energy storage systems

    E-Print Network [OSTI]

    He, Yiou

    2014-01-01T23:59:59.000Z

    Battery-ultracapacitors hybrid energy storage systems (ESS) could combine the high power density and high life cycle of ultracapacitors with the high energy density of batteries, which forms a promising energy storage ...

  15. A CLASSIFICATION SCHEME FOR THE COMMON PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS

    E-Print Network [OSTI]

    Holtz, Michael J.

    2011-01-01T23:59:59.000Z

    system also incorporates mechanical devices to move energy, then the sys tern is classified as hybrid. *

  16. Optimal Controllers for Hybrid Systems: Stability and Piecewise Linear Explicit Form

    E-Print Network [OSTI]

    Sontag, Eduardo

    of the heat exchange system [16] shows the potential of the method. Keywords: Hybrid systems, model predictiveOptimal Controllers for Hybrid Systems: Stability and Piecewise Linear Explicit Form A. Bemporad for hybrid sys- tems and investigate conditions for closed-loop stabil- ity. Hybrid systems are modeled

  17. Advanced topics in control systems theory II

    E-Print Network [OSTI]

    Nesic, Dragan

    Advanced topics in control systems theory II Lecture notes from FAP 2005 Editors: Antonio Lor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 1.8.2 Inverted Pendulum.4 The desired energy function Hd with kv = 0. . . . . . . . . . . . . . . . . . 32 1.5 Closed-loop responses

  18. Hybrid Vapor Compression Adsorption System: Thermal Storage Using Hybrid Vapor Compression Adsorption System

    SciTech Connect (OSTI)

    None

    2012-01-04T23:59:59.000Z

    HEATS Project: UTRC is developing a new climate-control system for EVs that uses a hybrid vapor compression adsorption system with thermal energy storage. The targeted, closed system will use energy during the battery-charging step to recharge the thermal storage, and it will use minimal power to provide cooling or heating to the cabin during a drive cycle. The team will use a unique approach of absorbing a refrigerant on a metal salt, which will create a lightweight, high-energy-density refrigerant. This unique working pair can operate indefinitely as a traditional vapor compression heat pump using electrical energy, if desired. The project will deliver a hot-and-cold battery that provides comfort to the passengers using minimal power, substantially extending the driving range of EVs.

  19. VISUAL DESCRIPTION OF HYBRID SYSTEMS Radu Grosu, Thomas Stauner1

    E-Print Network [OSTI]

    may be fatal in the safety critical environment of many hybrid systems. In this paper we present-time systems interacting with their physical environment. In the past few years a number of formalisms have height control system (EHC), taken from a former case study together with BMW. The purpose of this system

  20. Extending the lifetime of fuel cell based hybrid systems

    E-Print Network [OSTI]

    Jianli Zhuo; Chaitali Chakrabarti; Naehyuck Chang; Sarma Vrudhula

    2006-01-01T23:59:59.000Z

    Fuel cells are clean power sources that have much higher energy densities and lifetimes compared to batteries. However, fuel cells have limited load following capabilities and cannot be efficiently utilized if used in isolation. In this work, we consider a hybrid system where a fuel cell based hybrid power source is used to provide power to a DVFS processor. The hybrid power source consists of a room temperature fuel cell operating as the primary power source and a Li-ion battery (that has good load following capability) operating as the secondary source. Our goal is to develop polices to extend the lifetime of the fuel cell based hybrid system. First, we develop a charge based optimization framework which minimizes the charge loss of the hybrid system (and not the energy consumption of the DVFS processor). Next, we propose a new algorithm to minimize the charge loss by judiciously scaling the load current. We compare the performance of this algorithm with one that has been optimized for energy, and demonstrate its superiority. Finally, we evaluate the performance of the hybrid system under different system configurations and show how to determine the best combination of fuel cell size and battery capacity for a given embedded application.

  1. Energy-Efficient Building HVAC Control Using Hybrid System LBMPC

    E-Print Network [OSTI]

    Aswani, Anil; Taneja, Jay; Krioukov, Andrew; Culler, David; Tomlin, Claire

    2012-01-01T23:59:59.000Z

    Improving the energy-efficiency of heating, ventilation, and air-conditioning (HVAC) systems has the potential to realize large economic and societal benefits. This paper concerns the system identification of a hybrid system model of a building-wide HVAC system and its subsequent control using a hybrid system formulation of learning-based model predictive control (LBMPC). Here, the learning refers to model updates to the hybrid system model that incorporate the heating effects due to occupancy, solar effects, outside air temperature (OAT), and equipment, in addition to integrator dynamics inherently present in low-level control. Though we make significant modeling simplifications, our corresponding controller that uses this model is able to experimentally achieve a large reduction in energy usage without any degradations in occupant comfort. It is in this way that we justify the modeling simplifications that we have made. We conclude by presenting results from experiments on our building HVAC testbed, which s...

  2. Model Reduction Near Periodic Orbits of Hybrid Dynamical Systems

    E-Print Network [OSTI]

    Sastry, S. Shankar

    manipulation in manufacturing [2], gene regulation in cells [3], and power generation in electrical systems [41 Model Reduction Near Periodic Orbits of Hybrid Dynamical Systems Samuel A. Burden, Shai Revzen system. We demonstrate reduction of a high­dimensional underactuated mechanical model for terrestrial

  3. Hybrid Renewable Energy Systems for a Dynamically Positioned Buoy

    E-Print Network [OSTI]

    Wood, Stephen L.

    of the vessel and environmental conditions, power requirements for DP tend to be quite substantial and costly of powering a low cost, simple, dynamic positioning system. This system was implemented on a dynamically a theoretical hybrid renewable energy system to power it, thereby improving on the station keeping buoy (SKB

  4. Reachability Analysis of a Biodiesel Production System Using Stochastic Hybrid Systems

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    Reachability Analysis of a Biodiesel Production System Using Stochastic Hybrid Systems Derek Riley defines the creation of biodiesel from soybean oil and methanol. Modeling and analyzing the biodiesel. In this paper we model a biodiesel production system as a stochastic hybrid system, and we present

  5. Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation

    SciTech Connect (OSTI)

    Faress Rahman; Nguyen Minh

    2004-01-04T23:59:59.000Z

    This report summarizes the work performed by Hybrid Power Generation Systems, LLC (HPGS) during the July 2003 to December 2003 reporting period under Cooperative Agreement DE-FC26-01NT40779 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL) entitled ''Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation''. The main objective of this project is to develop and demonstrate the feasibility of a highly efficient hybrid system integrating a planar Solid Oxide Fuel Cell (SOFC) and a micro-turbine. In addition, an activity included in this program focuses on the development of an integrated coal gasification fuel cell system concept based on planar SOFC technology. Also, another activity included in this program focuses on the development of SOFC scale up strategies.

  6. Hydrogen atom as a quantum-classical hybrid system

    E-Print Network [OSTI]

    Fei Zhan; Biao Wu

    2013-02-15T23:59:59.000Z

    Hydrogen atom is studied as a quantum-classical hybrid system, where the proton is treated as a classical object while the electron is regarded as a quantum object. We use a well known mean-field approach to describe this hybrid hydrogen atom; the resulting dynamics for the electron and the proton is compared to their full quantum dynamics. The electron dynamics in the hybrid description is found to be only marginally different from its full quantum counterpart. The situation is very different for the proton: in the hybrid description, the proton behaves like a free particle; in the fully quantum description, the wave packet center of the proton orbits around the center of mass. Furthermore, we find that the failure to describe the proton dynamics properly can be regarded as a manifestation of the fact that there is no conservation of momentum in the mean-field hybrid approach. We expect that such a failure is a common feature for all existing approaches for quantum-classical hybrid systems of Born-Oppenheimer type.

  7. CGMurphi: Automatic Synthesis of Numerical Controllers for Nonlinear Hybrid Systems

    E-Print Network [OSTI]

    Tronci, Enrico

    CGMurphi: Automatic Synthesis of Numerical Controllers for Nonlinear Hybrid Systems Giuseppe Della, thus much work is being done to create automatic controller synthesis tools. When dealing with critical systems, most of the times such controllers are required to be optimal and robust, i.e., they must achieve

  8. On the Fokker-Planck Equation for Stochastic Hybrid Systems

    E-Print Network [OSTI]

    Boyer, Edmond

    a natural framework for power sys- tems modeling and control, since it allows to simultaneously capture both in the field of power systems can be found in [6]. More generally, such models appear in various applicationOn the Fokker-Planck Equation for Stochastic Hybrid Systems: Application to a Wind Turbine Model

  9. Diagnosis of Hybrid Systems with SMT: Opportunities and Challenges

    E-Print Network [OSTI]

    Grastien, Alban

    Diagnosis of Hybrid Systems with SMT: Opportunities and Challenges Alban Grastien1 Abstract. We of the system are asked and translated into Satisfiability Modulo Theory (SMT) problems, which are then solved by an SMT solver. We show the reduction to SMT. We also discuss the benefits and the drawbacks

  10. VALUE-ADDED SIMULATION OF HYBRID SYSTEMS Ian A. Hiskens

    E-Print Network [OSTI]

    Hiskens, Ian A.

    of real-world, hybrid dynamical systems are technically challenging. Con- sequently, simulation plays- sidered in Section 5. Conclusions are provided in Section 6. 2 Model Systems that exhibit intrinsic, 2000) that these specifications can be met by a model that consists of a set of differential

  11. STOCHASTIC HYBRID SYSTEMS WITH RENEWAL TRANSITIONS: MOMENT ANALYSIS WITH APPLICATION TO

    E-Print Network [OSTI]

    Hespanha, João Pedro

    STOCHASTIC HYBRID SYSTEMS WITH RENEWAL TRANSITIONS: MOMENT ANALYSIS WITH APPLICATION TO NETWORKED motivated us to refer to these systems as Stochastic Hybrid Systems with Renewal Transitions. This class Stochastic Hybrid Systems (SHSs) for which the lengths of times that the system stays in each mode

  12. HybridPlan: A Capacity Planning Technique for Projecting Storage Requirements in Hybrid Storage Systems

    SciTech Connect (OSTI)

    Kim, Youngjae [ORNL] [ORNL; Gupta, Aayush [IBM Corporation, Almaden Research Center] [IBM Corporation, Almaden Research Center; Urgaonkar, Bhuvan [Pennsylvania State University] [Pennsylvania State University; Piotr, Berman [Pennsylvania State University, University Park, PA] [Pennsylvania State University, University Park, PA; Sivasubramaniam, Anand [Pennsylvania State University] [Pennsylvania State University

    2014-01-01T23:59:59.000Z

    Economic forces, driven by the desire to introduce flash into the high-end storage market without changing existing software-base, have resulted in the emergence of solid-state drives (SSDs), flash packaged in HDD form factors and capable of working with device drivers and I/O buses designed for HDDs. Unlike the use of DRAM for caching or buffering, however, certain idiosyncrasies of NAND Flash-based solid-state drives (SSDs) make their integration into hard disk drive (HDD)-based storage systems nontrivial. Flash memory suffers from limits on its reliability, is an order of magnitude more expensive than the magnetic hard disk drives (HDDs), and can sometimes be as slow as the HDD (due to excessive garbage collection (GC) induced by high intensity of random writes). Given the complementary properties of HDDs and SSDs in terms of cost, performance, and lifetime, the current consensus among several storage experts is to view SSDs not as a replacement for HDD, but rather as a complementary device within the high-performance storage hierarchy. Thus, we design and evaluate such a hybrid storage system with HybridPlan that is an improved capacity planning technique to administrators with the overall goal of operating within cost-budgets. HybridPlan is able to find the most cost-effective hybrid storage configuration with different types of SSDs and HDDs

  13. A Hybrid Authentication and Authorization Process for Control System Networks

    SciTech Connect (OSTI)

    Manz, David O.; Edgar, Thomas W.; Fink, Glenn A.

    2010-08-25T23:59:59.000Z

    Convergence of control system and IT networks require that security, privacy, and trust be addressed. Trust management continues to plague traditional IT managers and is even more complex when extended into control system networks, with potentially millions of entities, a mission that requires 100% availability. Yet these very networks necessitate a trusted secure environment where controllers and managers can be assured that the systems are secure and functioning properly. We propose a hybrid authentication management protocol that addresses the unique issues inherent within control system networks, while leveraging the considerable research and momentum in existing IT authentication schemes. Our hybrid authentication protocol for control systems provides end device to end device authentication within a remote station and between remote stations and control centers. Additionally, the hybrid protocol is failsafe and will not interrupt communication or control of vital systems in a network partition or device failure. Finally, the hybrid protocol is resilient to transitory link loss and can operate in an island mode until connectivity is reestablished.

  14. Integrated Hybrid-Simulation of Electric Power and Communications Systems

    SciTech Connect (OSTI)

    Nutaro, James J [ORNL; Kuruganti, Phani Teja [ORNL; Miller, Laurie E [ORNL; Mullen, Sara [ORNL; Shankar, Mallikarjun [ORNL

    2007-01-01T23:59:59.000Z

    The modern power grid is strongly integrated with its communication network. While a power system primarily consists of elements that are modeled by continuous equations, a communication system has discrete event dynamics. We model the integrated operation of these two systems with a hybrid modeling and simulation technique. Systematically combining continuous and discrete event system models is necessary for correctly simulating critical system behaviors. This paper discusses an approach based on the discrete event system specification (DEVS) that characterizes the interaction of the two systems formally to preserve simulation correctness. We demonstrate the implementation of our integrated hybrid simulation technique with detailed generator and network models in a wide-area cooperative automatic load-control scenario.

  15. PAMPA II Advanced Charting System

    E-Print Network [OSTI]

    Inbarajan, Prabhu Anand

    2004-09-30T23:59:59.000Z

    where the project is heading, and if needed, then look into the finer level details by drilling down to locate and correct problems. The objective of this thesis is to build an Advanced Charting System (ACS), which would act as a companion to PAMPA 2...

  16. Hybrid sodium heat pipe receivers for dish/Stirling systems

    SciTech Connect (OSTI)

    Laing, D.; Reusch, M. [Deutsche Forschungsanstalt fuer Luft- und Raumfahrt e.V., Stuttgart (Germany). Inst. fuer Technische Thermodynamik

    1997-12-31T23:59:59.000Z

    The design of a hybrid solar/gas heat pipe receiver for the SBP 9 kW dish/Stirling system using a United Stirling AB V160 Stirling engine and the results of on-sun testing in alternative and parallel mode will be reported. The receiver is designed to transfer a thermal power of 35 kW. The heat pipe operates at around 800 C, working fluid is sodium. Operational options are solar-only, gas augmented and gas-only mode. Also the design of a second generation hybrid heat pipe receiver currently developed under a EU-funded project, based on the experience gained with the first hybrid receiver, will be reported. This receiver is designed for the improved SPB/L. and C.-10 kW dish/Stirling system with the reworked SOLO V161 Stirling engine.

  17. Verification and Validation of Hybrid Systems

    E-Print Network [OSTI]

    Jin, Xiaoqing

    2013-01-01T23:59:59.000Z

    thermostat is an automatic control system to regulate indoorthe speed, the automatic transmission control system decideshybrid systems. Automatic Control, IEEE Transactions on, 43(

  18. Stochastic Hybrid Systems with Renewal Transitions Duarte Antunes, Jo~ao P. Hespanha, and Carlos Silvestre

    E-Print Network [OSTI]

    Hespanha, João Pedro

    Stochastic Hybrid Systems with Renewal Transitions Duarte Antunes, Jo~ao P. Hespanha, and Carlos], which motivated us to refer to these systems as stochastic hybrid systems with renewal transitions Silvestre Abstract-- We consider Stochastic Hybrid Systems (SHSs) for which the lengths of times

  19. Approximate model checking of stochastic hybrid systems , J.-P. Katoen

    E-Print Network [OSTI]

    Abate, Alessandro

    -room heating system. 1 Introduction Stochastic hybrid systems are a broad and widely applicable classApproximate model checking of stochastic hybrid systems A. Abate , J.-P. Katoen , J. Lygeros , and M. Prandini§ Abstract A method for approximate model checking of stochastic hybrid systems

  20. A Stochastic Dynamic Principle for Hybrid Systems with Execution Delay and Decision Lags

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    energy source), is written as a hybrid dynamical system and the associated optimization problem in the hybrid optimal control framework. The hybrid optimal control problem includes two important physical optimal control problem in this hybrid framework alongside a stochastic dynamic programming principle

  1. Hybrid two fuel system nozzle with a bypass connecting the two fuel systems

    DOE Patents [OSTI]

    Varatharajan, Balachandar (Cincinnati, OH); Ziminsky, Willy Steve (Simpsonville, SC); Yilmaz, Ertan (Albany, NY); Lacy, Benjamin (Greer, SC); Zuo, Baifang (Simpsonville, SC); York, William David (Greer, SC)

    2012-05-29T23:59:59.000Z

    A hybrid fuel combustion nozzle for use with natural gas, syngas, or other types of fuels. The hybrid fuel combustion nozzle may include a natural gas system with a number of swozzle vanes and a syngas system with a number of co-annular fuel tubes.

  2. Laser Inertial Fusion-based Energy: Neutronic Design Aspects of a Hybrid Fusion-Fission Nuclear Energy System

    E-Print Network [OSTI]

    Kramer, Kevin James

    2010-01-01T23:59:59.000Z

    aspects of a hybrid fusion-fission energy system called theof a Hybrid Fusion-Fission Nuclear Energy System by Kevinof a Hybrid Fusion-Fission Nuclear Energy System by Kevin

  3. Development of Integrated Motor Assist Hybrid System: Development of the 'Insight', a Personal Hybrid Coupe

    SciTech Connect (OSTI)

    Kaoru Aoki; Shigetaka Kuroda; Shigemasa Kajiwara; Hiromitsu Sato; Yoshio Yamamoto

    2000-06-19T23:59:59.000Z

    This paper presents the technical approach used to design and develop the powerplant for the Honda Insight, a new motor assist hybrid vehicle with an overall development objective of just half the fuel consumption of the current Civic over a wide range of driving conditions. Fuel consumption of 35km/L (Japanese 10-15 mode), and 3.4L/100km (98/69/EC) was realized. To achieve this, a new Integrated Motor Assist (IMA) hybrid power plant system was developed, incorporating many new technologies for packaging and integrating the motor assist system and for improving engine thermal efficiency. This was developed in combination with a new lightweight aluminum body with low aerodynamic resistance. Environmental performance goals also included the simultaneous achievement of low emissions (half the Japanese year 2000 standards, and half the EU2000 standards), high efficiency, and recyclability. Full consideration was also given to key consumer attributes, including crash safety performance, handling, and driving performance.

  4. Method and apparatus for controlling hybrid powertrain system in response to engine temperature

    DOE Patents [OSTI]

    Martini, Ryan D; Spohn, Brian L; Lehmen, Allen J; Cerbolles, Teresa L

    2014-10-07T23:59:59.000Z

    A method for controlling a hybrid powertrain system including an internal combustion engine includes controlling operation of the hybrid powertrain system in response to a preferred minimum coolant temperature trajectory for the internal combustion engine.

  5. Hybrid Fuel Cell / Gas Turbine Systems Auxiliary Power Unit

    E-Print Network [OSTI]

    Mease, Kenneth D.

    Hybrid Fuel Cell / Gas Turbine Systems Auxiliary Power Unit Abstract Recent interest in fuel cell fuel cell (SOFC) and fuel processor models have been developed and incorporated into the Numerical performance with experimental data is presented to demonstrate model validity. Introduction Fuel cell

  6. Modeling and Validating Hybrid Systems Using VDM and Mathematica

    E-Print Network [OSTI]

    of the state changes discretely, the other part changes continuously over time. Typically, modern control interface and data animation. 1 Introduction Modern control applications are realized throughModeling and Validating Hybrid Systems Using VDM and Mathematica Bernhard K. Aichernig and Reinhold

  7. SOLID OXIDE FUEL CELL HYBRID SYSTEM FOR DISTRIBUTED POWER GENERATION

    SciTech Connect (OSTI)

    Kurt Montgomery; Nguyen Minh

    2003-08-01T23:59:59.000Z

    This report summarizes the work performed by Honeywell during the October 2001 to December 2001 reporting period under Cooperative Agreement DE-FC26-01NT40779 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL) entitled ''Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation''. The main objective of this project is to develop and demonstrate the feasibility of a highly efficient hybrid system integrating a planar Solid Oxide Fuel Cell (SOFC) and a turbogenerator. The conceptual and demonstration system designs were proposed and analyzed, and these systems have been modeled in Aspen Plus. Work has also started on the assembly of dynamic component models and the development of the top-level controls requirements for the system. SOFC stacks have been fabricated and performance mapping initiated.

  8. Energy Storage System Considerations for Grid-Charged Hybrid Electric Vehicles (Presentation)

    SciTech Connect (OSTI)

    Markel, T.; Simpson, A.

    2005-09-01T23:59:59.000Z

    Provides an overview of a study regarding energy storage system considerations for a plug-in hybrid electric vehicle.

  9. Neural Network Based Energy Storage System Modeling for Hybrid Electric Vehicles

    SciTech Connect (OSTI)

    Bhatikar, S. R.; Mahajan, R. L.; Wipke, K.; Johnson, V.

    1999-08-01T23:59:59.000Z

    Demonstrates the application of an artificial neural network (ANN) for modeling the energy storage system of a hybrid electric vehicle.

  10. Interchange Format for Hybrid Systems: Abstract Semantics

    E-Print Network [OSTI]

    Carloni, Luca

    used by the algorithms. Modelica, for instance, pro- vides a language for describing systems in terms

  11. HYBRID GROUND SOURCE HEAT PUMP SYSTEM SIMULATION USING VISUAL MODELING TOOL FOR HVACSIM+

    E-Print Network [OSTI]

    HYBRID GROUND SOURCE HEAT PUMP SYSTEM SIMULATION USING VISUAL MODELING TOOL FOR HVACSIM+ M.H. Khan, 74078, USA ABSTRACT This paper presents a simulation of a hybrid ground source heat pump system, performed using a new graphical user interface for HVACSIM+. Hybrid ground source heat pump systems

  12. A Hybrid Energy System Using Cascaded H-bridge Converter , Zhong Du2

    E-Print Network [OSTI]

    Tolbert, Leon M.

    A Hybrid Energy System Using Cascaded H-bridge Converter Hui Li1 , Zhong Du2 , Kaiyu Wang1 , Leon M proposes a hybrid energy system to integrate the variable-speed wind turbine, fuel cell, and battery using generation, storage, and transmission. The power from hybrid energy systems can be combined on the dc side

  13. Design and Implementation of a Hybrid Energy Supply System for Railway Vehicles

    E-Print Network [OSTI]

    Elsässer, Robert

    - 1 - Design and Implementation of a Hybrid Energy Supply System for Railway Vehicles R. Li, A of Paderborn, Germany Abstract- An energy supply system based on a hybrid energy storage unit combined. In this contribution, a hybrid energy supply system based on battery and ultracapacitor is designed and implemented

  14. Energy Management System for an Hybrid Electric Vehicle, Using Ultracapacitors and Neural Networks

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    Energy Management System for an Hybrid Electric Vehicle, Using Ultracapacitors and Neural Networks and specific energy contained in most electric batteries compared to that of gasoline, is resolved in hybrid to accept energy from regenerative braking. For this reason, hybrid systems use an auxiliary energy system

  15. ENERGY MODELING OF A LEAD-ACID BATTERY WITHIN HYBRID WIND / PHOTOVOLTAIC SYSTEMS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ENERGY MODELING OF A LEAD-ACID BATTERY WITHIN HYBRID WIND / PHOTOVOLTAIC SYSTEMS O. GERGAUD, G Abstract: Within the scope of full-scale energy modeling of a hybrid wind / photovoltaic system coupled-power hybrid wind/photovoltaic production system (20 ASE modules for a 2- kW polycrystalline silicon peak

  16. Nuclear-renewable hybrid energy systems: Opportunities, interconnections, and needs

    SciTech Connect (OSTI)

    Mark F. Ruth; Owen R. Zinaman; Mark Antkowiak; Richard D. Boardman; Robert S. Cherry; Morgan D. Bazilian

    2014-02-01T23:59:59.000Z

    As the U.S. energy system evolves, the amount of electricity from variable-generation sources is likely to increase, which could result in additional times when electricity demand is lower than available production. Thus, purveyors of technologies that traditionally have provided base-load electricity—such as nuclear power plants—can explore new operating procedures to deal with the associated market signals. Concurrently, innovations in nuclear reactor design coupled with sophisticated control systems now allow for more complex apportionment of heat within an integrated system such as one linked to energy-intensive chemical processes. This paper explores one opportunity – nuclear-renewable hybrid energy systems. These are defined as integrated facilities comprised of nuclear reactors, renewable energy generation, and industrial processes that can simultaneously address the need for grid flexibility, greenhouse gas emission reductions, and optimal use of investment capital. Six aspects of interaction (interconnections) between elements of nuclear-renewable hybrid energy systems are identified: Thermal, electrical, chemical, hydrogen, mechanical, and information. Additionally, system-level aspects affect selection, design, and operation of this hybrid system type. Throughout the paper, gaps and research needs are identified to promote further exploration of the topic.

  17. Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation

    SciTech Connect (OSTI)

    David Deangelis; Rich Depuy; Debashis Dey; Georgia Karvountzi; Nguyen Minh; Max Peter; Faress Rahman; Pavel Sokolov; Deliang Yang

    2004-09-30T23:59:59.000Z

    This report summarizes the work performed by Hybrid Power Generation Systems, LLC (HPGS) during the April to October 2004 reporting period in Task 2.3 (SOFC Scaleup for Hybrid and Fuel Cell Systems) under Cooperative Agreement DE-FC26-01NT40779 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL), entitled ''Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation''. This study analyzes the performance and economics of power generation systems for central power generation application based on Solid Oxide Fuel Cell (SOFC) technology and fueled by natural gas. The main objective of this task is to develop credible scale up strategies for large solid oxide fuel cell-gas turbine systems. System concepts that integrate a SOFC with a gas turbine were developed and analyzed for plant sizes in excess of 20 MW. A 25 MW plant configuration was selected with projected system efficiency of over 65% and a factory cost of under $400/kW. The plant design is modular and can be scaled to both higher and lower plant power ratings. Technology gaps and required engineering development efforts were identified and evaluated.

  18. Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation

    SciTech Connect (OSTI)

    Nguyen Minh

    2002-03-31T23:59:59.000Z

    This report summarizes the work performed by Honeywell during the January 2002 to March 2002 reporting period under Cooperative Agreement DE-FC26-01NT40779 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL) entitled ''Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation''. The main objective of this project is to develop and demonstrate the feasibility of a highly efficient hybrid system integrating a planar Solid Oxide Fuel Cell (SOFC) and a turbogenerator. For this reporting period the following activities have been carried out: {lg_bullet} Conceptual system design trade studies were performed {lg_bullet} System-level performance model was created {lg_bullet} Dynamic control models are being developed {lg_bullet} Mechanical properties of candidate heat exchanger materials were investigated {lg_bullet} SOFC performance mapping as a function of flow rate and pressure was completed

  19. Nuclear Hybrid Energy Systems: Molten Salt Energy Storage

    SciTech Connect (OSTI)

    P. Sabharwall; M. Green; S.J. Yoon; S.M. Bragg-Sitton; C. Stoots

    2014-07-01T23:59:59.000Z

    With growing concerns in the production of reliable energy sources, the next generation in reliable power generation, hybrid energy systems, are being developed to stabilize these growing energy needs. The hybrid energy system incorporates multiple inputs and multiple outputs. The vitality and efficiency of these systems resides in the energy storage application. Energy storage is necessary for grid stabilizing and storing the overproduction of energy to meet peak demands of energy at the time of need. With high thermal energy production of the primary nuclear heat generation source, molten salt energy storage is an intriguing option because of its distinct properties. This paper will discuss the different energy storage options with the criteria for efficient energy storage set forth, and will primarily focus on different molten salt energy storage system options through a thermodynamic analysis

  20. Battery control system for hybrid vehicle and method for controlling a hybrid vehicle battery

    DOE Patents [OSTI]

    Bockelmann, Thomas R. (Battle Creek, MI); Beaty, Kevin D. (Kalamazoo, MI); Zou, Zhanijang (Battle Creek, MI); Kang, Xiaosong (Battle Creek, MI)

    2009-07-21T23:59:59.000Z

    A battery control system for controlling a state of charge of a hybrid vehicle battery includes a detecting arrangement for determining a vehicle operating state or an intended vehicle operating state and a controller for setting a target state of charge level of the battery based on the vehicle operating state or the intended vehicle operating state. The controller is operable to set a target state of charge level at a first level during a mobile vehicle operating state and at a second level during a stationary vehicle operating state or in anticipation of the vehicle operating in the stationary vehicle operating state. The invention further includes a method for controlling a state of charge of a hybrid vehicle battery.

  1. SOLID OXIDE FUEL CELL HYBRID SYSTEM FOR DISTRIBUTED POWER GENERATION

    SciTech Connect (OSTI)

    Unknown

    2002-03-01T23:59:59.000Z

    This report summarizes the work performed by Honeywell during the July 2001 to September 2001 reporting period under Cooperative Agreement DE-FC26-01NT40779 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL) entitled ''Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation''. The main objective of this project is to develop and demonstrate the feasibility of a highly efficient hybrid system integrating a planar Solid Oxide Fuel Cell (SOFC) and a turbogenerator. An internal program kickoff was held at Honeywell in Torrance, CA. The program structure was outlined and the overall technical approach for the program was presented to the team members. Detail program schedules were developed and detailed objectives were defined. Initial work has begun on the system design and pressurized SOFC operation.

  2. Time series modeling of autonomous hybrid power systems

    SciTech Connect (OSTI)

    Quinlan, P.J.; Beckman, W.A.; Mitchell, J.W.; Klein, S.A.; Blair, N.J. [Univ. of Wisconsin, Madison, WI (United States). Solar Energy Lab.

    1997-12-31T23:59:59.000Z

    The Solar Energy Laboratory (SEL) has developed a wind diesel PV hybrid systems simulator, UW-HYBRID 1.0, as an application of the TRNSYS 14.2 time-series simulation environment. The simulator provides a customizable user interface. The simulation provides an AC/DC buss, diesel generators, wind turbines, PV modules, a battery bank, and power converter. PV system simulations include solar angle and peak power tracking options. Diesel simulations include estimated fuel-use and waste heat output, and are dispatched using a least-cost of fuel strategy. Wind system simulations include varying air density, wind shear and wake effects. Time step duration is user-selectable. This paper provides a description of the simulation models and example output.

  3. Multiobjective Search for the Management of a Hybrid Energy Storage System

    E-Print Network [OSTI]

    Paderborn, Universität

    Multiobjective Search for the Management of a Hybrid Energy Storage System Simon Boxnick, Stefan Kl objective search algorithm. The algorithm is designed for the management of a hybrid energy storage module-board hybrid energy storage system (HES) of the novel autonomous rail-bound vehicle RailCab developed

  4. Periodically Controlled Hybrid Systems Verifying A Controller for An Autonomous Vehicle

    E-Print Network [OSTI]

    Murray, Richard M.

    Periodically Controlled Hybrid Systems Verifying A Controller for An Autonomous Vehicle Tichakorn Hybrid Au- tomata (PCHA) for describing a class of hybrid control systems. In a PCHA, control actions of the planner-controller subsystem of an autonomous ground vehicle, and in deriving geometric properties

  5. Robust execution for stochastic hybrid systems

    E-Print Network [OSTI]

    Blackmore, Lars James Christopher

    2007-01-01T23:59:59.000Z

    Unmanned systems, such as Autonomous Underwater Vehicles (AUVs), planetary rovers and space probes, have enormous potential in areas such as reconnaissance and space exploration. However the effectiveness and robustness ...

  6. Modeling and analysis of hybrid geothermal-solar thermal energy conversion systems

    E-Print Network [OSTI]

    Greenhut, Andrew David

    2010-01-01T23:59:59.000Z

    Innovative solar-geothermal hybrid energy conversion systems were developed for low enthalpy geothermal resources augmented with solar energy. The goal is to find cost-effective hybrid power cycles that take advantage of ...

  7. Physics of Aquatic Systems II, 6. Tritium Universitt HeidelbergInstitut fr Umweltphysik Physics of Aquatic Systems II

    E-Print Network [OSTI]

    Aeschbach-Hertig, Werner

    Physics of Aquatic Systems II, 6. Tritium Universität HeidelbergInstitut für Umweltphysik 1 Physics of Aquatic Systems II ­ 6. Tritium Werner Aeschbach-Hertig Institute of Environmental Physics University of Heidelberg Physics of Aquatic Systems II, 6. Tritium Universität HeidelbergInstitut für Umweltphysik 2

  8. The CDMS II data acquisition system

    SciTech Connect (OSTI)

    Bauer, D.A.; /Fermilab; Burke, S.; /UC, Santa Barbara; Cooley, J.; /Southern Methodist U.; Crisler, M.; /Fermilab; Cushman, P.; /Minnesota U.; DeJongh, F.; /Fermilab; Duong, L.; /Minnesota U.; Ferril, R.; /UC, Santa Barbara; Golwala, S.R.; /Caltech; Hall, J.; /Fermilab; Holmgren, D.; /Fermilab /Texas A-M; ,

    2011-01-01T23:59:59.000Z

    The Data Acquisition System for the CDMS II dark matter experiment was designed and built when the experiment moved to its new underground installation at the Soudan Lab. The combination of remote operation and increased data load necessitated a completely new design. Elements of the original LabView system remained as stand-alone diagnostic programs, but the main data processing moved to a VME-based system with custom electronics for signal conditioning, trigger formation and buffering. The data rate was increased 100-fold and the automated cryogenic system was linked to the data acquisition. A modular server framework with associated user interfaces was implemented in Java to allow control and monitoring of the entire experiment remotely.

  9. Optimization of a hybrid solar energy collector system 

    E-Print Network [OSTI]

    Shinkman, Alan M.

    1981-01-01T23:59:59.000Z

    OPTIMIZATION OF A HYBRID SOLAR ENERGY COLLECTOR SYSTEM A Thesis by ALAN M. SHI NEMAN Submitted to the Graduate College of Texas A&N University in partial fulfillment of the requirement for the degree MASTER OF SCIENCE May 1981 Major Subject... the investment tax credit for farm and ranch operations, 5) establishing a progressive property tax, 6) making certain forms of vertical integration in agriculture a violation of anti-trust laws, 7) prohibiting foreign ownership of farmland, and 8) limiting...

  10. Dynamical control of quantum state transfer within hybrid open systems

    E-Print Network [OSTI]

    B. M. Escher; G. Bensky; J. Clausen; G. Kurizki; L. Davidovich

    2010-10-25T23:59:59.000Z

    We analyze quantum state-transfer optimization within hybrid open systems, from a "noisy" (write-in) qubit to its "quiet" counterpart (storage qubit). Intriguing interplay is revealed between our ability to avoid bath-induced errors that profoundly depend on the bath-memory time and the limitations imposed by leakage out of the operational subspace. Counterintuitively, under no circumstances is the fastest transfer optimal (for a given transfer energy).

  11. Dynamical control of quantum state transfer within hybrid open systems

    E-Print Network [OSTI]

    Escher, B M; Clausen, J; Kurizki, G; Davidovich, L

    2010-01-01T23:59:59.000Z

    We analyze quantum state-transfer optimization within hybrid open systems, from a "noisy" (write-in) qubit to its "quiet" counterpart (storage qubit). Intriguing interplay is revealed between our ability to avoid bath-induced errors that profoundly depend on the bath-memory time and the limitations imposed by leakage out of the operational subspace. Counterintuitively, under no circumstances is the fastest transfer optimal (for a given transfer energy).

  12. Optimization of a hybrid solar energy collector system

    E-Print Network [OSTI]

    Shinkman, Alan M.

    1981-01-01T23:59:59.000Z

    OPTIMIZATION OF A HYBRID SOLAR ENERGY COLLECTOR SYSTEM A Thesis by ALAN M. SHI NEMAN Submitted to the Graduate College of Texas A&N University in partial fulfillment of the requirement for the degree MASTER OF SCIENCE May 1981 Major Subject...: (Chairman of Committee) (Member) (Member) (Me et) (Head o Department) May 1981 wmezg ABSTRACT The Structural Impact of Commodity Farm Programs on Farms in the Southern Texas High Plains. (May 1981) Christina Ray Shirley, B. S. , Illinois State...

  13. Introduction to Hybrid Systems Karl Henrik Johansson

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    studied as model for nuclear reactors, electrical transformers and tombstones #12;K. H. Johansson 19 transitions ·System may show complex dynamics ·Extensively studied as model for nuclear reactors, electrical Fast Retransmit Slow-Start #12;K. H. Johansson 25 f f f RTT Lw r = f f f RTT Lw r = f f f RTT Lw r

  14. A finite state machine framework for robust analysis and control of hybrid systems

    E-Print Network [OSTI]

    Tarraf, Danielle C. (Danielle Charles), 1974-

    2006-01-01T23:59:59.000Z

    Hybrid systems, describing interactions between analog and discrete dynamics, are pervasive in engineered systems and pose unique, challenging performance verification and control synthesis problems. Existing approaches ...

  15. Evaluation of the 2007 Toyota Camry Hybrid Syneregy Drive System

    SciTech Connect (OSTI)

    Burress, T.A.; Coomer, C.L.; Campbell, S.L.; Seiber, L.E.; Marlino, L.D.; Staunton, R.H.; Cunningham, J.P.

    2008-04-15T23:59:59.000Z

    The U.S. Department of Energy (DOE) and American automotive manufacturers General Motors, Ford, and DaimlerChrysler began a five-year, cost-shared partnership in 1993. Currently, hybrid electric vehicle (HEV) research and development is conducted by DOE through its FreedomCAR and Vehicle Technologies (FCVT) program. The mission of the FCVT program is to develop more energy efficient and environmentally friendly highway transportation technologies. Program activities include research, development, demonstration, testing, technology validation, and technology transfer. These activities are aimed at developing technologies that can be domestically produced in a clean and cost-competitive manner. Under the FCVT program, support is provided through a three-phase approach [1] which is intended to: • Identify overall propulsion and vehicle-related needs by analyzing programmatic goals and reviewing industry’s recommendations and requirements, then develop the appropriate technical targets for systems, subsystems, and component research and development activities; • Develop and validate individual subsystems and components, including electric motors, emission control devices, battery systems, power electronics, accessories, and devices to reduce parasitic losses; and • Determine how well the components and subassemblies work together in a vehicle environment or as a complete propulsion system and whether the efficiency and performance targets at the vehicle level have been achieved. The research performed in this area will help remove technical and cost barriers to enable technology for use in such advanced vehicles as hybrid electric, plug-in hybrid electric, electric, and fuel-cell-powered vehicles.

  16. The Simulation of Synchronous Reactive Systems In Ptolemy II

    E-Print Network [OSTI]

    The Simulation of Synchronous Reactive Systems In Ptolemy II by Paul Whitaker Submitted to the Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, in partial;_____________________________________________________________________ Simulation of Synchronous Reactive Systems in Ptolemy II ii Abstract The Synchronous Reactive (SR) domain

  17. System Simulations of Hybrid Electric Vehicles with Focus on...

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

    of Hybrid Electric Vehicles with Focus on Emissions Comparative simulations of hybrid electric vehicles with gasoline and diesel engines will be conducted with focus on...

  18. Hybrid Electric Systems: Goals, Strategies, and Top Accomplishments (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2010-06-01T23:59:59.000Z

    Fact sheet describes the work EERE is doing in the areas of hybrid, plug-in hybrid, and all-electric vehicles.

  19. Hybrid Plasma Reactor/Filter for Transportable Collective Protection Systems

    SciTech Connect (OSTI)

    Josephson, Gary B.; Tonkyn, Russell G.; Frye, J. G.; Riley, Brian J.; Rappe, Kenneth G.

    2011-04-06T23:59:59.000Z

    Pacific Northwest National Laboratory (PNNL) has performed an assessment of a Hybrid Plasma/Filter system as an alternative to conventional methods for collective protection. The key premise of the hybrid system is to couple a nonthermal plasma (NTP) reactor with reactive adsorption to provide a broader envelope of protection than can be provided through a single-solution approach. The first step uses highly reactive species (e.g. oxygen radicals, hydroxyl radicals, etc.) created in a nonthermal plasma (NTP) reactor to destroy the majority (~75% - 90%) of an incoming threat. Following the NTP reactor an O3 reactor/filter uses the O3 created in the NTP reactor to further destroy the remaining organic materials. This report summarizes the laboratory development of the Hybrid Plasma Reactor/Filter to protect against a ‘worst-case’ simulant, methyl bromide (CH3Br), and presents a preliminary engineering assessment of the technology to Joint Expeditionary Collective Protection performance specifications for chemical vapor air purification technologies.

  20. Controllable optical bistability in a hybrid optomechanical system

    E-Print Network [OSTI]

    Sarma, Bijita

    2015-01-01T23:59:59.000Z

    We investigate theoretically the effect of optical feedback from a cavity containing an ultracold two level atomic ensemble, on the bistable behavior shown by mean intracavity optical field in an optomechanical cavity resonator. It turns out that the optical bistability can be controlled by tuning the frequency and power of the single driving laser as well as by varying different system parameters provided by the hybrid interaction. Significantly, even though the atomic cavity is not driven by any laser pump and there is no coupling with the mechanical oscillator directly, the intracavity optical field in the atomic cavity also exhibits bistability due to the optical coupling with the optomechanical cavity. In essence, our work emphasizes the possibility of realization of a better controllable optical switch depending on the hybrid interaction.

  1. The Hybrid Solid Oxide Fuel Cell (SOFC) and Gas Turbine (GT) Systems Steady State Modeling

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The Hybrid Solid Oxide Fuel Cell (SOFC) and Gas Turbine (GT) Systems Steady State Modeling Penyarat Fuel Cells (SOFCs) are of great interest nowadays. The feature of SOFCs makes them suitable for hybrid plants offer high cycle efficiencies. In this work a hybrid solid oxide fuel cell and gas turbine power

  2. Design of Electric or Hybrid vehicle alert sound system for pedestrian

    E-Print Network [OSTI]

    Boyer, Edmond

    Design of Electric or Hybrid vehicle alert sound system for pedestrian J.-C. Chamard and V, France 1691 #12;The arrival of fully or hybrid electric vehicles raised safety problems respect the environment to warn of his approach. However, hybrid and electric vehicles can potentially be dangerous

  3. Safety in Semi-autonomous Multi-vehicle Systems: A Hybrid Control Approach

    E-Print Network [OSTI]

    Entekhabi, Dara

    1 Safety in Semi-autonomous Multi-vehicle Systems: A Hybrid Control Approach Rajeev Verma, Member illustrate our results on an in-scale multi-vehicle roundabout test-bed. Index Terms--Safety, hybrid control on the problem of safe design in the presence of human operators and employ a formal hybrid control approach. We

  4. Seamless Energy Management Systems Part II: Development of Prototype

    E-Print Network [OSTI]

    Seamless Energy Management Systems Part II: Development of Prototype Core Elements Final Project System #12;#12;Seamless Energy Management Systems Part II: Development of Prototype Core Elements Final Center (PSERC) research project entitled "Seamless Energy Management Systems" (S-53G for 2013

  5. Observability Criteria and Estimator Design for Stochastic Linear Hybrid Systems

    E-Print Network [OSTI]

    Gummadi, Ramakrishna

    . Alessandri and Coletta [5] proposed a Luenberger observer design methodology for deterministic linear hybrid

  6. Hai Lin, Guisheng Zhai, Panos J. Antsaklis, "Explicit Hybrid Optimal Controller for Disturbance Attenuation in Linear Hybrid Systems," Proc. of the 16th IFAC World Congress, Prague, Czech Republic, July 4-8, 2005.

    E-Print Network [OSTI]

    Antsaklis, Panos

    Optimal Controller for Disturbance Attenuation in Linear Hybrid Systems," Proc. of the 16th IFAC World Hybrid Optimal Controller for Disturbance Attenuation in Linear Hybrid Systems," Proc. of the 16th IFAC, "Explicit Hybrid Optimal Controller for Disturbance Attenuation in Linear Hybrid Systems," Proc. of the 16th

  7. Postdoc position: Hybrid Systems Theorem Proving Carnegie Mellon University, Computer Science Department

    E-Print Network [OSTI]

    Sandholm, Tuomas W.

    Postdoc position: Hybrid Systems Theorem Proving Carnegie Mellon University, Computer Science is to develop next-generation verification techniques for cyber- physical systems and hybrid systems. Our prover KeYmaera and have found application in the verification of cars, aircraft, railway systems

  8. A Mathematical Model for a Lithium-Ion Battery/Electrochemical Capacitor Hybrid System

    E-Print Network [OSTI]

    Popov, Branko N.

    A Mathematical Model for a Lithium-Ion Battery/Electrochemical Capacitor Hybrid System Godfrey those of high-energy battery systems such as lithium ion. Al- though advanced battery systems and double the performance of a battery/electrochemical capacitor-hybrid system has been developed. Simulation results

  9. A Collision Avoidance Control for Multi-Vehicle Using PWA/MLD Hybrid System Representation

    E-Print Network [OSTI]

    A Collision Avoidance Control for Multi-Vehicle Using PWA/MLD Hybrid System Representation Masakazu for multi-vehicle systems which are modeled as a class of hybrid systems, piecewise affine (PWA) systems. We propose an optimal trajectory path which guarantees that the vehicle moves to the objective point

  10. DESIGN OF HYBRID MARINE CONTROL SYSTEMS FOR DYNAMIC POSITIONING IN EXTREME SEAS

    E-Print Network [OSTI]

    Nørvåg, Kjetil

    1 3-Jun-13 DESIGN OF HYBRID MARINE CONTROL SYSTEMS FOR DYNAMIC POSITIONING IN EXTREME SEAS SYSTEM EMERGENCY SHUTDOWN FIRE & GAS ENERGY MANAGEMENT SYSTEM AZIPOD INFORMATION MANAGEMENT REMOTE Introduction ­ Challenges #12;3-Jun-13 7 Introduction ­ Hybrid concept motivation · Design of control system

  11. Control system and method for a hybrid electric vehicle

    DOE Patents [OSTI]

    Tamor, Michael Alan (Toledo, OH)

    2001-03-06T23:59:59.000Z

    Several control methods are presented for application in a hybrid electric vehicle powertrain including in various embodiments an engine, a motor/generator, a transmission coupled at an input thereof to receive torque from the engine and the motor generator coupled to augment torque provided by the engine, an energy storage device coupled to receive energy from and provide energy to the motor/generator, an engine controller (EEC) coupled to control the engine, a transmission controller (TCM) coupled to control the transmission and a vehicle system controller (VSC) adapted to control the powertrain.

  12. Adaptive hybrid optimal quantum control for imprecisely characterized systems

    E-Print Network [OSTI]

    D. J. Egger; F. K. Wilhelm

    2014-06-24T23:59:59.000Z

    Optimal quantum control theory carries a huge promise for quantum technology. Its experimental application, however, is often hindered by imprecise knowledge of the its input variables, the quantum system's parameters. We show how to overcome this by Adaptive Hybrid Optimal Control (Ad-HOC). This protocol combines open- and closed-loop optimal by first performing a gradient search towards a near-optimal control pulse and then an experimental fidelity measure with a gradient-free method. For typical settings in solid-state quantum information processing, Ad-Hoc enhances gate fidelities by an order of magnitude hence making optimal control theory applicable and useful.

  13. Electron-State Hybridization in Heavy-Fermion Systems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContractElectron-State Hybridization in Heavy-Fermion Systems Print

  14. Robust optimal sizing of an hybrid energy stand-alone system

    E-Print Network [OSTI]

    Alain Billionnet

    2014-03-25T23:59:59.000Z

    Mar 25, 2014 ... Abstract: This paper deals with the optimal design of a stand-alone hybrid system composed of wind turbines, solar photovoltaic panels and ...

  15. IMPLEMENTATION OF A HYBRID CONTROLLER FOR CRITICAL BUILDING HVAC SYSTEMS

    SciTech Connect (OSTI)

    Craig Rieger

    2008-11-01T23:59:59.000Z

    Many industrial facilities utilize pressure control gradients to prevent migration of hazardous species from containment areas to occupied zones, often using Proportional-Integral-Derivative (PID) control systems. When operators rebalance the plant, variation from the desired gradients can occur and the operating conditions can change enough that the PID parameters are no longer adequate to maintain a stable system. As the goal of the ventilation control system is to optimize the pressure gradients and associated flows for the plant, Linear Quadratic Tracking (LQT) is a method that provides a time-based approach to guiding plant interactions. However, LQT methods are susceptible to modeling and measurement errors, and therefore the additional use of soft computing methods is proposed for implementation to account for these errors and nonlinearities. The performance of the resulting hybrid controller is demonstrated through simulation and experimental testing as compared to a representative PID controller.

  16. Stability of Hybrid System Limit Cycles: Application to the Compass Gait Biped Robot

    E-Print Network [OSTI]

    Hiskens, Ian A.

    Stability of Hybrid System Limit Cycles: Application to the Compass Gait Biped Robot Ian A. Hiskens a diverse range of application areas. Examples include power systems [1], robotics [2, 3], manufacturing [4 are illustrated using a com- pass gait biped robot example. 1 Introduction Hybrid systems are characterized

  17. Controller Synthesis for a class of Uncertain Piecewise Linear Hybrid Dynamical Systems 1

    E-Print Network [OSTI]

    Sontag, Eduardo

    Controller Synthesis for a class of Uncertain Piecewise Linear Hybrid Dynamical Systems 1 Hai Lin2, observability and controllability etc. Piecewise linear systems arise often from linearization of nonlinear systems1 . Here we consider the controller synthesis problem for uncertain piecewise linear hybrid dynami

  18. PERFORMANCE VERIFICATION OF DISCRETE EVENT SYSTEMS USING HYBRID MODEL-CHECKING

    E-Print Network [OSTI]

    Boyer, Edmond

    of the plant with a timed discrete model of the controller. We will also show, using a basic examplePERFORMANCE VERIFICATION OF DISCRETE EVENT SYSTEMS USING HYBRID MODEL-CHECKING Bruno Denis (1 Systems (DES) and Hybrid Dynamic Systems (HDS) are quite substantial, especially as regards the controller

  19. Control Valve Trajectories for SOFC Hybrid System Startup

    SciTech Connect (OSTI)

    Gorrell, Megan; Banta, Larry; Rosen, William; Restrepo, Bernardo; Tucker, David

    2012-07-01T23:59:59.000Z

    Control and management of cathode airflow in a solid oxide fuel cell gas turbine hybrid power system was analyzed using the Hybrid Performance (HyPer) hardware simulation at the National Energy Technology (NETL), U.S. Department of Energy. This work delves into previously unexplored operating practices for HyPer, via simultaneous manipulation of bypass valves and the electric load on the generator. The work is preparatory to the development of a Multi-Input, Multi-Output (MIMO) controller for HyPer. A factorial design of experiments was conducted to acquire data for 81 different combinations of the manipulated variables, which consisted of three air flow control valves and the electric load on the turbine generator. From this data the response surface for the cathode airflow with respect to bypass valve positions was analyzed. Of particular interest is the control of airflow through the cathode during system startup and during large load swings. This paper presents an algorithm for controlling air mass flow through the cathode based on a modification of the steepest ascent method.

  20. Evaluation of 2005 Honda Accord Hybrid Electric Drive System

    SciTech Connect (OSTI)

    Staunton, R.H.; Burress, T.A.; Marlino, L.D.

    2006-09-11T23:59:59.000Z

    The Hybrid Electric Vehicle (HEV) program officially began in 1993 as a five-year, cost-shared partnership between the U.S. Department of Energy (DOE) and American auto manufacturers: General Motors, Ford, and Daimler Chrysler. Currently, HEV research and development is conducted by DOE through its FreedomCAR and Vehicle Technologies (FCVT) program. The mission of the FCVT program is to develop more energy efficient and environmentally friendly highway transportation technologies. Program activities include research, development, demonstration, testing, technology validation, and technology transfer. These activities are aimed at developing technologies that can be domestically produced in a clean and cost-competitive manner. The vehicle systems technologies subprogram, which is one of four subprograms under the FCVT program, supports the efforts of the FreedomCAR through a three-phase approach [1] intended to: (1) Identify overall propulsion and vehicle-related needs by analyzing programmatic goals and reviewing industry's recommendations and requirements, then develop the appropriate technical targets for systems, subsystems, and component research and development activities; (2) Develop and validate individual subsystems and components, including electric motors, emission control devices, battery systems, power electronics, accessories, and devices to reduce parasitic losses; and (3) Determine how well the components and subassemblies work together in a vehicle environment or as a complete propulsion system and whether the efficiency and performance targets at the vehicle level have been achieved. The research performed under the vehicle systems subprogram will help remove technical and cost barriers to enable technology for use in such advanced vehicles as hybrid electric, plug-in electric, and fuel-cell-powered vehicles.

  1. A new hybrid algorithm for analysis of HVdc and FACTs systems

    SciTech Connect (OSTI)

    Anderson, G.W.J. [New Zealand Aluminium Smelters Ltd., Invercargill (New Zealand); Watson, N.R.; Arnold, C.P.; Arrillaga, J. [Univ. of Canterbury, Christchurch (New Zealand)

    1995-12-31T23:59:59.000Z

    Hybrid stability programs use a transient stability analysis for ac systems, in conjunction with detailed state variable or EMTP type modelling for fast dynamic devices. This paper presents a new hybrid algorithm that uses optimized techniques based on previously proposed methods. The hybrid provides a useful analysis tool to examine systems incorporating fast dynamic non-linear components such as HVdc links and FACTs devices.

  2. Evaluation of systems and components for hybrid optical firing sets

    SciTech Connect (OSTI)

    Landry, M.J.; Rupert, J.W.; Mittas, A.

    1989-06-01T23:59:59.000Z

    High-energy density light appears to be a unique energy form that may be used to enhance the nuclear safety of weapon systems. Hybrid optical firing sets (HOFS) utilize the weak-link/strong-link exclusion region concept for nuclear safety; this method is similar to present systems, but uses light to transmit power across the exclusion region barrier. This report describes the assembling, operating, and testing of fourteen HOFS. These firing sets were required to charge a capacitor-discharge unit to 2.0 and 2.5 kV (100 mJ) in less than 1 s. First, we describe the components, the measurement techniques used to evaluate the components, and the different characteristics of the measured components. Second, we describe the HOFS studied, the setups used for evaluating them, and the resulting characteristics. Third, we make recommendations for improving the overall performance and suggest the best HOFS for packaging. 36 refs., 145 figs., 14 tabs.

  3. AT2 DS II - Accelerator System Design (Part II) - CCC Video Conference

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    Discussion Session - Accelerator System Design (Part II) Tutors: C. Darve, J. Weisend II, Ph. Lebrun, A. Dabrowski, U. Raich Video Conference with the CERN Control Center. Experts in the field of Accelerator science will be available to answer the students questions. This session will link the CCC and SA (using Codec VC).

  4. AT2 DS II - Accelerator System Design (Part II) - CCC Video Conference

    SciTech Connect (OSTI)

    None

    2010-12-17T23:59:59.000Z

    Discussion Session - Accelerator System Design (Part II) Tutors: C. Darve, J. Weisend II, Ph. Lebrun, A. Dabrowski, U. Raich Video Conference with the CERN Control Center. Experts in the field of Accelerator science will be available to answer the students questions. This session will link the CCC and SA (using Codec VC).

  5. Combustion system for hybrid solar fossil fuel receiver

    DOE Patents [OSTI]

    Mehos, Mark S.; Anselmo, Kenneth M.; Moreno, James B.; Andraka, Charles E.; Rawlinson, K. Scott; Corey, John; Bohn, Mark S.

    2004-05-25T23:59:59.000Z

    A combustion system for a hybrid solar receiver comprises a pre-mixer which combines air and fuel to form an air-fuel mixture. The mixture is introduced tangentially into a cooling jacket. A burner plenum is fluidically connected to the cooling jacket such that the burner plenum and the cooling jacket are arranged in thermal contact with one another. The air-fuel mixture flows through the cooling jacket cooling the burner plenum to reduce pre-ignition of the air-fuel mixture in the burner plenum. A combustion chamber is operatively associated with and open to the burner plenum to receive the air-fuel mixture from the burner plenum. An igniter is operatively positioned in the combustion chamber to combust the air-fuel mixture, releasing heat. A recuperator is operatively associated with the burner plenum and the combustion chamber and pre-heats the air-fuel mixture in the burner plenum with heat from the combustion chamber. A heat-exchanger is operatively associated and in thermal contact with the combustion chamber. The heat-exchanger provides heat for the hybrid solar receiver.

  6. Use of a hybrid technology in a critical security system.

    SciTech Connect (OSTI)

    Trujillo, David J.

    2010-10-01T23:59:59.000Z

    Assigning an acceptable level of power reliability in a security system environment requires a methodical approach to design when considering the alternatives tied to the reliability and life of the system. The downtime for a piece of equipment, be it for failure, routine maintenance, replacement, or refurbishment or connection of new equipment is a major factor in determining the reliability of the overall system. In addition to these factors is the condition where the system is static or dynamic in its growth. Most highly reliable security power source systems are supplied by utility power with uninterruptable power source (UPS) and generator backup. The combination of UPS and generator backup with a reliable utility typically provides full compliance to security requirements. In the energy market and from government agencies, there is growing pressure to utilize alternative sources of energy other than fossil fuel to increase the number of local generating systems to reduce dependence on remote generating stations and cut down on carbon effects to the environment. There are also conditions where a security system may be limited on functionality due to lack of utility power in remote locations. One alternative energy source is a renewable energy hybrid system including a photovoltaic or solar system with battery bank and backup generator set. This is a viable source of energy in the residential and commercial markets where energy management schemes can be incorporated and systems are monitored and maintained regularly. But, the reliability of this source could be considered diminished when considering the security system environment where stringent uptime requirements are required.

  7. Use of a hybrid technology in a critical security system.

    SciTech Connect (OSTI)

    Scharmer, Carol; Trujillo, David J.

    2010-08-01T23:59:59.000Z

    Assigning an acceptable level of power reliability in a security system environment requires a methodical approach to design when considering the alternatives tied to the reliability and life of the system. The downtime for a piece of equipment, be it for failure, routine maintenance, replacement, or refurbishment or connection of new equipment is a major factor in determining the reliability of the overall system. In addition to these factors is the condition where the system is static or dynamic in its growth. Most highly reliable security power source systems are supplied by utility power with uninterruptable power source (UPS) and generator backup. The combination of UPS and generator backup with a reliable utility typically provides full compliance to security requirements. In the energy market and from government agencies, there is growing pressure to utilize alternative sources of energy other than fossil fuel to increase the number of local generating systems to reduce dependence on remote generating stations and cut down on carbon effects to the environment. There are also conditions where a security system may be limited on functionality due to lack of utility power in remote locations. One alternative energy source is a renewable energy hybrid system including a photovoltaic or solar system with battery bank and backup generator set. This is a viable source of energy in the residential and commercial markets where energy management schemes can be incorporated and systems are monitored and maintained regularly. But, the reliability of this source could be considered diminished when considering the security system environment where stringent uptime requirements are required.

  8. Online Capable Optimized Planning of Power Split in a Hybrid Energy Storage System

    E-Print Network [OSTI]

    Paderborn, Universität

    Online Capable Optimized Planning of Power Split in a Hybrid Energy Storage System Karl Stephan, D-33095 Paderborn (Germany) {stille,romaus,boecker}@lea.upb.de Abstract--A hybrid energy storage system is an energy storage consisting of more than one type of energy storages combining

  9. Optimal Energy Management for a Hybrid Energy Storage System Combining Batteries and Double

    E-Print Network [OSTI]

    Paderborn, Universität

    Optimal Energy Management for a Hybrid Energy Storage System Combining Batteries and Double Layer storage for operation. High demands concerning power and energy density, small volume and weight is to combine storage technologies with complementary characteristics as a hybrid energy storage system. Thus

  10. A scalable and flexible hybrid energy storage system design and implementation

    E-Print Network [OSTI]

    Pedram, Massoud

    A scalable and flexible hybrid energy storage system design and implementation Younghyun Kim and flexibility. Detailed description on implementation of hybrid energy storage system prototype. Power conversion efficiency and energy storage element characteristics considered. a r t i c l e i n f o Article

  11. Design of piecewise linear hybrid dynamical systems using a control regulator approach

    E-Print Network [OSTI]

    Antsaklis, Panos

    Design of piecewise linear hybrid dynamical systems using a control regulator approach X This paper presents a novel framework for hierarchical control of piecewise linear hybrid dynamical systems the continuous and the discrete part is defined by piecewise linear maps. Control design is formulated

  12. Safe Intersections: At the Crossing of Hybrid Systems and Verification Sarah M. Loos and Andre Platzer

    E-Print Network [OSTI]

    Platzer, André

    scenarios may be distributed hybrid systems [21] when there is a multi-agent situation with mul- tiple carsSafe Intersections: At the Crossing of Hybrid Systems and Verification Sarah M. Loos and Andr and risks in ground trans- portation, e.g., by making cars aware of their environment and regulating speed

  13. Electrically heated particulate filter regeneration methods and systems for hybrid vehicles

    DOE Patents [OSTI]

    Gonze, Eugene V. (Pinckney, MI); Paratore, Jr., Michael J. (Howell, MI)

    2010-10-12T23:59:59.000Z

    A control system for controlling regeneration of a particulate filter for a hybrid vehicle is provided. The system generally includes a regeneration module that controls current to the particulate filter to initiate regeneration. An engine control module controls operation of an engine of the hybrid vehicle based on the control of the current to the particulate filter.

  14. A Feasibility Study for Wind/Hybrid Power System Applications for New England Islands

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    wind/hybrid systems. A feasibility study, carried out at the Renewable Energy Research Laboratory (RERLA Feasibility Study for Wind/Hybrid Power System Applications for New England Islands Gabriel Blanco, James F. Manwell, and Jon G. McGowan Renewable Energy Research Laboratory, University

  15. Short communication Optimization of hybrid ground coupled and air source heat pump systems

    E-Print Network [OSTI]

    Fernández de Córdoba, Pedro

    Short communication Optimization of hybrid ­ ground coupled and air source ­ heat pump systems 2008 Accepted 14 January 2010 Available online 28 January 2010 Keywords: Ground coupled heat pump Air to water heat pump Thermal storage device Hybrid HVAC system Energy efficiency Numerical simulation a b

  16. Robust Optimal Control Strategies for a Hybrid Fuel Cell Power Management System

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Robust Optimal Control Strategies for a Hybrid Fuel Cell Power Management System David Hern strategies are proposed for the power management subsystem of a hybrid fuel cell/supercapacitor power generation system. The control strate- gies are based on different control configurations involving the power

  17. Estimation of global posteriors and forward-backward training of hybrid HMM/ANN systems

    E-Print Network [OSTI]

    Hennebert, J; Ris, C; Bourlard, Herve; Renals, Steve; Morgan, Nelson

    1997-01-01T23:59:59.000Z

    The results of our research presented in this paper are two-fold. First, an estimation of global posteriors is formalized in the framework of hybrid HMM/ANN systems. It is shown that hybrid HMM/ANN systems, in which the ANN part estimates local...

  18. On Control-Lyapunov Functions for Hybrid Time-Varying Systems Michael Malisoff and Frederic Mazenc

    E-Print Network [OSTI]

    Sontag, Eduardo

    On Control-Lyapunov Functions for Hybrid Time-Varying Systems Michael Malisoff and Fr´ed´eric Mazenc Abstract-- We explicitly construct strict input-to-state stable Lyapunov functions for time varying hybrid systems, in terms of given nonstrict Lyapunov functions and persistency of excitation

  19. Control system and method for a hybrid electric vehicle

    DOE Patents [OSTI]

    Phillips, Anthony Mark (Northville, MI); Blankenship, John Richard (Dearborn, MI); Bailey, Kathleen Ellen (Dearborn, MI); Jankovic, Miroslava (Birmingham, MI)

    2001-01-01T23:59:59.000Z

    A vehicle system controller (20) is presented for a LSR parallel hybrid electric vehicle having an engine (10), a motor (12), wheels (14), a transmission (16) and a battery (18). The vehicle system controller (20) has a state machine having a plurality of predefined states (22-32) that represent operating modes for the vehicle. A set of rules is defined for controlling the transition between any two states in the state machine. The states (22-32) are prioritized according to driver demands, energy management concerns and system fault occurrences. The vehicle system controller (20) controls the transitions from a lower priority state to a higher priority state based on the set of rules. In addition, the vehicle system controller (20) will control a transition to a lower state from a higher state when the conditions no longer warrant staying in the current state. A unique set of output commands is defined for each state for the purpose of controlling lower level subsystem controllers. These commands serve to achieve the desire vehicle functionality within each state and insure smooth transitions between states.

  20. A novel hybrid (wind-photovoltaic) system sizing procedure

    SciTech Connect (OSTI)

    Hocaoglu, Fatih O. [Afyon Kocatepe University, Dept. of Electronics and Communication Eng., 03200 Afyonkarahisar (Turkey); Gerek, Oemer N.; Kurban, Mehmet [Anadolu University, Dept. of Electrical and Electronics Eng., 26555 Eskisehir (Turkey)

    2009-11-15T23:59:59.000Z

    Wind-photovoltaic hybrid system (WPHS) utilization is becoming popular due to increasing energy costs and decreasing prices of turbines and photovoltaic (PV) panels. However, prior to construction of a renewable generation station, it is necessary to determine the optimum number of PV panels and wind turbines for minimal cost during continuity of generated energy to meet the desired consumption. In fact, the traditional sizing procedures find optimum number of the PV modules and wind turbines subject to minimum cost. However, the optimum battery capacity is either not taken into account, or it is found by a full search between all probable solution spaces which requires extensive computation. In this study, a novel description of the production/consumption phenomenon is proposed, and a new sizing procedure is developed. Using this procedure, optimum battery capacity, together with optimum number of PV modules and wind turbines subject to minimum cost can be obtained with good accuracy. (author)

  1. Discussion on the Energy-Saving Potential of a Hybrid System in a Large Space Building in Different Areas 

    E-Print Network [OSTI]

    Liu, S.; Huang, C.

    2006-01-01T23:59:59.000Z

    The use of a hybrid ventilation system is promoted to decrease the annual energy consumption of air conditioning. The switch-point of temperature, which is related with weather conditions, is presented to control the hybrid system properly...

  2. Discussion on the Energy-Saving Potential of a Hybrid System in a Large Space Building in Different Areas

    E-Print Network [OSTI]

    Liu, S.; Huang, C.

    2006-01-01T23:59:59.000Z

    The use of a hybrid ventilation system is promoted to decrease the annual energy consumption of air conditioning. The switch-point of temperature, which is related with weather conditions, is presented to control the hybrid system properly...

  3. Hybrid-drive implosion system for ICF targets

    DOE Patents [OSTI]

    Mark, J.W.K.

    1987-10-14T23:59:59.000Z

    Hybrid-drive implosion systems for ICF targets are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator surroundingly disposed around fusion fuel. The ablator is first compressed to higher density by a laser system, or by an ion beam system, that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system that is optimized for this second phase of operation of the target. The fusion fuel is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion. 3 figs.

  4. Hybrid-drive implosion system for ICF targets

    DOE Patents [OSTI]

    Mark, James W. (Danville, CA)

    1988-01-01T23:59:59.000Z

    Hybrid-drive implosion systems (20,40) for ICF targets (10,22,42) are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator (12) surroundingly disposed around fusion fuel (14). The ablator is first compressed to higher density by a laser system (24), or by an ion beam system (44), that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system (30,48) that is optimized for this second phase of operation of the target. The fusion fuel (14) is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion.

  5. Evaluation of a Lower-Energy Energy Storage System (LEESS) for Full-Hybrid Electric Vehicles (HEVs) (Presentation)

    SciTech Connect (OSTI)

    Gonder, J.; Ireland, J.; Cosgrove, J.

    2013-04-01T23:59:59.000Z

    This presentation discusses the evaluation of a lower-energy energy storage system for full-hybrid electric vehicles.

  6. SIMULATION AND OPTIMAL CONTROL OF HYBRID GROUND SOURCE HEAT

    E-Print Network [OSTI]

    SIMULATION AND OPTIMAL CONTROL OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS By XIAOWEI XU Bachelor #12;ii SIMULATION AND OPTIMAL CONTROL OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS Dissertation Approved as co- advisor of this research project. His many years of building system simulation experience

  7. Operation o Solar Photovoltaic-Thermal (PVT) Hybrid System in KIER 

    E-Print Network [OSTI]

    Naveed, A.T.; Lee, E. J.; Kang, E. C.

    2006-01-01T23:59:59.000Z

    The details of the Photovoltaic Thermal (PVT) hybrid air heating system, UTC air heating system and its effect on the performance of photovoltaic (PV) module and room temperature in KIER are explained in this paper. Two identical test rooms were...

  8. Operation o Solar Photovoltaic-Thermal (PVT) Hybrid System in KIER

    E-Print Network [OSTI]

    Naveed, A.T.; Lee, E. J.; Kang, E. C.

    2006-01-01T23:59:59.000Z

    The details of the Photovoltaic Thermal (PVT) hybrid air heating system, UTC air heating system and its effect on the performance of photovoltaic (PV) module and room temperature in KIER are explained in this paper. Two identical test rooms were...

  9. A Modular Visual Model for Hybrid Systems Radu Grosu, Thomas Stauner and Manfred Broy

    E-Print Network [OSTI]

    Grosu, Radu

    , but also because hybrid systems are naturally decomposed into the system itself and its environment. Based by BMW, is to control the chassis level of an automobile by a pneumatic suspension. The abstract model

  10. The MOTion trap: a hybrid atom-ion trap system for experiments in cold-chemistry and the production of cold polar molecular ions

    E-Print Network [OSTI]

    Sullivan, Scott Trevor

    2013-01-01T23:59:59.000Z

    interaction in the hybrid system, the self heating rate ismass dependent heating e?ects for the hybrid system of this

  11. AMD PhenomII Architecture for Multimedia System -2010

    E-Print Network [OSTI]

    Silvano, Cristina

    of this technology is to reduce overall power consumption and lower heat generation, allowing for slower (thusAMD PhenomII Architecture for Multimedia System -2010 Prof. Cristina Silvano Group Member: Nazanin on the K10 (not "K10h") micro- architecture, or Family 10h Processors. · PhenomTM II processors deliver

  12. GAUSS-MANIN SYSTEMS, BRIESKORN LATTICES AND FROBENIUS STRUCTURES (II)

    E-Print Network [OSTI]

    Sabbah, Claude

    GAUSS-MANIN SYSTEMS, BRIESKORN LATTICES AND FROBENIUS STRUCTURES (II) by Antoine Douai & Claude Sabbah Dedicated to Yuri Manin Abstract. -- We give an explicit description of the canonical Frobenius Gauss-Manin, r´eseaux de Brieskorn et structures de Frobenius (II)) Nous donnons une description

  13. Infinite Time Optimal Control of Hybrid Systems with a Linear Performance Index Mato Baotic, Frank J. Christophersen, and Manfred Morari

    E-Print Network [OSTI]

    Sontag, Eduardo

    Infinite Time Optimal Control of Hybrid Systems with a Linear Performance Index Mato Baoti´c, Frank the constrained infinite time optimal control problem for the class of discrete time linear hybrid systems. When time, optimal control, discrete time, linear hybrid systems, dynamic program- ming, multi

  14. Optimal Design of a PV/Fuel Cell Hybrid Power System for the City of Brest in France

    E-Print Network [OSTI]

    Brest, Université de

    . Keywords--Hybrid power system, renewable energy, fuel cell, photovoltaic, generation unit sizing, energy with the optimal design of a stand-alone hybrid photovoltaic and fuel cell power system without battery storage-17]. For such king of hybrid power systems, the sources can be optimally sized with different techniques

  15. Advancements of the Hybrid Method UF6 Container Inspection System

    SciTech Connect (OSTI)

    Mace, Emily K.; Orton, Christopher R.; Jordan, David V.; McDonald, Benjamin S.; Smith, Leon E.

    2011-07-17T23:59:59.000Z

    Safeguards inspectors currently visit uranium enrichment plants to verify UF6 cylinder enrichment declarations. Measurements are performed with handheld high-resolution detectors on a limited number of cylinders taken to be representative of the plant’s cylinder inventory. These enrichment assay methods interrogate only a small fraction of the total cylinder volume, and are time-consuming and expensive to execute. Pacific Northwest National Laboratory (PNNL) is developing an automated UF6 cylinder verification station concept based on the combined collection of traditional enrichment-meter data (186 keV photons from 235U) and non-traditional, neutron-induced, high-energy gamma-ray signatures (3-8 MeV) with an array of collimated, medium-resolution scintillators. Previous work at PNNL (2010) demonstrated proof-of-principle that this hybrid method yields accurate, full-volume assay of the cylinder enrichment, reduces systematic errors when compared to several other enrichment assay methods, and provides simplified instrumentation and algorithms suitable for long-term, unattended operations. This system aims to increase the number of inspected cylinders at higher accuracy and with lower cost than when compared to inspectors with hand-held instruments. Several measurement campaigns of 30B cylinder populations and a refined MCNP model will be reported. The MCNP model consists of per-gram basis vectors for the different uranium isotopes and several fill geometries, enabling fast generation of any UF6 enrichment level and multiple configurations. The refined model was used to optimize collimator design and detector configuration for the hybrid method. In addition, a new field prototype based on model results was utilized in a set of field measurements.

  16. Reversible work extraction in a hybrid opto-mechanical system

    E-Print Network [OSTI]

    Cyril Elouard; Maxime Richard; Alexia Auffèves

    2015-02-16T23:59:59.000Z

    With the progress of nano-technology, thermodynamics also has to be scaled down, calling for specific protocols to extract and measure work. Usually, such protocols involve the action of an external, classical field (the battery) of infinite energy, that controls the energy levels of a small quantum system (the calorific fluid). Here we suggest a realistic device to reversibly extract work in a battery of finite energy : a hybrid optomechanical system. Such devices consist in an optically active two-level quantum system interacting strongly with a nano-mechanical oscillator that provides and stores mechanical work, playing the role of the battery. We identify protocols where the battery exchanges large, measurable amounts of work with the quantum emitter without getting entangled with it. When the quantum emitter is coupled to a thermal bath, we show that thermodynamic reversibility is attainable with state-of-the-art devices, paving the road towards the realization of a full cycle of information-to-energy conversion at the single bit level.

  17. Multiple-Source and Multiple-Destination Charge Migration in Hybrid Electrical Energy Storage Systems*

    E-Print Network [OSTI]

    Pedram, Massoud

    Multiple-Source and Multiple-Destination Charge Migration in Hybrid Electrical Energy Storage massimo.poncino@polito.it Abstract-- Hybrid electrical energy storage (HEES) systems consist of multiple banks of heterogeneous electrical energy storage (EES) elements that are connected to each other through

  18. Hybrid Electrical Energy Storage Systems Massoud Pedram, Naehyuck Chang, Younghyun Kim, and Yanzhi Wang

    E-Print Network [OSTI]

    Pedram, Massoud

    Hybrid Electrical Energy Storage Systems Massoud Pedram, Naehyuck Chang, Younghyun Kim, and Yanzhi of EES element fulfills high energy density, high power delivery capacity, low cost per unit of storage Descriptors B.0 [General] General Terms Design Keywords Energy, Energy storage, Electrical storage, Hybrid

  19. Title of thesis: SCHEDULING IN ENERGY HARVESTING SYSTEMS WITH HYBRID ENERGY STORAGE

    E-Print Network [OSTI]

    Ulukus, Sennur

    ABSTRACT Title of thesis: SCHEDULING IN ENERGY HARVESTING SYSTEMS WITH HYBRID ENERGY STORAGE and Computer Engineering In wireless networks, efficient energy storage and utilization plays a vital role transmission with an energy harvesting trans- mitter which has hybrid energy storage with a perfect super

  20. Hierarchical Design of Piecewise Linear Hybrid Dynamical Systems Using a Control Regulator Approach

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    Hierarchical Design of Piecewise Linear Hybrid Dynamical Systems Using a Control Regulator Approach.edu Abstract This paper presents a novel framework for hierarchical control of piecewise linear hybrid between the continuous and the discrete part is defined by piecewise linear maps. Control design is for

  1. DSP Based Ultracapacitor System for Hybrid-Electric Vehicles Juan W. Dixon

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    DSP Based Ultracapacitor System for Hybrid-Electric Vehicles Juan W. Dixon Department of Electrical to an electric vehicle at the Universidad Católica de Chile. These results will lead to conclusions about of primary source in hybrid-electric vehicles. The efficiency gain is being monitored at the ultracapacitor

  2. Hybrid Probabilistic RoadMap -Monte Carlo Motion Planning for Closed Chain Systems with

    E-Print Network [OSTI]

    Han, Li

    Hybrid Probabilistic RoadMap - Monte Carlo Motion Planning for Closed Chain Systems with Spherical@clarku.edu Abstract-- In this paper we propose a hybrid Probabilistic RoadMap - Monte Carlo (PRM-MC) motion planner and connect a large number of robot configurations in order to build a roadmap that reflects the properties

  3. HYBUD: An Energy-Efficient Architecture for Hybrid Parallel Disk Systems

    E-Print Network [OSTI]

    Qin, Xiao

    HYBUD: An Energy-Efficient Architecture for Hybrid Parallel Disk Systems Mais Nijim Computer demonstratively show that compared with two existing non-hybrid architectures, HYBUD provides significant energy, thereby being widely used to support a wide range of data-intensive applications. Optimizing energy

  4. Optimal control of a hybrid production/remanufacturing system using one shared resource

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Optimal control of a hybrid production/remanufacturing system using one shared resource Lâm Laurent products into the materials planning is a key issue in reverse logistics. 1.2 Hybrid production-birth-death processes 1 Introduction 1.1 Reusing product returns There are several reasons why companies consider

  5. Hybrid Ground Source System Analysis and Tool Development

    Broader source: Energy.gov [DOE]

    Project objectives: 1. Compile filtered hourly data for three monitored hybrid installations. 2.Validate existing HyGCHP model. 3.Refine and enhance the HyGCHP model (usability / capability). 4. Demonstrate impact of actual hybrid installations. 5. Report lessons learned and impacts of HyGSHPs to design/engineering community.

  6. Fluorescence from a quantum dot and metallic nanosphere hybrid system

    SciTech Connect (OSTI)

    Schindel, Daniel G. [Department of Mathematics and Statistics, University of Winnipeg, 515 Portage Avenue, Winnipeg, MB, R3B 2E9 (Canada); Singh, Mahi R. [Department of Physics and Astronomy, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 3K7 (Canada)

    2014-03-31T23:59:59.000Z

    We present energy absorption and interference in a quantum dot-metallic nanosphere system embedded on a dielectric substrate. A control field is applied to induce dipole moments in the nanosphere and the quantum dot, and a probe field is applied to monitor absorption. Dipole moments in the quantum dot or the metal nanosphere are induced, both by the external fields and by each other's dipole fields. Thus, in addition to direct polarization, the metal nanosphere and the quantum dot will sense one another via the dipole-dipole interaction. The density matrix method was used to show that the absorption spectrum can be split from one peak to two peaks by the control field, and this can also be done by placing the metal sphere close to the quantum dot. When the two are extremely close together, a self-interaction in the quantum dot produces an asymmetry in the absorption peaks. In addition, the fluorescence efficiency can be quenched by the addition of a metal nanosphere. This hybrid system could be used to create ultra-fast switching and sensing nanodevices.

  7. NAWIPS Integration with AWIPS II System Overview

    E-Print Network [OSTI]

    2011 #12;Topics · AWIPS Program Background ­ Functions/Mission ­ Technology Infusion Background ­ Technology Infusion Scope · AWIPS II Migration Overview ­ Mission / Goals ­ Business Need ­ Philosophy behind locations (includes HI, PR, Offutt AFB, Scott AFB) 3 NCEP Models Analyses #12;44 AWIPS Tech Infusion

  8. A hybrid system for fault detection and sensor fusion based on fuzzy clustering and artificial immune systems

    E-Print Network [OSTI]

    Jaradat, Mohammad Abdel Kareem Rasheed

    2007-04-25T23:59:59.000Z

    system (AIS). The proposed hybrid system approach consists of three main phases. In the first phase signal separation is performed using the Fuzzy C-Means (FCM) algorithm. Subsequently a single (fused) signal based on the information provided from...

  9. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System

    SciTech Connect (OSTI)

    Staunton, Robert H [ORNL; Ayers, Curtis William [ORNL; Chiasson, J. N. [University of Tennessee, Knoxville (UTK); Burress, Timothy A [ORNL; Marlino, Laura D [ORNL

    2006-05-01T23:59:59.000Z

    The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery- and generator-powered electric motor. Both of these motive-power sources are capable of providing mechanical-drive power for the vehicle. The engine can deliver a peak-power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak-power output of 50 kW over the speed range of 1200-1540 rpm. Together, this engine-motor combination has a specified peak-power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. To acquire knowledge and thereby improve understanding of the propulsion technology used in the 2004 Prius, a full range of design characterization studies were conducted to evaluate the electrical and mechanical characteristics of the 2004 Prius and its hybrid electric drive system. These characterization studies included (1) a design review, (2) a packaging and fabrication assessment, (3) bench-top electrical tests, (4) back-electromotive force (emf) and locked rotor tests, (5) loss tests, (6) thermal tests at elevated temperatures, and most recently (7) full-design-range performance testing in a controlled laboratory environment. This final test effectively mapped the electrical and thermal results for motor/inverter operation over the full range of speeds and shaft loads that these assemblies are designed for in the Prius vehicle operations. This testing was undertaken by the Oak Ridge National Laboratory (ORNL) as part of the U.S. Department of Energy (DOE) - Energy Efficiency and Renewable Energy (EERE) FreedomCAR and Vehicle Technologies (FCVT) program through its vehicle systems technologies subprogram. The thermal tests at elevated temperatures were conducted late in 2004, and this report does not discuss this testing in detail. The thermal tests explored the derating of the Prius motor design if operated at temperatures as high as is normally encountered in a vehicle engine. The continuous ratings at base speed (1200 rpm) with different coolant temperatures are projected from test data at 900 rpm. A separate, comprehensive report on this thermal control study is available [1].

  10. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System

    SciTech Connect (OSTI)

    Staunton, R.H.; Ayers, C.W.; Chiasson, J.N. (U Tennessee-Knoxville); Burress, B.A. (ORISE); Marlino, L.D.

    2006-05-01T23:59:59.000Z

    The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery- and generator-powered electric motor. Both of these motive-power sources are capable of providing mechanical-drive power for the vehicle. The engine can deliver a peak-power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak-power output of 50 kW over the speed range of 1200-1540 rpm. Together, this engine-motor combination has a specified peak-power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. To acquire knowledge and thereby improve understanding of the propulsion technology used in the 2004 Prius, a full range of design characterization studies were conducted to evaluate the electrical and mechanical characteristics of the 2004 Prius and its hybrid electric drive system. These characterization studies included (1) a design review, (2) a packaging and fabrication assessment, (3) bench-top electrical tests, (4) back-electromotive force (emf) and locked rotor tests, (5) loss tests, (6) thermal tests at elevated temperatures, and most recently (7) full-design-range performance testing in a controlled laboratory environment. This final test effectively mapped the electrical and thermal results for motor/inverter operation over the full range of speeds and shaft loads that these assemblies are designed for in the Prius vehicle operations. This testing was undertaken by the Oak Ridge National Laboratory (ORNL) as part of the U.S. Department of Energy (DOE)-Energy Efficiency and Renewable Energy (EERE) FreedomCAR and Vehicle Technologies (FCVT) program through its vehicle systems technologies subprogram. The thermal tests at elevated temperatures were conducted late in 2004, and this report does not discuss this testing in detail. The thermal tests explored the derating of the Prius motor design if operated at temperatures as high as is normally encountered in a vehicle engine. The continuous ratings at base speed (1200 rpm) with different coolant temperatures are projected from test data at 900 rpm. A separate, comprehensive report on this thermal control study is available [1].

  11. Physics of Aquatic Systems II, 12. Analytical Methods Universitt HeidelbergInstitut fr Umweltphysik Physics of Aquatic Systems II

    E-Print Network [OSTI]

    Aeschbach-Hertig, Werner

    techniques ­ Mass spectrometry ­ AMS · Lab tour ­ Noble gas mass spectrometry ­ Stable isotope mass spectrometry ­ Radiocarbon · Literature: Mook (2001), Vol. 1, ch. 10 & 11 Physics of Aquatic Systems II, 12 fundamental analytical techniques · Radiometry (decay counting, radioisotopes) · Mass spectrometry (mass

  12. Simulation of electric vehicles with hybrid power systems

    SciTech Connect (OSTI)

    Burke, A.F.; Cole, G.H.

    1990-01-01T23:59:59.000Z

    Computer programs for the simulation of the operation of electric vehicles with hybrid power systems are described. These programs treat cases in which high energy density ultracapacitors or high power density pulse batteries are used to load level the main energy storage battery in the vehicle. A generalized control strategy for splitting the power between the main battery and the pulse power devices is implemented such that the user can specify the nominal battery power as a function of the state-of-charge of the ultracapacitor or pulse power battery. The programs display graphically on the screen, as they run, the power from both the main battery and the pulse power device and the state-of-charge of the pulse power device. After each run is completed, a summary is printed out from which the effect of load leveling the battery on vehicle range and energy consumption can be determined. Default input files are provided with the programs so various combinations of vehicles, driveline components, and batteries of special current interest to the EV community can be run with either type of pulse power device. Typical simulation results are shown including cases in which the pulse power devices are connected in parallel with the main battery without interface electronics. 2 refs., 7 figs., 14 tabs.

  13. Optimal Green Energy Utilization in MIMO Systems with Hybrid Energy Supplies

    E-Print Network [OSTI]

    1 Optimal Green Energy Utilization in MIMO Systems with Hybrid Energy Supplies Congshi Hu, Jie Gong, it is feasible for BSs to be powered by green energy, such as solar energy and wind energy. For instance

  14. Design of a hybrid energy-generation system for autonomous kayaks

    E-Print Network [OSTI]

    Plumer, Kevin E. (Kevin Edward)

    2010-01-01T23:59:59.000Z

    The goal of this research is to design and analyze a series-hybrid energy-production system for an autonomous kayak. Currently these vehicles have limited range due to energy storage in lead acid batteries. Extending the ...

  15. Safety in Semi-autonomous Multi-vehicle Systems: A Hybrid Control Approach

    E-Print Network [OSTI]

    Verma, Rajeev

    In this article, we have illustrated the application of a formal hybrid control approach to design semiautonomous multivehicle systems that are guaranteed to be safe. Our experimental results illustrate that, in a structured ...

  16. Multi-Objective Capacity Planning of a Pv-Wind-Diesel-Battery Hybrid Power System

    E-Print Network [OSTI]

    Saif, A.

    A new solution methodology of the capacity design problem of a PV-Wind-Diesel-Battery Hybrid Power System (HPS) is presented. The problem is formulated as a Linear Programming (LP) model with two objectives: minimizing ...

  17. Speaker-Adaptation for Hybrid HMM-ANN Continuous Speech Recognition System 

    E-Print Network [OSTI]

    Neto, Joao; Almeida, Luis; Hochberg, Mike; Martins, Ciro; Nunes, Luis; Renals, Steve; Robinson, Tony

    1995-01-01T23:59:59.000Z

    to reduce this degradation. In this paper we present and evaluate some techniques for speaker-adaptation of a hybrid HMM-artificial neural network (ANN) continuous speech recognition system. These techniques are applied to a well trained, speaker...

  18. A Hybrid Model Based and Statistical Fault Diagnosis System for Industrial Process

    E-Print Network [OSTI]

    Lin, Chen-Han

    2014-11-21T23:59:59.000Z

    This thesis presents a hybrid model based and statistical fault diagnosis system, which applied on the nonlinear three-tank model. The purpose of fault diagnosis is generating and analyzing the residual to find out the fault occurrence. This fault...

  19. Robust optimal sizing of an hybrid energy stand-alone system

    E-Print Network [OSTI]

    2014-03-24T23:59:59.000Z

    Mar 24, 2014 ... the design of hybrid wind-PV systems that solves the location of the wind-PV ... sizes of the wind farm, photovoltaic array and battery.

  20. Nuclear Hybrid Energy Systems: Imperatives, Prospects, and Challenges

    SciTech Connect (OSTI)

    Steven E. Aumeier

    2010-10-01T23:59:59.000Z

    As global population reaches an expected 8 billion people by 2030, primary energy consumption is expected to increase by almost 40% from approximately 520 exajoules consumed today to almost 740 exajoules. Much of this increase is expected to come from non-Organization for Economic Cooperation and Development (OECD) nations, and Asia specifically. In these economies, energy used for transportation is expected to grow substantially, as is industrial, commercial and to a lesser degree residential energy use, creating considerable pressure on global and local energy markets. The magnitude and timing of growth in energy consumption likely will create a global imperative to deploy energy production technologies that balance the three pillars of energy security: • economic stability – related to the affordability of energy products, stability and predictability in their price, and the efficient and effective deployment of global capital resources in their development; • environmental sustainability – related to minimizing the negative impacts of energy production to air, land, and water systems and advancing the long-term viability of using a particular resource in a way that does not limit future generations ability to prosper; • resource security – related to the ability to access energy resources and products where and when necessary, in an affordable and predictable manner. One approach to meeting these objectives is hybrid energy systems (HES). Broadly described, HES are energy product production plants that take two or more energy resource inputs (typically includes both carbon and non-carbon based sources) and produce two or more energy products (e.g. electricity, liquid transportation fuels, industrial chemicals) in an integrated plant. Nuclear energy integration into HES offers intriguing potential, particularly if smaller (<300 MWe) reactors are available. Although the concept of using nuclear energy in a variety of non-electrical process applications is certainly not new, renewed interest in more tightly coupled energy product plants (such as HES) that meet the objectives outline above have gained additional interest recently, an interest likely sparked by sharpening energy security concerns. Studies have shown that non-nuclear integrated (hybrid) energy systems can have appealing attributes in terms of overall process efficiency, enhanced electric grid stability, renewable energy integration, and economic performance, and lifecycle greenhouse gas emissions. These attributes seem to be sufficiently compelling that several significant commercial investments in fossil-renewable HES are being made in the United States while the U.S. Defense Advanced Research Projects Agency (DARPA) has openly solicited information regarding nuclear energy integration schemes. The challenges of nuclear energy integration include myriad issues associated with the following RD&D areas, or “platforms”: • feedstock processing (e.g. bio-feedstock integration with coal, carbon feedstock extraction using nuclear energy); • heat / energy management (e.g. advanced heat exchangers, process design); • energy storage (e.g. H2 production, liquid fuels synthesis); • byproduct management (e.g. CO2 recycle approaches); • systems dynamics, integration and control (e.g. process dynamics analyses and optimization, advanced prognostics, diagnostics, variable time scale control and flow sheet optimization).

  1. Hybrid vehicle powertrain system with power take-off driven vehicle accessory

    DOE Patents [OSTI]

    Beaty, Kevin D.; Bockelmann, Thomas R.; Zou, Zhanijang; Hope, Mark E.; Kang, Xiaosong; Carpenter, Jeffrey L.

    2006-09-12T23:59:59.000Z

    A hybrid vehicle powertrain system includes a first prime mover, a first prime mover driven power transmission mechanism having a power take-off adapted to drive a vehicle accessory, and a second prime mover. The second prime mover is operable to drive the power transmission mechanism alone or in combination with the first prime mover to provide power to the power take-off through the power transmission mechanism. The invention further includes methods for operating a hybrid vehicle powertrain system.

  2. Energy minimization of separation processes using conventional/membrane hybrid systems

    SciTech Connect (OSTI)

    Gottschlich, D.E.; Roberts, D.L. (SRI International, Menlo Park, CA (USA))

    1990-09-28T23:59:59.000Z

    The purpose of this study was to identify the general principles governing the choice of hybrid separation systems over straight membrane or straight nonmembrane systems and to do so by examining practical applications (process design and economics). Our focus was to examine the energy consumption characteristics and overall cost factors of the membrane and nonmembrane technologies that cause hybrid systems to be preferred over nonhybrid systems. We evaluated four cases studies, chosen on the basis of likelihood of commercial viability of a hybrid system and magnitude of energy savings: (1) propane/propylene separation; (2) removal of nitrogen from natural gas; (3) concentration of Kraft black liquor; and (4)solvent deasphalting. For propane/propylene splitting, the membrane proved to be superior to distillation in both thermodynamic efficiency and processing cost (PC) when the product was 95% pure propylene. However, to produce higher purity products, the membrane alone could not perform the separation, and a membrane/distillation hybrid was required. In these cases, there is an optimum amount of separation to be accomplished by the membrane (expressed as the fraction of the total availability change of the membrane/distillation hybrid that takes place in the membrane and defined as {phi}{sub m}, the thermodynamic extent of separation). Qualitative and quantitative guidelines are discussed with regard to choosing a hybrid system. 54 refs., 66 figs., 36 tabs.

  3. Physics of Aquatic Systems II, 7. Tritium and Helium-3 Universitt HeidelbergInstitut fr Umweltphysik Physics of Aquatic Systems II

    E-Print Network [OSTI]

    Aeschbach-Hertig, Werner

    Physics of Aquatic Systems II, 7. Tritium and Helium-3 Universität HeidelbergInstitut für Umweltphysik 1 Physics of Aquatic Systems II ­ 7. Tritium and Helium-3 Werner Aeschbach-Hertig Institute of Environmental Physics University of Heidelberg Physics of Aquatic Systems II, 7. Tritium and Helium-3

  4. Development and application of a hybrid transport methodology for active interrogation systems

    SciTech Connect (OSTI)

    Royston, K.; Walters, W.; Haghighat, A. [Nuclear Engineering Program, Department of Mechanical Engineering, Virginia Tech., 900 N Glebe Rd., Arlington, VA 22203 (United States); Yi, C.; Sjoden, G. [Nuclear and Radiological Engineering, Georgia Tech, 801 Ferst Drive, Atlanta, GA 30332 (United States)

    2013-07-01T23:59:59.000Z

    A hybrid Monte Carlo and deterministic methodology has been developed for application to active interrogation systems. The methodology consists of four steps: i) neutron flux distribution due to neutron source transport and subcritical multiplication; ii) generation of gamma source distribution from (n, 7) interactions; iii) determination of gamma current at a detector window; iv) detection of gammas by the detector. This paper discusses the theory and results of the first three steps for the case of a cargo container with a sphere of HEU in third-density water cargo. To complete the first step, a response-function formulation has been developed to calculate the subcritical multiplication and neutron flux distribution. Response coefficients are pre-calculated using the MCNP5 Monte Carlo code. The second step uses the calculated neutron flux distribution and Bugle-96 (n, 7) cross sections to find the resulting gamma source distribution. In the third step the gamma source distribution is coupled with a pre-calculated adjoint function to determine the gamma current at a detector window. The AIMS (Active Interrogation for Monitoring Special-Nuclear-Materials) software has been written to output the gamma current for a source-detector assembly scanning across a cargo container using the pre-calculated values and taking significantly less time than a reference MCNP5 calculation. (authors)

  5. Hybrid Neural Network for Gas Analysis Measuring System Kazimierz Brudzewski

    E-Print Network [OSTI]

    Osowski, Stanislaw

    mixtures of air with these four pollutants. The signals obtained from the sensors have been processed using with hybrid neural network, can be used to determine the individual analyte concentrations in the mixture as pollutants: carbon oxide, methane, propane/buthane and methanol vapour. A small array of five semiconductor

  6. A Monolithic Microconcentrator Receiver For A Hybrid PV-Thermal System: Preliminary Performance

    E-Print Network [OSTI]

    ://solar.anu.edu.au Abstract: An innovative hybrid PV-thermal microconcentrator (MCT) system is being jointly developed by Chromasun Inc., San Jose, California, and at the Centre for Sustainable Energy Systems, Australian National University. The MCT aims to develop the small-scale, roof-top market for grid-integrated linear CPV systems

  7. A 20-SUN HYBRID PV-THERMAL LINEAR MICRO-CONCENTRATOR SYSTEM FOR URBAN ROOFTOP APPLICATIONS

    E-Print Network [OSTI]

    , ACT, Australia P. Le Livre 2 , M. Greaves 2 , A. Tanner 2 2 Chromasun Inc, San Jose, CA, United States of America ABSTRACT A unique, linear, low-concentration, hybrid `micro- concentrator' (MCT) system concept, system output of 500 Wpe and 2 kWpt is expected, for a combined system efficiency of up to 75%. The MCT

  8. A Hybrid Artificial Immune System and Self Organising Map for Network Intrusion

    E-Print Network [OSTI]

    Alvarez, Nadir

    A Hybrid Artificial Immune System and Self Organising Map for Network Intrusion Detection Simon T using an artificial immune system. Connections that are flagged as anoma- lous are then categorised://www.sciencedirect.com/science/article/pii/S0020025507005531.] Key words: Artificial immune system; Self Organizing Map; Intrusion detection; Genetic algorithm

  9. On the Averaging of a Class of Hybrid Systems Luigi Iannelli

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    that are excited by high-frequency external signals. These systems arise in the modeling of switched power analysis, as well as in numerical simulation and verification. Here we study a class of hybrid systems of engineering. For control system design, a good model is one that is complex enough to capture the important

  10. LQ Optimal Control of Wind Turbines in Hybrid Power Systems N.A. Cutululis1

    E-Print Network [OSTI]

    LQ Optimal Control of Wind Turbines in Hybrid Power Systems N.A. Cutululis1 , H. Bindner1 , I power systems represent a viable solution for rural electrification. One of the most important aspects taken into account for the design of a wind ­ diesel power system is the wind power penetration, which

  11. A Hybrid Feedback Regulator Approach to Control an Automotive Suspension System

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    A Hybrid Feedback Regulator Approach to Control an Automotive Suspension System Xenofon D synthe- sis approach using an automotive suspension system. Discrete abstrac- tions are used control synthesis is presented and an example of an automotive suspension system is used to illus- trate

  12. Stability Analysis of Hybrid Systems with a Linear Performance Index Frank J. Christophersen, Mato Baotic, and Manfred Morari

    E-Print Network [OSTI]

    Sontag, Eduardo

    optimal control (CFTOC) problem for the class of discrete-time linear hybrid systems. For a linear control (CITOC) problem with linear performance index for constrained PWA systems was recently presentedStability Analysis of Hybrid Systems with a Linear Performance Index Frank J. Christophersen, Mato

  13. Performance Optimization of Battery-Super Capacitor Hybrid System Electrochemical capacitors (ultracapacitors) offer high power density when compared to battery

    E-Print Network [OSTI]

    Popov, Branko N.

    Performance Optimization of Battery-Super Capacitor Hybrid System Electrochemical capacitors a decreased value of power and energy densities for the hybrid system. Figure 1shows the fractional capacity (ultracapacitors) offer high power density when compared to battery systems and also have a relatively large energy

  14. SIMULATION AND CONTROL OF HYBRID SYSTEMS WITH APPLICATIONS TO MOBILE ROBOTICS

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    SIMULATION AND CONTROL OF HYBRID SYSTEMS WITH APPLICATIONS TO MOBILE ROBOTICS Joel M. Esposito is particularly evident in mobile robotics because these systems typically have significant onboard computing and control of mobile robots is presented. It is our approach that reactive control and motion planning

  15. Adaptive Model Predictive Control of the Hybrid Dynamics of a Fuel Cell System.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Adaptive Model Predictive Control of the Hybrid Dynamics of a Fuel Cell System. M. Fiacchini, T operation of a fuel cell system is presented. The aim of the control design is to guarantee that the oxygen control to a fuel cell plant is presented. The fuel cell, located in the laboratory of the Department

  16. Dynamic Reconfiguration of Photovoltaic Energy Harvesting System in Hybrid Electric Vehicles

    E-Print Network [OSTI]

    Pedram, Massoud

    Dynamic Reconfiguration of Photovoltaic Energy Harvesting System in Hybrid Electric Vehicles Yanzhi, xuelin, pedram}@usc.edu, 2 {naehyuck}@elpl.snu.ac.kr ABSTRACT Photovoltaic (PV) energy harvesting system and Reliability]: Performance Analysis and Design Aids. General Terms Algorithms, Design, Management, Performance

  17. Modelling of Stochastic Hybrid Systems with Applications to Accident Risk Assessment

    E-Print Network [OSTI]

    Del Moral , Pierre

    Modelling of Stochastic Hybrid Systems with Applications to Accident Risk Assessment #12;The SYSTEMS WITH APPLICATIONS TO ACCIDENT RISK ASSESSMENT DISSERTATION to obtain the doctor's degree promotor Prof. dr. A. Bagchi #12;Contents 1 Introduction 3 1.1 Accident risk assessment

  18. Physics of Aquatic Systems II, 3. Stable Isotopes -Theory Universitt HeidelbergInstitut fr Umweltphysik Physics of Aquatic Systems II

    E-Print Network [OSTI]

    Aeschbach-Hertig, Werner

    ­ Notation and definitions ­ Origin and description of fractionation ­ Fractionating processes ­ Rayleigh distillation Literature: Mook Vol. I, ch. 3 and 4 Physics of Aquatic Systems II, 3. Stable Isotopes - Theory "concentration" or mixing ratio: Fractional abundance of given isotope relative to all isotopes of the element

  19. Physics of Aquatic Systems II, 9. Modeling Universitt HeidelbergInstitut fr Umweltphysik Physics of Aquatic Systems II

    E-Print Network [OSTI]

    Aeschbach-Hertig, Werner

    HeidelbergInstitut für Umweltphysik 5 Influence of mixing on transient gas tracer ages · 2-comp. mixing Mook, 2001 Example: Mixing of fast and slow runoff components in a river Physics of Aquatic Systems II, 9. Modeling Universität HeidelbergInstitut für Umweltphysik 10 Mixed reactor model (exponential

  20. A Stochastic Dynamic Principle for Hybrid Systems with Execution Delay and Decision Lags

    E-Print Network [OSTI]

    Aouchiche, K; Granato, Giovanni; Zidani, Hasnaa

    2012-01-01T23:59:59.000Z

    This work presents a stochastic dynamic programming (SDP) algorithm that aims at minimizing an economic criteria based on the total energy consumption of a range extender electric vehicle (REEV). This algorithm integrates information from the REEV's navigation system in order to obtain some information about future expected vehicle speed. The model of the vehicle's energetic system, which consists of a high-voltage (HV) battery, the main energy source, and an internal combustion engine (ICE), working as an auxiliary energy source), is written as a hybrid dynamical system and the associated optimization problem in the hybrid optimal control framework. The hybrid optimal control problem includes two important physical constraints on the ICE, namely, an activation delay and a decision lag. Three methods for the inclusion of such physical constraints are studied. After introducing the SDP algorithm formulation we comment on numerical results of the stochastic algorithm and its deterministic counterpart.

  1. Doppler reflectometer system in the stellarator TJ-II

    SciTech Connect (OSTI)

    Happel, T.; Estrada, T.; Blanco, E.; Tribaldos, V.; Cappa, A.; Bustos, A. [Laboratorio Nacional de Fusion, Asociacion Euratom-CIEMAT, 28040 Madrid (Spain)

    2009-07-15T23:59:59.000Z

    A Doppler reflectometer system has recently been installed in the stellarator TJ-II. The system is optimized for the Q-band (33-50 GHz) and the high-curvature plasmas produced in TJ-II. The launch angle of the microwave beam can be controlled by a steerable mirror to obtain angles between {+-}20 deg. enabling the measurement of perpendicular wave numbers in the range of 3-15 cm{sup -1}. The available angular range allows for comparisons between positive and negative values and additionally for calibration of the system. Localization and k{sub perpendicular}-estimation is done via the three-dimensional ray/beam-tracing code TRUBA. First measured spectra and radial profiles of the perpendicular velocity of plasma density fluctuations are presented.

  2. Preliminary Results on Luminaire Designs for Hybrid Solar Lighting Systems

    SciTech Connect (OSTI)

    Earl, D.D.

    2001-06-15T23:59:59.000Z

    We report on the design of two hybrid lighting luminaires that blend light from a fiber optic end-emitted solar source with electric T8 fluorescent lamps. Both designs involve the retrofit of a commercially-available recessed fluorescent luminaire with minimal reductions in the original luminaire's optical efficiency. Two methods for high-angle dispersion of fiber optic end-emitted solar light are described and the resulting spatial intensity distributions, simulated using ZEMAX, are compared with standard cylindrical fluorescent tubes. Differences in spatial intensity distribution are qualitatively characterized and potential design improvements discussed.

  3. Control system design for a parallel hybrid electric vehicle

    E-Print Network [OSTI]

    Buntin, David Leighton

    1994-01-01T23:59:59.000Z

    and possibly frequency settings. Finally, brake torque commands (Ts, ) must cause the appropriate displacement in the brake pads a. nd shoes. These considerations of the control requirements for the hybrid electric vehicle lead to the following need... of motion: =1 2 i' = (T + T ? Ts ? Tt) (rad)'sec ) J, q ('2. 1) Fquation 2. 1 leads to a definition of the drive shaft, speed (~) as the first state variable of tlie model. As it turiis out, Equation rhl is the mosi, dominant state equation...

  4. Amp-hour counting control for PV hybrid power systems

    SciTech Connect (OSTI)

    Hund, T.D. [Sandia National Labs., Albuquerque, NM (United States); Thompson, B. [Biri Systems, Ithaca, NY (United States)

    1997-06-01T23:59:59.000Z

    The performance of an amp-hour (Ah) counting battery charge control algorithm has been defined and tested using the Digital Solar Technologies MPR-9400 microprocessor based PV hybrid charge controller. This work included extensive field testing of the charge algorithm on flooded lead-antimony and valve regulated lead-acid (VRLA) batteries. The test results after one-year have demonstrated that PV charge utilization, battery charge control, and battery state of charge (SOC) has been significantly improved by providing maximum charge to the batteries while limiting battery overcharge to manufacturers specifications during variable solar resource and load periods.

  5. Hybrid Wind and Solar Electric Systems | Department of Energy

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you want toworldPowerHome| DepartmentPumpHome OfficeConsume?aYourHybrid

  6. Electron-State Hybridization in Heavy-Fermion Systems

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEAWater UseC Supports - Energy3Electron-State Hybridization

  7. Hybrid Wind and Solar Electric Systems | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking of Blythe Solar PowerCommercialEnergySandy-Nor'easterHybrid Wind and Solar

  8. Hybrid Membrane System for Industrial Water Reuse | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEND D e e pShade YourHybirdBraking SystemofHybrid

  9. Summary Report of the INL-JISEA Workshop on Nuclear Hybrid Energy Systems

    SciTech Connect (OSTI)

    Antkowiak, M.; Ruth, M.; Boardman, R.; Bragg-Sitton, S.; Cherry, R.; Shunn, L.

    2012-07-01T23:59:59.000Z

    The Institute for Nuclear Energy Science and Technology (INEST) and the Joint Institute for Strategic Energy Analysis (JISEA) co-sponsored an international workshop to identify research topics important in advancing the potential use of hybrid systems with a specific focus on nuclear-renewable hybrid systems. The workshop included presentations ranging from energy challenges and research and development directions being pursued by nations to multiple options for hybrid systems. Those options include one that is being commercialized to other opportunities and analysis results quantifying them. The workshop also involved two breakout sessions--one focused on thermal energy management issues especially at unit-operation scale and the second focused on system operations issues including system controls, regulatory issues, technical and economic analysis, and market challenges. A discussion involving the full group focused on more general issues such as societal involvement and participation. Key criteria for selecting hybrid energy system projects and metrics for comparing them were also identified by the full group.

  10. Combustion flame-plasma hybrid reactor systems, and chemical reactant sources

    DOE Patents [OSTI]

    Kong, Peter C

    2013-11-26T23:59:59.000Z

    Combustion flame-plasma hybrid reactor systems, chemical reactant sources, and related methods are disclosed. In one embodiment, a combustion flame-plasma hybrid reactor system comprising a reaction chamber, a combustion torch positioned to direct a flame into the reaction chamber, and one or more reactant feed assemblies configured to electrically energize at least one electrically conductive solid reactant structure to form a plasma and feed each electrically conductive solid reactant structure into the plasma to form at least one product is disclosed. In an additional embodiment, a chemical reactant source for a combustion flame-plasma hybrid reactor comprising an elongated electrically conductive reactant structure consisting essentially of at least one chemical reactant is disclosed. In further embodiments, methods of forming a chemical reactant source and methods of chemically converting at least one reactant into at least one product are disclosed.

  11. ADEC II Universal SCR Retrofit System for On-road and Off-road...

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

    ADEC II Universal SCR Retrofit System for On-road and Off-road Diesel Engines ADEC II Universal SCR Retrofit System for On-road and Off-road Diesel Engines Presentation given at...

  12. Design of Hybrid Distillation-Vapor Membrane Separation Systems. Jose A. Caballero*; Ignacio E. Grossmann **; Majid Keyvani+

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    Design of Hybrid Distillation-Vapor Membrane Separation Systems. Jose A. Caballero*; Ignacio E (ethane, propane) on a commercial scale is performed almost exclusively by cryogenic distillation to optimize and retrofit a hybrid separation system consisting of a distillation column and a parallel

  13. The Effect of PV Array Size and Battery Size on the Economics of PV/Diesel/Battery Hybrid RAPS Systems

    E-Print Network [OSTI]

    array on the performance for a diesel/battery/inverter/pv system. It seeks to determine whetherThe Effect of PV Array Size and Battery Size on the Economics of PV/Diesel/Battery Hybrid RAPS WA 6150 Abstract This paper focuses on pv/diesel/battery hybrid RAPS systems meeting loads above 50 k

  14. Statistical Learning for Optimal Control of Hybrid Systems Jorge Piovesan, Chaouki Abdallah, Magnus Egerstedt, Herbert Tanner and Yorai Wardi

    E-Print Network [OSTI]

    Egerstedt, Magnus

    inputs [3], and game theoretic approaches [18]. An alternative to classical methods is provided by statisStatistical Learning for Optimal Control of Hybrid Systems Jorge Piovesan, Chaouki Abdallah, Magnus for the optimization of hybrid systems' performance. The basic approach is to generate samples from the family

  15. SIMES: A Simulator for Hybrid Electrical Energy Storage Systems Siyu Yue, Di Zhu, Yanzhi Wang, and Massoud Pedram

    E-Print Network [OSTI]

    Pedram, Massoud

    SIMES: A Simulator for Hybrid Electrical Energy Storage Systems Siyu Yue, Di Zhu, Yanzhi Wang the value and usefulness of SIMES for designing energy-aware facili- ties and products. Keywords Hybrid State-of-the-art electrical energy storage (EES) systems are mainly homogeneous, i.e., they consist

  16. Positive exchange bias and upward magnetic relaxation in a Fe-film/CoO-nanoparticle hybrid system

    E-Print Network [OSTI]

    Krishnan, Kannan M.

    Positive exchange bias and upward magnetic relaxation in a Fe-film/CoO- nanoparticle hybrid system exchange bias and upward magnetic relaxation in a Fe-film/CoO-nanoparticle hybrid system Wei Zhang) Heat-induced damping modification in yttrium iron garnet/platinum hetero-structures Appl. Phys. Lett

  17. Load sharing operation of a 14kW photovoltaic/wind hybrid power system

    SciTech Connect (OSTI)

    Kim, S.; Kim, C. [Kongju National Univ., Chungnam (Korea, Republic of). Dept. of Electrical Engineering; Song, J.; Yu, G.; Jung, Y. [Korea Inst. of Energy Research, Taejon (Korea, Republic of). Photovoltaic Research Team

    1997-12-31T23:59:59.000Z

    In this paper, a design procedure for photovoltaic/wind hybrid power generation system is presented. The hybrid system is composed of a DC/DC converter for a photovoltaic energy conversion, a DC/DC converter for a wind energy conversion, a four switch IGBT inverter converting the combined DC power to the AC power and a backup power battery. Here, it is very important to select the desired battery size to meet the stable output and economic cost aspect since this system utilizes fluctuating and finite energy resource. The purpose of this paper is to develop a sizing method for the PV/Wind energy hybrid system with load sharing operation. The method demonstrates a simple tool to determine the desired battery size that satisfies the energy demand from the user with the photovoltaic and wind natural source. The proposed method is verified on a 14kW hybrid power system including a 10kW PV generator and a 4kW wind generator established in Cheju island, Korea.

  18. Recovery act: development of design and simulation tool for hybrid geothermal heat pump system

    SciTech Connect (OSTI)

    Wang, Shaojie

    2014-05-29T23:59:59.000Z

    The ground source heat pump (GSHP) system is one of the most energy efficient HVAC technologies in the current market. However, the heat imbalance may degrade the ability of the ground loop heat exchanger (GLHX) to absorb or reject heat. The hybrid GSHP system, which combines a geothermal well field with a supplemental boiler or cooling tower, can balance the loads imposed on the ground loop heat exchangers to minimize its size while retaining superior energy efficiency. This paper presents a recent simulation-based study with an intention to compare multiple common control strategies used in hybrid GSHP systems, including fixed setpoint, outside air reset, load reset, and wetbulb reset. A small office in Oklahoma City conditioned by a hybrid GSHP system was simulated with the latest version of eQUEST 3.7[1]. The simulation results reveal that the hybrid GSHP system has the excellent capability to meet the cooling and heating setpoints during the occupied hours, balance thermal loads on the ground loop, as well as improve the thermal comfort of the occupants with the undersized well field.

  19. Signal and System Theory II, BSc, Winter 2008 Automatic Control Laboratory D-ITET

    E-Print Network [OSTI]

    Lygeros, John

    Signal and System Theory II, BSc, Winter 2008 Automatic Control Laboratory D-ITET ETH Zurich Winter happens to the state as t using the final value theorem. 1 #12;Signal and System Theory II, BSc, Winter T seconds. Do you believe her? Justify your answer. 2 #12;Signal and System Theory II, BSc, Winter 2008

  20. A Policy Management System for Hybrid Networks N Vardalachos, J Rubio, A Galis and J Serrat

    E-Print Network [OSTI]

    Haddadi, Hamed

    management architecture devised for management of IP over WDM networks and is part of the work carried outA Policy Management System for Hybrid Networks N Vardalachos, J Rubio, A Galis and J Serrat University College London, Universitat Politècnica de Catalunya Abstract: The management of heterogeneous

  1. Optimization of hybrid-water/air-cooled condenser in an enhanced turbine geothermal ORC system

    Broader source: Energy.gov [DOE]

    DOE Geothermal Program Peer Review 2010 - Presentation. Project objective: To improve the efficiency and output variability of geothermal-based ORC power production systems with minimal water consumption by deploying: 1) a hybrid-water/air cooled condenser with low water consumption and 2) an enhanced turbine with high efficiency.

  2. Charge Migration Efficiency Optimization in Hybrid Electrical Energy Storage (HEES) Systems

    E-Print Network [OSTI]

    Pedram, Massoud

    Charge Migration Efficiency Optimization in Hybrid Electrical Energy Storage (HEES) Systems the excessive electric energy in the electrical energy storage (EES) rather than converting into a different) are typically not balanced with each other. Storage of excessive en- ergy and compensation of the energy

  3. Optimal Energy Management for a Hybrid Energy Storage System for Electric Vehicles Based on

    E-Print Network [OSTI]

    Paderborn, Universität

    Optimal Energy Management for a Hybrid Energy Storage System for Electric Vehicles Based are used as energy storage. The size of the battery depends not only on the driving range, but also Deterministic Dynamic Programming. To determine an energy management to control the power flows to the storage

  4. Journal of Power Sources 134 (2004) 130138 Performance optimization of a batterycapacitor hybrid system

    E-Print Network [OSTI]

    Popov, Branko N.

    2004-01-01T23:59:59.000Z

    -ion battery with commercial super capacitors using impedance measurement were car- ried out by Chu and Braatz and the battery system were compared under a similar set of operating parameters. 2. Experimental A Sony US 18650Journal of Power Sources 134 (2004) 130­138 Performance optimization of a battery­capacitor hybrid

  5. GAS ANALYSIS SYSTEM COMPOSED OF A SOLID-STATE SENSOR ARRAY AND HYBRID NEURAL NETWORK

    E-Print Network [OSTI]

    Osowski, Stanislaw

    1 GAS ANALYSIS SYSTEM COMPOSED OF A SOLID-STATE SENSOR ARRAY AND HYBRID NEURAL NETWORK STRUCTURE of the solid state sensor array used for the gas analysis. The applied neural network is composed of two parts of the gas components. The obtained results have shown that the array of partially selective sensors

  6. Hybrid Control of Parabolic PDE Systems Nael H. El-Farra and Panagiotis D. Christofides

    E-Print Network [OSTI]

    Sontag, Eduardo

    - tinguishing feature of distributed control problems is that they involve the regulation of distributed on the synthesis of nonlinear low-order controllers on the basis of ODE models obtained through combinationHybrid Control of Parabolic PDE Systems Nael H. El-Farra and Panagiotis D. Christofides Department

  7. Center for Sustainability Hybrid Renewable Energy Systems (HyRES) Laboratory

    E-Print Network [OSTI]

    Lee, Dongwon

    is powered by a redundant hybrid system including solar and wind power, and is grid connected. Net metering is used to balance energy use, and surplus power used to make hydrogen for a fuel cell vehicle. Power - Net metered grid connection Back-up Mode: In rare cases when the sun, wind, and grid power

  8. Designing a Residential Hybrid Electrical Energy Storage System Based on the Energy Buffering Strategy

    E-Print Network [OSTI]

    Pedram, Massoud

    such as the Consolidated Edison Company of New York (conEdison) employ time-of-day pricing policy [2], with higher unitDesigning a Residential Hybrid Electrical Energy Storage System Based on the Energy Buffering companies generally raise electrical energy price during periods of high load demand. A grid

  9. Fault tree construction of hybrid system requirements using qualitative formal method

    E-Print Network [OSTI]

    Institute, 150, Duckjin-dong, Yuseong-gu, Daejeon 305-353, South Korea b Computer Science Division, EECS Department and Advanced Information Technology Research Center (AITrc), Korea Advanced Institute of Science specifying requirements for software controlling hybrid systems and conducting safety analysis, engineers

  10. Stresa, Italy, 26-28 April 2006 THERMOELECTRIC AND MICROBATTERY HYBRID SYSTEM WITH ITS POWER

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    change depending on the outside conditions) and required by the thin film solid state battery developed. It consists in hybriding an energy storage system (thin film solid state battery control charge of the battery by the thermogenerator and discharge of the battery by the load, i

  11. Hybrid GA-SA Algorithms for Reducing Energy Consumption in Embedded Systems

    E-Print Network [OSTI]

    Schott, René - Institut de Mathématiques �lie Cartan, Université Henri Poincaré

    Hybrid GA-SA Algorithms for Reducing Energy Consumption in Embedded Systems Maha IDRISSI AOUAD Vandoeuvre-L`es-Nancy, France. Email: Rene.Schott@loria.fr Abstract--Reducing energy consumption in embedded algorithms based on Simulated An- nealing (SA) and Genetic Algorithm (GA) for reducing energy consumption

  12. TRNSYS MODELING OF A HYBRID LIGHTING SYSTEM: BUILDING ENERGY LOADS AND CHROMATICITY ANALYSIS

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    TRNSYS MODELING OF A HYBRID LIGHTING SYSTEM: BUILDING ENERGY LOADS AND CHROMATICITY ANALYSIS Frank-Solar Energy Laboratory 1500 Engineering Drive Madison, WI, 53706 USA fwburkholder@wisc.edu ABSTRACT The TRNSYS of the spectral model was necessary to perform building illumination and energy load analyses on a 2500 m2 office

  13. Battery-Supercapacitor Hybrid System for High-Rate Pulsed Load Applications

    E-Print Network [OSTI]

    Pedram, Massoud

    Battery-Supercapacitor Hybrid System for High-Rate Pulsed Load Applications Donghwa Shin, Younghyun layer capacitors, or simply supercapacitors, have extremely low internal resistance, and a battery-supercapacitor architecture comprising a simple parallel connection does not perform well when the supercapacitor capacity

  14. A Hybrid Systems Model for Power Control in Multicell Wireless Data Networks

    E-Print Network [OSTI]

    Boyer, Edmond

    A Hybrid Systems Model for Power Control in Multicell Wireless Data Networks Tansu Alpcan 1 of other users can be modeled as interfering noise signals, the goal of power control is more precisely and Tamer Bas¸ar 1 (alpcan, tbasar)@control.csl.uiuc.edu Abstract-- We present a power control scheme based

  15. Modeling and Control of SMT Manufacturing Lines Using Hybrid Dynamic Systems

    E-Print Network [OSTI]

    Egerstedt, Magnus

    Modeling and Control of SMT Manufacturing Lines Using Hybrid Dynamic Systems L.G. Barajas1 , A in Surface Mount Technology (SMT) manufacturing. In particular, by closing the loop over the stencil printing of the approach is verified on a real SMT manufacturing line. 1 Introduction To close the loop around the Stencil

  16. Optimizing a Hybrid Energy Storage System for a Virtual Power Plant for Improved Wind Power

    E-Print Network [OSTI]

    Teodorescu, Remus

    . Possibilities to overcome this problem are to increase transmission capacities, demand side management approach to find two optimum energy storages (ESs) to build a hybrid system which is part of a virtual and the EU renewable directive [1] is even demanding for even higher rates of renewable power generation

  17. Modular hybrid pier : fender system short term tests

    E-Print Network [OSTI]

    Lee, Jerry Jing Peng

    2008-01-01T23:59:59.000Z

    Lateral restraint system provided in this testing program was effective to prevent sidesway buckling

  18. Hybrid lean premixing catalytic combustion system for gas turbines

    DOE Patents [OSTI]

    Critchley, Ian L.

    2003-12-09T23:59:59.000Z

    A system and method of combusting a hydrocarbon fuel is disclosed. The system combines the accuracy and controllability of an air staging system with the ultra-low emissions achieved by catalytic combustion systems without the need for a pre-heater. The result is a system and method that is mechanically simple and offers ultra-low emissions over a wide range of power levels, fuel properties and ambient operating conditions.

  19. Hybrid metal organic scintillator materials system and particle detector

    DOE Patents [OSTI]

    Bauer, Christina A.; Allendorf, Mark D.; Doty, F. Patrick; Simmons, Blake A.

    2011-07-26T23:59:59.000Z

    We describe the preparation and characterization of two zinc hybrid luminescent structures based on the flexible and emissive linker molecule, trans-(4-R,4'-R') stilbene, where R and R' are mono- or poly-coordinating groups, which retain their luminescence within these solid materials. For example, reaction of trans-4,4'-stilbenedicarboxylic acid and zinc nitrate in the solvent dimethylformamide (DMF) yielded a dense 2-D network featuring zinc in both octahedral and tetrahedral coordination environments connected by trans-stilbene links. Similar reaction in diethylformamide (DEF) at higher temperatures resulted in a porous, 3-D framework structure consisting of two interpenetrating cubic lattices, each featuring basic to zinc carboxylate vertices joined by trans-stilbene, analogous to the isoreticular MOF (IRMOF) series. We demonstrate that the optical properties of both embodiments correlate directly with the local ligand environments observed in the crystal structures. We further demonstrate that these materials produce high luminescent response to proton radiation and high radiation tolerance relative to prior scintillators. These features can be used to create sophisticated scintillating detection sensors.

  20. PHASE II VAULT TESTING OF THE ARGONNE RFID SYSTEM

    SciTech Connect (OSTI)

    Willoner, T.; Turlington, R.; Koenig, R.

    2012-06-25T23:59:59.000Z

    The U.S. Department of Energy (DOE) (Environmental Management [EM], Office of Packaging and Transportation [EM-45]) Packaging and Certification Program (DOE PCP) has developed a Radio Frequency Identification (RFID) tracking and monitoring system, called ARG-US, for the management of nuclear materials packages during transportation and storage. The performance of the ARG-US RFID equipment and system has been fully tested in two demonstration projects in April 2008 and August 2009. With the strong support of DOE-SR and DOE PCP, a field testing program was completed in Savannah River Site's K-Area Material Storage (KAMS) Facility, an active Category I Plutonium Storage Facility, in 2010. As the next step (Phase II) of continued vault testing for the ARG-US system, the Savannah River Site K Area Material Storage facility has placed the ARG-US RFIDs into the 910B storage vault for operational testing. This latest version (Mark III) of the Argonne RFID system now has the capability to measure radiation dose and dose rate. This paper will report field testing progress of the ARG-US RFID equipment in KAMS, the operability and reliability trend results associated with the applications of the system, and discuss the potential benefits in enhancing safety, security and materials accountability. The purpose of this Phase II K Area test is to verify the accuracy of the radiation monitoring and proper functionality of the ARG-US RFID equipment and system under a realistic environment in the KAMS facility. Deploying the ARG-US RFID system leads to a reduced need for manned surveillance and increased inventory periods by providing real-time access to status and event history traceability, including environmental condition monitoring and radiation monitoring. The successful completion of the testing program will provide field data to support a future development and testing. This will increase Operation efficiency and cost effectiveness for vault operation. As the next step (Phase II) of continued vault testing for the ARG-US system, the Savannah River Site K Area Material Storage facility has placed the ARG-US RFIDs into the 910B storage vault. Deploying the ARG-US RFID system lends to a reduced need for manned surveillance and increased inventory periods by providing real-time access to status and event history traceability, including radiation and environmental monitoring. The successful completion of the testing program will provide field data to support future development and testing.

  1. Hybrid powertrain system including smooth shifting automated transmission

    DOE Patents [OSTI]

    Beaty, Kevin D.; Nellums, Richard A.

    2006-10-24T23:59:59.000Z

    A powertrain system is provided that includes a prime mover and a change-gear transmission having an input, at least two gear ratios, and an output. The powertrain system also includes a power shunt configured to route power applied to the transmission by one of the input and the output to the other one of the input and the output. A transmission system and a method for facilitating shifting of a transmission system are also provided.

  2. 2 15.10.2013 Van D. BaxterVolker Weinmann Hybrid heat pump system as chance for the

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    #12;2 15.10.2013 Van D. BaxterVolker Weinmann Hybrid heat pump system as chance for the renovation pumps Condensing gas and oil boilers DHW tanks Solar panels Under floor heating Installation equipment The solution: hybrid heat pumps Selection and installation Installer benefits Consumer benefits Summary Agenda

  3. Berry phase and Hannay’s angle in the Born–Oppenheimer hybrid systems

    SciTech Connect (OSTI)

    Liu, H.D. [National Laboratory of Science and Technology on Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China)] [National Laboratory of Science and Technology on Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); Yi, X.X. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)] [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); Fu, L.B., E-mail: lbfu.iapcm@gmail.com [National Laboratory of Science and Technology on Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100084 (China)

    2013-12-15T23:59:59.000Z

    In this paper, we investigate the Berry phase and Hannay’s angle in the Born–Oppenheimer (BO) hybrid systems and obtain their algebraic expressions in terms of one form connection. The semiclassical relation of Berry phase and Hannay’s angle is discussed. We find that, besides the usual connection term, the Berry phase of quantum BO composite system also contains a novel term brought forth by the coupling induced effective gauge potential. This quantum modification can be viewed as an effective Aharonov–Bohm effect. Moreover, the similar phenomenon is founded in Hannay’s angle of classical BO composite system, which indicates that the Berry phase and Hannay’s angle possess the same relation as the usual one. An example is used to illustrate our theory. This scheme can be used to generate artificial gauge potentials for neutral atoms. Besides, the quantum–classical hybrid BO system is also studied to compare with the results in full quantum and full classical composite systems. -- Highlights: •We have derived the Berry phase and Hannay’s angle in BO hybrid systems. •The Berry phase contains a novel term brought by the effective gauge potential. •This mechanism can be used to generate artificial gauge potentials for neutral atoms. •The relation between Hannay’s angles and Berry phases is established.

  4. Earth System Grid II, Turning Climate Datasets into Community Resources

    SciTech Connect (OSTI)

    Middleton, Don

    2006-08-01T23:59:59.000Z

    The Earth System Grid (ESG) II project, funded by the Department of Energy’s Scientific Discovery through Advanced Computing program, has transformed climate data into community resources. ESG II has accomplished this goal by creating a virtual collaborative environment that links climate centers and users around the world to models and data via a computing Grid, which is based on the Department of Energy’s supercomputing resources and the Internet. Our project’s success stems from partnerships between climate researchers and computer scientists to advance basic and applied research in the terrestrial, atmospheric, and oceanic sciences. By interfacing with other climate science projects, we have learned that commonly used methods to manage and remotely distribute data among related groups lack infrastructure and under-utilize existing technologies. Knowledge and expertise gained from ESG II have helped the climate community plan strategies to manage a rapidly growing data environment more effectively. Moreover, approaches and technologies developed under the ESG project have impacted datasimulation integration in other disciplines, such as astrophysics, molecular biology and materials science.

  5. Farshid Zabihian, Alan Fung A Review on Modeling of Hybrid Solid Oxide Fuel Cell Systems

    E-Print Network [OSTI]

    Farshid Zabihian; Alan Fung

    Over the past 2 decades, there has been tremendous progress on numerical and computational tools for fuel cells and energy systems based on them. The purpose of this work is to summarize the current status of hybrid solid oxide fuel cell (SOFC) cycles and identify areas that require further studies. In this review paper, a comprehensive literature survey on different types of SOFC hybrid systems modeling is presented. The paper has three parts. First, it describes the importance of the fuel cells modeling especially in SOFC hybrid cycles. Key features of the fuel cell models are highlighted and model selection criteria are explained. In the second part, the models in the open literature are categorized and discussed. It includes discussion on a detail example of SOFCgas turbine cycle model, description of early models, models with different objectives such as parametric analysis, comparison of configurations, exergy analysis, optimization, non-stationary power generation applications, transient and off-design analysis, thermoeconomic analysis and so on. Finally, in the last section, key features of selected models are summarized and suggestions for areas that require further studies are presented. In this paper, a hybrid cycle can be any combination of SOFC and gas turbine, steam turbine, coal integrated gasification, and application in combined heat and power cycle.

  6. Critical issues in the development of hybrid solar/gas receivers for dish/Stirling systems

    SciTech Connect (OSTI)

    Adkins, D.R.; Rawlinson, K.S.

    1991-01-01T23:59:59.000Z

    A hybrid solar/gas receiver system will allow Stirling engines to operate with combined solar and gas power sources. One of the most attractive options for building a hybrid system is to integrate a gas-fired heat pipe directly into a heat-pipe solar receiver. Before this union can take place, however, a number of technical issues must be resolved. A design must be found that properly distributes the heat-pipe's working fluid over the heated surfaces and prevents fluid from accumulating at undesirable locations in the heat pipe. Experience that has been gained in developing solar receivers and gas-fired heat pipes under recent Department of Energy solar-thermal dish-electric programs is used in this paper to address many of the technical obstacles to building receiver systems. 16 refs.

  7. A hybrid data acquisition system for magnetic measurements of accelerator magnets

    SciTech Connect (OSTI)

    Wang, X.; Hafalia, R.; Joseph, J.; Lizarazo, J.; Martchevsky, M.; Sabbi, G. L.

    2011-06-03T23:59:59.000Z

    A hybrid data acquisition system was developed for magnetic measurement of superconducting accelerator magnets at LBNL. It consists of a National Instruments dynamic signal acquisition (DSA) card and two Metrolab fast digital integrator (FDI) cards. The DSA card records the induced voltage signals from the rotating probe while the FDI cards records the flux increment integrated over a certain angular step. This allows the comparison of the measurements performed with two cards. In this note, the setup and test of the system is summarized. With a probe rotating at a speed of 0.5 Hz, the multipole coefficients of two magnets were measured with the hybrid system. The coefficients from the DSA and FDI cards agree with each other, indicating that the numerical integration of the raw voltage acquired by the DSA card is comparable to the performance of the FDI card in the current measurement setup.

  8. Hybrid robust predictive optimization method of power system dispatch

    DOE Patents [OSTI]

    Chandra, Ramu Sharat (Niskayuna, NY); Liu, Yan (Ballston Lake, NY); Bose, Sumit (Niskayuna, NY); de Bedout, Juan Manuel (West Glenville, NY)

    2011-08-02T23:59:59.000Z

    A method of power system dispatch control solves power system dispatch problems by integrating a larger variety of generation, load and storage assets, including without limitation, combined heat and power (CHP) units, renewable generation with forecasting, controllable loads, electric, thermal and water energy storage. The method employs a predictive algorithm to dynamically schedule different assets in order to achieve global optimization and maintain the system normal operation.

  9. Computing Flowpipe of Nonlinear Hybrid Systems with Numerical Methods

    E-Print Network [OSTI]

    Boyer, Edmond

    ParisTech, Palaiseau France January 2013 Abstract Modern control-command systems often include controllers that perform nonlinear computations to control a physical system, which can typically be described of the techniques developed in this article are given on representative examples. 1 Introduction Modern control

  10. Hybrid Energy Storage System Integration For Vehicles , Hai Zhou

    E-Print Network [OSTI]

    Zhou, Hai

    . Existing in-vehicle Lithium-ion battery systems are bulky, expensive, and unre- liable. Energy storage- plementary energy storage technologies, e.g., Lithium-ion batteries and ultracapacitors. Using physical- sign General Terms Algorithms, Design, Experimentation Keywords Energy Storage System, Battery

  11. Hybrid, Optical and Wireless Near-Gigabit Communications System

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    affect the system design. Problems such as power amplifier (PA) non-linearity and oscillator phase noise. A single carrier architecture is adopted. The system uses low complexity baseband processing modules. A byte/frame synchronization technique is designed to provide a high value of the preamble detection

  12. Multiagent Systems with Hybrid Interacting Jorge Luis Piovesan Pedraza

    E-Print Network [OSTI]

    ", Electronic Systems Engineering, Military School of Engineering, La Paz Bolivia, 2002 M.S., Electrical words that made me pick myself up after numerous falls. To my families in Bolivia, the Piovesan Pedraza "Licenciado", Electronic Systems Engineering, Military School of Engineering, La Paz Bolivia, 2002 M

  13. Optimal Design of a Stand-Alone Hybrid PV/Fuel Cell Power System for the City of Brest in France

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , energy cost, HOMER. Nomenclature HOMER = Hybrid Optimization Model for Electric Renewables; PV as a secondary source of energy [18-19]. For such king of hybrid power systems, the sources can be optimallyOptimal Design of a Stand-Alone Hybrid PV/Fuel Cell Power System for the City of Brest in France

  14. Reactor Subsystem Simulation for Nuclear Hybrid Energy Systems

    SciTech Connect (OSTI)

    Shannon Bragg-Sitton; J. Michael Doster; Alan Rominger

    2012-09-01T23:59:59.000Z

    Preliminary system models have been developed by Idaho National Laboratory researchers and are currently being enhanced to assess integrated system performance given multiple sources (e.g., nuclear + wind) and multiple applications (i.e., electricity + process heat). Initial efforts to integrate a Fortran-based simulation of a small modular reactor (SMR) with the balance of plant model have been completed in FY12. This initial effort takes advantage of an existing SMR model developed at North Carolina State University to provide initial integrated system simulation for a relatively low cost. The SMR subsystem simulation details are discussed in this report.

  15. Hybrid membrane--PSA system for separating oxygen from air

    DOE Patents [OSTI]

    Staiger, Chad L. (Albuquerque, NM); Vaughn, Mark R. (Albuquerque, NM); Miller, A. Keith (Albuquerque, NM); Cornelius, Christopher J. (Blackburg, VA)

    2011-01-25T23:59:59.000Z

    A portable, non-cryogenic, oxygen generation system capable of delivering oxygen gas at purities greater than 98% and flow rates of 15 L/min or more is described. The system consists of two major components. The first component is a high efficiency membrane capable of separating argon and a portion of the nitrogen content from air, yielding an oxygen-enriched permeate flow. This is then fed to the second component, a pressure swing adsorption (PSA) unit utilizing a commercially available, but specifically formulated zeolite compound to remove the remainder of the nitrogen from the flow. The system is a unique gas separation system that can operate at ambient temperatures, for producing high purity oxygen for various applications (medical, refining, chemical production, enhanced combustion, fuel cells, etc . . . ) and represents a significant advance compared to current technologies.

  16. Estimation Strategies for Constrained and Hybrid Dynamical Systems

    E-Print Network [OSTI]

    Parish, Julie Marie Jones

    2012-10-19T23:59:59.000Z

    finite- and infinite-dimensional coordinates. The associated governing equations are integro-partial differential equations. As with constrained systems, these governing equations must be transformed in order to employ the CDEKF. Here, this transformation...

  17. An Analysis of Hybrid Life Support Systems for Sustainable Habitats

    E-Print Network [OSTI]

    Shaw, Margaret Miller

    2014-01-01T23:59:59.000Z

    The design of sustainable habitats on Earth, on other planetary surfaces, and in space, has motivated strategic planning with respect to life support (LS) system technology development and habitat design. Such planning ...

  18. Fast time domain simulation for large order hybrid systems

    E-Print Network [OSTI]

    Sou, Kin Cheong, 1979-

    2002-01-01T23:59:59.000Z

    Simulation is an important tool for the analysis and design of complex systems. As the models become more and more complex, more powerful simulation methods are desired. As an attempt to address this problem, a simulation ...

  19. Shooting Methods for Locating Grazing Phenomena in Hybrid Systems

    E-Print Network [OSTI]

    electronics [Rajaraman et al., 1996; Yuan et al., 1998]. In fact any physical device that exhibits hysteresis parameter change necessary to induce grazing. Examples are drawn from power electronics, power systems

  20. A hybrid inventory management system respondingto regular demand and surge demand

    SciTech Connect (OSTI)

    Mohammad S. Roni; Mingzhou Jin; Sandra D. Eksioglu

    2014-06-01T23:59:59.000Z

    This paper proposes a hybrid policy for a stochastic inventory system facing regular demand and surge demand. The combination of two different demand patterns can be observed in many areas, such as healthcare inventory and humanitarian supply chain management. The surge demand has a lower arrival rate but higher demand volume per arrival. The solution approach proposed in this paper incorporates the level crossing method and mixed integer programming technique to optimize the hybrid inventory policy with both regular orders and emergency orders. The level crossing method is applied to obtain the equilibrium distributions of inventory levels under a given policy. The model is further transformed into a mixed integer program to identify an optimal hybrid policy. A sensitivity analysis is conducted to investigate the impact of parameters on the optimal inventory policy and minimum cost. Numerical results clearly show the benefit of using the proposed hybrid inventory model. The model and solution approach could help healthcare providers or humanitarian logistics providers in managing their emergency supplies in responding to surge demands.

  1. LiCl Dehumidifier LiBr absorption chiller hybrid air conditioning system with energy recovery

    DOE Patents [OSTI]

    Ko, Suk M. (Huntsville, AL)

    1980-01-01T23:59:59.000Z

    This invention relates to a hybrid air conditioning system that combines a solar powered LiCl dehumidifier with a LiBr absorption chiller. The desiccant dehumidifier removes the latent load by absorbing moisture from the air, and the sensible load is removed by the absorption chiller. The desiccant dehumidifier is coupled to a regenerator and the desiccant in the regenerator is heated by solar heated hot water to drive the moisture therefrom before being fed back to the dehumidifier. The heat of vaporization expended in the desiccant regenerator is recovered and used to partially preheat the driving fluid of the absorption chiller, thus substantially improving the overall COP of the hybrid system.

  2. Hybrid Parallelism for Volume Rendering on Large, Multi-core Systems

    SciTech Connect (OSTI)

    Howison, Mark; Bethel, E. Wes; Childs, Hank

    2010-07-12T23:59:59.000Z

    This work studies the performance and scalability characteristics of"hybrid'"parallel programming and execution as applied to raycasting volume rendering -- a staple visualization algorithm -- on a large, multi-core platform. Historically, the Message Passing Interface (MPI) has become the de-facto standard for parallel programming and execution on modern parallel systems. As the computing industry trends towards multi-core processors, with four- and six-core chips common today and 128-core chips coming soon, we wish to better understand how algorithmic and parallel programming choices impact performance and scalability on large, distributed-memory multi-core systems. Our findings indicate that the hybrid-parallel implementation, at levels of concurrency ranging from 1,728 to 216,000, performs better, uses a smaller absolute memory footprint, and consumes less communication bandwidth than the traditional, MPI-only implementation.

  3. MPI-hybrid Parallelism for Volume Rendering on Large, Multi-core Systems

    SciTech Connect (OSTI)

    Howison, Mark; Bethel, E. Wes; Childs, Hank

    2010-03-20T23:59:59.000Z

    This work studies the performance and scalability characteristics of"hybrid'" parallel programming and execution as applied to raycasting volume rendering -- a staple visualization algorithm -- on a large, multi-core platform. Historically, the Message Passing Interface (MPI) has become the de-facto standard for parallel programming and execution on modern parallel systems. As the computing industry trends towards multi-core processors, with four- and six-core chips common today and 128-core chips coming soon, we wish to better understand how algorithmic and parallel programming choices impact performance and scalability on large, distributed-memory multi-core systems. Our findings indicate that the hybrid-parallel implementation, at levels of concurrency ranging from 1,728 to 216,000, performs better, uses a smaller absolute memory footprint, and consumes less communication bandwidth than the traditional, MPI-only implementation.

  4. Hybrid Parallelism for Volume Rendering on Large, Multi-core Systems

    SciTech Connect (OSTI)

    Howison, Mark; Bethel, E. Wes; Childs, Hank

    2010-06-14T23:59:59.000Z

    This work studies the performance and scalability characteristics of"hybrid" parallel programming and execution as applied to raycasting volume rendering -- a staple visualization algorithm -- on a large, multi-core platform. Historically, the Message Passing Interface (MPI) has become the de-facto standard for parallel programming and execution on modern parallel systems. As the computing industry trends towards multi-core processors, with four- and six-core chips common today and 128-core chips coming soon, we wish to better understand how algorithmic and parallel programming choices impact performance and scalability on large, distributed-memory multi-core systems. Our findings indicate that the hybrid-parallel implementation, at levels of concurrency ranging from 1,728 to 216,000, performs better, uses a smaller absolute memory footprint, and consumes less communication bandwidth than the traditional, MPI-only implementation.

  5. Tailoring double Fano profiles with plasmon-assisted quantum interference in hybrid exciton-plasmon system

    SciTech Connect (OSTI)

    Zhao, Dongxing; Wu, Jiarui [State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871 (China); Gu, Ying, E-mail: ygu@pku.edu.cn; Gong, Qihuang [State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871 (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)

    2014-09-15T23:59:59.000Z

    We propose tailoring of the double Fano profiles via plasmon-assisted quantum interference in a hybrid exciton-plasmon system. Tailoring is performed by the interference between two exciton channels interacting with a common localized surface plasmon. Using an applied field of low intensity, the absorption spectrum of the hybrid system reveals a double Fano lineshape with four peaks. For relatively large field intensity, a broad flat window in the absorption spectrum appears which results from the destructive interference between excitons. Because of strong constructive interference, this window vanishes as intensity is further increased. We have designed a nanometer bandpass optical filter for visible light based on tailoring of the optical spectrum. This study provides a platform for quantum interference that may have potential applications in ultracompact tunable quantum devices.

  6. Hybrid GPS-GSM Localization of Automobile Tracking System

    E-Print Network [OSTI]

    Al-Khedher, Mohammad A

    2012-01-01T23:59:59.000Z

    An integrated GPS-GSM system is proposed to track vehicles using Google Earth application. The remote module has a GPS mounted on the moving vehicle to identify its current position, and to be transferred by GSM with other parameters acquired by the automobile's data port as an SMS to a recipient station. The received GPS coordinates are filtered using a Kalman filter to enhance the accuracy of measured position. After data processing, Google Earth application is used to view the current location and status of each vehicle. This goal of this system is to manage fleet, police automobiles distribution and car theft cautions.

  7. Comparison of four procedures for the identification of hybrid systems

    E-Print Network [OSTI]

    Engineering, Eindhoven University of Technology PO Box 513, 5600MB Eindhoven, The Netherlands, e-mail: a.juloski@tue.nl 2 Embedded Systems Institute, PO Box 513, 5600 MB Eindhoven, The Netherlands e-mail: maurice@dii.unisi.it 6 Nyquist, Industrial Control, P.O. Box 7170, 5605 JD Eindhoven, The Netherlands e-mail: h

  8. Power System Level Impacts of Plug-In Hybrid Vehicles

    E-Print Network [OSTI]

    (PSERC) is a multi-university Center conducting research on challenges facing the electric power industry to the electric power industry. The impact of PHEVs on the power grid is investigated. The methodology electric and gas, (b) simulation of the electric infrastructure (distribution systems) and the loading

  9. A notion of passivity for hybrid systems Milos Zefran

    E-Print Network [OSTI]

    Sontag, Eduardo

    on linear circuit the- ory was used for stability analysis in [7]. The most general stability results of hap- tic displays interacting with linear [5] and passive [6] en- vironments. Passivity analysis based Introduction In this paper we are primarily concerned with the stability analysis of systems that involve

  10. Functional Speci cation of Real-Time and Hybrid Systems ?

    E-Print Network [OSTI]

    of embedded real-time systems in a physical environment. Recently, a number of description and spec- i cationSys" and by BMW (Bay- erische Motoren Werke AG). #12;slight modi cations must be carried through, so, or sent to, the environment. Therefore, every channel re ects an input or output communication history

  11. Renewable energy powered membrane technology. 2. The effect of energy fluctuations on performance of a photovoltaic hybrid membrane system 

    E-Print Network [OSTI]

    Richards, B.S.; Capão, D.P.S.; Schäfer, Andrea

    2008-01-01T23:59:59.000Z

    This paper reports on the performance fluctuations during the operation of a batteryless hybrid ultrafiltration – nanofiltration / reverse osmosis (UF-NF/RO) membrane desalination system powered by photovoltaics treating ...

  12. Performance of a small solar-powered hybrid membrane system for remote communities under varying feedwater salinities 

    E-Print Network [OSTI]

    Schäfer, Andrea; Remy, C.; Richards, B.S.

    2004-01-01T23:59:59.000Z

    An estimated 1 billion people are living both without access to clean drinking water or electricity. The small photovoltaic (PV)-powered hybrid membrane system described here is designed to address the plight of some ...

  13. An Excursion-Theoretic Approach to Stability of Discrete-Time Stochastic Hybrid Systems

    SciTech Connect (OSTI)

    Chatterjee, Debasish, E-mail: chatterjee@control.ee.ethz.ch [ETH Zuerich, ETL I19 (Switzerland); Pal, Soumik, E-mail: soumik@math.washington.edu [University of Washington, Department of Mathematics (United States)

    2011-04-15T23:59:59.000Z

    We address stability of a class of Markovian discrete-time stochastic hybrid systems. This class of systems is characterized by the state-space of the system being partitioned into a safe or target set and its exterior, and the dynamics of the system being different in each domain. We give conditions for L{sub 1}-boundedness of Lyapunov functions based on certain negative drift conditions outside the target set, together with some more minor assumptions. We then apply our results to a wide class of randomly switched systems (or iterated function systems), for which we give conditions for global asymptotic stability almost surely and in L{sub 1}. The systems need not be time-homogeneous, and our results apply to certain systems for which functional-analytic or martingale-based estimates are difficult or impossible to get.

  14. Methods of chemically converting first materials to second materials utilizing hybrid-plasma systems

    DOE Patents [OSTI]

    Kong, Peter C. (Idaho Falls, ID); Grandy, Jon D. (Idaho Falls, ID)

    2002-01-01T23:59:59.000Z

    In one aspect, the invention encompasses a method of chemically converting a first material to a second material. A first plasma and a second plasma are formed, and the first plasma is in fluid communication with the second plasma. The second plasma comprises activated hydrogen and oxygen, and is formed from a water vapor. A first material is flowed into the first plasma to at least partially ionize at least a portion of the first material. The at least partially ionized first material is flowed into the second plasma to react at least some components of the first material with at least one of the activated hydrogen and activated oxygen. Such converts at least some of the first material to a second material. In another aspect, the invention encompasses a method of forming a synthetic gas by flowing a hydrocarbon-containing material into a hybrid-plasma system. In yet another aspect, the invention encompasses a method of degrading a hydrocarbon-containing material by flowing such material into a hybrid-plasma system. In yet another aspect, the invention encompasses a method of releasing an inorganic component of a complex comprising the inorganic component and an other component, wherein the complex is flowed through a hybrid-plasma system.

  15. COMPARATIVE STUDY AMONG HYBRID GROUND SOURCE HEAT PUMP SYSTEM, COMPLETE GROUND SOURCE HEAT PUMP AND CONVENTIONAL HVAC SYSTEM

    SciTech Connect (OSTI)

    Jiang Zhu; Yong X. Tao

    2011-11-01T23:59:59.000Z

    In this paper, a hotel with hybrid geothermal heat pump system (HyGSHP) in the Pensacola is selected and simulated by the transient simulation software package TRNSYS [1]. To verify the simulation results, the validations are conducted by using the monthly average entering water temperature, monthly facility consumption data, and etc. And three types of HVAC systems are compared based on the same building model and HVAC system capacity. The results are presented to show the advantages and disadvantages of HyGSHP compared with the other two systems in terms of energy consumptions, life cycle cost analysis.

  16. Blade System Design Study. Part II, final project report (GEC).

    SciTech Connect (OSTI)

    Griffin, Dayton A. (DNV Global Energy Concepts Inc., Seattle, WA)

    2009-05-01T23:59:59.000Z

    As part of the U.S. Department of Energy's Low Wind Speed Turbine program, Global Energy Concepts LLC (GEC)1 has studied alternative composite materials for wind turbine blades in the multi-megawatt size range. This work in one of the Blade System Design Studies (BSDS) funded through Sandia National Laboratories. The BSDS program was conducted in two phases. In the Part I BSDS, GEC assessed candidate innovations in composite materials, manufacturing processes, and structural configurations. GEC also made recommendations for testing composite coupons, details, assemblies, and blade substructures to be carried out in the Part II study (BSDS-II). The BSDS-II contract period began in May 2003, and testing was initiated in June 2004. The current report summarizes the results from the BSDS-II test program. Composite materials evaluated include carbon fiber in both pre-impregnated and vacuum-assisted resin transfer molding (VARTM) forms. Initial thin-coupon static testing included a wide range of parameters, including variation in manufacturer, fiber tow size, fabric architecture, and resin type. A smaller set of these materials and process types was also evaluated in thin-coupon fatigue testing, and in ply-drop and ply-transition panels. The majority of materials used epoxy resin, with vinyl ester (VE) resin also used for selected cases. Late in the project, testing of unidirectional fiberglass was added to provide an updated baseline against which to evaluate the carbon material performance. Numerous unidirectional carbon fabrics were considered for evaluation with VARTM infusion. All but one fabric style considered suffered either from poor infusibility or waviness of fibers combined with poor compaction. The exception was a triaxial carbon-fiberglass fabric produced by SAERTEX. This fabric became the primary choice for infused articles throughout the test program. The generally positive results obtained in this program for the SAERTEX material have led to its being used in innovative prototype blades of 9-m and 30-m length, as well as other non-wind related structures.

  17. Analysis of the spectroscopy of a hybrid system composed of a superconducting flux qubit and diamond NV centers

    E-Print Network [OSTI]

    H. Cai; Y. Matsuzaki; K. Kakuyanagi; H. Toida; X. Zhu; N. Mizuochi; K. Nemoto; K. Semba; W. J. Munro; S. Saito; H. Yamaguchi

    2015-05-28T23:59:59.000Z

    A hybrid system that combines the advantages of a superconducting flux qubit and an electron spin ensemble in diamond is one of the promising devices to realize quantum information processing. Exploring the properties of the superconductor diamond system is essential for the efficient use of this device. When we perform spectroscopy of this system, significant power broadening is observed. However, previous models to describe this system are known to be applicable only when the power broadening is negligible. Here, we construct a new approach to analyze this system with strong driving, and succeed to reproduce the spectrum with the power broadening. Our results provide an efficient way to analyze this hybrid system.

  18. Hybrid Power System Simulation Model | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, search OpenEIHesperia, California:Project JumpHyEnergy Systems IncCar

  19. MHK Technologies/SMART Hybrid System | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRose Bend < MHK ProjectsFlagshipNARECRho Cee <System < MHK

  20. Chapter 9: Control Systems 9-1 NSLS-II Conceptual Design Report

    E-Print Network [OSTI]

    Ohta, Shigemi

    and Scope The control system for NSLS-II is designed to convey all monitor, control, model and provide data for all control aspects. It must support 1 Hz model-based control, 110 kHz power supplyChapter 9: Control Systems 9-1 NSLS-II Conceptual Design Report 9 CONTROL SYSTEM 9.1 Introduction

  1. Automatic Control Software Synthesis for Quantized Discrete Time Hybrid Systems Vadim Alimguzhin, Federico Mari, Igor Melatti, Ivano Salvo, Enrico Tronci

    E-Print Network [OSTI]

    Tronci, Enrico

    Automatic Control Software Synthesis for Quantized Discrete Time Hybrid Systems Vadim Alimguzhin for automatic synthesis of embedded systems con- trol software. This paper addresses control software synthesis Software Based Control Systems, that is control systems whose controller consists of control software

  2. PV/cogeneration hybrid system nets large contract

    SciTech Connect (OSTI)

    Not Available

    1987-09-01T23:59:59.000Z

    Alpha Solarco Inc. announced on May 18, 1987 the signing of two $175 million exclusive development contracts with the Pawnee and Otoe-Missouria Tribes of Oklahoma to build two 70,000-kilowatt photovoltaic electric generating stations on Tribal lands in Oklahoma to supply Indian and other requirements. The projects, to be built in four phases, will each consists of 35,000 kilowatts of photovoltaic generating capacity to be supplied by the company's proprietary Modular Solar-Electric Photovoltaic Generator (MSEPG), and 35,000 kilowatts of gas-fired cogeneration. Alpha Solarco is starting to build and finance itself a 500-kilowatt demonstration plant as the initial step in the first project. This plant will be used to demonstrate that proven MSEPG design and technology can be integrated in electric utility systems, either as a base-load generator for small utilities, or as a peak-shaving device for large ones.

  3. Modular hybrid plasma reactor and related systems and methods

    DOE Patents [OSTI]

    Kong, Peter C.; Grandy, Jon D.; Detering, Brent A.

    2010-06-22T23:59:59.000Z

    A device, method and system for generating a plasma is disclosed wherein an electrical arc is established and the movement of the electrical arc is selectively controlled. In one example, modular units are coupled to one another to collectively define a chamber. Each modular unit may include an electrode and a cathode spaced apart and configured to generate an arc therebetween. A device, such as a magnetic or electromagnetic device, may be used to selectively control the movement of the arc about a longitudinal axis of the chamber. The arcs of individual modules may be individually controlled so as to exhibit similar or dissimilar motions about the longitudinal axis of the chamber. In another embodiment, an inlet structure may be used to selectively define the flow path of matter introduced into the chamber such that it travels in a substantially circular or helical path within the chamber.

  4. A calculation method of running range of electric vehicle with battery hybrid system

    SciTech Connect (OSTI)

    Ohmae, T.; Naito, S.; Ishizuka, M.

    1980-05-01T23:59:59.000Z

    Much attention is being paid to electric vehicles from environmental standpoints. One disadvantage of the electric vehicle is that its operative range is short. A means to overcome this difficulty is to use a hybrid battery which consist of a energy battery and a power battery. A method to make it possible to calculate the discharge characteristics of the battery hybrid system taking into account the charging behavior from the energy battery to the power battery is presented. In the proposed method, first the output voltage and the output current of an equivalent battery, which is required for realizing the given operating pattern are calculated. Next, the conduction ratio of the main chopper and the equivalent discharge of electric charge of each battery are calculated. These calculated data are used to calculate the operating range.

  5. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System Interim Report

    SciTech Connect (OSTI)

    Ayers, C.W.

    2004-11-23T23:59:59.000Z

    Laboratory tests were conducted to evaluate the electrical and mechanical performance of the 2004 Toyota Prius and its hybrid electric drive system. As a hybrid vehicle, the 2004 Prius uses both a gasoline-powered internal combustion engine and a battery-powered electric motor as motive power sources. Innovative algorithms for combining these two power sources results in improved fuel efficiency and reduced emissions compared to traditional automobiles. Initial objectives of the laboratory tests were to measure motor and generator back-electromotive force (emf) voltages and determine gearbox-related power losses over a specified range of shaft speeds and lubricating oil temperatures. Follow-on work will involve additional performance testing of the motor, generator, and inverter. Information contained in this interim report summarizes the test results obtained to date, describes preliminary conclusions and findings, and identifies additional areas for further study.

  6. F2010-B-107 MODELING OF THE THS-II SERIES/PARALLEL POWER TRAIN AND

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    F2010-B-107 MODELING OF THE THS-II SERIES/PARALLEL POWER TRAIN AND ITS ENERGY MANAGEMENT SYSTEM ­ Hybrid power train, power-split eCVT, rule-based control strategy, Toyota Hybrid System, driver-based engineering intuition controller. The model encloses the modeling of the vehicle dynamics, the power train

  7. Nuclear-Renewable Hybrid System Economic Basis for Electricity, Fuel, and Hydrogen

    SciTech Connect (OSTI)

    Charles Forsberg; Steven Aumeier

    2014-04-01T23:59:59.000Z

    Concerns about climate change and altering the ocean chemistry are likely to limit the use of fossil fuels. That implies a transition to a low-carbon nuclear-renewable electricity grid. Historically variable electricity demand was met using fossil plants with low capital costs, high operating costs, and substantial greenhouse gas emissions. However, the most easily scalable very-low-emissions generating options, nuclear and non-dispatchable renewables (solar and wind), are capital-intensive technologies with low operating costs that should operate at full capacities to minimize costs. No combination of fully-utilized nuclear and renewables can meet the variable electricity demand. This implies large quantities of expensive excess generating capacity much of the time. In a free market this results in near-zero electricity prices at times of high nuclear renewables output and low electricity demand with electricity revenue collapse. Capital deployment efficiency—the economic benefit derived from energy systems capital investment at a societal level—strongly favors high utilization of these capital-intensive systems, especially if low-carbon nuclear renewables are to replace fossil fuels. Hybrid energy systems are one option for better utilization of these systems that consumes excess energy at times of low prices to make some useful product.The economic basis for development of hybrid energy systems is described for a low-carbon nuclear renewable world where much of the time there are massivequantities of excess energy available from the electric sector.Examples include (1) high-temperature electrolysis to generate hydrogen for non-fossil liquid fuels, direct use as a transport fuel, metal reduction, etc. and (2) biorefineries.Nuclear energy with its concentrated constant heat output may become the enabling technology for economically-viable low-carbon electricity grids because hybrid nuclear systems may provide an economic way to produce dispatachable variable electricity with economic base-load operation of the reactor.

  8. Development of Diesel Exhaust Aftertreatment System for Tier II Emissions

    SciTech Connect (OSTI)

    Yu, R. C.; Cole, A. S., Stroia, B. J.; Huang, S. C. (Cummins, Inc.); Howden, Kenneth C.; Chalk, Steven (U.S. Dept. of Energy)

    2002-06-01T23:59:59.000Z

    Due to their excellent fuel efficiency, reliability, and durability, compression ignition direct injection (CIDI) engines have been used extensively to power almost all highway trucks, urban buses, off-road vehicles, marine carriers, and industrial equipment. CIDI engines burn 35 to 50% less fuel than gasoline engines of comparable size, and they emit far less greenhouse gases (Carbon Dioxides), which have been implicated in global warming. Although the emissions of CIDI engines have been reduced significantly over the last decade, there remains concern with the Nitrogen Oxides (NOX) and Particulate Matter (PM) emission levels. In 2000, the US EPA proposed very stringent emissions standards to be introduced in 2007 along with low sulfur (< 15ppm) diesel fuel. The California Air Resource Board (CARB) has also established the principle that future diesel fueled vehicles should meet the same emissions standards as gasoline fueled vehicles and the EPA followed suit with its Tier II emissions regulations. Meeting the Tier II standards requires NOX and PM emissions to be reduced dramatically. Achieving such low emissions while minimizing fuel economy penalty cannot be done through engine development and fuel reformulation alone, and requires application of NOX and PM aftertreatment control devices. A joint effort was made between Cummins Inc. and the Department of Energy to develop the generic aftertreatment subsystem technologies applicable for Light-Duty Vehicle (LDV) and Light-Duty Truck (LDT) engines. This paper provides an update on the progress of this joint development program. Three NOX reduction technologies including plasmaassisted catalytic NOX reduction (PACR), active lean NOX catalyst (LNC), and adsorber catalyst (AC) technology using intermittent rich conditions for NOX reduction were investigated in parallel in an attempt to select the best NOX control approach for light-duty aftertreatment subsystem integration and development. Investigations included system design and analysis, critical lab/engine experiments, and ranking then selection of NOX control technologies against reliability, up-front cost, fuel economy, service interval/serviceability, and size/weight. The results of the investigations indicate that the best NOX control approach for LDV and LDT applications is a NOX adsorber system. A greater than 83% NOX reduction efficiency is required to achieve 0.07g/mile NOX Tier II vehicle-out emissions. Both active lean NOX and PACR technology are currently not capable of achieving the high conversion efficiency required for Tier II, Bin 5 emissions standards. In this paper, the NOX technology assessment and selection is first reviewed and discussed. Development of the selected NOX technology (NOX adsorber) and PM control are then discussed in more detail. Discussion includes exhaust sulfur management, further adsorber formulation development, reductant screening, diesel particulate filter development & active regeneration, and preliminary test results on the selected integrated SOX trap, NOX adsorber, and diesel particulate filter system over an FTP-75 emissions cycle, and its impact on fuel economy. Finally, the direction of future work for continued advanced aftertreatment technology development is discussed. (SAE Paper SAE-2002-01-1867 © 2002 SAE International. This paper is published on this website with permission from SAE International. As a user of this website, you are permitted to view this paper on-line, download this pdf file and print one copy of this paper at no cost for your use only. The downloaded pdf file and printout of this SAE paper may not be copied, distributed or forwarded to others or for the use of others.)

  9. II

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7111AWell:F E ,"^ I 1' . _ .t.fiom/ I'l7aaII

  10. II

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7111AWell:F E ,"^ I 1' . _ .t.fiom/ I'l7aaII

  11. II*

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 3400, U.S.MajorMarketsNov-14 Dec-14Has Hydrocarbon, a 1 II

  12. Design and Analysis of Hybrid Solar Lighting and Full-Spectrum Solar Energy Systems

    SciTech Connect (OSTI)

    Muhs, J.D.

    2001-06-19T23:59:59.000Z

    This paper describes a systems-level design and analysis of a new approach for improving the energy efficiency and affordability of solar energy in buildings, namely, hybrid solar lighting and full-spectrum solar energy systems. By using different portions of the solar spectrum simultaneously for multiple end-use applications in buildings, the proposed system offers unique advantages over other alternatives for using sunlight to displace electricity (conventional topside daylighting and solar technologies). Our preliminary work indicates that hybrid solar lighting, a method of collecting and distributing direct sunlight for lighting purposes, will alleviate many of the problems with passive daylighting systems of today, such as spatial and temporal variability, glare, excess illumination, cost, and energy efficiency. Similarly, our work suggests that the most appropriate use of the visible portion of direct, nondiffuse sunlight from an energy-savings perspective is to displace electric light rather than generate electricity. Early estimates detailed in this paper suggest an anticipated system cost of well under $2.0/Wp and 5-11 {cents}/kWh for displaced and generated electricity in single-story commercial building applications. Based on a number of factors discussed in the paper, including sunlight availability, building use scenarios, time-of-day electric utility rates, cost, and efficacy of the displaced electric lights, the simple payback of this approach in many applications could eventually be well under 5 years.

  13. Initial results from the operation of village hybrid systems in Chile

    SciTech Connect (OSTI)

    Holz, R.; Baring-Gould, E.I.; Corbus, D. [and others

    1997-08-01T23:59:59.000Z

    The government of Chile has undertaken a rural electrification program to electrify 75% of the population by the year 2000. Renewable energy is considered within this program, and its application facilitated through a technical cooperation agreement between Chile`s national energy commission (CNE) and the U.S. Department of Energy. In order to introduce isolated mini-grid hybrid wind-energy systems into Chile, three pilot projects were implemented in Region IX. The goal of the pilot systems is to establish renewables as a viable option for rural electrification in the Chilean context. In this paper we report on the first six months of three pilot projects. Presented as background information are brief descriptions of the power systems, data acquisition systems, and the operation and maintenance (O&M) protocols. Analyses of loads, component performance, system operation, and balance of payments for O&M are the primary points presented. Important lessons learned and future plans are also discussed.

  14. Integration Schemes for Dissipative Particle Dynamics Simulations: From Softly Interacting Systems Towards Hybrid Models

    E-Print Network [OSTI]

    Ilpo Vattulainen; Mikko Karttunen; Gerhard Besold; J. M. Polson

    2002-11-15T23:59:59.000Z

    We examine the performance of various commonly used integration schemes in dissipative particle dynamics simulations. We consider this issue using three different model systems, which characterize a variety of different conditions often studied in simulations. Specifically we clarify the performance of integration schemes in hybrid models, which combine microscopic and meso-scale descriptions of different particles using both soft and hard interactions. We find that in all three model systems many commonly used integrators may give rise to surprisingly pronounced artifacts in physical observables such as the radial distribution function, the compressibility, and the tracer diffusion coefficient. The artifacts are found to be strongest in systems, where interparticle interactions are soft and predominated by random and dissipative forces, while in systems governed by conservative interactions the artifacts are weaker. Our results suggest that the quality of any integration scheme employed is crucial in all cases where the role of random and dissipative forces is important, including hybrid models where the solvent is described in terms of soft potentials.

  15. Self-learning control system for plug-in hybrid vehicles

    DOE Patents [OSTI]

    DeVault, Robert C [Knoxville, TN

    2010-12-14T23:59:59.000Z

    A system is provided to instruct a plug-in hybrid electric vehicle how optimally to use electric propulsion from a rechargeable energy storage device to reach an electric recharging station, while maintaining as high a state of charge (SOC) as desired along the route prior to arriving at the recharging station at a minimum SOC. The system can include the step of calculating a straight-line distance and/or actual distance between an orientation point and the determined instant present location to determine when to initiate optimally a charge depleting phase. The system can limit extended driving on a deeply discharged rechargeable energy storage device and reduce the number of deep discharge cycles for the rechargeable energy storage device, thereby improving the effective lifetime of the rechargeable energy storage device. This "Just-in-Time strategy can be initiated automatically without operator input to accommodate the unsophisticated operator and without needing a navigation system/GPS input.

  16. Method of converting an existing vehicle powertrain to a hybrid powertrain system

    DOE Patents [OSTI]

    Reed, Jr., Richard G. (Royal Oak, MI); Boberg, Evan S. (Hazel Park, MI); Lawrie, Robert E. (Whitmore Lake, MI); Castaing, Francois J. (Bloomfield Township, MI)

    2001-12-25T23:59:59.000Z

    A method of converting an existing vehicle powertrain including a manual transmission to a hybrid powertrain system with an automated powertrain transmission. The first step in the method of attaching a gear train housing to a housing of said manual transmission, said gear train housing receiving as end of drive shaft of said transmission and rotatably supporting a gear train assembly. Secondly, mounting an electric motor/generator to said gear train housing and attaching a motor/generator drive shaft of said electric motor/generator to said gear train assembly. Lastly, connecting an electro-mechanical clutch actuator to a friction clutch mechanism of said manual transmission.

  17. Transition from stable orbit to chaotic dynamics in hybrid systems of Filippov type with digital sampling

    E-Print Network [OSTI]

    Paul Glendinning; Piotr Kowalczyk

    2009-01-20T23:59:59.000Z

    We demonstrate on a representative example of a planar hybrid system with digital sampling a sudden transition from a stable limit cycle to the onset of chaotic dynamics. We show that the scaling law in the size of the attractor is proportional to the digital sampling time $\\tau$ for sufficiently small values of $\\tau.$ Numerical and analytical results are given. The scaling law changes to a nonlinear law for large values of the sampling time $\\tau.$ This phenomenon is explained by the change in the boundedness of the attractor.

  18. Principles of passive and active cooling of mirror-based hybrid systems employing liquid metals

    SciTech Connect (OSTI)

    Anglart, Henryk [Div. of Nuclear Technology, School of Engineering Sciences, Royal Institute of Technology Roslagstullsbacken 21, 106-91 Stockholm (Sweden)

    2012-06-19T23:59:59.000Z

    This paper presents principles of passive and active cooling that are suitable to mirrorbased hybrid, nuclear fission/fusion systems. It is shown that liquid metal lead-bismuth cooling of the mirror machine with 25 m height and 1.5 GW thermal power is feasible both in the active mode during the normal operation and in the passive mode after the reactor shutdown. In the active mode the achievable required pumping power can well be below 50 MW, whereas the passive mode provides enough coolant flow to keep the clad temperature below the damage limits.

  19. Atomic Entanglement vs Photonic Visibility for Quantum Criticality of Hybrid System

    E-Print Network [OSTI]

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

    2007-02-12T23:59:59.000Z

    To characterize the novel quantum phase transition for a hybrid system consisting of an array of coupled cavities and two-level atoms doped in each cavity, we study the atomic entanglement and photonic visibility in comparison with the quantum fluctuation of total excitations. Analytical and numerical simulation results show the happen of quantum critical phenomenon similar to the Mott insulator to superfluid transition. Here, the contour lines respectively representing the atomic entanglement, photonic visibility and excitation variance in the phase diagram are consistent in the vicinity of the non-analytic locus of atomic concurrences.

  20. Mesoscale hybrid calibration artifact

    SciTech Connect (OSTI)

    Tran, Hy D. (Albuquerque, NM); Claudet, Andre A. (Albuquerque, NM); Oliver, Andrew D. (Waltham, MA)

    2010-09-07T23:59:59.000Z

    A mesoscale calibration artifact, also called a hybrid artifact, suitable for hybrid dimensional measurement and the method for make the artifact. The hybrid artifact has structural characteristics that make it suitable for dimensional measurement in both vision-based systems and touch-probe-based systems. The hybrid artifact employs the intersection of bulk-micromachined planes to fabricate edges that are sharp to the nanometer level and intersecting planes with crystal-lattice-defined angles.

  1. Large Hybrid Energy Systems for Making Low CO2 Load-Following Power and Synthetic Fuel

    SciTech Connect (OSTI)

    Robert S. Cherry; Richard D. Boardman; Steven Aumeier

    2012-02-01T23:59:59.000Z

    Hybrid energy systems using nuclear heat sources can economically produce load-following electrical power by exploiting the surplus generation capacity available at night or seasonally to make synthetic fuel. Vehicle fuel is the only current energy use large enough to absorb all the energy capacity that might be diverted from the power industry, and its ease of storage obviates problems with discontinuous synfuel production. The potential benefits and challenges of synfuels integration are illustrated by the production of methanol from natural gas (as a source of carbon) using steam from a light water nuclear power reactor which is assumed to be available in accord with a year's worth of power demand data. Methanol's synthesis process is easily adapted to using 300 C heat from a light water reactor and this simple compound can be further processed into gasoline, biodiesel, or dimethyl ether, fuels which can be used with the current vehicle fleet. A supplemental feed to the methanol process of natural gas (for energy) allows operation at constant full rate when the nuclear heat is being used to produce electrical power. The higher capital costs of such a system are offset by a lower cost of heat and power production from a large base load type of plant and by reduced costs associated with much lower CO2 emissions. Other less tangible economic benefits of this and similar hybrid systems include better use of natural resource for fuels and greater energy services security from the domestic production of vehicle fuel.

  2. In-service performance and behavior characterization of the hybrid composite bridge system - a case study

    E-Print Network [OSTI]

    John M. Civitillo; Devin K. Harris; Amir Gheitasi; Mark Saliba; Bernard L. Kassner

    2014-09-08T23:59:59.000Z

    The Hybrid Composite Beam (HCB) system is an innovative structural technology that has been recently used in bridge construction within the U.S. transportation network. In this system, the superstructure consists of a conventional reinforced concrete deck supported by Hybrid Composite Beams. Each beam is comprised of a glassfiber reinforced polymer (FRP) box shell containing a tied parabolic concrete arch. Inclined stirrups provide shear integrity and enforce composite action between the HCBs and the concrete deck. This paper focuses on evaluating the in-service performance of a newly constructed HCB bridge superstructure located on Route 205 in Colonial Beach, Virginia. A live load test was conducted using tandem axle dump trucks under both quasi-static and dynamic conditions. Results obtained from the experimental investigation were used to determine three key behavior characteristics. Dynamic amplification and lateral load distribution were found to be reasonable in comparison to the assumed design values. The testing program also included internal and external measurement systems to help characterize the load sharing behavior of the HCB on an element level. The main load carrying elements are the deck in compression and the steel ties in tension, and the FRP shell did not act compositely with the internal components.

  3. Advanced Hybrid Propulsion and Energy Management System for High Efficiency, Off Highway, 240 Ton Class, Diesel Electric Haul Trucks

    SciTech Connect (OSTI)

    Richter, Tim; Slezak, Lee; Johnson, Chris; Young, Henry; Funcannon, Dan

    2008-12-31T23:59:59.000Z

    The objective of this project is to reduce the fuel consumption of off-highway vehicles, specifically large tonnage mine haul trucks. A hybrid energy storage and management system will be added to a conventional diesel-electric truck that will allow capture of braking energy normally dissipated in grid resistors as heat. The captured energy will be used during acceleration and motoring, reducing the diesel engine load, thus conserving fuel. The project will work towards a system validation of the hybrid system by first selecting an energy storage subsystem and energy management subsystem. Laboratory testing at a subscale level will evaluate these selections and then a full-scale laboratory test will be performed. After the subsystems have been proven at the full-scale lab, equipment will be mounted on a mine haul truck and integrated with the vehicle systems. The integrated hybrid components will be exercised to show functionality, capability, and fuel economy impacts in a mine setting.

  4. Solar Electric Generating System II finite element analysis

    SciTech Connect (OSTI)

    Dohner, J.L.; Anderson, J.R.

    1994-04-01T23:59:59.000Z

    On June 2, 1992, Landers` earthquake struck the Solar Electric Generating System II, located in Daggett, California. The 30 megawatt power station, operated by the Daggett Leasing Corporation (DLC), suffered substantial damage due to structural failures in the solar farm. These failures consisted of the separation of sliding joints supporting a distribution of parabolic glass mirrors. At separation, the mirrors fell to the ground and broke. It was the desire of the DLC and the Solar Thermal Design Assistance Center (STDAC) of Sandia National Laboratories (SNL) and to redesign these joints so that, in the event of future quakes, costly breakage will be avoided. To accomplish this task, drawings of collector components were developed by the STDAC, from which a detailed finite element computer model of a solar collector was produced. This nonlinear dynamic model, which consisted of over 8,560 degrees of freedom, underwent model reduction to form a low order nonlinear dynamic model containing only 40 degrees of freedom. This model was then used as a design tool to estimate joint dynamics. Using this design tool, joint configurations were modified, and an acceptable joint redesign determined. The results of this analysis showed that the implementation of metal stops welded to support shafts for the purpose of preventing joint separation is a suitable joint redesign. Moreover, it was found that, for quakes of Landers` magnitude, mirror breakage due to enhanced vibration in the trough assembly is unlikely.

  5. Rooftop PV system. Final technical progress report, Phase II

    SciTech Connect (OSTI)

    NONE

    1995-08-01T23:59:59.000Z

    Under this four-year PV:BONUS Program, ECD and United Solar are developing and demonstrating two new lightweight flexible building integrated Photovoltaic (BIPV) modules specifically designed as exact replacements for conventional asphalt shingles and standing seam metal roofing. These modules can be economically and aesthetically integrated into new residential and commercial buildings, and address the even larger roofing replacement market. The modules are designed to be installed by roofing contractors without special training which minimizes the installation and balance of system costs. The modules will be fabricated from high-efficiency, multiple-junction a-Si alloy solar cells developed by ECD and United Solar. Under the Phase I Program, which ended in March 1994, we developed two different concept designs for rooftop PV modules: (1) the United Solar overlapping (asphalt shingle replacement) shingle-type modules and (2) the ECD metal roof-type modules. We also developed a plan for fabricating, testing and demonstrating these modules. Candidate demonstration sites for our rooftop PV modules were identified and preliminary engineering designs for these demonstrations were developed; a marketing study plan was also developed. The major objectives of the Phase II Program, which started in June 1994 was (1) to develop, test, and qualify these new rooftop modules; (2) to develop mechanical and electrical engineering specifications for the demonstration projects; and (3) to develop a marketing/commercialization plan.

  6. Automated UF6 Cylinder Enrichment Assay: Status of the Hybrid Enrichment Verification Array (HEVA) Project: POTAS Phase II

    SciTech Connect (OSTI)

    Jordan, David V.; Orton, Christopher R.; Mace, Emily K.; McDonald, Benjamin S.; Kulisek, Jonathan A.; Smith, Leon E.

    2012-06-01T23:59:59.000Z

    Pacific Northwest National Laboratory (PNNL) intends to automate the UF6 cylinder nondestructive assay (NDA) verification currently performed by the International Atomic Energy Agency (IAEA) at enrichment plants. PNNL is proposing the installation of a portal monitor at a key measurement point to positively identify each cylinder, measure its mass and enrichment, store the data along with operator inputs in a secure database, and maintain continuity of knowledge on measured cylinders until inspector arrival. This report summarizes the status of the research and development of an enrichment assay methodology supporting the cylinder verification concept. The enrichment assay approach exploits a hybrid of two passively-detected ionizing-radiation signatures: the traditional enrichment meter signature (186-keV photon peak area) and a non-traditional signature, manifested in the high-energy (3 to 8 MeV) gamma-ray continuum, generated by neutron emission from UF6. PNNL has designed, fabricated, and field-tested several prototype assay sensor packages in an effort to demonstrate proof-of-principle for the hybrid assay approach, quantify the expected assay precision for various categories of cylinder contents, and assess the potential for unsupervised deployment of the technology in a portal-monitor form factor. We refer to recent sensor-package prototypes as the Hybrid Enrichment Verification Array (HEVA). The report provides an overview of the assay signatures and summarizes the results of several HEVA field measurement campaigns on populations of Type 30B UF6 cylinders containing low-enriched uranium (LEU), natural uranium (NU), and depleted uranium (DU). Approaches to performance optimization of the assay technique via radiation transport modeling are briefly described, as are spectroscopic and data-analysis algorithms.

  7. Reliability Analysis of Electric Power Systems Using an Object-oriented Hybrid Modeling Approach

    E-Print Network [OSTI]

    Schläpfer, Markus; Kröger, Wolfgang

    2012-01-01T23:59:59.000Z

    The ongoing evolution of the electric power systems brings about the need to cope with increasingly complex interactions of technical components and relevant actors. In order to integrate a more comprehensive spectrum of different aspects into a probabilistic reliability assessment and to include time-dependent effects, this paper proposes an object-oriented hybrid approach combining agent-based modeling techniques with classical methods such as Monte Carlo simulation. Objects represent both technical components such as generators and transmission lines and non-technical components such as grid operators. The approach allows the calculation of conventional reliability indices and the estimation of blackout frequencies. Furthermore, the influence of the time needed to remove line overloads on the overall system reliability can be assessed. The applicability of the approach is demonstrated by performing simulations on the IEEE Reliability Test System 1996 and on a model of the Swiss high-voltage grid.

  8. High voltage bus and auxiliary heater control system for an electric or hybrid vehicle

    DOE Patents [OSTI]

    Murty, Balarama Vempaty (West Bloomfield, MI)

    2000-01-01T23:59:59.000Z

    A control system for an electric or hybrid electric vehicle includes a vehicle system controller and a control circuit having an electric immersion heater. The heater is electrically connected to the vehicle's high voltage bus and is thermally coupled to a coolant loop containing a heater core for the vehicle's climate control system. The system controller responds to cabin heat requests from the climate control system by generating a pulse width modulated signal that is used by the control circuit to operate the heater at a duty cycle appropriate for the amount of cabin heating requested. The control system also uses the heater to dissipate excess energy produced by an auxiliary power unit and to provide electric braking when regenerative braking is not desirable and manual braking is not necessary. The control system further utilizes the heater to provide a safe discharge of a bank of energy storage capacitors following disconnection of the battery or one of the high voltage connectors used to transmit high voltage operating power to the various vehicle systems. The control circuit includes a high voltage clamping circuit that monitors the voltage on the bus and operates the heater to clamp down the bus voltage when it exceeds a pre-selected maximum voltage. The control system can also be used to phase in operation of the heater when the bus voltage exceeds a lower threshold voltage and can be used to phase out the auxiliary power unit charging and regenerative braking when the battery becomes fully charged.

  9. Modelling, Simulation, Testing, and Optimization of Advanced Hybrid Vehicle Powertrains

    E-Print Network [OSTI]

    Victoria, University of

    Modelling, Simulation, Testing, and Optimization of Advanced Hybrid Vehicle Powertrains By Jeffrey of the author. #12;ii Modelling, Simulation, Testing and Optimization of Advanced Hybrid Vehicle Powertrains supplant conventional ICEs as the dominant technology, most notably electric and hybrid powertrains

  10. A hybridGaussian-discrete variable representation approach to molecular continuum processes II: application to photoionization of diatomic Li2+

    SciTech Connect (OSTI)

    Rescigno, Thomas N; Yip, Frank L.; McCurdy, C. William; Rescigno, Thomas N.

    2008-08-01T23:59:59.000Z

    We describe an approach for studying molecular photoionization with a hybrid basis that combines the functionality of analytic basis sets to represent electronic coordinates near the nuclei of a molecule with numerically-defined grid-based functions. We discuss the evaluation of the various classes of two-electron integrals that occur in a hybrid basis consisting of Gaussian type orbitals (GTOs) and discrete variable representation (DVR) functions. This combined basis is applied to calculate single photoionization cross sections for molecular Li_2+, which has a large equilibrium bond distance (R=5.86a_0). The highly non-spherical nature of Li_2+ molecules causes higher angular momentum components to contribute significantly to the cross section even at low photoelectron energies, resulting in angular distributions that appear to be f-wave dominated near the photoionization threshold. At higher energies, where the de Broglie wavelength of the photoelectron becomes comparable with the bond distance, interference effects appear in the photoionization cross section. These interference phenomena appear at much lower energies than would be expected for diatomic targets with shorter internuclear separations.

  11. Bus application of oxygen-enrichment technology and diesel-electric hybrid systems

    SciTech Connect (OSTI)

    Sekar, R.R.; Marr, W.W.

    1993-10-01T23:59:59.000Z

    The amendments to the Clean Air Act (CAA) mandate very strict limits on particulate, smoke, and other emissions from city buses. The use of alternative fuels, such as compressed natural gas (CNG) or methanol, can help transit operators, such as the Chicago Transit Authority (CTA), meet the mandated limits. However, the capital investment needed to convert the fueling infrastructure and buses is large, as is the expense of training personnel. If a {open_quotes}clean diesel{close_quotes} bus can be implemented with the help of oxygen-enrichment technology or a diesel-electric hybrid system, this large investment could be postponed for many years. The Regional Transportation Authority (RTA) initiated this project to evaluate the possibility of applying these technologies to CTA buses. Argonne National Laboratory (ANL) conducted a limited number of engine tests and computer analyses and concluded that both concepts are practical and will help in a {open_quotes}clean diesel{close_quotes} bus that can meet the mandated limits of the CAA amendments. The oxygen enrichment of combustion air depends on the availability of a compact and economical membrane separator. Because the technology for this critical component is still under development, it is recommended that an actual bus demonstration be delayed until prototype membranes are available. The hybrid propulsion system is ready for the demonstration phase, and it is recommended that the CTA and RTA commence planning for a bus demonstration.

  12. Model-Free Learning-Based Online Management of Hybrid Electrical Energy Storage Systems in Electric Vehicles

    E-Print Network [OSTI]

    Pedram, Massoud

    Model-Free Learning-Based Online Management of Hybrid Electrical Energy Storage Systems in Electric@elpl.snu.ac.kr Abstract--To improve the cycle efficiency and peak output power density of energy storage systems in electric vehicles (EVs), supercapacitors have been proposed as auxiliary energy storage elements

  13. Energy Management of DVS-DPM Enabled Embedded Systems Powered by Fuel Cell-Battery Hybrid Source

    E-Print Network [OSTI]

    Kambhampati, Subbarao

    minimization policy and an optimal fuel flow control policy. The proposed method, when applied to a randomized and embedded systems General Terms: Algorithms, Design Keywords: DPM, DVS, fuel cell, hybrid power, embedded system 1. INTRODUCTION Energy minimization has always been a critical design criteria for portable

  14. Concentrating Solar Power Hybrid System Study: Cooperative Research and Development Final Report, CRADA Number CRD-13-506

    SciTech Connect (OSTI)

    Turchi, C.

    2014-09-01T23:59:59.000Z

    The purpose of this PTS is to collaboratively leverage the collective resources at General Electric Global Research (GEGRC) and National Renewable Energy Laboratories (NREL) in the areas of concentrating solar power hybrid systems to advance state-of-the-art concentrating solar and conventional power generation system integration.

  15. Life-cycle analysis results for geothermal systems in comparison to other power systems: Part II.

    SciTech Connect (OSTI)

    Sullivan, J.L.; Clark, C.E.; Yuan, L.; Han, J.; Wang, M. (Energy Systems)

    2012-02-08T23:59:59.000Z

    A study has been conducted on the material demand and life-cycle energy and emissions performance of power-generating technologies in addition to those reported in Part I of this series. The additional technologies included concentrated solar power, integrated gasification combined cycle, and a fossil/renewable (termed hybrid) geothermal technology, more specifically, co-produced gas and electric power plants from geo-pressured gas and electric (GPGE) sites. For the latter, two cases were considered: gas and electricity export and electricity-only export. Also modeled were cement, steel and diesel fuel requirements for drilling geothermal wells as a function of well depth. The impact of the construction activities in the building of plants was also estimated. The results of this study are consistent with previously reported trends found in Part I of this series. Among all the technologies considered, fossil combustion-based power plants have the lowest material demand for their construction and composition. On the other hand, conventional fossil-based power technologies have the highest greenhouse gas (GHG) emissions, followed by the hybrid and then two of the renewable power systems, namely hydrothermal flash power and biomass-based combustion power. GHG emissions from U.S. geothermal flash plants were also discussed, estimates provided, and data needs identified. Of the GPGE scenarios modeled, the all-electric scenario had the highest GHG emissions. Similar trends were found for other combustion emissions.

  16. Application of system safety framework in hybrid socio-technical environment of Eurasia

    E-Print Network [OSTI]

    Abdymomunov, Azamat

    2011-01-01T23:59:59.000Z

    The political transformation and transition of post-Soviet societies have led to hybrid structures in political, economic and technological domains. In such hybrid structures the roles of government, state enterprise, ...

  17. Supergravity Analysis of Hybrid Inflation Model from D3--D7 System

    E-Print Network [OSTI]

    Koyama, Fumikazu

    2009-01-01T23:59:59.000Z

    B 259 (1991) 38; A. D. Linde, “Hybrid in?ation,” Phys. Rev.hep-ph/9608256]. [5] A. D. Linde and A. Riotto, “Hybrid in?S. Kachru, R. Kallosh, A. Linde, J. Maldacena, L. McAllister

  18. angiotensin ii systems: Topics by E-print Network

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

    in the rat brain in response to dietary sodium manipulation and angiotensin (Ang)II infusion. Male Wistar Kyoto rats (n ? 6) were fed normal, high, or low sodium diets for 12 d...

  19. Evaluation of 2004 Toyota Prius Hybrid Electic Drive System Interim Report - Revised

    SciTech Connect (OSTI)

    Ayers, C.W.; Hsu, J.S.; Marlino, L.D.; Miller, C.W.; Ott, G.W., Jr.; Oland, C.B.; Burress, T.A.

    2007-07-31T23:59:59.000Z

    The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery-powered electric motor. Both of these motive power sources are capable of providing mechanical drive power for the vehicle. The engine can deliver a peak power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak power output of 50 kW at 1300 rpm. Together, this engine-motor combination has a specified peak power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. Laboratory tests were conducted to evaluate the electrical and mechanical performance of the 2004 Toyota Prius and its hybrid electric drive system. As a hybrid vehicle, the 2004 Prius uses both a gasoline-powered internal combustion engine and a battery-powered electric motor as motive power sources. Innovative algorithms for combining these two power sources results in improved fuel efficiency and reduced emissions compared to traditional automobiles. Initial objectives of the laboratory tests were to measure motor and generator back-electromotive force (emf) voltages and determine gearbox-related power losses over a specified range of shaft speeds and lubricating oil temperatures. Follow-on work will involve additional performance testing of the motor, generator, and inverter. Information contained in this interim report summarizes the test results obtained to date, describes preliminary conclusions and findings, and identifies additional areas for further study.

  20. Energy Storage Systems Considerations for Grid-Charged Hybrid Electric Vehicles: Preprint

    SciTech Connect (OSTI)

    Markel, T.; Simpson, A.

    2005-09-01T23:59:59.000Z

    This paper calculates battery power and energy requirements for grid-charged hybrid electric vehicles (HEVs) with different operating strategies.

  1. Letter box line blackener for the HDTV/conventional-analog hybrid system

    DOE Patents [OSTI]

    Wysocki, Frederick J.; Nickel, George H.

    2006-07-18T23:59:59.000Z

    A blackener for letter box lines associated with a HDTV/conventional-analog hybrid television transmission where the blackener counts horizontal sync pulses contained in the HDTV/conventional-analog hybrid television transmission and determines when the HDTV/conventional-analog hybrid television transmission is in letter-box lines: if it is, then the blackener sends substitute black signal to an output; and if it is not, then the blackener sends the HDTV/conventional-analog hybrid television transmission to the output.

  2. River Protection Project Integrated safety management system phase II verification report, volumes I and II - 8/19/99

    SciTech Connect (OSTI)

    SHOOP, D.S.

    1999-09-10T23:59:59.000Z

    The Department of Energy policy (DOE P 450.4) is that safety is integrated into all aspects of the management and operations of its facilities. In simple and straightforward terms, the Department will ''Do work safely.'' The purpose of this River Protection Project (RPP) Integrated Safety Management System (ISMS) Phase II Verification was to determine whether ISMS programs and processes are implemented within RFP to accomplish the goal of ''Do work safely.'' The goal of an implemented ISMS is to have a single integrated system that includes Environment, Safety, and Health (ES&H) requirements in the work planning and execution processes to ensure the protection of the worker, public, environment, and federal property over the RPP life cycle. The ISMS is comprised of the (1) described functions, components, processes, and interfaces (system map or blueprint) and (2) personnel who are executing those assigned roles and responsibilities to manage and control the ISMS. Therefore, this review evaluated both the ''paper'' and ''people'' aspects of the ISMS to ensure that the system is implemented within RPP. Richland Operations Office (RL) conducted an ISMS Phase I Verification of the TWRS from September 28-October 9, 1998. The resulting verification report recommended that TWRS-RL and the contractor proceed with Phase II of ISMS verification given that the concerns identified from the Phase I verification review are incorporated into the Phase II implementation plan.

  3. Phonon mediated electromagnetically induced absorption in hybrid opto-electro mechanical systems

    E-Print Network [OSTI]

    Kenan Qu; G. S. Agarwal

    2013-03-15T23:59:59.000Z

    We predict the existence of the electromagnetically induced absorption (EIA) in the double cavity configurations of the hybrid opto-electro mechanical systems (OEMS). We discuss the origin of the EIA in OEMS which exhibit the existence of an absorption peak within the transparency window. We provide analytical results for the width and the height of the EIA peak. The combination of the EIT and EIA is especially useful for photon switching applications. The EIA that we discuss is different from the one originally discovered by Lezama et al in atomic systems and can be understood in terms of the dynamics of three coupled oscillators (rather than two) under different conditions on the relaxation parameters. The EIA we report can also be realized in metamaterials and plasmonic structures.

  4. Hybrid intelligent control scheme for air heating system using fuzzy logic and genetic algorithm

    SciTech Connect (OSTI)

    Thyagarajan, T.; Shanmugam, J.; Ponnavaikko, M.; Panda, R.C.

    2000-01-01T23:59:59.000Z

    Fuzzy logic provides a means for converting a linguistic control strategy, based on expert knowledge, into an automatic control strategy. Its performance depends on membership function and rule sets. In the traditional Fuzzy Logic Control (FLC) approach, the optimal membership is formed by trial-and-error method. In this paper, Genetic Algorithm (GA) is applied to generate the optimal membership function of FLC. The membership function thus obtained is utilized in the design of the Hybrid Intelligent Control (HIC) scheme. The investigation is carried out for an Air Heat System (AHS), an important component of drying process. The knowledge of the optimum PID controller designed, is used to develop the traditional FLC scheme. The computational difficulties in finding optimal membership function of traditional FLC is alleviated using GA In the design of HIC scheme. The qualitative performance indices are evaluated for the three control strategies, namely, PID, FLC and HIC. The comparison reveals that the HIC scheme designed based on the hybridization of FLC with GA performs better. Moreover, GA is found to be an effective tool for designing the FLC, eliminating the human interface required to generate the membership functions.

  5. Using field theory to construct hybrid particle-continuum simulation schemes with adaptive resolution for soft matter systems

    E-Print Network [OSTI]

    Shuanhu Qi; Hans Behringer; Friederike Schmid

    2013-09-26T23:59:59.000Z

    We develop a multiscale hybrid scheme for simulations of soft condensed matter systems, which allows one to treat the system at the particle level in selected regions of space, and at the continuum level elsewhere. It is derived systematically from an underlying particle-based model by field theoretic methods. Particles in different representation regions can switch representations on the fly, controlled by a spatially varying tuning function. As a test case, the hybrid scheme is applied to simulate colloid-polymer composites with high resolution regions close to the colloids. The hybrid simulations are significantly faster than reference simulations of a pure particle-based model, and the results are in good agreement.

  6. Method and apparatus for effecting light-off of a catalytic converter in a hybrid powertrain system

    DOE Patents [OSTI]

    Roos, Bryan Nathaniel; Spohn, Brian L

    2013-07-02T23:59:59.000Z

    A powertrain system includes a hybrid transmission and an internal combustion engine coupled to an exhaust aftertreatment device. A method for operating the powertrain system includes operating the hybrid transmission to generate tractive torque responsive to an operator torque request with the internal combustion engine in an engine-off state so long as the tractive torque is less than a threshold. The internal combustion engine is operated in an engine-on state at preferred operating conditions to effect light-off of the exhaust aftertreatment device and the hybrid transmission is coincidentally operated to generate tractive torque responsive to the operator torque request when the operator torque request exceeds the threshold. The internal combustion engine is then operated in the engine-on state to generate tractive torque responsive to the operator torque request.

  7. FreedomCAR :electrical energy storage system abuse test manual for electric and hybrid electric vehicle applications.

    SciTech Connect (OSTI)

    Doughty, Daniel Harvey; Crafts, Chris C.

    2006-08-01T23:59:59.000Z

    This manual defines a complete body of abuse tests intended to simulate actual use and abuse conditions that may be beyond the normal safe operating limits experienced by electrical energy storage systems used in electric and hybrid electric vehicles. The tests are designed to provide a common framework for abuse testing various electrical energy storage systems used in both electric and hybrid electric vehicle applications. The manual incorporates improvements and refinements to test descriptions presented in the Society of Automotive Engineers Recommended Practice SAE J2464 ''Electric Vehicle Battery Abuse Testing'' including adaptations to abuse tests to address hybrid electric vehicle applications and other energy storage technologies (i.e., capacitors). These (possibly destructive) tests may be used as needed to determine the response of a given electrical energy storage system design under specifically defined abuse conditions. This manual does not provide acceptance criteria as a result of the testing, but rather provides results that are accurate and fair and, consequently, comparable to results from abuse tests on other similar systems. The tests described are intended for abuse testing any electrical energy storage system designed for use in electric or hybrid electric vehicle applications whether it is composed of batteries, capacitors, or a combination of the two.

  8. SNEWS: A Neutrino Early Warning System for Galactic SN II

    E-Print Network [OSTI]

    Alec Habig; for the SNEWS Collaboration

    1999-12-14T23:59:59.000Z

    The detection of neutrinos from SN1987A confirmed the core-collapse nature of SN II, but the neutrinos were not noticed until after the optical discovery. The current generation of neutrino experiments are both much larger and actively looking for SN neutrinos in real time. Since neutrinos escape a new SN promptly while the first photons are not produced until the photospheric shock breakout hours later, these experiments can provide an early warning of a coming galactic SN II. A coincidence network between neutrino experiments has been established to minimize response time, eliminate experimental false alarms, and possibly provide some pointing to the impending event from neutrino wave-front timing.

  9. FRANTIC 5 (a version of FRANTIC II) : a computer code for evaluating system aging effect

    E-Print Network [OSTI]

    Dimitrijevic, Vesna B.

    1986-01-01T23:59:59.000Z

    The FRANTIC 5 code is a modification of the FRANTIC II code for time dependent unavailability analysis. FRANTIC 5 is specially adapted for modeling the aging effects on system and component performance. The FRANTIC 5 code ...

  10. Thermoelectric Generators for Automotive Waste Heat Recovery Systems Part II: Parametric Evaluation

    E-Print Network [OSTI]

    Xu, Xianfan

    Thermoelectric Generators for Automotive Waste Heat Recovery Systems Part II: Parametric Evaluation been proposed to model thermoelectric generators (TEGs) for automotive waste heat recovery. Details: Thermoelectric generators, waste heat recovery, automotive exhaust, skutterudites INTRODUCTION In part I

  11. DEMONSTRATION OF A HYBRID INTELLIGENT CONTROL STRATEGY FOR CRITICAL BUILDING HVAC SYSTEMS

    SciTech Connect (OSTI)

    Craig Rieger; D. Subbaram Naidu

    2010-06-01T23:59:59.000Z

    Many industrial facilities utilize pressure control gradients to prevent migration of hazardous species from containment areas to occupied zones, often using Proportional-Integral-Derivative (PID) control. Within these facilities, PID control is often inadequate to maintain desired performance due to changing operating conditions. As the goal of the Heating, Ventilation and Air-Conditioning (HVAC) control system is to optimize the pressure gradients and associated flows for the plant, Linear Quadratic Tracking (LQT) provides a time-based approach to guiding plant interactions. However, LQT methods are susceptible to modeling and measurement errors, and therefore a hybrid design using the integration of soft control methods with hard control methods is developed and demonstrated to account for these errors and nonlinearities.

  12. DRAFT INTERIM REPORT: NATIONAL PROGRAM PLAN FOR PASSIVE AND HYBRID SOLAR HEATING AND COOLING

    E-Print Network [OSTI]

    Authors, Various

    2012-01-01T23:59:59.000Z

    passive and hybrid space heating systems. Space Cooling Aand hybrid solar heating and cooling systems. Experimentspassive, and hybrid systems for heating, cooling, and

  13. Hybrid solid state laser system using a neodymium-based master oscillator and an ytterbium-based power amplifier

    DOE Patents [OSTI]

    Payne, Stephen A. (Castro Valley, CA); Marshall, Christopher D. (Livermore, CA); Powell, Howard T. (Livermore, CA); Krupke, William F. (Pleasanton, CA)

    2001-01-01T23:59:59.000Z

    In a master oscillator-power amplifier (MOPA) hybrid laser system, the master oscillator (MO) utilizes a Nd.sup.3+ -doped gain medium and the power amplifier (PA) utilizes a diode-pumped Yb.sup.3+ -doped material. The use of two different laser gain media in the hybrid MOPA system provides advantages that are otherwise not available. The Nd-doped gain medium preferably serves as the MO because such gain media offer the lowest threshold of operation and have already been engineered as practical systems. The Yb-doped gain medium preferably serves in the diode-pumped PA to store pump energy effectively and efficiently by virtue of the long emission lifetime, thereby reducing diode pump costs. One crucial constraint on the MO and PA gain media is that the Nd and Yb lasers must operate at nearly the same wavelength. The 1.047 .mu.m Nd:YLF/Yb:S-FAP [Nd:LiYF.sub.4 /Yb:Sr.sub.5 (PO.sub.4).sub.3 F] hybrid MOPA system is a preferred embodiment of the hybrid Nd/Yb MOPA.

  14. Extending the Lifetime of Fuel Cell Based Hybrid Systems* Jianli Zhuo1, Chaitali Chakrabartil, Naehyuck Chang2, Sarma Vrudhula3

    E-Print Network [OSTI]

    Kambhampati, Subbarao

    34.1 Extending the Lifetime of Fuel Cell Based Hybrid Systems* Jianli Zhuo1, Chaitali Chakrabartil@asu.edu ABSTRACT for portable applications. Fuel cells have very high energy densities Fuel cells are clean power densities and lifetimes compared to batteries. However, fuel cells

  15. The lower hybrid (LH) heating and current drive system can generate 10-12 MW of microwave power

    E-Print Network [OSTI]

    Background The lower hybrid (LH) heating and current drive system can generate 10-12 MW reflecting optics · Remote vacuum window manufactured by CCFE · Industrial contract for periscope manufacture with Zemax model · Remote, IR compatible, double vacuum window with pumped interspace · 4, two colour

  16. OPTIMIZATION OF HYBRID GEOTHERMAL HEAT PUMP SYSTEMS Scott Hackel, Graduate Research Assistant; Gregory Nellis, Professor; Sanford Klein,

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    1 OPTIMIZATION OF HYBRID GEOTHERMAL HEAT PUMP SYSTEMS Scott Hackel, Graduate Research Assistant to complete a parametric study of optimal HyGCHP designs over a range of scenarios varying in climate with an optimization package to allow design and control parameters to be globally optimized in order to minimize

  17. Thomson scattering diagnostic system design for the Compact Toroidal Hybrid experiment

    SciTech Connect (OSTI)

    Traverso, P. J., E-mail: pjt0002@auburn.edu; Maurer, D. A.; Ennis, D. A.; Hartwell, G. J.; Goforth, M. M.; Loch, S. D.; Pearce, A. J.; Cianciosa, M. R. [Physics Department, Auburn University, Auburn, Alabama 36849 (United States)

    2014-11-15T23:59:59.000Z

    A new Thomson scattering system using standard commercially available components has been designed for the non-axisymmetric plasmas of the Compact Toroidal Hybrid (CTH). The beam, generated by a frequency doubled Continuum PL DLS 2 J Nd:YAG laser, is passed vertically through an entrance Brewster window and an aperturing baffle system to minimize the stray laser light that could enter the collection optics. The beam line has been designed with an 8 m propagation distance to the mid-plane of the CTH device with the beam diameter kept less than 3 mm inside the plasma volume. The beam exits the vacuum system through another Brewster window and enters a beam dump, again to minimize the stray light in the vacuum chamber. Light collection, spectral processing, and signal detection are accomplished with an f/#? 1 aspheric lens, a commercially available Holospec f/1.8 spectrometer, and an Andor iStar DH740-18U-C3 image intensified camera. Spectral rejection of stray laser light, if needed, can be performed with the use of an optional interference filter at the spectrometer input. The system has been developed for initial single point measurements of plasmas with core electron temperatures of approximately 20–300 eV and densities of 5 × 10{sup 18} to 5 × 10{sup 19}?m{sup ?3} dependent upon operational scenario.

  18. Hybrid Solar Lighting

    SciTech Connect (OSTI)

    Maxey, L Curt [ORNL

    2008-01-01T23:59:59.000Z

    Hybrid solar lighting systems focus highly concentrated sunlight into a fiber optic bundle to provide sunlight in rooms without windows or conventional skylights.

  19. PDE Estimation Techniques for Advanced Battery Management Systems -Part II: SOH Identification

    E-Print Network [OSTI]

    Krstic, Miroslav

    vehi- cles and renewable energy resources is battery energy storage. Advanced battery systems representPDE Estimation Techniques for Advanced Battery Management Systems - Part II: SOH Identification S sensing and actuation exists to monitor and control the internal state of these systems. As such, battery

  20. Application of Product Design Concepts and Hybrid System Dynamics to Demonstrate Zeno Behavior and Zeno Periodic Orbits in a Physical Double Pendulum Setup

    E-Print Network [OSTI]

    Kothapalli, Bhargav

    2012-07-16T23:59:59.000Z

    to understand the significance of periodic orbits on a simple dynamic system. Two hybrid system applications with different levels of complexity will be considered in this thesis – an anthropomorphic Bipedal walking robot and a Double Pendulum with a...

  1. An arc control and protection system for the JET lower hybrid antenna based on an imaging system

    SciTech Connect (OSTI)

    Figueiredo, J., E-mail: joao.figueiredo@jet.efda.org [Associação EURATOM/IST, Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal and EFDA-CSU, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); Mailloux, J.; Kirov, K.; Kinna, D.; Stamp, M.; Devaux, S.; Arnoux, G.; Edwards, J. S.; Stephen, A. V.; McCullen, P.; Hogben, C. [EURATOM/CCFE Fusion Association, Culham Science Center, Abingdon OX14 3DB (United Kingdom)

    2014-11-15T23:59:59.000Z

    Arcs are the potentially most dangerous events related to Lower Hybrid (LH) antenna operation. If left uncontrolled they can produce damage and cause plasma disruption by impurity influx. To address this issue an arc real time control and protection imaging system for the Joint European Torus (JET) LH antenna has been implemented. The LH system is one of the additional heating systems at JET. It comprises 24 microwave generators (klystrons, operating at 3.7 GHz) providing up to 5 MW of heating and current drive to the JET plasma. This is done through an antenna composed of an array of waveguides facing the plasma. The protection system presented here is based primarily on an imaging arc detection and real time control system. It has adapted the ITER like wall hotspot protection system using an identical CCD camera and real time image processing unit. A filter has been installed to avoid saturation and spurious system triggers caused by ionization light. The antenna is divided in 24 Regions Of Interest (ROIs) each one corresponding to one klystron. If an arc precursor is detected in a ROI, power is reduced locally with subsequent potential damage and plasma disruption avoided. The power is subsequently reinstated if, during a defined interval of time, arcing is confirmed not to be present by image analysis. This system was successfully commissioned during the restart phase and beginning of the 2013 scientific campaign. Since its installation and commissioning, arcs and related phenomena have been prevented. In this contribution we briefly describe the camera, image processing, and real time control systems. Most importantly, we demonstrate that an LH antenna arc protection system based on CCD camera imaging systems works. Examples of both controlled and uncontrolled LH arc events and their consequences are shown.

  2. A Novel Integrated Magnetic Structure Based DC/DC Converter for Hybrid Battery/Ultracapacitor Energy Storage Systems

    SciTech Connect (OSTI)

    Onar, Omer C [ORNL

    2012-01-01T23:59:59.000Z

    This manuscript focuses on a novel actively controlled hybrid magnetic battery/ultracapacitor based energy storage system (ESS) for vehicular propulsion systems. A stand-alone battery system might not be sufficient to satisfy peak power demand and transient load variations in hybrid and plug-in hybrid electric vehicles (HEV, PHEV). Active battery/ultracapacitor hybrid ESS provides a better solution in terms of efficient power management and control flexibility. Moreover, the voltage of the battery pack can be selected to be different than that of the ultracapacitor, which will result in flexibility of design as well as cost and size reduction of the battery pack. In addition, the ultracapacitor bank can supply or recapture a large burst of power and it can be used with high C-rates. Hence, the battery is not subjected to supply peak and sharp power variations, and the stress on the battery will be reduced and the battery lifetime would be increased. Utilizing ultracapacitor results in effective capturing of the braking energy, especially in sudden braking conditions.

  3. Designing of Hybrid Power Generation System using Wind energy- Photovoltaic Solar energy- Solar energy with Nanoantenna

    E-Print Network [OSTI]

    All the natural wastage energies are used for production of Electricity. Thus, the Electrical Power or Electricity is available with a minimum cost and pollution free to anywhere in the world at all times. This process reveals a unique step in electricity generation and availability from natural resources without hampering the ecological balance. This paper describes a new and evolving Electrical Power Generation System by integrating simultaneously photovoltaic Solar Energy, solar Energy with Nano-antenna, Wind Energy and non conventional energy sources. We can have an uninterrupted power supply irrespective of the natural condition without any sort of environmental pollution. Moreover this process yields the least production cost for electricity generation. Utilization of lightning energy for generation of electricity reveals a new step. The set-up consists of combination of photo-voltaic solar-cell array & Nano-anteena array, a mast mounted wind generator, lead-acid storage batteries, an inverter unit to convert DC power to AC power, electrical lighting loads and electrical heating loads, several fuse and junction boxes and associated wiring, and test instruments for measuring voltages, currents, power factors, and harmonic contamination data throughout the system. This hybrid solar-wind power generating system will extensively use in the Industries and also in external use like home appliance.

  4. Ca II H and K filter photometry on the uvby system. I - The standard system

    SciTech Connect (OSTI)

    Anthony-twarog, B.J.; Twarog, B.A.; Laird, J.B.; Payne, D. (Kansas, University, Lawrence (USA) Cerro Tololo Inter-American Observatory, La Serena (Chile) Bowling Green State University, OH (USA))

    1991-05-01T23:59:59.000Z

    A fifth filter (fwhm = 90 A) centered on Ca II H and K has been developed for use with the standard uvby system. The filter, called Ca, is designed primarily for applications to metal-poor dwarfs and red giants, regions where the uvby metallicity index, m(l), loses some sensitivity. An index, hk, is defined by replacing v in m(l) by Ca. The effects of interstellar extinction on the index are modeled and demonstrated to be modest and relatively insensitive to spectral type. Observations of V, (b-y), and hk for 163 primary standards are detailed and transformed to the standard V and (b-y) system. A qualitative analysis using only the primary standards indicates that hk is more sensitive than m(l) over the regions of interest by about a factor of 3. 58 refs.

  5. Extended Abstract Draft THERMES II 2007 2007 Thermal Challenges in Next Generation Electronic System II

    E-Print Network [OSTI]

    that micro-refrigeration systems can be used for electronics cooling but further research in the area AND CHALLENGES OF FUTURE REFRIGERATION COOLING TECHNIQUES AS ELECTRONICS COOLING SYSTEMS Lorenzo Cremaschi, Eckhard A Groll*, and Suresh V Garimella Cooling Technologies Research Center, School of Mechanical

  6. Mg II Selected Absorbers: Ionization structures and a Survey of Weak Systems

    E-Print Network [OSTI]

    Christopher W. Churchill

    1997-09-12T23:59:59.000Z

    First results from a study of high ionization absorption properties in roughly 30 Mg II absorption selected galaxies are presented. We have tested for correlations of Mg II, C IV, Si IV, N V, and O VI equivalent widths with the galaxy properties and Mg II gas kinematics. The results are suggestive of multi-phase halos with little to no global ionization gradient with impact parameter. C IV may arise in both the Mg II - Lyman alpha clouds and a high ionization "halo" traced by O VI. We also report on an unbiased survey for weak Mg II systems using HIRES/Keck spectra. At = 0.9, we find dN/dz = 1.6 +/- 0.1 for 0.02 = -0.3 +/- 0.4 measured for the sample. We suggest that weak Mg II absorbers comprise a substantial yet-to-be explored population. If weak systems select the LSB and/or dwarf galaxy population, then the weakest Mg II absorbers may provide one of the most sensitive tracers of chemical enrichment and evolution of the UV background from z = 2 to z = 0.

  7. Hybrid Control Network Intrusion Detection Systems for Automated Power Distribution Systems

    E-Print Network [OSTI]

    Parvania, Masood; Koutsandria, Georgia; Muthukumar, Vishak; Peisert, Sean; McParland, Chuck; Scaglione, Anna

    2014-01-01T23:59:59.000Z

    Security protocols against cyber attacks in the distributioncyber security weak- ness and system fragility of power distribution

  8. MODEL AND ALGORITHM EVALUATION FOR THE HYBRID UF6 CONTAINER INSPECTION SYSTEM

    SciTech Connect (OSTI)

    McDonald, Benjamin S.; Jordan, David V.; Orton, Christopher R.; Mace, Emily K.; Smith, Leon E.; Wittman, Richard S.

    2011-06-14T23:59:59.000Z

    ABSTRACT Pacific Northwest National Laboratory (PNNL) is developing an automated UF6 cylinder verification station concept based on the combined collection of traditional enrichment-meter (186 keV photons from U-235) data and non-traditional, neutron-induced, high-energy gamma-signatures (3-8.5 MeV) with an array of collimated, medium-resolution scintillators. Previous (2010) work at PNNL demonstrated proof-of-principle that this hybrid method yields accurate, full-volume assay of the cylinder enrichment, reduces systematic errors when compared to several other enrichment assay methods, and provides simplified instrumentation and algorithms suitable for long-term unattended operations. We used Monte Carlo modeling with MCNP5 to support system design (e.g., number and configuration of detector arrays, and design of iron/poly collimators for enhanced (n,?) conversion) and enrichment algorithm development. We developed a first-generation modeling framework in 2010. These tools have since been expanded, refined and benchmarked against field measurements with a prototype system of a 30B cylinder population (0.2 to 4.95 weight % U-235). The MCNP5 model decomposes the radiation transport problem into a linear superposition of “basis spectra” representing contributions from the different uranium isotopes and gamma-ray generation mechanisms (e.g. neutron capture). This scheme accommodates fast generation of “virtual assay signatures” for arbitrary enrichment, material age, and fill variations. Ongoing (FY-2011) refinements to the physics model include accounting for generation of bremsstrahlung photons, arising primarily from the beta decay of Pa-234m, a U-238 daughter. We are using the refined model to optimize collimator design for the hybrid method. The traditional assay method benefits from a high degree of collimation (to isolate each detector’s field-of-view) and relatively small detector area, while the non-traditional method benefits from a wide field-of-view, i.e. less collimation and larger detectors. We implement the enrichment-meter method by applying a square-wave digital filter to a raw spectrum and extracting the 186-keV peak area directly from the convolute spectrum. Ongoing enhancements to this approach include mitigating a systematic peak-area measurement deficit arising from curvature in the spectrum continuum shape. An optimized system prototype based on model results is utilized in a new set of 2011 field measurements, and model and measurement enrichment assay uncertainties are compared.

  9. Controllability of optical bistability, cooling and entanglement in hybrid cavity optomechanical systems by nonlinear atom-atom interaction

    E-Print Network [OSTI]

    A. Dalafi; M. H. Naderi; M. Soltanolkotabi

    2013-04-17T23:59:59.000Z

    We investigate the effects of atomic collisions as well as optomechanical mirror-field coupling on the optical bistability in a hybrid system consisting of a Bose-Einstein condensate inside a driven optical cavity with a moving end mirror. It is shown that the bistability of the system can be controlled by the s-wave scattering frequency which can provide the possibility of realizing a controllable optical switch. On the other hand, by studying the effect of the Bogoliubov mode, as a secondary mechanical mode relative to the mirror vibrations, on the cooling process as well as the bipartite mirror-field and atom-field entanglements we find an interpretation for the cooling of the Bogoliubov mode. The advantage of this hybrid system in comparison to the bare optomecanical cavity with a two-mode moving mirror is the controllability of the frequency of the secondary mode through the s-wave scattering interaction.

  10. Communication between the Micro VAX II and Motorola System-1000 for the protein crystallography data acquisition system

    SciTech Connect (OSTI)

    Wang, Hong; Kelley, M.A.

    1989-02-07T23:59:59.000Z

    The HFBR H3A project is designed to study internal structure of biological protein. The data acquisition system will make possible the collection of images in a real-time environment. A Motorola System-1000 with 68020/68881 processor and coprocessor is a real-time microcomputer that controls the data acquisition from two dimensional detectors, a spectrometer controlled by five motors etc. A Micro VAX II is the experimental computer, requesting control functions and defining parameters to the Motorola, and performing final data analysis. In this project, the commands and data are transferred from a Micro VAX II to a Motorola System-1000, the data and return parameters are transferred from the Motorola System-1000 to the Micro VAX II. It is necessary that the same device transfer to/from the Motorola be shared on the Micro VAX II side. Real-time data transfer and real-time control are needed for this data acquisition. The communication between the Motorola System-1000 and the Micro VAX II is performed by the VMIVME-DR11W card of the VME Microsystems International Corporation and the MV-DR11-W card of the MDB Systems Inc. 4 figs.

  11. Definition of the Semisubmersible Floating System for Phase II of OC4

    SciTech Connect (OSTI)

    Robertson, A.; Jonkman, J.; Masciola, M.; Song, H.; Goupee, A.; Coulling, A.; Luan, C.

    2014-09-01T23:59:59.000Z

    Phase II of the Offshore Code Comparison Collaboration Continuation (OC4) project involved modeling of a semisubmersible floating offshore wind system as shown below. This report documents the specifications of the floating system, which were needed by the OC4 participants for building aero-hydro-servo-elastic models.

  12. Hybrid Control Network Intrusion Detection Systems for Automated Power Distribution Systems

    E-Print Network [OSTI]

    Peisert, Sean

    ) for protecting automated distribution systems (ADS) against certain types of cyber attacks in a new way, distribution au- tomation, network security, intrusion detection systems. I. INTRODUCTION A. Scope and Goals their development with that of an appropriate cyber security frame- work that would prevent attackers from gaining

  13. P.J. Antsaklis, "Hybrid and Supervisory Control Systems in Autonomous Underwater Vehicles," First International Workshop on A utonomous U nderwater V ehicles f o r S hallow W aters a nd C oastal

    E-Print Network [OSTI]

    Antsaklis, Panos

    P.J. Antsaklis, "Hybrid and Supervisory Control Systems in Autonomous Underwater Vehicles," First, "Hybrid and Supervisory Control Systems in Autonomous Underwater Vehicles," First International Workshop , pp. 135-139, Lafayette, Louisiana, February 17-19, 1998. #12;P.J. Antsaklis, "Hybrid and Supervisory

  14. Defining manganese(II) removal processes in passive coal mine drainage treatment systems through laboratory incubation experiments

    E-Print Network [OSTI]

    Burgos, William

    - trations. At operating coal mines, the most commonly used ``active treatment'' method to remove MnDefining manganese(II) removal processes in passive coal mine drainage treatment systems through for the passive removal of Mn(II) from coal mine drainage (CMD). Aqueous Mn(II) is removed via oxidative

  15. Digestion of frozen/thawed food waste in the hybrid anaerobic solid-liquid system

    SciTech Connect (OSTI)

    Stabnikova, O. [School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)], E-mail: costab@ntu.edu.sg; Liu, X.Y.; Wang, J.Y. [School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)

    2008-07-01T23:59:59.000Z

    The hybrid anaerobic solid-liquid (HASL) system, which is a modified two-phase anaerobic digester, is to be used in an industrial scale operation to minimize disposal of food waste at incineration plants in Singapore. The aim of the present research was to evaluate freezing/thawing of food waste as a pre-treatment for its anaerobic digestion in the HASL system. The hydrolytic and fermentation processes in the acidogenic reactor were enhanced when food waste was frozen for 24 h at -20 deg. C and then thawed for 12 h at 25 deg. C (experiment) in comparison with fresh food waste (control). The highest dissolved COD concentrations in the leachate from the acidogenic reactors were 16.9 g/l on day 3 in the control and 18.9 g/l on day 1 in the experiment. The highest VFA concentrations in the leachate from the acidogenic reactors were 11.7 g/l on day 3 in the control and 17.0 g/l on day 1 in the experiment. The same volume of methane was produced during 12 days in the control and 7 days in the experiment. It gave the opportunity to diminish operational time of batch process by 42%. The effect of freezing/thawing of food waste as pre-treatment for its anaerobic digestion in the HASL system was comparable with that of thermal pre-treatment of food waste at 150 deg. C for 1 h. However, estimation of energy required either to heat the suspended food waste to 150 deg. C or to freeze the same quantity of food waste to -20 deg. C showed that freezing pre-treatment consumes about 3 times less energy than thermal pre-treatment.

  16. Building America Webinar: High Performance Space Conditioning Systems, Part II

    Broader source: Energy.gov [DOE]

    The webinar on Nov. 18, 2014, continued the series on strategies to improve the performance of HVAC systems for low load homes and home performance retrofits.

  17. An advanced hybrid reprocessing system based on UF{sub 6} volatilization and chromatographic separation

    SciTech Connect (OSTI)

    Wei, Yuezhou [Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240 (China); Tohoku University, Aoba-ku, Sendai 980-8578 (Japan); Liu, Ruiqin; Wu, Yan; Zu, Jianhua; Zhao, Long [Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240 (China); Mimura, Hitoshi [Tohoku University, Aoba-ku, Sendai 980-8578 (Japan); Shi, Weiqun; Chai, Zhifang [Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049 (China); Yang, Jinling; Ding, Youqian [China Institute of Atomic Energy, Beijing 102413 (China)

    2013-07-01T23:59:59.000Z

    To recover U, Pu, MA (Np, Am, Cm) and some specific fission products FPs (Cs, Sr, Tc, etc.) from various spent nuclear fuels (LWR/FBR: Oxide, Metal Fuels), we are studying an advanced hybrid reprocessing system based on UF6 volatilization (Pyro) and chromatographic separation (Aqueous). Spent fuels are de-cladded by means of thermal and mechanical methods and then applied to the fluorination/volatilization process, which selectively recovers the most amount of U. Then, the remained fuel components are converted to oxides and dissolved by HNO{sub 3} solution. Compared to U, since Pu, MA and FPs are significantly less abundant in spent fuels, the scale of the aqueous separation process could become reasonably small and result in less waste. For the chromatographic separation processes, we have prepared different types of porous silica-based organic/inorganic adsorbents with fast diffusion kinetics, improved chemical stability and low pressure drop in a packed column. So they are advantageously applicable to efficient separation of the actinides and FP elements from the fuel dissolved solution. In this work, adsorption and separation behavior of representative actinides and FP elements was studied. Small scale separation tests using simulated and genuine fuel dissolved solutions were carried out to verify the feasibility of the proposed process. (authors)

  18. ANNUAL REPORT FOUNDATIONS OF HYBRID

    E-Print Network [OSTI]

    California at Irvine, University of

    Online Hierarchical Fault-Adaptive Control 39 Development of engine models for combustion engine 15 A Deterministic Operational Semantics for Hybrid System Simulations 15 Building Efficient Simulations from Hybrid Bond Graph Models 16 Going Beyond Zeno 18 2.1.1.d. Stochastic Hybrid Systems 18

  19. EXPANDABLE HYBRID SYSTEMS FOR MULTI-USER MINI-GRIDS Michel Vandenbergh1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the company SMA Regelsysteme GmbH. Keywords: Hybrid - 1: Rural Electrification - 2: Villages - 3 1H, Hannoversche St. 1-5, D-34266 Kassel tel +49-561-9522321, reekers@sma.de ABSTRACT: Village electrification

  20. Hybrid Parallelism for Volume Rendering on Large, Multi- and Many-core Systems

    SciTech Connect (OSTI)

    Howison, Mark; Bethel, E. Wes; Childs, Hank

    2011-01-01T23:59:59.000Z

    With the computing industry trending towards multi- and many-core processors, we study how a standard visualization algorithm, ray-casting volume rendering, can benefit from a hybrid parallelism approach. Hybrid parallelism provides the best of both worlds: using distributed-memory parallelism across a large numbers of nodes increases available FLOPs and memory, while exploiting shared-memory parallelism among the cores within each node ensures that each node performs its portion of the larger calculation as efficiently as possible. We demonstrate results from weak and strong scaling studies, at levels of concurrency ranging up to 216,000, and with datasets as large as 12.2 trillion cells. The greatest benefit from hybrid parallelism lies in the communication portion of the algorithm, the dominant cost at higher levels of concurrency. We show that reducing the number of participants with a hybrid approach significantly improves performance.

  1. Nuclear Hybrid Energy System: Molten Salt Energy Storage (Summer Report 2013)

    SciTech Connect (OSTI)

    Piyush Sabharwall; Michael George mckellar; Su-Jong Yoon

    2013-11-01T23:59:59.000Z

    Effective energy use is a main focus and concern in the world today because of the growing demand for energy. The nuclear hybrid energy system (NHES) is a valuable technical concept that can potentially diversify and leverage existing energy technologies. This report considers a particular NHES design that combines multiple energy systems including a nuclear reactor, energy storage system (ESS), variable renewable generator (VRG), and additional process heat applications. Energy storage is an essential component of this particular NHES because its design allows the system to produce peak power while the nuclear reactor operates at constant power output. Many energy storage options are available, but this study mainly focuses on a molten salt ESS. The primary purpose of the molten salt ESS is to enable the nuclear reactor to be a purely constant heat source by acting as a heat storage component for the reactor during times of low demand, and providing additional capacity for thermo-electric power generation during times of peak electricity demand. This report will describe the rationale behind using a molten salt ESS and identify an efficient molten salt ESS configuration that may be used in load following power applications. Several criteria are considered for effective energy storage and are used to identify the most effective ESS within the NHES. Different types of energy storage are briefly described with their advantages and disadvantages. The general analysis to determine the most efficient molten salt ESS involves two parts: thermodynamic, in which energetic and exergetic efficiencies are considered; and economic. Within the molten salt ESS, the two-part analysis covers three major system elements: molten salt ESS designs (two tank direct and thermocline), the molten salt choice, and the different power cycles coupled with the molten salt ESS. Analysis models are formulated and analyzed to determine the most effective ESS. The results show that the most efficient idealized energy storage system is the two tank direct molten salt ESS with an Air Brayton combined cycle using LiF-NaF-KF as the molten salt, and the most economical is the same design with KCl MgCl2 as the molten salt. With energy production being a major worldwide industry, understanding the most efficient molten salt ESS boosts development of an effective NHES with cheap, clean, and steady power.

  2. Heavy vehicle hybrid propulsion systems R and D program plan, FY 2000-2005

    SciTech Connect (OSTI)

    None

    2000-07-01T23:59:59.000Z

    This report contains the program plan and background information for the Heavy Vehicle Hybrid Propulsion R and D Program sponsored by the Department of Energy's Office of Heavy Vehicle Technologies. The program is a collaboration between industry and government established for the development of advanced hybrid-electric propulsion technology for urban cycle trucks and buses. It targets specific applications to enhance potential market success. Potential end-users are also involved.

  3. Building America Webinar: High Performance Space Conditioning Systems, Part II

    Broader source: Energy.gov [DOE]

    The webinar will continue our series on strategies to improve the performance of HVAC systems for low load homes and home performance retrofits. Presenters and specific topics for this webinar...

  4. Module 8: Fuel Cell Hybrid Electric Vehicles

    Broader source: Energy.gov [DOE]

    This course covers hybrid electric vehicles, electric motors, auxiliary power units, generators, energy storage systems, regenerative braking, control systems

  5. A New Four-Barrel Pellet Injection System for the TJ-II Stellarator

    SciTech Connect (OSTI)

    Combs, Stephen Kirk [ORNL] [ORNL; Foust, Charles R [ORNL] [ORNL; McGill, James M [ORNL] [ORNL; Baylor, Larry R [ORNL] [ORNL; Caughman, John B [ORNL] [ORNL; Fehling, Dan T [ORNL] [ORNL; Harris, Jeffrey H [ORNL] [ORNL; Meitner, Steven J [ORNL] [ORNL; Rasmussen, David A [ORNL] [ORNL; McCarthy, K. J. [EURATOM-CIEMAT, Madrid, Spain] [EURATOM-CIEMAT, Madrid, Spain; Chamorro, M. [Laboratory Nacional de Fusion, Madrid, Spain] [Laboratory Nacional de Fusion, Madrid, Spain; Garcia, R. [Laboratory Nacional de Fusion, Madrid, Spain] [Laboratory Nacional de Fusion, Madrid, Spain; Hildago, C. [Laboratory Nacional de Fusion, Madrid, Spain] [Laboratory Nacional de Fusion, Madrid, Spain; Medrano, M. [Laboratory Nacional de Fusion, Madrid, Spain] [Laboratory Nacional de Fusion, Madrid, Spain; Unamuno, R. [Laboratory Nacional de Fusion, Madrid, Spain] [Laboratory Nacional de Fusion, Madrid, Spain

    2011-01-01T23:59:59.000Z

    A new pellet injection system for the TJ-II stellarator has been developed/constructed as part of a collaboration between the Oak Ridge National Laboratory (ORNL) and the Centro de Investigaciones Energ ticas, Medioambientales y Tecnol gicas (CIEMAT). ORNL is providing most of the injector hardware and instrumentation, the pellet diagnostics, and the pellet transport tubes; CIEMAT is responsible for the injector stand/interface to the stellarator, cryogenic refrigerator, vacuum pumps/ballast volumes, gas manifolds, remote operations, plasma diagnostics, and data acquisition. The pellet injector design is an upgraded version of that used for the ORNL injector installed on the Madison Symmetric Torus (MST). It is a four-barrel system equipped with a cryogenic refrigerator for in situ hydrogen pellet formation and a combined mechanical punch/propellant valve system for pellet acceleration (speeds ~100 to 1000 m/s). On TJ-II, it will be used as an active diagnostic and for fueling. To accommodate the plasma experiments planned for TJ-II, pellet sizes significantly smaller than those typically used for the MST application are required. The system will initially be equipped with four different pellet sizes, with the gun barrel bores ranging between ~0.5 to 1.0 mm. The new system is almost complete and is described briefly here, highlighting the new features added since the original MST injector was constructed. Also, the future installation on TJ-II is reviewed.

  6. Synthesis and characterization of a new layered organic-inorganic hybrid nickel(II) 1,4:5,8-naphthalenediimide bis-phosphonate, exhibiting canted antiferromagnetism, with T{sub c}{approx}21 K

    SciTech Connect (OSTI)

    Bauer, Elvira M. [Istituto di Struttura della Materia del CNR, Sez. di Montelibretti, Via Salaria km 29.3, I-00016 Monterotondo Stazione (Italy)], E-mail: Elvira.Bauer@ism.cnr.it; Bellitto, Carlo [Istituto di Struttura della Materia del CNR, Sez. di Montelibretti, Via Salaria km 29.3, I-00016 Monterotondo Stazione (Italy); Gomez Garcia, Carlos J. [Instituto de Ciencia Molecular, University of Valencia, Pol La Coma s/n, E-46980 Paterna, Valencia (Spain)], E-mail: carlos.gomez@uv.es; Righini, Guido [Istituto di Struttura della Materia del CNR, Sez. di Montelibretti, Via Salaria km 29.3, I-00016 Monterotondo Stazione (Italy)

    2008-05-15T23:59:59.000Z

    A new Ni(II) layered hybrid organic-inorganic compound of formula Ni{sub 2}[(NDI-BP)(H{sub 2}O){sub 2}].2H{sub 2}O has been prepared in very mild conditions from N,N'-bis(2-phosphonoethyl)napthalene-1,4:5,8-tetracarboximide (NDI-BP ligand) and NiCl{sub 2}. The X-ray powder structure characterization of the title compound suggests a pillared layered organic-inorganic hybrid structure. The distance between the organic and inorganic layers has been found to be 17.8 A. The inorganic layers consist of corner sharing [NiO{sub 5}(H{sub 2}O)] octahedra and they are pillared by the diphosphonate groups. DC and AC magnetic measurements as a function of temperature and field indicate the presence of 2D antiferromagnetic exchange interactions between the nearest-neighbor Ni(II) ions below 100 K. A long-range magnetic ordering at T{sub c}{approx}21 K has been established and is attributed to the presence of spin canting. AC magnetic measurements as a function of temperature at different frequencies confirm the occurrence of the magnetic ordering temperature at T=21 K and the presence of a slight structural disorder in the title compound. - Graphical abstract: A new layered hybrid organic-inorganic Ni(II) N,N'-bis(2-phosphonoethyl)-naphthalene 1,4:5,8 tetracarboxydiimide complex has been synthesized and characterized. Magnetic measurements as a function of temperature and at different fields show that the compound is magnetically ordered below T{sub c}{approx}21 K.

  7. MODELING, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP

    E-Print Network [OSTI]

    MODELING, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS Thesis Approved by: Dr.................................................................................................................... 16 MODELING OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS

  8. Testing of a 50-kW Wind-Diesel Hybrid System at the National Wind Technology Center

    SciTech Connect (OSTI)

    Corbus, D. A.; Green, H. J.; Allderdice, A.; Rand, K.; Bianchi, J.; Linton, E.

    1996-07-01T23:59:59.000Z

    In remote off-grid villages and communities, a reliable power source is important in improving the local quality of life. Villages often use a diesel generator for their power, but fuel can be expensive and maintenance burdensome. Including a wind turbine in a diesel system can reduce fuel consumption and lower maintenance, thereby reducing energy costs. However, integrating the various components of a wind-diesel system, including wind turbine, power conversion system, and battery storage (if applicable), is a challenging task. To further the development of commercial hybrid power systems, the National Renewable Energy Laboratory (NREL), in collaboration with the New World Village Power Corporation (NWVP), tested a NWVP 50-kW wind-diesel hybrid system connected to a 15/50 Atlantic Orient Corporation (AOC) wind turbine. Testing was conducted from October 1995 through March 1996 at the National Wind Technology Center (NWTC). A main objective of the testing was to better understand the application of wind turbines to weak grids typical of small villages. Performance results contained in this report include component characterization, such as power conversion losses for the rotary converter system and battery round trip efficiencies. In addition, system operation over the test period is discussed with special attention given to dynamic issues. Finally, future plans for continued testing and research are discussed.

  9. Intelligent Robotic Systems Jana Kosecka, 4444 Research II

    E-Print Network [OSTI]

    Kosecka, Jana

    Systems AGV's - automated guided vehicles AUV's - automated unmanned vehicles #12;Applications - Space for samples of meteorites · Volcanos ­ analyze gas samples from volcanos #12;Applications: Underwater robotics ­ length about 25 cm · Sensors ­ color camera ­ stereo microphone 1 #12;#12;APPLICATIONS ­ Unmanned Aerial

  10. The number of genotypic assignments on a genealogy II. Further results for linear systems

    E-Print Network [OSTI]

    The number of genotypic assignments on a genealogy II. Further results for linear systems N. J known phenotypes could be calculated for an arbitrary genealogy. Here, we present further results for several regular genealogies constructed according to some specified recursive formulae and for which

  11. Complexity of classical dynamics of molecular systems. II. Finite statistical complexity of a waterNa

    E-Print Network [OSTI]

    Nerukh, Dmitry

    Complexity of classical dynamics of molecular systems. II. Finite statistical complexity of a water complexity. One of the advantages of this approach is that it is based on informatic-theoretical analysis; accepted 9 September 2002 The computational mechanics approach has been applied to the orientational

  12. Operator interface for the PEP-II low level RF control system

    SciTech Connect (OSTI)

    Allison, S.; Claus, R.

    1997-05-01T23:59:59.000Z

    This paper focuses on the operational aspects of the low level RF control system being built for the PEP-II storage rings at SLAC. Subsystems requiring major operational considerations include displays for monitor and control from UNIX workstations, slow feedback loops and control sequences residing on microprocessors, and various client applications in the existing SLAC Linear Collider (SLC) control system. Since commissioning of PEP-II RF is currently in-progress, only those parts of the control system used during this phase are discussed in detail. Based on past experience with the SLC control system, it is expected that effort expended during commissioning on a solid user interface will result in smoother transition to full reliable 24-hour-a-day operation.

  13. Enertech 15-kW wind-system development. Phase II. Fabrication and test

    SciTech Connect (OSTI)

    Zickefoose, C.R.

    1982-12-01T23:59:59.000Z

    This Phase II report presents a description of the Enertech 15 kW prototype wind system hardware fabrication; results of component tests; and results of preliminary testing conducted at Norwich, VT and the RF Wind Energy Research Center. In addition, the assembly sequence is documented. During testing, the unit experienced several operational problems, but testing proved the design concept and demonstrated the system's ability to meet the contract design specifications for power output.

  14. Vehicle Technologies Office: Materials for Hybrid and Electric...

    Energy Savers [EERE]

    Materials for Hybrid and Electric Drive Systems Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems The Vehicle Technologies Office (VTO) is working to...

  15. Development of Design and Simulation Tool for Hybrid Geothermal...

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

    Development of Design and Simulation Tool for Hybrid Geothermal Heat Pump System Development of Design and Simulation Tool for Hybrid Geothermal Heat Pump System This project will...

  16. Laser Intertial Fusion Energy: Neutronic Design Aspects of a Hybrid Fusion-Fission Nuclear Energy System

    SciTech Connect (OSTI)

    Kramer, K

    2010-04-08T23:59:59.000Z

    This study investigates the neutronics design aspects of a hybrid fusion-fission energy system called the Laser Fusion-Fission Hybrid (LFFH). A LFFH combines current Laser Inertial Confinement fusion technology with that of advanced fission reactor technology to produce a system that eliminates many of the negative aspects of pure fusion or pure fission systems. When examining the LFFH energy mission, a significant portion of the United States and world energy production could be supplied by LFFH plants. The LFFH engine described utilizes a central fusion chamber surrounded by multiple layers of multiplying and moderating media. These layers, or blankets, include coolant plenums, a beryllium (Be) multiplier layer, a fertile fission blanket and a graphite-pebble reflector. Each layer is separated by perforated oxide dispersion strengthened (ODS) ferritic steel walls. The central fusion chamber is surrounded by an ODS ferritic steel first wall. The first wall is coated with 250-500 {micro}m of tungsten to mitigate x-ray damage. The first wall is cooled by Li{sub 17}Pb{sub 83} eutectic, chosen for its neutron multiplication and good heat transfer properties. The {sub 17}Pb{sub 83} flows in a jacket around the first wall to an extraction plenum. The main coolant injection plenum is immediately behind the Li{sub 17}Pb{sub 83}, separated from the Li{sub 17}Pb{sub 83} by a solid ODS wall. This main system coolant is the molten salt flibe (2LiF-BeF{sub 2}), chosen for beneficial neutronics and heat transfer properties. The use of flibe enables both fusion fuel production (tritium) and neutron moderation and multiplication for the fission blanket. A Be pebble (1 cm diameter) multiplier layer surrounds the coolant injection plenum and the coolant flows radially through perforated walls across the bed. Outside the Be layer, a fission fuel layer comprised of depleted uranium contained in Tristructural-isotropic (TRISO) fuel particles having a packing fraction of 20% in 2 cm diameter fuel pebbles. The fission blanket is cooled by the same radial flibe flow that travels through perforated ODS walls to the reflector blanket. This reflector blanket is 75 cm thick comprised of 2 cm diameter graphite pebbles cooled by flibe. The flibe extraction plenum surrounds the reflector bed. Detailed neutronics designs studies are performed to arrive at the described design. The LFFH engine thermal power is controlled using a technique of adjusting the {sup 6}Li/{sup 7}Li enrichment in the primary and secondary coolants. The enrichment adjusts system thermal power in the design by increasing tritium production while reducing fission. To perform the simulations and design of the LFFH engine, a new software program named LFFH Nuclear Control (LNC) was developed in C++ to extend the functionality of existing neutron transport and depletion software programs. Neutron transport calculations are performed with MCNP5. Depletion calculations are performed using Monteburns 2.0, which utilizes ORIGEN 2.0 and MCNP5 to perform a burnup calculation. LNC supports many design parameters and is capable of performing a full 3D system simulation from initial startup to full burnup. It is able to iteratively search for coolant {sup 6}Li enrichments and resulting material compositions that meet user defined performance criteria. LNC is utilized throughout this study for time dependent simulation of the LFFH engine. Two additional methods were developed to improve the computation efficiency of LNC calculations. These methods, termed adaptive time stepping and adaptive mesh refinement were incorporated into a separate stand alone C++ library name the Adaptive Burnup Library (ABL). The ABL allows for other client codes to call and utilize its functionality. Adaptive time stepping is useful for automatically maximizing the size of the depletion time step while maintaining a desired level of accuracy. Adaptive meshing allows for analysis of fixed fuel configurations that would normally require a computationally burdensome number of depletion zones. Alternatively, Adaptive M

  17. Navy mobility fuels forecasting system. Phase II, report

    SciTech Connect (OSTI)

    Hadder, G.R.; Vineyard, T.A.; Das, S.; Lee, R.

    1986-06-01T23:59:59.000Z

    The Department of the Navy (DON) requires an improved capability to forecast mobility fuel availability and quality. The changing patterns in fuel availability and quality are important in planning the Navy's fuel use strategy and the Mobility Fuels Technology Program. Until recently, there has been a long-term decline in the quality of crude oil entering world markets and a shift in refinery capacities domestically and worldwide. Three publicly available models developed by the Energy Information Administration of the Department of Energy were selected as the basis of the Navy Mobility Fuels Forecasting System (NMFFS). The system was used to analyze the availability and quality of jet fuel (JP-5) and diesel fuel (F-76) that could be produced in several domestic and foreign refinery regions under business-as-usual and four hypothetical world crude oil disruption scenarios in 1990. The results from the study indicate that jet fuel availability could be reduced in some refinery regions under the disruptions studied. Various strategies were investigated for increasing JP-5 production during the disruptions. In general, the availability of JP-5 was more limited than F-76 under the disruption cases studied; however, in all cases one or more strategies were identified to increase refinery output of JP-5 in all study regions. Based on the four hypothetical disruption scenarios studied, the analysis suggested tat JP-5 production could be increased by relaxing the smoke point, freezing point, flash point, and by increasing the refiners' gate price for the jet fuel in the study regions. A more complete analysis of navy mobility fuel trends, as well as several changes in the models to make them easier to use in fuel planning and forecastig studies, are planned as part of the third phase of this program.

  18. HYLIFE-II power conversion system design and cost study

    SciTech Connect (OSTI)

    Hoffman, M.A. (California Univ., Davis, CA (USA). Dept. of Mechanical, Aeronautical and Materials Engineering)

    1990-09-01T23:59:59.000Z

    The power conversion system for the HYLIFE-2 fusion power plant has been defined to include the IHX's (intermediate heat exchangers) and everything that support the exchange of energy from the reactor. It is referred to simply as the BOP (balance of plant) in the rest of this report. The above is a convenient division between the reactor equipment and the rest of the fusion power plant since the BOP design and cost then depend only on the specification of the thermal power to the IHX's and the temperature of the primary Flibe coolant into and out of the IHX's, and is almost independent of the details of the reactor design. The main efforts during the first year have been on the definition and thermal-hydraulics of the IHX's, the steam generators and the steam power plant, leading to the definition of a reference BOP with the molten salt, Flibe, as the primary coolant. A summary of the key results in each of these areas is given in this report.

  19. ROBUST CONTROL ANALYSIS USING REAL-TIME IMPLEMENTATION OF A HYBRID FUEL CELL POWER GENERATION SYSTEM

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ROBUST CONTROL ANALYSIS USING REAL-TIME IMPLEMENTATION OF A HYBRID FUEL CELL POWER GENERATION the control of two identical boost power converters. For the closed-loop control a previously proposed proposed by the authors in former works. The control actuators are the duty cycles of the boost power

  20. Multi-Disciplinary Decision Making and Optimization for Hybrid Electric Propulsion Systems

    SciTech Connect (OSTI)

    Shoultout, Mohamed L. [University of Texas at Austin; Malikopoulos, Andreas [ORNL; Pannala, Sreekanth [ORNL; Chen, Dongmei [University of Texas at Austin

    2014-01-01T23:59:59.000Z

    In this paper, we investigate the trade-offs among the subsystems of a hybrid electric vehicle (HEV), e.g., the engine, motor, and the battery, and discuss the related im- plications for fuel consumption and battery capacity and lifetime. Addressing this problem can provide insights on how to prioritize these objectives based on consumers needs and preferences.

  1. CHERI: A Hybrid Capability-System Architecture for Scalable Software Compartmentalization

    E-Print Network [OSTI]

    Watson, Robert N. M.; Woodruff, Jonathan; Neumann, Peter G.; Moore, Simon W.; Anderson, Jonathan; Chisnall, David; Dave, Nirav; Davis, Brooks; Gudka, Khilan; Laurie, Ben; Murdoch, Steven J.; Norton, Robert; Roe, Michael; Son, Stacey; Vadera, Munraj

    2015-05-26T23:59:59.000Z

    -capability model. At one extreme, an unmodified FreeBSD/MIPS boots without enabling the capability copro- cessor. At the other, a clean-slate single-address-space OS might use capabilities for all protection and domain man- agement. By hybridizing these approaches...

  2. A Hybrid Estimation of Distribution Algorithm for CDMA Cellular System Design

    E-Print Network [OSTI]

    Zhang, Qingfu

    -stage hybrid approach built on estimation of distribution algorithms (EDAs), coupled with a K-means clustering-known K-means clustering and a simple local search algorithm. The first stage aims to find optimal or near, in comparison to SA. The rest of the paper is organized as follows. Section 2 describes the mathe- matical model

  3. MONSTIR II: A 32-channel, multispectral, time-resolved optical tomography system for neonatal brain imaging

    SciTech Connect (OSTI)

    Cooper, Robert J., E-mail: robert.cooper@ucl.ac.uk; Magee, Elliott; Everdell, Nick; Magazov, Salavat; Varela, Marta; Airantzis, Dimitrios; Gibson, Adam P.; Hebden, Jeremy C. [Biomedical Optics Research Laboratory, Department of Medical Physics and Bioengineering, University College London, London WC1E 6BT (United Kingdom)

    2014-05-15T23:59:59.000Z

    We detail the design, construction and performance of the second generation UCL time-resolved optical tomography system, known as MONSTIR II. Intended primarily for the study of the newborn brain, the system employs 32 source fibres that sequentially transmit picosecond pulses of light at any four wavelengths between 650 and 900 nm. The 32 detector channels each contain an independent photo-multiplier tube and temporally correlated photon-counting electronics that allow the photon transit time between each source and each detector position to be measured with high temporal resolution. The system's response time, temporal stability, cross-talk, and spectral characteristics are reported. The efficacy of MONSTIR II is demonstrated by performing multi-spectral imaging of a simple phantom.

  4. Electrochemical Capacitors as Energy Storage in Hybrid-Electric Vehicles: Present Status and Future Prospects

    E-Print Network [OSTI]

    Burke, Andy; Miller, Marshall

    2009-01-01T23:59:59.000Z

    ultracapacitors, fuel cells and hybrid vehicle design. Dr.on electric and hybrid vehicle technology and applicationssupervises testing in the Hybrid Vehicle Propulsion Systems

  5. Noise propagation in hybrid models of nonlinear systems: The Ginzburg–Landau equation

    SciTech Connect (OSTI)

    Taverniers, Søren [Department of Mechanical and Aerospace Engineering, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093 (United States); Alexander, Francis J. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Tartakovsky, Daniel M. [Department of Mechanical and Aerospace Engineering, University of California, San Diego, 9500 Gilman Dr., La Jolla, CA 92093 (United States)

    2014-04-01T23:59:59.000Z

    Every physical phenomenon can be described by multiple models with varying degrees of fidelity. The computational cost of higher fidelity models (e.g., molecular dynamics simulations) is invariably higher than that of their lower fidelity counterparts (e.g., a continuum model based on differential equations). While the former might not be suitable for large-scale simulations, the latter are not universally valid. Hybrid algorithms provide a compromise between the computational efficiency of a coarse-scale model and the representational accuracy of a fine-scale description. This is achieved by conducting a fine-scale computation in subdomains where it is absolutely required (e.g., due to a local breakdown of a continuum model) and coupling it with a coarse-scale computation in the rest of a computational domain. We analyze the effects of random fluctuations generated by the fine-scale component of a nonlinear hybrid on the hybrid's overall accuracy and stability. Two variants of the time-dependent Ginzburg–Landau equation (GLE) and their discrete representations provided by a nearest-neighbor Ising model serve as a computational testbed. Our analysis shows that coupling these descriptions in a one-dimensional simulation leads to erroneous results. Adding a random source term to the GLE provides accurate prediction of the mean behavior of the quantity of interest (magnetization). It also allows the two GLE variants to correctly capture the strength of the microscale fluctuations. Our work demonstrates the importance of fine-scale noise in hybrid simulations, and suggests the need for replacing an otherwise deterministic coarse-scale component of the hybrid with its stochastic counterpart.

  6. Emergency Response Equipment and Related Training: Airborne Radiological Computer System (Model II)

    SciTech Connect (OSTI)

    David P. Colton

    2007-02-28T23:59:59.000Z

    The materials included in the Airborne Radiological Computer System, Model-II (ARCS-II) were assembled with several considerations in mind. First, the system was designed to measure and record the airborne gamma radiation levels and the corresponding latitude and longitude coordinates, and to provide a first overview look of the extent and severity of an accident's impact. Second, the portable system had to be light enough and durable enough that it could be mounted in an aircraft, ground vehicle, or watercraft. Third, the system must control the collection and storage of the data, as well as provide a real-time display of the data collection results to the operator. The notebook computer and color graphics printer components of the system would only be used for analyzing and plotting the data. In essence, the provided equipment is composed of an acquisition system and an analysis system. The data can be transferred from the acquisition system to the analysis system at the end of the data collection or at some other agreeable time.

  7. Annual Report for Hybrid Plasma Reactor/Filter for Transportable Collective Protection Systems—Phase 1B

    SciTech Connect (OSTI)

    Josephson, Gary B.; Tonkyn, Russell G.; Rappe, Kenneth G.; Frye, John G.

    2009-06-01T23:59:59.000Z

    Annual report covering the development of a hybrid nonthermal plasma single-pass filtration system for collective protection. This report covers NTP destruction testing on a high priority Toxic Industrial Material and an surrogate for a sulfur containing chemical agent (e.g. mustard), Effects of catalysts in the nonthermal plasma and catalyst poisoning by the sulfur are presented. Also presented are proof-of-principle data for utilizing ozone created in the NTP as a beneficial reactant to destroy adsorbed contaminants in-situ. Catalysts to decompose the ozone within the adsorbent bed are necessary to convert the adsorber into an ozone reactor.

  8. Corn Hybrids for Texas. 

    E-Print Network [OSTI]

    Rogers, J. S.; McAfee, T. E.

    1954-01-01T23:59:59.000Z

    Corn Hybrids for Terns ST LOCATIONS AREA I AREA II ARE4 Ill AREA IV 2Prdrie View 7.Tylw lZ.Lockhart 17.Waxahachie 22San Antonio 3.Cleveland 8.Mt. Pbctont I3Brsnha B.Garland 23Lamposas 4.Colbqe Sta. 9Sulphw Spp. 14Holland l9.0reenvilb 24...Stephenville ,J* 5.K'rbyvilb I0.Cbrkdb 15.Tanpk 2ODetiion 25.Wllothe TEXAS AGRICULTURAL EXPERIMENT STATION R. D. LEWIS. DIRECTOR, COLLEGE STATION, TEXAS DIGEST The Texas corn acreage planted to hybrids increased from less than 1 percent of the total acrea...

  9. A Multi-Level Grid Interactive Bi-directional AC/DC-DC/AC Converter and a Hybrid Battery/Ultra-capacitor Energy Storage System with Integrated Magnetics for Plug-in Hybrid Electric Vehicles

    SciTech Connect (OSTI)

    Onar, Omer C [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    This study presents a bi-directional multi-level power electronic interface for the grid interactions of plug-in hybrid electric vehicles (PHEVs) as well as a novel bi-directional power electronic converter for the combined operation of battery/ultracapacitor hybrid energy storage systems (ESS). The grid interface converter enables beneficial vehicle-to-grid (V2G) interactions in a high power quality and grid friendly manner; i.e, the grid interface converter ensures that all power delivered to/from grid has unity power factor and almost zero current harmonics. The power electronic converter that provides the combined operation of battery/ultra-capacitor system reduces the size and cost of the conventional ESS hybridization topologies while reducing the stress on the battery, prolonging the battery lifetime, and increasing the overall vehicle performance and efficiency. The combination of hybrid ESS is provided through an integrated magnetic structure that reduces the size and cost of the inductors of the ESS converters. Simulation and experimental results are included as prove of the concept presenting the different operation modes of the proposed converters.

  10. Lower-Energy Energy Storage System (LEESS) Evaluation in a Full-Hybrid Electric Vehicle (HEV) (Presentation)

    SciTech Connect (OSTI)

    Cosgrove, J.; Gonder, J.; Pesaran, A.

    2013-11-01T23:59:59.000Z

    The cost of hybrid electric vehicles (HEVs) (e.g., Toyota Prius or Ford Fusion Hybrid) remains several thousand dollars higher than the cost of comparable conventional vehicles, which has limited HEV market penetration. The battery energy storage device is typically the component with the greatest contribution toward this cost increment, so significant cost reductions/performance improvements to the energy storage system (ESS) can improve the vehicle-level cost-benefit relationship, which would in turn lead to larger HEV market penetration and greater aggregate fuel savings. The National Renewable Energy Laboratory (NREL) collaborated with a United States Advanced Battery Consortium (USABC) Workgroup to analyze trade-offs between vehicle fuel economy and reducing the minimum energy requirement for power-assist HEVs. NREL's analysis showed that significant fuel savings could still be delivered from an ESS with much lower energy storage than previous targets, which prompted the United States Advanced Battery Consortium (USABC) to issue a new set of lower-energy ESS (LEESS) targets that could be satisfied by a variety of technologies, including high-power batteries or ultracapacitors. NREL has developed an HEV test platform for in-vehicle performance and fuel economy validation testing of the hybrid system using such LEESS devices. This presentation describes development of the vehicle test platform and in-vehicle evaluation results using a lithium-ion capacitor ESS-an asymmetric electrochemical energy storage device possessing one electrode with battery-type characteristics (lithiated graphite) and one with ultracapacitor-type characteristics (carbon). Further efforts include testing other ultracapacitor technologies in the HEV test platform.

  11. Advanced control strategies for HVAC&R systems—An overview: Part II: Soft and fusion control

    SciTech Connect (OSTI)

    D. Subbaram Naidu; Craig G. Rieger

    2011-04-01T23:59:59.000Z

    A chronological overview of the advanced control strategies for HVAC&R is presented. The overview focuses on hard-computing or control techniques, such as proportional-integral-derivative, optimal, nonlinear, adaptive, and robust; soft-computing or control techniques, such as neural networks, fuzzy logic, genetic algorithms; and the fusion or hybrid of hard and soft control techniques. Part I focused on hardcontrol strategies; Part II focuses on soft and fusion control and some future directions in HVA&R research. This overview is not intended to be an exhaustive survey on this topic, and any omissions of other works is purely unintentional.

  12. Independent Safety Assessment of the TOPAZ-II space nuclear reactor power system (Revised)

    SciTech Connect (OSTI)

    NONE

    1993-09-01T23:59:59.000Z

    The Independent Safety Assessment described in this study report was performed to assess the safety of the design and launch plans anticipated by the U.S. Department of Defense (DOD) in 1993 for a Russian-built, U.S.-modified, TOPAZ-II space nuclear reactor power system. Its conclusions, and the bases for them, were intended to provide guidance for the U.S. Department of Energy (DOE) management in the event that the DOD requested authorization under section 91b. of the Atomic Energy Act of 1954, as amended, for possession and use (including ground testing and launch) of a nuclear-fueled, modified TOPAZ-II. The scientists and engineers who were engaged to perform this assessment are nationally-known nuclear safety experts in various disciplines. They met with participants in the TOPAZ-II program during the spring and summer of 1993 and produced a report based on their analysis of the proposed TOPAZ-II mission. Their conclusions were confined to the potential impact on public safety and did not include budgetary, reliability, or risk-benefit analyses.

  13. Hybrid solar-fossil fuel power generation

    E-Print Network [OSTI]

    Sheu, Elysia J. (Elysia Ja-Zeng)

    2012-01-01T23:59:59.000Z

    In this thesis, a literature review of hybrid solar-fossil fuel power generation is first given with an emphasis on system integration and evaluation. Hybrid systems are defined as those which use solar energy and fuel ...

  14. Calibration of the Accuscan II In Vivo System for I-131 Thyroid Counting

    SciTech Connect (OSTI)

    Orval R. Perry; David L. Georgeson

    2011-07-01T23:59:59.000Z

    This report describes the March 2011 calibration of the Accuscan II HpGe In Vivo system for I-131 thyroid counting. The source used for the calibration was an Analytics mixed gamma source 82834-121 distributed in an epoxy matrix in a Wheaton Liquid Scintillation Vial with energies from 88.0 keV to 1836.1 keV. The center of the detectors was position 64-feet from the vault floor. This position places the approximate center line of the detectors at the center line of the source in the thyroid tube. The calibration was performed using an RMC II phantom (Appendix J). Validation testing was performed using a Ba-133 source and an ANSI N44.3 Phantom (Appendix I). This report includes an overview introduction and records for the energy/FWHM and efficiency calibrations including verification counting. The Accuscan II system was successfully calibrated for counting the thyroid for I-131 and verified in accordance with ANSI/HPS N13.30-1996 criteria.

  15. M. D. Lemmon and P. J. Antsaklis, "On The Stability of Logical Transitions in Hybrid Control Systems," Technical Report of the ISIS (Interdisciplinary Studies of Intelligent Systems) Group, No. ISIS-93-009,

    E-Print Network [OSTI]

    Antsaklis, Panos

    Systems," Technical Report of the ISIS (Interdisciplinary Studies of Intelligent Systems) Group, No. ISIS of Logical Transitions in Hybrid Control Systems," Technical Report of the ISIS (Interdisciplinary Studies of Intelligent Systems) Group, No. ISIS-93-009, Univ of Notre Dame, December 1993. #12;M. D. Lemmon and P. J

  16. Method and system for determining the torque required to launch a vehicle having a hybrid drive-train

    DOE Patents [OSTI]

    Hughes, Douglas A.

    2006-04-04T23:59:59.000Z

    A method and system are provided for determining the torque required to launch a vehicle having a hybrid drive-train that includes at least two independently operable prime movers. The method includes the steps of determining the value of at least one control parameter indicative of a vehicle operating condition, determining the torque required to launch the vehicle from the at least one determined control parameter, comparing the torque available from the prime movers to the torque required to launch the vehicle, and controlling operation of the prime movers to launch the vehicle in response to the comparing step. The system of the present invention includes a control unit configured to perform the steps of the method outlined above.

  17. PERFORMANCE OF THE LEAD/LIQUID ARGON SHOWER COUNTER SYSTEM OF THE MARK II DETECTOR AT SPEAR

    E-Print Network [OSTI]

    Abrams, G.S.

    2013-01-01T23:59:59.000Z

    of California. PERFORMANCE OF THE LEAD/LIQUID ARGON SHOWERMark II detector is a large lead/liquid argon system of theof-flight information, lead/liquid argon shower counters,

  18. advanced hybrid imaging: Topics by E-print Network

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

    Systems with Applications in Advanced Hybrid Electric Vehicles and Wind Farms with Battery Storage. Open Access Theses and Dissertations Summary: ??Modern hybrid electric vehicles...

  19. Field Test and Performance Verification: Integrated Active Desiccant Rooftop Hybrid System Installed in a School - Final Report: Phase 4A

    SciTech Connect (OSTI)

    Fischer, J

    2005-12-21T23:59:59.000Z

    This report summarizes the results of a field verification pilot site investigation that involved the installation of a hybrid integrated active desiccant/vapor-compression rooftop heating, ventilation, and air-conditioning (HVAC) unit at an elementary school in the Atlanta Georgia area. For years, the school had experienced serious humidity and indoor air quality (IAQ) problems that had resulted in occupant complaints and microbial (mold) remediation. The outdoor air louvers of the original HVAC units had been closed in an attempt to improve humidity control within the space. The existing vapor compression variable air volume system was replaced by the integrated active desiccant rooftop (IADR) system that was described in detail in an Oak Ridge National Laboratory (ORNL) report published in 2004 (Fischer and Sand 2004). The IADR system and all space conditions have been monitored remotely for more than a year. The hybrid system was able to maintain both the space temperature and humidity as desired while delivering the outdoor air ventilation rate required by American Society of Heating, Refrigerating and Air-Conditioning Engineers Standard 62. The performance level of the IADR unit and the overall system energy efficiency was measured and found to be very high. A comprehensive IAQ investigation was completed by the Georgia Tech Research Institute before and after the system retrofit. Before-and-after data resulting from this investigation confirmed a significant improvement in IAQ, humidity control, and occupant comfort. These observations were reported by building occupants and are echoed in a letter to ORNL from the school district energy manager. The IADR system was easily retrofitted in place of the original rooftop system using a custom curb adapter. All work was completed in-house by the school's maintenance staff over one weekend. A subsequent cost analysis completed for the school district by the design engineer of record concluded that the IADR system being investigated was actually less expensive to install than other less-efficient options, most of which were unable to deliver the required ventilation while maintaining the desired space humidity levels.

  20. Response Surfaces for Key Controlled Variables in a Hybrid Solid Oxide Fuel Cell/Gas Turbine System

    SciTech Connect (OSTI)

    Rosen, William G.; Banta, Larry; Gorrell, Megan; Restrepo, Bernardo; Tucker, David

    2012-07-01T23:59:59.000Z

    Hybrid generation systems have been extensively modeled as a first step toward the development of automatic controls for the system. In most cases, it is impossible to validate mathematical models against real hardware because only a handful of hardware systems exist in the world. Data taken from the existing hardware has demonstrated significant nonlinearity, complex coupling between controlled variables, and sometimes non-intuitive behavior. This work exploits the capability of the HyPer hardware test bed at the National Energy Technology Laboratory (NETL) to generate data from a real recuperated gas turbine coupled with hardware simulations of a fuel cell cathode and appropriate ancillary equipment. Prior work has characterized the system only over a limited range of its operating envelope, due to the inability to manipulate multiple control inputs simultaneously. The work presented here fills the gaps using data from a 34 factorial experiment to generate quasi-continuous response surfaces describing the operating state space of the HyPer system. Polynomial correlation functions have been fitted to the data with excellent agreement. Relationships between the control inputs and critical state variables such as cathode mass flow, cathode temperature, turbine inlet and exhaust temperatures and other key system parameters are presented.

  1. Experimental Breeder Reactor-II Primary Tank System Wash Water Workshop

    Broader source: Energy.gov [DOE]

    In 1994 Congress ordered the shutdown of the Experimental Breeder Reactor-II (EBR-II) and a closure project was initiated.

  2. Electrodril system field test program. Phase II: Task C-1-deep drilling system demonstration. Final report for Phase II: Task C-1

    SciTech Connect (OSTI)

    Taylor, P D

    1981-04-01T23:59:59.000Z

    The Electrodril Deep Drilling System field test demonstrations were aborted in July 1979, due to connector problems. Subsequent post test analyses concluded that the field replacable connectors were the probable cause of the problems encountered. The designs for both the male and female connectors, together with their manufacturing processes, were subsequently modified, as was the acceptance test procedures. A total of nine male and nine female connectors were manufactured and delivered during the 2nd Quarter 1980. Exhaustive testing was then conducted on each connector as a precursor to formal qualification testing conducted during the month of October 1980, at the Brown Oil Tool test facility located in Houston, Texas. With this report, requirements under Phase II, Task C-1 are satisfied. The report documents the results of the connector qualification test program which was successfully completed October 28, 1980. In general, it was concluded that connector qualification had been achieved and plans are now in progress to resume the field test demonstration program so that Electrodril System performance predictions and economic viability can be evaluated.

  3. TEST & EVALUATION REPORT FOR THE HEDGEHOG-II PACKAGING SYSTEMS DOT-7A TYPE A CONTAINER

    SciTech Connect (OSTI)

    KELLY, D.L.

    2003-12-29T23:59:59.000Z

    This report documents the US. Department of Transportation Specification 7A (DOT-7A) Type A compliance test and evaluation results for the Hedgehog-II packaging systems. The approved Hedgehog-II packaging configurations provide primary and secondary containment. The approved packaging configurations described within this report are designed to ship Type A quantities of radioactive materials, normal form. Contents may be in solid or liquid form. Liquids transported in the approved 1 L glass bottle assembly shall have a specific gravity of less than or equal to 1.6. Liquids transported in all other approved configurations shall have a specific gravity of less than or equal to 2.0. The solid contents, including packaging, are limited in weight to the gross weight of the as-tested liquids and bottles. The approved Hedgehog-II packaging configurations described in this report may be transported by air, and have been evaluated as meeting the applicable International Air Transport Association/International Civil Aviation Organization (IATA/ICAO) Dangerous Goods Regulations in addition to the DOT requirements.

  4. Real-time dynamic simulator for the Topaz II reactor power system

    SciTech Connect (OSTI)

    Kwok, K.S.

    1994-10-01T23:59:59.000Z

    A dynamic simulator of the TOPAZ II reactor system has been developed for the Nuclear Electric Propulsion Space Test Program. The simulator is a self-contained IBM-PC compatible based system that executes at a speed faster than real-time. The simulator combines first-principle modeling and empirical correlations in its algorithm to attain the modeling accuracy and computational through-put that are required for real-time execution. The overall execution time of the simulator for each time step is 15 ms when no data is written to the disk, and 18 ms when nine double precision data points are written to the disk once in every time step. The simulation program has been tested and it is able to handle a step decrease of $8 worth of reactivity. It also provides simulation of fuel, emitter, collector, stainless steel, and ZrH moderator failures. Presented in this paper are the models used in the calculations, a sample simulation session, and a discussion of the performance and limitations of the simulator. The simulator has been found to provide realistic real-time dynamic response of the TOPAZ II reactor system under both normal and causality conditions.

  5. Optical bistability and cooling of a mechanical oscillator induced by radiation pressure in a hybrid optomechanical system

    E-Print Network [OSTI]

    Sarma, Bijita

    2015-01-01T23:59:59.000Z

    We investigate theoretically the effect of optical feedback from a cavity containing an ultracold two level atomic ensemble, on the bistable behavior shown by mean intracavity optical field and the ground state cooling effect of the mechanical oscillator in an optomechanical cavity resonator. The optical bistability can be controlled by tuning the frequency and power of the single driving laser as well as by varying the atom-cavity coupling strength in the atomic cavity. Study of the cooling of the mechanical oscillator, in both good and bad cavity limits, reveals that the hybrid system is more efficient in cooling in comparison to a generic optomechanical setup, even at room temperature. In essence, our work emphasizes the impact of the coupling with the atomic cavity on the radiation pressure effects in the optomechanical cavity.

  6. ModelEnabled Control of Hybrid Systems S. McIlraith, G. Biswas, M. Fromherz 1 , J. Howe 2 , R. Fikes, D. Bobrow 1 ,

    E-Print Network [OSTI]

    Pratt, Vaughan

    1 Model­Enabled Control of Hybrid Systems S. McIlraith, G. Biswas, M. Fromherz 1 , J. Howe 2 , R proposes a new paradigm, model­enabled control, that uses declarative models augmented with automatic and analysis, and a computational infrastructure to support the autonomous model­enabled control of multiple

  7. Analysis of a hybrid UFAD and radiant hydronic slab HVAC system

    E-Print Network [OSTI]

    Raftery, Paul; Lee, Kwang Ho; Webster, Thomas; Bauman, Fred

    2011-01-01T23:59:59.000Z

    Air- Conditioning Engineers HVAC & R Research, vol. 50, Sep.and radiant hydronic slab HVAC system.   Paul RAFTERY a,* ,of a novel integrated HVAC system. This system combines an

  8. Hybrid vehicle-centric route guidance

    E-Print Network [OSTI]

    Farver, Jennifer M. (Jennifer Margaret), 1976-

    2005-01-01T23:59:59.000Z

    This thesis proposes a hybrid route guidance system in which predictive guidance is generated in a centralized layer and revised in a reactive, decentralized layer that resides on-board the vehicle. This hybrid approach ...

  9. Hybrid vehicle design using global optimisation Wenzhong Gao

    E-Print Network [OSTI]

    Mi, Chunting "Chris"

    systems, power system modelling and simulation, alternative power systems, renewable energy and electric electronics, hybrid electric vehicles, electric machines, and renewable energy systems. He). A hybrid powertrain is comprised of electric motors with power electronic converters, energy storage

  10. INDEX TO VIRGINIA CORN HYBRID AND MANAGEMENT TRIALS 1998 SECTION I. VIRGINIA CORN HYBRID TRIALS IN 1998.

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    INDEX TO VIRGINIA CORN HYBRID AND MANAGEMENT TRIALS 1998 SECTION I. VIRGINIA CORN HYBRID TRIALS IN 1998. Companies participating in the 1998 Corn Hybrid Trials 2 1998 Virginia Corn Hybird Plot, and 1998. 36 SECTION II. EVALUATION OF DOUBLECROP CORN UNDER IRRIGATION IN EASTERN VIRGINIA. Table 27

  11. Characteristics and control response of the TOPAZ II Reactor System Real-time Dynamic Simulator

    SciTech Connect (OSTI)

    Kwok, K.S.

    1993-11-12T23:59:59.000Z

    A dynamic simulator of the TOPAZ II reactor system has been developed for the Nuclear Electric Propulsion Space Test Program. The simulator combines first-principle modeling and empirical correlations in its algorithm to attain the modeling accuracy and computational through-put that are required for real-time execution. The overall execution time of the simulator for each time step is 15 ms when no data is written to the disk, and 18 ms when nine double precision data points are written to the disk once in every time step. The simulation program has been tested and it is able to handle a step decrease of $8 worth of reactivity. It also provides simulations of fuel, emitter, collector, stainless steel, and ZrH moderator failures. Presented in this paper are the models used in the calculations, a sample simulation session, and a discussion of the performance and limitations of the simulator. The simulator has been found to provide realistic real-time dynamic response of the TOPAZ II reactor system under both normal and casualty conditions.

  12. ENGINEERING DEVELOPMENT OF COAL-FIRED HIGH PERFORMANCE POWER SYSTEMS PHASE II AND III

    SciTech Connect (OSTI)

    NONE

    1998-09-30T23:59:59.000Z

    This report presents work carried out under contract DE-AC22-95PC95144 "Engineering Development of Coal-Fired High Performance Systems Phase II and III." The goals of the program are to develop a coal-fired high performance power generation system (HIPPS) that is capable of: à thermal efficiency (HHV) >47%; à NOx, SOx, and particulates <10% NSPS (New Source Performance Standard); à coal providing >65% of heat input; à all solid wastes benign; à cost of electricity <90% of present plants. Phase I, which began in 1992, focused on the analysis of various configurations of indirectly fired cycles and on technical assessments of alternative plant subsystems and components, including performance requirements, developmental status, design options, complexity and reliability, and capital and operating costs. Phase I also included preliminary R&D and the preparation of designs for HIPPS commercial plants approximately 300 MWe in size. This phase, Phase II, involves the development and testing of plant subsystems, refinement and updating of the HIPPS commercial plant design, and the site selection and engineering design of a HIPPS prototype plant. Work reported herein is from: à Task 2.2 HITAF Air Heaters; à Task 6 HIPPS Commercial Plant Design Update.

  13. Opportunities for Micropower and Fuel Cell/Gas Turbine Hybrid Systems in

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in ManyDepartment ofOil'sEnergy 9Industrial Applications - Volume II

  14. Analysis of a hybrid UFAD and radiant hydronic slab HVAC system

    E-Print Network [OSTI]

    Raftery, Paul; Lee, Kwang Ho; Webster, Thomas; Bauman, Fred

    2011-01-01T23:59:59.000Z

    cooling systems,” American Society of Heating, Refrigerating and Air- Conditioning Engineers HVAC & R Research,

  15. Spectrally selective beam splitters designed to decouple quantum and thermal solar energy conversion in hybrid concentrating systems: Final report, Phase 1 and 2

    SciTech Connect (OSTI)

    Osborn, D.E.

    1988-06-01T23:59:59.000Z

    The technical feasibility and flexibility of developing elements that separate concentrated solar irradiation into specific spectral regions matched to specific photoquantum processes have been shown. These elements, spectrally selective beam splitters or filters, are designed to decouple quantum and thermal solar energy conversion in hybrid concentrating systems. Both interference filters and liquid absorption filters were investigated for use as spectrally selective beam splitters. Spectral selectivity is investigated for a variety of quantum systems with various spectral windows utilizing interference and absorption filters designed. Detailed analysis of one typical quantum system is provided consisting of a model of the silicon cell photovoltaic/photothermal hybrid system using spectral selectivity. The performance benefits of this approach are shown. Interference filters show the greatest flexibility and ability to match specific spectral windows. Liquid absorption filters appear to be a lower cost option, when an appropriate spectrally selective solution that can be used as a heat transfer fluid is available. 18 refs., 88 figs., 9 tabs.

  16. Novel Hybrid Monte Carlo/Deterministic Technique for Shutdown Dose Rate Analyses of Fusion Energy Systems

    SciTech Connect (OSTI)

    Ibrahim, Ahmad M [ORNL] [ORNL; Peplow, Douglas E. [ORNL] [ORNL; Peterson, Joshua L [ORNL] [ORNL; Grove, Robert E [ORNL] [ORNL

    2013-01-01T23:59:59.000Z

    The rigorous 2-step (R2S) method uses three-dimensional Monte Carlo transport simulations to calculate the shutdown dose rate (SDDR) in fusion reactors. Accurate full-scale R2S calculations are impractical in fusion reactors because they require calculating space- and energy-dependent neutron fluxes everywhere inside the reactor. The use of global Monte Carlo variance reduction techniques was suggested for accelerating the neutron transport calculation of the R2S method. The prohibitive computational costs of these approaches, which increase with the problem size and amount of shielding materials, inhibit their use in the accurate full-scale neutronics analyses of fusion reactors. This paper describes a novel hybrid Monte Carlo/deterministic technique that uses the Consistent Adjoint Driven Importance Sampling (CADIS) methodology but focuses on multi-step shielding calculations. The Multi-Step CADIS (MS-CADIS) method speeds up the Monte Carlo neutron calculation of the R2S method using an importance function that represents the importance of the neutrons to the final SDDR. Using a simplified example, preliminarily results showed that the use of MS-CADIS enhanced the efficiency of the neutron Monte Carlo simulation of an SDDR calculation by a factor of 550 compared to standard global variance reduction techniques, and that the increase over analog Monte Carlo is higher than 10,000.

  17. UBC Social Ecological Economic Development Studies (SEEDS) Student Report The Sustainability of UBC Food System Collaborative Project II

    E-Print Network [OSTI]

    UBC Social Ecological Economic Development Studies (SEEDS) Student Report The Sustainability of UBC, indicators were developed to assess the sustainability of the food system. Furthermore, we developed of a project/report". #12;The Sustainability of UBC Food System Collaborative Project II Group Three

  18. UBC Social Ecological Economic Development Studies (SEEDS) Student Report The Sustainability Of The Ubc Food System: Collaborative Project II

    E-Print Network [OSTI]

    UBC Social Ecological Economic Development Studies (SEEDS) Student Report The Sustainability asked to develop a model to assess the sustainability of the UBC Food System. Specifically, we have to of a project/report". #12;1 THE SUSTAINABILITY OF THE UBC FOOD SYSTEM: COLLABORATIVE PROJECT II Agricultural

  19. Development of Design and Simulation Tool for Hybrid Geothermal Heat Pump System

    Broader source: Energy.gov [DOE]

    This project will expand Expand eQUEST, a building energy analysis software with latest implementation of DOE-2, for simulations of HGSHP systems and improve its existing simulation capabilities for ordinary GSHP systems.

  20. Renewable Energy Powered Membrane Technology. 1. Development and Characterization of a Photovoltaic Hybrid Membrane System 

    E-Print Network [OSTI]

    Schäfer, Andrea; Broeckmann, Andreas; Richards, Bryce

    2007-01-01T23:59:59.000Z

    the unavailability of power in many such situations, renewable energy is an obvious solution to power such systems. However, renewable energy is an intermittent power supply and with regards to the performance of intermittently operated desalination systems, only...

  1. Storage device sizing for a hybrid railway traction system by means of bicausal bond graphs

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    (a supercapacitor) included in this system is then discussed. Keywords: bond graph, bicausality In the paper, the example of a supercapacitor process consists of choosing the system structure dimensioning

  2. National Geoscience Data Repository System, Phase II. Final report, January 30, 1995--January 28, 1997

    SciTech Connect (OSTI)

    NONE

    1998-04-01T23:59:59.000Z

    The American Geological Institute (AGI) has completed Phase II of a project to establish a National Geoscience Data Repository System (NGDRS). The project`s primary objectives are to preserve geoscience data in jeopardy of being destroyed and to make that data available to those who have a need to use it in future investigations. These data are available for donation to the public as a result of the downsizing that has occurred in the major petroleum and mining companies in the United States for the past decade. In recent years, these companies have consolidated domestic operations, sold many of their domestic properties and relinquished many of their leases. The scientific data associated with those properties are no longer considered to be useful assets and are consequently in danger of being lost forever. The national repository project will make many of these data available to the geoscience community for the first time. To address this opportunity, AGI sought support from the Department of Energy (DOE) in 1994 to initiate the NGDRS Phase I feasibility study to determine the types and quantity of data that companies would be willing to donate. The petroleum and mining companies surveyed indicated that they were willing to donate approximately five million well logs, one hundred million miles of seismic reflection data, millions of linear feet of core and cuttings, and a variety of other types of scientific data. Based on the positive results of the Phase I study, AGI undertook Phase II of the program in 1995. Funded jointly by DOE and industry, Phase II encompasses the establishment of standards for indexing and cataloging of geoscience data and determination of the costs of transferring data from the private sector to public-sector data repositories. Pilot projects evaluated the feasibility of the project for transfer of different data types and creation of a Web-based metadata supercatalog and browser.

  3. A CLASSIFICATION SCHEME FOR THE COMMON PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS

    E-Print Network [OSTI]

    Holtz, Michael J.

    2011-01-01T23:59:59.000Z

    all zones equally. Remote heating systems can be designed toremote from the building envelope proper. South wall heating

  4. IWater Processing and Waste Management SystemsIntegrated System Health Management 2007 Phase II

    E-Print Network [OSTI]

    and other sources. It may serve as a backup processor for one or more existing water recovery systems unit drying prototype to for the recovery and recycle of water from concentrated waste water recovery system surfaces. The process is suitable for dewatering brine from the vapor compression distillation processor

  5. A simple mathematical description of an off-grid hybrid solarwind power generating system This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Blasone, Massimo

    A simple mathematical description of an off-grid hybrid solar­wind power generating system/763 Abstract We give a detailed description of the energy balance equation for a stand-alone hybrid solar­wind degree of availability of solar and wind power, renewable sources could in the future fulfil planetary

  6. An Adaptive Memory Interface Controller for Improving Bandwidth Utilization of Hybrid and Reconfigurable Systems

    SciTech Connect (OSTI)

    Castellana, Vito G.; Tumeo, Antonino; Ferrandi, Fabrizio

    2014-05-30T23:59:59.000Z

    Emerging applications such as data mining, bioinformatics, knowledge discovery, social network analysis are irregular. They use data structures based on pointers or linked lists, such as graphs, unbalanced trees or unstructures grids, which generates unpredictable memory accesses. These data structures usually are large, but difficult to partition. These applications mostly are memory bandwidth bounded and have high synchronization intensity. However, they also have large amounts of inherent dynamic parallelism, because they potentially perform a task for each one of the element they are exploring. Several efforts are looking at accelerating these applications on hybrid architectures, which integrate general purpose processors with reconfigurable devices. Some solutions, which demonstrated significant speedups, include custom-hand tuned accelerators or even full processor architectures on the reconfigurable logic. In this paper we present an approach for the automatic synthesis of accelerators from C, targeted at irregular applications. In contrast to typical High Level Synthesis paradigms, which construct a centralized Finite State Machine, our approach generates dynamically scheduled hardware components. While parallelism exploitation in typical HLS-generated accelerators is usually bound within a single execution flow, our solution allows concurrently running multiple execution flow, thus also exploiting the coarser grain task parallelism of irregular applications. Our approach supports multiple, multi-ported and distributed memories, and atomic memory operations. Its main objective is parallelizing as many memory operations as possible, independently from their execution time, to maximize the memory bandwidth utilization. This significantly differs from current HLS flows, which usually consider a single memory port and require precise scheduling of memory operations. A key innovation of our approach is the generation of a memory interface controller, which dynamically maps concurrent memory accesses to multiple ports. We present a case study on a typical irregular kernel, Graph Breadth First search (BFS), exploring different tradeoffs in terms of parallelism and number of memories.

  7. Worldwide wind/diesel hybrid power system study: Potential applications and technical issues

    SciTech Connect (OSTI)

    King, W.R.; Johnson, B.L. III (Science Applications International Corp., McLean, VA (USA))

    1991-04-01T23:59:59.000Z

    The world market potential for wind/diesel hybrid technology is a function of the need for electric power, the availability of sufficient wind resource to support wind/diesel power, and the existence of buyers with the financial means to invest in the technology. This study includes data related to each of these three factors. This study does not address market penetration, which would require analysis of application specific wind/diesel economics. Buyer purchase criteria, which are vital to assessing market penetration, are discussed only generally. Countries were screened for a country-specific market analysis based on indicators of need and wind resource. Both developed countries and less developed countries'' (LDCs) were screened for wind/diesel market potential. Based on the results of the screening, ten countries showing high market potential were selected for more extensive market analyses. These analyses provide country-specific market data to guide wind/diesel technology developers in making design decisions that will lead to a competitive product. Section 4 presents the country-specific data developed for these analyses, including more extensive wind resource characterization, application-specific market opportunities, business conditions, and energy market characterizations. An attempt was made to identify the potential buyers with ability to pay for wind/diesel technology required to meet the application-specific market opportunities identified for each country. Additionally, the country-specific data are extended to corollary opportunities in countries not covered by the study. Section 2 gives recommendations for wind/diesel research based on the findings of the study. 86 refs.

  8. Hybrid Fuel Cell Technology Overview

    SciTech Connect (OSTI)

    None available

    2001-05-31T23:59:59.000Z

    For the purpose of this STI product and unless otherwise stated, hybrid fuel cell systems are power generation systems in which a high temperature fuel cell is combined with another power generating technology. The resulting system exhibits a synergism in which the combination performs with an efficiency far greater than can be provided by either system alone. Hybrid fuel cell designs under development include fuel cell with gas turbine, fuel cell with reciprocating (piston) engine, and designs that combine different fuel cell technologies. Hybrid systems have been extensively analyzed and studied over the past five years by the Department of Energy (DOE), industry, and others. These efforts have revealed that this combination is capable of providing remarkably high efficiencies. This attribute, combined with an inherent low level of pollutant emission, suggests that hybrid systems are likely to serve as the next generation of advanced power generation systems.

  9. Essays On Hybrid Bundle Pricing 

    E-Print Network [OSTI]

    Meyer, Jeffrey Dean

    2011-10-21T23:59:59.000Z

    Increasingly, firms are offering hybrid bundles — products that combine both good(s) and service(s). Some hybrid bundles, such as TiVo that combines a DVR and recording management are more visible, while some, such as GE‘s Powerplant System...

  10. ART CCIM Phase II-A Off-Gas System Evaluation Test Plan

    SciTech Connect (OSTI)

    Nick Soelberg; Jay Roach

    2009-01-01T23:59:59.000Z

    This test plan defines testing to be performed using the Idaho National Laboratory (INL) engineering-scale cold crucible induction melter (CCIM) test system for Phase II-A of the Advanced Remediation Technologies (ART) CCIM Project. The multi-phase ART-CCIM Project is developing a conceptual design for replacing the joule-heated melter (JHM) used to treat high level waste (HLW) in the Defense Waste Processing Facility (DWPF) at the Savannah River Site (SRS) with a cold crucible induction melter. The INL CCIM test system includes all feed, melter off-gas control, and process control subsystems needed for fully integrated operation and testing. Testing will include operation of the melter system while feeding a non-radioactive slurry mixture prepared to simulate the same type of waste feed presently being processed in the DWPF. Process monitoring and sample collection and analysis will be used to characterize the off-gas composition and properties, and to show the fate of feed constituents, to provide data that shows how the CCIM retrofit conceptual design can operate with the existing DWPF off-gas control system.

  11. Control System Development for an Advanced-Technology Medium-Duty Hybrid Electric Truck

    E-Print Network [OSTI]

    Grizzle, Jessy W.

    Chan-Chiao Lin, Huei Peng and J. W. Grizzle University of Michigan Jason Liu and Matt Busdiecker Eaton Corporation Copyright © 2003 SAE International ABSTRACT The power management control system development management control system for the prototype truck produced by the Eaton Innovation Center

  12. Evaluation of 2010 Urea-SCR Technology for Hybrid Vehicles using...

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

    2010 Urea-SCR Technology for Hybrid Vehicles using PSAT System Simulations Evaluation of 2010 Urea-SCR Technology for Hybrid Vehicles using PSAT System Simulations Results of...

  13. Prerequisites: Control Systems I+II, Engine Class (IC Engines and Propulsion Systems, Introduction to

    E-Print Network [OSTI]

    Daraio, Chiara

    to Modeling and Control of Internal Combustion Engine Systems,...), Model Predictive Control, Matlab Iterative Learning Control for Internal Combustion Engines Modeling and Control Description: In classical. The objective of this work is to apply learning algorithms to highly dynamic internal combustion engines

  14. Prerequisites: Control Systems I+II, Engine Class (IC Engines and Propulsion Systems, Introduction to

    E-Print Network [OSTI]

    Daraio, Chiara

    to Modeling and Control of Internal Combustion Engine Systems,...), Matlab/Simulink experience Contact for a Novel Engine Concept Position Control for an Internal Combustion Engine (Simulation) Description an internal combustion engine piston follow a reference position trajectory with sufficient accuracy

  15. Prerequisites: Control Systems I+II, System Modeling, Engine Class (Introduction to Modeling and Control of

    E-Print Network [OSTI]

    Daraio, Chiara

    and Control of Internal Combustion Engine Systems, IC Engines, ...), Optimization Course, Matlab The gas-diesel engine is a natural gas engine, where the combustion is initiated by a small quantity on the investigation of the combustion process of the gas-diesel engine. A highly flexible engine test-bench with COC

  16. Prerequisites: Control Systems I+II, System Modeling, Engine Class (Introduction to Modeling and Control of

    E-Print Network [OSTI]

    Daraio, Chiara

    and Control The gas-diesel engine is a natural gas engine, where the combustion is initiated by a small is much higher than the ignition energy of a common spark plug. As a consequence, the natural gas and Control of Internal Combustion Engine Systems, IC Engines, ...), Matlab/Simulink experience Contact

  17. Evaluation of line focus solar central power systems. Volume II. Systems evaluation

    SciTech Connect (OSTI)

    Not Available

    1980-03-15T23:59:59.000Z

    An evaluation was completed to ascertain the applicability of line focus technologies to electrical power applications and to compare their performance and cost potential with point focus central receiver power systems. It was concluded that although the high temperature line focus (SRI) and fixed mirror line focus (GA) concepts duplicate the heat source characteristics and power conversion technology of the central receiver concepts these configurations do not offer a sufficient improvement in cost to warrant full scale development. The systems are, however, less complex than their point focus counterpart and should the central receiver system development falter they provide reasonable technology alternatives. The parabolic trough concept (BDM) was found to provide a low temperature technology alternative to the central receiver concept with promising performance and cost potential. Its continued development is recommended, with special emphasis on lower temperature (< 700/sup 0/F) applications. Finally, a variety of new promising line focus power system configurations were identified for a range of utility and industrial applications and recommendations were made on their implementation. This volume contains the detailed report. (WHK)

  18. Hybrid Mesons

    E-Print Network [OSTI]

    C. A. Meyer; E. S. Swanson

    2015-03-04T23:59:59.000Z

    A review of the theoretical and experimental status of hybrid hadrons is presented. The states $\\pi_1(1400)$, $\\pi_1(1600)$, and $\\pi_1(2015)$ are thoroughly reviewed, along with experimental results from GAMS, VES, Obelix, COMPASS, KEK, CLEO, Crystal Barrel, CLAS, and BNL. Theoretical lattice results on the gluelump spectrum, adiabatic potentials, heavy and light hybrids, and transition matrix elements are discussed. These are compared with bag, string, flux tube, and constituent gluon models. Strong and electromagnetic decay models are described and compared to lattice gauge theory results. We conclude that while good evidence for the existence of a light isovector exotic meson exists, its confirmation as a hybrid meson awaits discovery of its iso-partners. We also conclude that lattice gauge theory rules out a number of hybrid models and provides a reference to judge the success of others.

  19. The Design and Development of a Hybrid RF/Laser Radar System for Measuring Changes in

    E-Print Network [OSTI]

    Kansas, University of

    transmit power and higher PRF. RF pulse compression is used to improve system performance further. Receiver compression. Compared to laser radars like GLAS and MOLA, this sensor requires a lower peak transmit power Compression .......................................................... 14 2.6 Coherent Integration

  20. A methodology for optimal sizing of autonomous hybrid PV/wind system

    E-Print Network [OSTI]

    Boyer, Edmond

    mathematical models for characterizing PV module, wind generator and battery are proposed. The second step is obtained for a system comprising a 125 W photovoltaic modules, one wind generator (600 W) and storage

  1. Analysis of a hybrid UFAD and radiant hydronic slab HVAC system

    E-Print Network [OSTI]

    Raftery, Paul; Lee, Kwang Ho; Webster, Thomas; Bauman, Fred

    2011-01-01T23:59:59.000Z

    speed, and the cooling tower supply water temperature set-operates in ‘free-cooling’ mode to supply cool water to thealso include a cooling system that can supply cool water to

  2. Dual-temperature Kalina cycle for geothermal-solar hybrid power systems

    E-Print Network [OSTI]

    Boghossian, John G

    2011-01-01T23:59:59.000Z

    This thesis analyzes the thermodynamics of a power system coupling two renewable heat sources: low-temperature geothermal and a high-temperature solar. The process, referred to as a dual-temperature geothermal-solar Kalina ...

  3. THE WIDE-AREA ENERGY STORAGE AND MANAGEMENT SYSTEM PHASE II Final Report - Flywheel Field Tests

    SciTech Connect (OSTI)

    Lu, Ning; Makarov, Yuri V.; Weimar, Mark R.; Rudolph, Frank; Murthy, Shashikala; Arseneaux, Jim; Loutan, Clyde; Chowdhury, S.

    2010-08-31T23:59:59.000Z

    This research was conducted by Pacific Northwest National Laboratory (PNNL) operated for the U.S. department of Energy (DOE) by Battelle Memorial Institute for Bonneville Power Administration (BPA), California Institute for Energy and Environment (CIEE) and California Energy Commission (CEC). A wide-area energy management system (WAEMS) is a centralized control system that operates energy storage devices (ESDs) located in different places to provide energy and ancillary services that can be shared among balancing authorities (BAs). The goal of this research is to conduct flywheel field tests, investigate the technical characteristics and economics of combined hydro-flywheel regulation services that can be shared between Bonneville Power Administration (BPA) and California Independent System Operator (CAISO) controlled areas. This report is the second interim technical report for Phase II of the WAEMS project. This report presents: 1) the methodology of sharing regulation service between balancing authorities, 2) the algorithm to allocate the regulation signal between the flywheel and hydro power plant to minimize the wear-and-tear of the hydro power plants, 3) field results of the hydro-flywheel regulation service (conducted by the Beacon Power), and 4) the performance metrics and economic analysis of the combined hydro-flywheel regulation service.

  4. A hybrid approach for the modal analysis of continuous systems with localized nonlinear constraints.

    SciTech Connect (OSTI)

    Brake, Matthew Robert

    2010-10-01T23:59:59.000Z

    The analysis of continuous systems with nonlinearities in their domain have previously been limited to either numerical approaches, or analytical methods that are constrained in the parameter space, boundary conditions, or order of the system. The present analysis develops a robust method for studying continuous systems with arbitrary boundary conditions and nonlinearities using the assumption that the nonlinear constraint can be modeled with a piecewise-linear force-deflection constitutive relationship. Under this assumption, a superposition method is used to generate homogeneous boundary conditions, and modal analysis is used to find the displacement of the system in each state of the piecewise-linear nonlinearity. In order to map across each nonlinearity in the piecewise-linear force-deflection profile, a variational calculus approach is taken that minimizes the L2 energy norm between the previous and current states. To illustrate this method, a leaf spring coupled with a connector pin immersed in a viscous fluid is modeled as a beam with a piecewise-linear constraint. From the results of the convergence and parameter studies, a high correlation between the finite-time Lyapunov exponents and the contact time per period of the excitation is observed. The parameter studies also indicate that when the system's parameters are changed in order to reduce the magnitude of the velocity impact between the leaf spring and connector pin, the extent of the regions over which a chaotic response is observed increases.

  5. Investigation of Synergy Between Electrochemical Capacitors, Flywheels, and Batteries in Hybrid Energy Storage for PV Systems

    SciTech Connect (OSTI)

    Miller, John; Sibley, Lewis, B.; Wohlgemuth, John

    1999-06-01T23:59:59.000Z

    This report describes the results of a study that investigated the synergy between electrochemical capacitors (ECs) and flywheels, in combination with each other and with batteries, as energy storage subsystems in photovoltaic (PV) systems. EC and flywheel technologies are described and the potential advantages and disadvantages of each in PV energy storage subsystems are discussed. Seven applications for PV energy storage subsystems are described along with the potential market for each of these applications. A spreadsheet model, which used the net present value method, was used to analyze and compare the costs over time of various system configurations based on flywheel models. It appears that a synergistic relationship exists between ECS and flywheels. Further investigation is recommended to quantify the performance and economic tradeoffs of this synergy and its effect on overall system costs.

  6. Design and evaluation of a nuclear-electric hybrid power/propulsion system

    E-Print Network [OSTI]

    Keil, Ralph

    1989-01-01T23:59:59.000Z

    investigating and comparing various closed and open cycles. El ? Genk et al. ' have investiga, ted three different cycles: A potassium Rankine cycle, a. closed and an open Brayton cycle. These systems v'ere optimized for a power level of 160 MWe and compared... with each other. The optimized systems were also analyzed v;hen used for the generation of only 3. 3 MWe. However, since the above mentioned optimization is performed at a power level well above our design point, it can no longer be considered optimal...

  7. Laser Inertial Fusion-based Energy: Neutronic Design Aspects of a Hybrid Fusion-Fission Nuclear Energy System

    E-Print Network [OSTI]

    Kramer, Kevin James

    2010-01-01T23:59:59.000Z

    4.3.3.4 Chamber Radius and Fusion Neutron Flux . . . . .1.1.3.2 Fusion Energy . . . . . . . . .1.1.3.3 Fission-Fusion Hybrids . . . . 1.2 Scope and Purpose

  8. A Vehicle Systems Approach to Evaluate Plug-in Hybrid Battery Cold Start, Life and Cost Issues 

    E-Print Network [OSTI]

    Shidore, Neeraj Shripad

    2012-07-16T23:59:59.000Z

    The batteries used in plug-in hybrid electric vehicles (PHEVs) need to overcome significant technical challenges in order for PHEVs to become economically viable and have a large market penetration. The internship at Argonne National Laboratory (ANL...

  9. HYBRID SPEAKER-BASED SEGMENTATION SYSTEM USING MODEL-LEVEL Hyoung-Gook Kim, Daniel Ertelt, Thomas Sikora

    E-Print Network [OSTI]

    Wichmann, Felix

    -based and model-based segmentation. Figure 1 depicts the algorithm flow chart. The hybrid segmentation can speaker models. First, silence segments in the input audio recording are detected by the simple energy

  10. A Vehicle Systems Approach to Evaluate Plug-in Hybrid Battery Cold Start, Life and Cost Issues

    E-Print Network [OSTI]

    Shidore, Neeraj Shripad

    2012-07-16T23:59:59.000Z

    The batteries used in plug-in hybrid electric vehicles (PHEVs) need to overcome significant technical challenges in order for PHEVs to become economically viable and have a large market penetration. The internship at Argonne National Laboratory (ANL...

  11. To appear in International Journal of Hybrid Systems c 2004 Nonpareil Publishers Book review for

    E-Print Network [OSTI]

    Hespanha, João Pedro

    , aircraft dynamics, groundwater systems, and reliability in offshore oil and gas platforms. Chapters 10, 12, and 19 explore the use of numerical techniques to solve optimization #12;2 J.P. Hespanha problems. One of the different chapters. Part I: Issues in Stability Analysis A. Fettweis, "Chapter 1: Wave-digital concepts

  12. Testing of a hybrid membrane system for groundwater desalination in an Australian national park 

    E-Print Network [OSTI]

    Schäfer, Andrea; Richards, Bryce S.

    2005-01-01T23:59:59.000Z

    in reducing high feedwater turbidity of up to 370 NTU. For the system, designed for a production of about 1000 L/d for remote communities, the specific energy consumption (SEC) was below 5 W.h/L when operated at a pressure above 7 bar. Retention of multivalent...

  13. Optimization of Multiagent Systems with Increasing State Dimensions: Hybrid LQ Approach

    E-Print Network [OSTI]

    Egerstedt, Magnus

    been an increasing interest in practically relevant interconnected systems that can be formalized-740, Av. Instituto Politecnico Nacional No. 2508, C.P. 07360, Mexico D.F., Mexico, rgalvan of some groups (networks) of interconnected intelligent machines. The dimension of a robots

  14. Maximizing Return on Investment of a Grid-Connected Hybrid Electrical Energy Storage System

    E-Print Network [OSTI]

    Pedram, Massoud

    -of-day pricing policy [3] with much higher energy price during peak hours for residential users, incentivizing energy when the electricity price is low and supply energy for use when the electricity price is high [6 total energy cost saving compared to its capital cost (i.e., the purchase price of the system plus its

  15. Optimal Design of Hybrid Energy System with PV/ Wind Turbine/ Storage: A Case Study

    E-Print Network [OSTI]

    Low, Steven H.

    increasing attention as an alternative to conventional system, with diesel generation only as emergency is currently generated by diesel, which is transported by ship from the mainland. The peak demand in 2008 was around 5.3 MW. In this paper, we investigate the feasibility of replacing the diesel generation

  16. Implementation Hybrid Trace Verifier (HTV) implements our

    E-Print Network [OSTI]

    Liberzon, Daniel

    to larger problems. References [1] S. Mitra. A Verification Framework for Hybrid Systems. PhD thesis. [3] A. Fehnker and F. Ivaneie. Benchmarks for hybrid systems verification. HSCC, 2993, 2004. A satellite maneuver system. 3. A version of room heating benchmark. 4. An engine control system

  17. Final Report for the MANNRRSS II Program Management of Nevada's Natural Resources with Remote Sensing Systems, Beatty, NV

    SciTech Connect (OSTI)

    Lester Miller; Brian Horowitz; Chris Kratt; Tim Minor; Stephen F. Zitzer; James. V. Taranik; Zan L. Aslett; Todd O. Morken

    2009-06-04T23:59:59.000Z

    This document provides the Final Report on the Management of Nevada’s Natural Resources with Remote Sensing Systems (MANNRRSS) II program. This is a U.S. Department of Energy (DOE)-funded project tasked with utilizing hyperspectral and ancillary electro-optical instrumentation data to create an environmental characterization of an area directly adjacent to the Nevada Test Site (NTS).

  18. Hybrid expert system - neural network - Fuzzy Logic methodology for transient identification

    SciTech Connect (OSTI)

    Ikonomopoulos, A.; Tsoukalas, L.H. [Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering; Uhrig, R.E. [Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering]|[Oak Ridge National Lab., TN (United States)

    1991-12-31T23:59:59.000Z

    A methodology is presented that demonstrates the potential of pretrained artificial neural networks (ANN`s) as generators of membership functions for the purpose of transient identification in Nuclear Power Plants (NPP). In order to provide timely concise and task-specific information about the many aspects of the transient and to determine the state of the system based on the interpretation of potentially noisy data, a model-referenced approach is utilized, where pretrained ANNs provide the model. Membership functions -- that condense information about a transient in a form convenient for a rule-based identification system -- are produced through ANN`S. The results demonstrate the extremely good noise-tolerance of ANN`s and suggest a new method for transient identification within the framework of Fuzzy Logic.

  19. Hybrid expert system - neural network - Fuzzy Logic methodology for transient identification

    SciTech Connect (OSTI)

    Ikonomopoulos, A.; Tsoukalas, L.H. (Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering); Uhrig, R.E. (Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering Oak Ridge National Lab., TN (United States))

    1991-01-01T23:59:59.000Z

    A methodology is presented that demonstrates the potential of pretrained artificial neural networks (ANN's) as generators of membership functions for the purpose of transient identification in Nuclear Power Plants (NPP). In order to provide timely concise and task-specific information about the many aspects of the transient and to determine the state of the system based on the interpretation of potentially noisy data, a model-referenced approach is utilized, where pretrained ANNs provide the model. Membership functions -- that condense information about a transient in a form convenient for a rule-based identification system -- are produced through ANN'S. The results demonstrate the extremely good noise-tolerance of ANN's and suggest a new method for transient identification within the framework of Fuzzy Logic.

  20. EVALUATION OF FLAT-PLATE PHOTOVOLTAIC THERMAL HYBRID SYSTEMS FOR SOLAR ENERGY UTILIZATION.

    SciTech Connect (OSTI)

    ANDREWS,J.W.

    1981-06-01T23:59:59.000Z

    The technical and economic attractiveness of combined photovoltaic/thermal (PV/T) solar energy collectors was evaluated. The study was limited to flat-plate collectors since concentrating photovoltaic collectors require active cooling and thus are inherently PV/T collectors, the only decision being whether to use the thermal energy or to dump it. it was also specified at the outset that reduction in required roof area was not to be used as an argument for combining the collection of thermal and electrical energy into one module. Three tests of economic viability were identified, all of which PV/T must pass if it is to be considered a promising alternative: PV/T must prove to be competitive with photovoltaic-only, thermal-only, and side-by-side photovoltaic-plus-thermal collectors and systems. These three tests were applied to systems using low-temperature (unglazed) collectors and to systems using medium-temperature (glazed) collectors in Los Angeles, New York, and Tampa. For photovoltaics, the 1986 DOE cost goals were assumed to have been realized, and for thermal energy collection two technologies were considered: a current technology based on metal and glass, and a future technology based on thin-film plastics. The study showed that for medium-temperature applications PV/T is not an attractive option in any of the locations studied. For low-temperature applications, PV/T appears to be marginally attractive.