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AU2001271241A1 - Uninterruptible power supplies employing fuel cells - Google Patents

Uninterruptible power supplies employing fuel cells

Info

Publication number
AU2001271241A1
AU2001271241A1 AU2001271241A AU7124101A AU2001271241A1 AU 2001271241 A1 AU2001271241 A1 AU 2001271241A1 AU 2001271241 A AU2001271241 A AU 2001271241A AU 7124101 A AU7124101 A AU 7124101A AU 2001271241 A1 AU2001271241 A1 AU 2001271241A1
Authority
AU
Australia
Prior art keywords
power supplies
fuel cells
uninterruptible power
employing fuel
supplies employing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU2001271241A
Inventor
Paul Humphreys
Thanh P Le
Frank Liu
Thomas H. Sloane
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alpha Technologies Inc
Original Assignee
Alpha Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alpha Technologies Inc filed Critical Alpha Technologies Inc
Publication of AU2001271241A1 publication Critical patent/AU2001271241A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04955—Shut-off or shut-down of fuel cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04544—Voltage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04544—Voltage
    • H01M8/04559—Voltage of fuel cell stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04574—Current
    • H01M8/04589—Current of fuel cell stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04746—Pressure; Flow
    • H01M8/04753—Pressure; Flow of fuel cell reactants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04746—Pressure; Flow
    • H01M8/04783—Pressure differences, e.g. between anode and cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04858—Electric variables
    • H01M8/04895—Current
    • H01M8/04917—Current of auxiliary devices, e.g. batteries, capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04858—Electric variables
    • H01M8/04925—Power, energy, capacity or load
    • H01M8/0494—Power, energy, capacity or load of fuel cell stacks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/30—The power source being a fuel cell
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/067—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems using multi-primary transformers, e.g. transformer having one primary for each AC energy source and a secondary for the loads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/10—Applications of fuel cells in buildings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Landscapes

  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrochemistry (AREA)
  • Power Engineering (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Fuel Cell (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Stand-By Power Supply Arrangements (AREA)
AU2001271241A 2000-03-20 2001-03-20 Uninterruptible power supplies employing fuel cells Abandoned AU2001271241A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US19060200P 2000-03-20 2000-03-20
US60190602 2000-03-20
US19181600P 2000-03-24 2000-03-24
US60191816 2000-03-24
PCT/US2001/008854 WO2001071885A1 (en) 2000-03-20 2001-03-20 Uninterruptible power supplies employing fuel cells

Publications (1)

Publication Number Publication Date
AU2001271241A1 true AU2001271241A1 (en) 2001-10-03

Family

ID=26886245

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001271241A Abandoned AU2001271241A1 (en) 2000-03-20 2001-03-20 Uninterruptible power supplies employing fuel cells

Country Status (5)

Country Link
US (1) US6602627B2 (en)
EP (1) EP1284041A4 (en)
AU (1) AU2001271241A1 (en)
CA (1) CA2403888C (en)
WO (1) WO2001071885A1 (en)

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030026782A1 (en) * 1995-02-07 2003-02-06 Arthur M. Krieg Immunomodulatory oligonucleotides
US7356498B2 (en) * 1999-12-30 2008-04-08 Chicago Board Options Exchange, Incorporated Automated trading exchange system having integrated quote risk monitoring and integrated quote modification services
US6465910B2 (en) 2001-02-13 2002-10-15 Utc Fuel Cells, Llc System for providing assured power to a critical load
US7061139B2 (en) * 2001-02-13 2006-06-13 Utc Fuel Cells, Llc System for providing assured power to a critical load
US6757590B2 (en) * 2001-03-15 2004-06-29 Utc Fuel Cells, Llc Control of multiple fuel cell power plants at a site to provide a distributed resource in a utility grid
FR2823442B1 (en) * 2001-04-13 2004-11-12 France Telecom PROGRAMMABLE PERFUME DELIVERY SYSTEM AND METHOD FOR IMPLEMENTING SUCH A SYSTEM
US6933626B2 (en) * 2001-04-24 2005-08-23 Alphatec Ltd. Ferroelectric transformer-free uninterruptible power supply (UPS) systems and methods for communications signal distribution systems
US7060379B2 (en) 2001-10-12 2006-06-13 Proton Energy Systems, Inc. Method and system for controlling and recovering short duration bridge power to maximize backup power
US6841275B2 (en) 2001-12-14 2005-01-11 Ballard Power Systems Inc. Method and apparatus for controlling voltage from a fuel cell system
US7144646B2 (en) 2001-12-14 2006-12-05 Ballard Power Systems Inc. Method and apparatus for multiple mode control of voltage from a fuel cell system
US20030135773A1 (en) * 2002-01-15 2003-07-17 Song Zhang Remote sensing of power supply states
JP2005526363A (en) * 2002-05-16 2005-09-02 バラード パワー システムズ インコーポレイティド Power facility with an array of adjustable fuel cell systems
FI118553B (en) * 2002-06-28 2007-12-14 Enfucell Oy Apparatus and method for producing electric power and power source
JP3825020B2 (en) * 2002-08-01 2006-09-20 株式会社アイ・ヒッツ研究所 Distributed power supply system
EP1540758A1 (en) 2002-09-13 2005-06-15 Proton Energy Systems, Inc. Method and system for balanced control of backup power
JP3899518B2 (en) * 2002-09-30 2007-03-28 カシオ計算機株式会社 FUEL CELL SYSTEM, ITS DRIVE CONTROL METHOD, AND ELECTRONIC DEVICE HAVING POWER SUPPLY SYSTEM
US20040081868A1 (en) * 2002-10-23 2004-04-29 Edlund David J. Distributed fuel cell network
JP3720024B2 (en) * 2003-01-10 2005-11-24 株式会社東芝 Electronic device system and operation control method
US7632583B2 (en) 2003-05-06 2009-12-15 Ballard Power Systems Inc. Apparatus for improving the performance of a fuel cell electric power system
US7419734B2 (en) 2003-05-16 2008-09-02 Ballard Power Systems, Inc. Method and apparatus for fuel cell systems
US6838923B2 (en) 2003-05-16 2005-01-04 Ballard Power Systems Inc. Power supply and ultracapacitor based battery simulator
JP4066901B2 (en) * 2003-07-03 2008-03-26 ソニー株式会社 Power adapter and power supply system
US20050266394A1 (en) * 2003-12-24 2005-12-01 Massachusette Institute Of Technology Magnetophoretic cell clarification
US7307360B2 (en) * 2004-01-30 2007-12-11 Arizona Board Of Regents Uninterruptible power supplies
US20050200205A1 (en) * 2004-01-30 2005-09-15 Winn David W. On-site power generation system with redundant uninterruptible power supply
GB0408641D0 (en) * 2004-04-16 2004-05-19 Energy Solutions Ltd An electrical power supply system
US7521138B2 (en) 2004-05-07 2009-04-21 Ballard Power Systems Inc. Apparatus and method for hybrid power module systems
US7791316B2 (en) * 2004-07-22 2010-09-07 Pine Valley Investments, Inc. Battery with isolated charging circuit for LMR portable radio applications
WO2006076259A2 (en) * 2005-01-10 2006-07-20 Nicholas Pasquale Distributed energy storage for reducing power demand
FR2880993A1 (en) * 2005-01-20 2006-07-21 Renault Sas ELECTRICITY PRODUCTION FACILITY COMPRISING A FUEL CELL WHOSE ANODE IS SUPPLIED SUCCESSIVELY BY TWO SOURCES OF FUEL
US7274975B2 (en) 2005-06-06 2007-09-25 Gridpoint, Inc. Optimized energy management system
US20070020491A1 (en) * 2005-07-21 2007-01-25 Michael Ogburn Stoichiometric control methodology for fuel cell systems
US20070042233A1 (en) * 2005-08-19 2007-02-22 Lyman Scott W Systems and methods for initiating auxiliary fuel cell system operation
US7887958B2 (en) 2006-05-15 2011-02-15 Idatech, Llc Hydrogen-producing fuel cell systems with load-responsive feedstock delivery systems
US8103389B2 (en) 2006-05-18 2012-01-24 Gridpoint, Inc. Modular energy control system
US20080157596A1 (en) * 2006-12-29 2008-07-03 Ming-Hsiang Yeh Power distribution device of power storage apparatus
US8704492B2 (en) * 2007-02-20 2014-04-22 Microsoft Corporation Automatic power switching in game peripheral
US9177323B2 (en) 2007-08-28 2015-11-03 Causam Energy, Inc. Systems and methods for determining and utilizing customer energy profiles for load control for individual structures, devices, and aggregation of same
US10295969B2 (en) 2007-08-28 2019-05-21 Causam Energy, Inc. System and method for generating and providing dispatchable operating reserve energy capacity through use of active load management
US8890505B2 (en) 2007-08-28 2014-11-18 Causam Energy, Inc. System and method for estimating and providing dispatchable operating reserve energy capacity through use of active load management
US12438368B2 (en) 2007-08-28 2025-10-07 Causam Enterprises, Inc. System and method for estimating and providing dispatchable operating reserve energy capacity through use of active load management
US8805552B2 (en) 2007-08-28 2014-08-12 Causam Energy, Inc. Method and apparatus for actively managing consumption of electric power over an electric power grid
US8806239B2 (en) 2007-08-28 2014-08-12 Causam Energy, Inc. System, method, and apparatus for actively managing consumption of electric power supplied by one or more electric power grid operators
US9130402B2 (en) 2007-08-28 2015-09-08 Causam Energy, Inc. System and method for generating and providing dispatchable operating reserve energy capacity through use of active load management
US20090111594A1 (en) * 2007-10-29 2009-04-30 Spence Charles H Billiards practice device
US8349174B2 (en) 2008-07-23 2013-01-08 Baxter International Inc. Portable power dialysis machine
FR2944924A1 (en) * 2009-04-23 2010-10-29 Francecol Technology S A R L ELECTRIC POWER MANAGEMENT SYSTEM BY MODULAR ELECTRONIC VARIATOR
EP2425515A2 (en) * 2009-05-01 2012-03-07 Alpha Technologies Inc. Solar power systems optimized for use in cold weather conditions
KR101036276B1 (en) 2009-07-06 2011-05-23 서울대학교산학협력단 Apparatus and method for mixed supply of multiple power sources
US8575779B2 (en) 2010-02-18 2013-11-05 Alpha Technologies Inc. Ferroresonant transformer for use in uninterruptible power supplies
US8634216B2 (en) 2010-07-08 2014-01-21 Solarbridge Technologies, Inc. Communication within a power inverter using transformer voltage frequency
WO2012054406A1 (en) 2010-10-18 2012-04-26 Alpha Technologies, Inc. Uninterruptible power supply systems and methods for communications systems
US9774198B2 (en) * 2010-11-08 2017-09-26 Brandon Culver Wind and solar powered heat trace with homeostatic control
CA2825481C (en) 2011-01-22 2019-06-25 Alpha Technologies Inc. Charge equalization systems and methods
US9030045B2 (en) 2011-01-23 2015-05-12 Alpha Technologies Inc. Switching systems and methods for use in uninterruptible power supplies
CA2825006C (en) 2011-01-23 2019-07-02 James Joseph Heidenreich Uninterruptible power supplies for use in a distributed network
US9037443B1 (en) 2011-10-16 2015-05-19 Alpha Technologies Inc. Systems and methods for solar power equipment
FR2985979B1 (en) 2012-01-25 2014-02-21 Dassault Aviat ELECTRIC EMERGENCY GENERATION ASSEMBLY FOR AN AIRCRAFT, AIRCRAFT AND ASSOCIATED METHOD
US9234916B2 (en) 2012-05-11 2016-01-12 Alpha Technologies Inc. Status monitoring cables for generators
EP2759689B8 (en) 2013-01-28 2016-09-21 General Electric Technology GmbH Emergency power supply system comprising a hydrogen fueled fuel cell
US10074981B2 (en) 2015-09-13 2018-09-11 Alpha Technologies Inc. Power control systems and methods
US10381867B1 (en) 2015-10-16 2019-08-13 Alpha Technologeis Services, Inc. Ferroresonant transformer systems and methods with selectable input and output voltages for use in uninterruptible power supplies
US10635122B2 (en) 2017-07-14 2020-04-28 Alpha Technologies Services, Inc. Voltage regulated AC power supply systems and methods
CN112134280A (en) * 2020-09-29 2020-12-25 武汉氢阳能源有限公司 Intelligent power grid compensation configuration system based on LOHC
US11955835B2 (en) * 2021-10-13 2024-04-09 Abb Schweiz Ag Method and control to integrate fuel cells in datacenters with ring-bus architecture
TWI897194B (en) * 2024-01-12 2025-09-11 廣達電腦股份有限公司 Power supply device

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823358A (en) 1973-06-18 1974-07-09 United Aircraft Corp Battery peaking unit for fuel cell power plants
US4251736A (en) 1979-07-23 1981-02-17 United Technologies Corporation Method for controlling power flow between an electrochemical cell and a power grid
US4472641A (en) 1983-01-28 1984-09-18 Westinghouse Electric Corp. Power supply apparatus
US4775800A (en) 1983-12-30 1988-10-04 Westinghouse Elctric Corp. Power-supply apparatus
JPS6217958A (en) 1985-07-16 1987-01-26 Sanyo Electric Co Ltd Control device for fuel cell power generation system
US4700122A (en) 1985-10-28 1987-10-13 The United States Of America As Represented By The Secretary Of The Air Force Power supply filtering with rechargeable battery element
JPH0746898B2 (en) 1987-05-28 1995-05-17 株式会社東芝 Power converter
US4988283A (en) * 1988-01-14 1991-01-29 Fuji Electric Co., Ltd. Fuel cell power generating apparatus and method for controlling the apparatus
US5154986A (en) * 1991-03-22 1992-10-13 Yamaha Hatsudoki Kabushiki Kaisha Shut-off device for fuel cell system
JP2947372B2 (en) * 1991-04-25 1999-09-13 株式会社関電工 Multifunctional power conversion system
US5739595A (en) 1992-10-28 1998-04-14 Alpha Technologies, Inc. Apparatus and methods for generating an AC power signal for cable tv distribution systems
US5410720A (en) 1992-10-28 1995-04-25 Alpha Technologies Apparatus and methods for generating an AC power signal for cable TV distribution systems
US5642002A (en) 1993-10-29 1997-06-24 Alpha Technologies Apparatus and methods for generating uninterruptible AC power signals
JP3453954B2 (en) * 1994-11-02 2003-10-06 トヨタ自動車株式会社 Carbon monoxide detector, organic compound detector and lower alcohol detector
CA2168520C (en) 1995-02-22 2003-04-08 Fereydoun Mekanik Inverter/charger circuit for uninterruptible power supplies
JP3322060B2 (en) 1995-03-23 2002-09-09 株式会社日立製作所 Power plant and power plant control device
DE19538381C2 (en) * 1995-10-14 1999-07-15 Aeg Energietechnik Gmbh Arrangement for the uninterruptible power supply of electrical consumers
JP4000607B2 (en) * 1996-09-06 2007-10-31 トヨタ自動車株式会社 Fuel cell power generation apparatus and method
US6028414A (en) 1997-01-29 2000-02-22 H Power Enterprises Of Canada Inc. Fuel cell stand-by energy supply system
US5880536A (en) 1997-05-14 1999-03-09 Io Limited Partnership, Llp Customer side power management system including auxiliary fuel cell for reducing potential peak load upon utilities and providing electric power for auxiliary equipment
US5892431A (en) 1997-05-20 1999-04-06 Alpha Technologies, Inc. Power multiplexer for broadband communications systems
AU8057198A (en) 1997-06-03 1998-12-21 Alpha Technologies, Inc. Status monitoring system for communications systems
WO1999008358A1 (en) 1997-08-08 1999-02-18 Alpha Technologies, Inc. Electrical generator employing rotary engine
US5994793A (en) * 1998-05-11 1999-11-30 Multipower, Inc. Uninterruptible power supply with plurality of inverters
CA2332840A1 (en) * 1998-05-19 1999-11-25 Sure Power Corporation Power system
US6198178B1 (en) * 1999-12-21 2001-03-06 International Power Systems, Inc. Step wave power converter
JP3444234B2 (en) * 1999-05-14 2003-09-08 株式会社ニプロン Uninterruptible redundant power supply
US6100665A (en) * 1999-05-25 2000-08-08 Alderman; Robert J. Electrical power system with relatively-low voltage input and method
US6465910B2 (en) * 2001-02-13 2002-10-15 Utc Fuel Cells, Llc System for providing assured power to a critical load

Also Published As

Publication number Publication date
US6602627B2 (en) 2003-08-05
WO2001071885A1 (en) 2001-09-27
US20020006536A1 (en) 2002-01-17
EP1284041A1 (en) 2003-02-19
EP1284041A4 (en) 2004-12-29
CA2403888C (en) 2007-05-29
CA2403888A1 (en) 2001-09-27

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