[특허]Method of controlling operation of fuel cell power supply

Method of controlling operation of fuel cell power supply 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01M-008/04
출원번호	US-0886607 (1992-05-21)
우선권정보	JP-0261352 (1989-10-06)
발명자 / 주소	Harashima Kouichi (Kawasaki JPX)
출원인 / 주소	Fuji Electric Co., Ltd. (Kawasaki JPX 03)
인용정보	피인용 횟수 : 36 인용 특허 : 0

초록 ▼

A fuel cell power supply in which the flow rates of reactant gases are set at flow rates required for a steady state operation plus predetermined extra amounts when an output power increase command is issued. This increase in the flow rates of the reactant gases reduces the consumption ratios of the hydrogen and oxygen to values different from those employed in the steady state operation. This makes it possible to compensate an output voltage drop due to a low temperature of the fuel cell during some time period after the command is issued, thus preventing an overload of the fuel cell.

대표청구항 ▼

A method of controlling the operation of a fuel cell power supply having a fuel cell, a reformed gas supply system for supplying the fuel cell with reformed gas at a flow rate Q, an air system for supplying the fuel cell with reactant air at a flow rate Q′, a power inverting system for inverting the output of the fuel cell and supplying the inverted output power to an external load, and a control system for controlling these systems in response to a command externally applied to increase or decrease the output power of said fuel cell, said method comprising the steps of: calculating a reference current and a reference voltage in accordance with a reference power designated by said command to increase the output power on the basis of I-V characteristic curves of said fuel cell store in said control system; calculating a first reference flow rate Q2 of said reformed gas and a first reference flow rate Q2′of said reactant air to be supplied to said fuel cell in accordance with said reference current; adding to said first reference flow rates Q2 and Q2′a predetermined amount q of said reformed gas and a predetermined amount g′of said reactant air, respectively, to obtain a second reference flow rate Q3 of said reformed gas and a second reference flow rate Q3′of said reactant air to be supplied to said fuel cell; increasing said flow rates Q and Q′of said reformed gas and said reactant air by controlling said reformed gas supply system and said air system in accordance with said second reference flow rates Q3 and Q3′; detecting the flow rates Q and Q′of said reformed gas and said reactant air respectively to find a first timing when said detected flow rates reach said second reference flow rates Q3 and Q3′respectively; detecting an output current, an output voltage and a temperature of said fuel cell; controlling said fuel cell, said reformed gas supply system, said air system, and said power inverting system in accordance with said second reference flow rates Q3 and Q3′and said reference power provided by said command from said first timing to a second timing when the temperature of said fuel cell reaches a predetermined steady state operation temperature corresponding to said reference current; and controlling said fuel cell, said reformed gas supply system, said air system, and said power inverting system in accordance with said first reference flow rates Q2 and Q2′, said reference current, and the output current of said fuel cell after said second timing.

이 특허를 인용한 특허 (36)

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Kolodziej,Jason R; Wheat,John S, H-infinity control with integrator compensation for anode pressure control in a fuel cell stack.
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Clawson, Lawrence G.; Dorson, Matthew H.; Mitchell, William L.; Nowicki, Brian J.; Thijssen, Johannes; Davis, Robert; Papile, Christopher; Rumsey, Jennifer W.; Longo, Nathan; Cross, III, James C.; Ri, Integrated hydrocarbon reforming system and controls.
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Bentley,Jeffrey M.; Clawson,Lawrence G.; Mitchell,William L.; Dorson,Matthew H., Integrated reformer and shift reactor.
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Stuhler Walter,DEX ; Stenger Herbert,DEX ; Keim Martin,DEX, Method for operating a PEM fuel cell plant and PEM fuel cell plant.
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Pratt,Steven Duane; Muthuswamy,Sivakumar; Kelley,Ronald James; Pennisi,Robert W., Method of operating a fuel cell power source.
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Kolodziej, Jason R., Nonlinear thermal control of a PEM fuel cell stack.
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Glenn W. Scheffler ; Paul R. Margiott ; Zakiul Kabir, Predictive control arrangement for load-following fuel cell-powered applications.
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Harness,John R.; Towler,Gavin P.; Vanden Bussche,Kurt M.; Senetar,John J.; Sioui,Daniel R., Process, control system and apparatus for the distribution of air in a fuel cell/fuel processor system.
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Robert A. Lacy, Regulating a fuel cell powered heating system.
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Jones, Daniel O.; Parks, John; Skidmore, Dustan, Technique and apparatus to control the transient response of a fuel cell system.
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Czajkowski, Kathleen A.; Rebain, Stephen R., Variable fuel cell power system for generating electrical power.
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Kempfer, Stephen Thomas, Vehicles containing and methods for using a pre-heater to reduce emissions, and for warming fuel cells at low ambient temperatures.
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