FUEL CELL SYSTEM
First Claim
1. A fuel cell system comprising:
- a fuel cell which generates electric power by a supplied reactant gas;
a gas adjusting device which adjusts a state of the reactant gas supplied to the fuel cell; and
a controller which controls an output current of the fuel cell by controlling the gas adjusting device to change a drive operating point of the fuel cell,wherein the controller sets a restriction on at least one of a current change amount and a voltage change amount per unit time when changing a drive operating point of the fuel cell in a range of low-efficiency power generation in which power loss is larger than that in normal power generation.
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Accused Products
Abstract
An object of the present invention is to provide a fuel cell system suited for changing a drive operating point of a fuel cell at the time of low-efficiency power generation. The fuel cell system in accordance with the present invention includes a fuel cell which generates electric power by supplied reactant gases, an air compressor which adjusts the flow rate of a reactant gas supplied to the fuel cell, and a controller which controls an output current of the fuel cell by controlling the air compressor to change a drive operating point of the fuel cell. The controller sets a restriction on at least one of a current change amount and a voltage change amount per unit time when changing the drive operating point of the fuel cell in a range of low-efficiency power generation in which a power loss is larger than that in normal power generation.
11 Citations
7 Claims
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1. A fuel cell system comprising:
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a fuel cell which generates electric power by a supplied reactant gas; a gas adjusting device which adjusts a state of the reactant gas supplied to the fuel cell; and a controller which controls an output current of the fuel cell by controlling the gas adjusting device to change a drive operating point of the fuel cell, wherein the controller sets a restriction on at least one of a current change amount and a voltage change amount per unit time when changing a drive operating point of the fuel cell in a range of low-efficiency power generation in which power loss is larger than that in normal power generation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification