| 摘要 |
A fuel cell system includes a controller that estimates or detects an air replacement state of a fuel electrode and a hydrogen circulation path while the operation of the fuel cell system is stopped. Upon starting the fuel cell system, the controller changes the order in which the operation of a hydrogen circulation pump is started and a hydrogen pressure regulator is opened to start the supply of hydrogen gas on the basis of the estimated or detected air replacement state, thereby preventing deterioration caused by uneven distribution of air and hydrogen in the fuel electrode.
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