| 摘要 |
A power supply unit operation is switched depending on a load requirement. Namely, when the load requirement is smaller than a predetermined value, operation of a fuel cell system is stopped and electric power is obtained from a secondary battery during an intermittent operation mode. Alternatively, when the load requirement is equal to or larger than the predetermined value, the electric power is obtained from a fuel cell during a steady operation mode. When the electric power is generated by the fuel cell in the steady operation mode, an amount of fuel supplied to the fuel cell is detected, and an operation point of the fuel cell is set in consideration of the fuel amount. However, when the operation mode is switched from the intermittent operation mode to the steady operation mode, and the fuel cell system is activated, the operation point of the fuel cell is set depending on the load requirement without considering the fuel amount until a predetermined time elapses after the activation.
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