| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell system capable of suppressing power loss due to a diode in a reverse connection preventing circuit including the diode.SOLUTION: A fuel cell system comprises: a power supply line 61 for connecting a fuel cell 10 and a power conditioner 20; a reverse connection preventing circuit 30 provided in the power supply line 61 and including a diode 32; a first switch unit 41 which switches a supply state in which DC current is supplied from the fuel cell 10 to the power conditioner 20 or a non-supply state in which the DC current is not supplied; a second switch unit 42 which switches the reverse connection preventing circuit 30 to a short-circuit state or a non-short-circuit state; a determination unit 51 which determines whether the connection state between the fuel cell 10 and the power conditioner 20 is reverse connection; and a control unit 50 which controls the output of an error signal when the determination unit 51 determines that the connection state is reverse connection, and controls the second switch unit 42 to switch the reverse connection preventing circuit from the non-short-circuit state to the short-circuit state when the determination unit 51 determines that the connection state is not reverse connection.SELECTED DRAWING: Figure 1 |
