| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell system capable of achieving a proper fail-safe control even in the case that an output voltage of a fuel cell cannot be detected.SOLUTION: In an FCHV system 100, a load device 130 is connected to a fuel cell 110 and a battery 120, and an FC converter 150, a battery converter 180, and a load inverter 140 are connected to each of them. Voltage sensors 11 and 12 are provided to a primary side and a secondary side of the FC converter 150; a voltage sensor 13 is provided to a primary side of the load inverter 140; and voltage sensors 14 and 15 are provided to a primary side and a secondary side of the battery converter 180. A controller 160, when the voltage sensor 11 fails, estimates an output voltage of the fuel cell 110 by using a voltage detection signal from the voltage sensors 12, 13, and executes steady voltage control to be switched over to the battery 120 drive on the basis of the estimated output voltage. |
