Patent ID: 8597839

Claim:
A fuel cell system comprising: a fuel cell that supplies generated electric power to external power loads connected to a system power source; a reforming apparatus that supplies fuel gas generated by reforming unreformed fuel to the fuel cell, the reforming apparatus including a reforming section that generates fuel gas from unreformed fuel and a burner section supplied with combustible gas and combustion oxidizer gas that combusts the combustible gas with the combustion oxidizer gas to heat the reforming section with combustion gas; and a controller programmed to control operations of the fuel cell and the reforming apparatus, the controller being programmed to execute a recovery operation, when the fuel cell system is unable to be stopped at a time that the system power source is abnormal, so that the fuel cell system is brought into a restartable state, and upon completion of the recovery operation, the controller is programmed to bring the fuel cell system into a standby state, wherein the recovery operation includes a cooling processing of the burner section and a pressure regulation processing of respective interiors of the reforming apparatus and the fuel cell.