Patent ID: 8277990

Claim:
A fuel cell system, comprising: a system controlling device programmed to execute control of components of the fuel cell system, the system controlling device including: a required power generation amount calculating unit which calculates a required power generation amount of a fuel cell; a target operational state calculating unit which calculates a target operational state corresponding to the required power generation amount; an operational state detecting unit which detects an operational state of the fuel cell; a correction power generation amount calculating unit which calculates a correction power generation amount used for correcting the required power generation amount based on a deviation between the target operational state and the detected operational state; an allowable power generation amount calculating unit which calculates an allowable power generation amount which the fuel cell can stably generate based on the detected operational state; and an output power generation amount determining unit which determines an output power generation amount of the fuel cell based on a relation between the allowable power generation amount and a power generation amount obtained by correcting the required power generation amount by the correction power generation amount, wherein the output power generation amount determining unit determines the allowable power generation amount as the output power generation amount when the power generation amount obtained by correcting the required power generation amount by the correction power generation amount is equal to or larger than the allowable power generation amount, and the output power generation amount determining unit determines the power generation amount obtained by correcting the required power generation amount as the output power generation amount when the power generation amount obtained by correcting the required power generation amount by the correction power generation amount is smaller than the allowable power generation amount.