An object of the present invention is to provide a fuel cell system which can control the moisture state inside the fuel cell so as to be in an optimal state that can provide high power output and prevent the occurrence of a dry-up. [0002] The first fuel c...

Provided is a method for shutting down an indirect internal reforming SOFC, in which reliable reforming, prevention of anode oxidative degradation, fuel saving and time saving are possible. Reforming catalyst layer temperature T is measured, and FkCALC is ...

A target value of each of factors in a fuel cell system is determined based on a correspondence relationship of a change in each of the factors determining reaction conditions of fuel in a fuel cell to a change in an external environment of the fuel cell s...

A fuel cell system that is able to perform power generation more stably than in the past regardless of external environment is provided. Based on a temperature T1 of a power generation section 10 detected by a temperature detection section 30, a supply amo...