FUEL CELL SYSTEM AND ITS CONTROL METHOD

摘要

A fuel cell system includes; a fuel cell which generates electricity by using a fuel gas and an oxidant gas as reaction gases; current control means which controls current of a fuel cell; voltage control means which controls voltage of the fuel cell; and heat value control means which calculates a heat value required by the fuel cell system and decides a target current value of the current control means and a target voltage value of the voltage control means so as to generate the calculated necessary heat amount, thereby controlling the heat value. Thus, it is possible to supply a heat required for the fuel cell system without increasing the size of the fuel cell system.

主权项

1. A fuel cell system comprising:
a fuel cell that generates electric power using a fuel gas and an oxidizing gas as reaction gases; a current controlling section that controls a current of the fuel cell so that the current becomes a target current value; a voltage controlling section that controls a voltage of the fuel cell so that the voltage becomes a target voltage value; and a heat generation quantity controlling section that controls a heat generation quantity, by:
calculating a necessary heat quantity that is necessary for the fuel cell system, anddetermining the target current value of the current controlling section and a target voltage value of the voltage controlling section so as to generate heat in the necessary required heat quantity and output power in a required output power.