| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system in which output reduction due to a flooding phenomenon in a low-temperature operation is prevented while reduction of system efficiency of the fuel cell system is suppressed. <P>SOLUTION: In this fuel cell system, by a gas flow control means of a control unit 50, when the temperature of a fuel cell stack 1 based on a temperature sensor (temperature detecting means) 3 is a prescribed temperature or less, based on difference between the temperature of the fuel cell stack 1 and the prescribed temperature, (at least one) gas flow rate of (fuel gas or) oxidizer gas is increased from that in normal power generation, and when the temperature of the fuel cell stack 1 has reached the prescribed temperature, a control is carried out so as to decrease the gas flow rate accompanying the rise of the temperature of the fuel cell stack 1 so that the gas flow rate becomes the flow rate at the normal power generation operation. <P>COPYRIGHT: (C)2007,JPO&INPIT |
