| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system for optimizing the supply of fuel gas and generated power output, stabilizing generated power output or preventing performance drop. <P>SOLUTION: The target revolving speed of a hydrogen circulation pump is determined in a circulation pump target revolving speed determination part 32, based on requested generating electric power detected in a requested generating electric power detecting part 31, and if a circulation hydrogen flow rate necessary for the requested generating electric power is secured, the target revolving speed is corrected so that the lifting height of the hydrogen circulation pump is decreased with drop in hydrogen outlet pressure of the fuel cell detected with a fuel cell system state detecting part 35, and the hydrogen outlet pressure capable of exhausting impurities stored in a hydrogen circulation line by purge is secured. <P>COPYRIGHT: (C)2007,JPO&INPIT |
