| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of properly operating the whole system by securely supplying electric power to an auxiliary machine when an abnormality occurs in supplying electric power to the auxiliary machine from a fuel cell during power generation. <P>SOLUTION: A fuel cell system includes: an AC-DC converter 16c, during a stable operation in addition to a starting operation and a stopping operation, which receives an AC power output from a system power supply 12, converts the AC power into DC power and outputs the DC power to a DC-DC converter 16e for an auxiliary machine; a first rectifier element 16f that accepts only a current applied from a fuel cell 11d to the DC-DC converter 16e for the auxiliary machine; a second rectifier element 16g which accepts only a current applied from the AC-DC converter 16c to a first electric power feed line L1; and a switch 16h which shuts off between the fuel cell 11d and the DC-DC converter 16e during a starting operation or a stopping operation, and communicates between them during a stable operation. <P>COPYRIGHT: (C)2012,JPO&INPIT |
