| 摘要 |
PROBLEM TO BE SOLVED: To continue the safety operation of a fuel cell power generation system, and lengthen the service life of a fuel cell by providing a bypass control device which inputs an abnormal signal of a fuel cell abnormality detecting device and controls a fuel gas bypass valve and an oxidizing gas bypass valve. SOLUTION: Abnormality detected by a fuel cell abnormality detecting device 4 is inputted to a bypass control device 5. The bypass control device 5 controls a fuel gas bypass valve 8 so as to secure a passage of fuel gas by cooperating with cutoff operation of a fuel gas flow control valve 6 of a fuel cell on which abnormality is caused, and similarly, an oxidizing gas bypass valve 9 is controlled so as to secure a passage of oxidizing gas by cooperating with a cutoff operation of an oxidizing gas flow control valve 7. The fuel gas bypass valve 8 is controlled on cutoff by cooperating with reduction in the fuel gas supplied from a fuel reformer 2 according to stopping of power generation of the fuel cell on which abnormality is caused, and similarly, the oxidizing gas bypass valve 9 is also controlled on cutoff by cooperating with reduction in the oxidizing gas supplied from an oxidizing gas supply device 3. |
