| 摘要 |
<P>PROBLEM TO BE SOLVED: To appropriately cancel abnormality, corresponding to an abnormal cause by properly determining the abnormal cause of a fuel cell power generation system. <P>SOLUTION: If voltage reduction of a fuel cell is voltage reduction of the cell (S3) as a whole, when a physical quantity correlated to an anode gas flow rate is less than a set value (S4), the voltage reduction of the fuel cell is determined to be caused by the lack of the amount of hydrogen (S5), when the physical quantity correlated to the anode gas flow rate is larger than the set value (S4); and when the anode gas temperature is lower than the set value, it is determined to be caused by the lack of humidification of reformed gas (S8, S9), when the anode gas temperature is higher than the set value, it is determined to be caused by CO poisoning (S8, S12). In any of the cases, the load current of the fuel cell is reduced (S6-S13) and a command for increasing the amount of hydrogen of the reformed gas corresponding to each cause (S7), a command for raising the anode gas temperature (S11) or a command for reducing the CO concentration of the reformed gas (S14) is outputted. <P>COPYRIGHT: (C)2007,JPO&INPIT |
