METHOD FOR MONITORING OF FUEL CELL STACK STATUS

摘要

According to an embodiment of the present invention, a method for diagnosing a failure of a fuel cell stack includes the steps of: applying a composed current having mutually different frequency bands to the fuel cell stack; extracting diagnosis data from each of different frequency filters by passing an output voltage of the fuel cell stack through the filters; and determining whether the fuel cell stack is failed or not using each of the diagnosis data extracted from the filters. Therefore, the method according to the present invention further improves the abilities of diagnosis and analysis by a fast determination of whether the fuel cell stack is failed or not using the diagnosis data acquired by filtering the output voltage of the fuel cell stack after applying the composed current having different frequency bands to the fuel cell stack.