FAULT DIAGNOSIS DEVICE AND METHOD BASED OF CURRENT DETECTING OF FUEL CELL STACK

摘要

According to an embodiment of the present invention, an apparatus for diagnosing a fault of a fuel cell stack based on a measurement of a stack current comprises an alternating current (AC) generation circuit configured to apply an AC to a fuel cell stack driven by a basic operating current (direct current: DC); a current measurement circuit configured to measure a current of the fuel cell stack caused by the DC applied to the fuel cell stack; and a Micom configured to diagnose a fault of the fuel cell stack on the basis of a current measurement result of the current measurement circuit.