Patent ID: 7967572

Claim:
A hydrogen operated power system, comprising: a supply system which supplies a gaseous fuel from a fuel supply tank to a hydrogen operated power source; a pump provided in the supply system, which is driven by a sensorless motor; an abnormality detecting portion which detects a plurality of types of different abnormalities related to currents driving the motor using a plurality of sensors at a plurality of different locations, the plurality of types of different abnormalities including abnormality in a power line supplying a power to an inverter of the motor and over-current in circuits after the current flows into the inverter; and an abnormality determining portion which counts up an inclusive number of the plurality of types of different abnormalities, regardless of type, compares the number of the detected plurality of types of different abnormalities with a predetermined number, and determines that an abnormality has occurred in the supply system when the counted up inclusive number of the plurality of types of different abnormalities reaches the predetermined number after an instruction has been given to start the motor until a predetermined period of time has passed, the predetermined number being larger than one.