Method for detecting surge in electrically driven compressor of vehicle fuel cell system, involves detecting compressor pumping based on change in torque and target current of drive device, and target rotational speed of compressor

摘要

The method involves determining drive torque and current of a drive device (26) based on target rotational speed of compressor (18). The voltage is generated for driving the drive device based on target current. The actual current of drive device and actual rotational speed of compressor are recorded. The actual rotational speed of compressor is determined based on driving torque, load torque, and resulting torque of drive device. The compressor pumping is detected based on change in resultant torque and target current of drive device, and target rotational speed of compressor. An independent claim is included for a fuel cell system.