Fault-tolerance control method for open-winding multi-disc motor system

A fault-tolerance control method for an open-winding multi-disc motor capable of being used in wide speed range applications is designed and introduced. The open-winding method is proven to be effective in field weakening to enhance high speed performance. But the dual inverter may increase the chance of hardware function failure. No additional hardware is required to realize the control method. By the way, it can be applied in the proposed multi-disc motor which could improve the reliability of system. The experiments waveform show that the system when system work the internal switch of the power module failure is work normally which proves the effectiveness of the proposed fault tolerance-control method.