关键词: 永磁同步电机, 数字孪生, 故障诊断

Abstract: After long-term operation, Permanent magnet synchronous motors ( PMSM) are inevitably prone to various faults , such as demagnetization faults, inter turn short circuit faults, bearing faults, etc. Timely diagnosis of motor faults is an important task. A fault diagnosis method of PMSM based on digital twin was proposed, and the basic structure of digital twin technology was introduced. According to the physical entity parameters of PMSM, the digital twin model of PMSM was constructed, and it was combined with fault diagnosis technology to realize intelligent diagnosis of turn to turn short circuit and demagnetization faults of PMSM.

Key words: permanent magnet synchronous motor, digital twins, fault diagnosis