Analysis of fault characteristics of uniform demagnetization of permanent magnet synchronous motor

Tao Li; YinQuan Yu

doi:10.1117/12.2619442

29 November 2021 Analysis of fault characteristics of uniform demagnetization of permanent magnet synchronous motor

Tao Li, YinQuan Yu

Proceedings Volume 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021); 120803P (2021) https://doi.org/10.1117/12.2619442
Event: 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 2021, Nanchang, China

Abstract

To study the influence of the uniform demagnetization of permanent magnets (PMs) on motor performance, this paper takes a three-phase eight-pole Permanent Magnet Synchronous Motor (PMSM) as the research specimen. The influences of back electromotive force (back-EMF) and radial magnetic density with different grades of demagnetization are analyzed. The simulation results show that as the grade of uniform demagnetization increases, the back-EMF and radial magnetic density gradually decrease, after FFT, according to the changes of the amplitude of some harmonics of the back-EMF, it should be determined whether the motor has uniform demagnetization. This research conclusions could provide a guideline for fault diagnosis of motor demagnetization.

Citation Download Citation

Tao Li and YinQuan Yu "Analysis of fault characteristics of uniform demagnetization of permanent magnet synchronous motor", Proc. SPIE 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 120803P (29 November 2021); https://doi.org/10.1117/12.2619442

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