Numerical study of electromagnetic force density of permanent magnet synchronous motor under demagnetization fault

HaiXi Gao; YinQuan Yu

doi:10.1117/12.2620918

29 November 2021 Numerical study of electromagnetic force density of permanent magnet synchronous motor under demagnetization fault

HaiXi Gao, YinQuan Yu

Author Affiliations +

Proceedings Volume 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021); 120803T (2021) https://doi.org/10.1117/12.2620918
Event: 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 2021, Nanchang, China

Abstract

The uneven electromagnetic force inside the motor is the main cause of the vibration and acoustic noise of the PMSM (PMSM).To study the problem of increased vibration and acoustic noise caused by variations in the radial electromagnetic force density caused by a partial demagnetization fault of a PMSM, the finite element method (FEM) is used to study the radial flux density and radial electromagnetic force waves on the stator surface of a 4-pole 24-slot embedded PMSM. The changes of electromagnetic force waveform and harmonic order are analyzed when PMSM is partially demagnetized. The measurement results show that the fundamental wave amplitude of radial electromagnetic force on the stator surface increases, and fractional harmonics appear, with the increase of demagnetization grade.

Citation Download Citation

HaiXi Gao and YinQuan Yu "Numerical study of electromagnetic force density of permanent magnet synchronous motor under demagnetization fault", Proc. SPIE 12080, 4th International Symposium on Power Electronics and Control Engineering (ISPECE 2021), 120803T (29 November 2021); https://doi.org/10.1117/12.2620918

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