JACIII Vol.25 No.5 pp. 647-654
doi: 10.20965/jaciii.2021.p0647


Demagnetization Fault Diagnosis of Permanent Magnet Synchronous Motor with Inductance Disturbance

Fan Xiao*, Jing He*, and Miaoying Zhang**,†

*College of Electrical and Information Engineering, Hunan University of Technology
No. 88 Taishan Road, Tianyuan District, Zhuzhou, Hunan 412007, China

**College of Railway Transportation Locomotive and Vehicle, Hunan Railway Professional Technology College
No.89 Tiandong Road, Shifeng District, Zhuzhou, Hunan 412001, China

Corresponding author

December 3, 2020
June 9, 2021
September 20, 2021
PMSM, demagnetization fault, inductance disturbance, adaptive control

To address the problem of demagnetization fault diagnosis of permanent magnet synchronous motor (PMSM) under inductance change, a demagnetization fault detection method based on an adaptive observer is proposed. First, the mathematical model of the demagnetization fault of PMSM in a synchronous rotating coordinate system is established, and the inductance disturbance is analyzed separately. Then, considering the different characteristics of the flux linkage fault and inductance disturbance, a new adaptive observer is proposed. Two adaptive laws are designed to ensure the accuracy of fault diagnosis and to eliminate the influence of inductance disturbance, thus achieving the robust diagnosis of demagnetization fault.

Change of flux linkage of permanent magnet synchronous motor when a demagnetization fault occurs

Change of flux linkage of permanent magnet synchronous motor when a demagnetization fault occurs

Cite this article as:
F. Xiao, J. He, and M. Zhang, “Demagnetization Fault Diagnosis of Permanent Magnet Synchronous Motor with Inductance Disturbance,” J. Adv. Comput. Intell. Intell. Inform., Vol.25 No.5, pp. 647-654, 2021.
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Last updated on May. 19, 2024