Effect of demagnetization faults on line start AF‑PMSM performance

Mustafa Eker; Mustafa Ozsoy

Effect of demagnetization faults on line start AF‑PMSM performance

Mustafa Eker

Mustafa Ozsoy

Vol. 22, No. 6, pp. 1001-1009, Jun. 2022

10.1007/s43236-022-00439-5

Axial fl ux

PMSM

Line start

Demagnetization fault

Abstract

This study is concerned with irreversible demagnetization faults in axial fl ux permanent magnet synchronous motors (AFPMSM). Line start capability was provided to the AF-PMSM by making changes in its traditional rotor architecture. With this architecture, the motor operates as an asynchronous motor in the transient state and as a synchronous motor in the steady state. In this study, the impacts of an irreversible demagnetization fault on motor performance, which occurs in motors due to various reasons, is investigated. The four poles of the used AF-PMSM have 5.5 kW of shaft power. Each pole is comprised of fi ve identical magnets. Diff erent rates (20%, 40%, and 60%) of demagnetization failure were created in a single pole. The data acquired from the faulty motors were compared to data from a healthy motor. The results indicate that irreversible demagnetization faults have an adverse impact on motor performance. It was observed that the experimentally created demagnetization faults increase the current drawn by the motor. In addition, they cause a decrease in both the power factor and effi ciency. However, the faults did not have an adverse impact on the starting capability of the motor. The unique aspect of the present study is that it is the fi rst time the impacts of demagnetization faults on the performance of line start AF-PMSMs have been examined.

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Cite this article

[IEEE Style]

M. Eker and M. Ozsoy, "Effect of demagnetization faults on line start AF‑PMSM performance," Journal of Power Electronics, vol. 22, no. 6, pp. 1001-1009, 2022. DOI: 10.1007/s43236-022-00439-5.

[ACM Style]

Mustafa Eker and Mustafa Ozsoy. 2022. Effect of demagnetization faults on line start AF‑PMSM performance. Journal of Power Electronics, 22, 6, (2022), 1001-1009. DOI: 10.1007/s43236-022-00439-5.