Analysis of demagnetization characteristics and effects of PMSM controlled by frequency converter

Enyuan Dong; Hexi Wang; Yongxing Wang; Chuanlong Zhang; Zhenqiang Yang; Sheng Yin; Ruida Zhuang

doi:10.1117/12.2640776

19 October 2022 Analysis of demagnetization characteristics and effects of PMSM controlled by frequency converter

Enyuan Dong, Hexi Wang, Yongxing Wang, Chuanlong Zhang, Zhenqiang Yang, Sheng Yin, Ruida Zhuang

Proceedings Volume 12294, 7th International Symposium on Advances in Electrical, Electronics, and Computer Engineering; 1229412 (2022) https://doi.org/10.1117/12.2640776
Event: 7th International Symposium on Advances in Electrical, Electronics and Computer Engineering (ISAEECE 2022), 2022, Xishuangbanna, China

Abstract

This paper selects the PMSM (permanent magnet synchronous motor) controlled by the frequency converter as the research object, and simulates the distribution of the magnetic field and magnetic flux lines of motor in different states by using finite element software. It is found that due to the action of encoder, no matter whether the motor is stable at rated speed or not, the armature reaction always acts near the cross axis of the motor, and makes both ends of the PM have the effect of magnetization and demagnetization respectively. And the increase of load torque will also reduce the overall working point of the PM (permanent magnet). In the experimental part, two types of motors with partial demagnetization and uniform demagnetization were selected to carry out drag experiments and load experiments respectively, and the higher the degree of demagnetization, the higher the load coefficient, the more obvious the effect is.

Citation Download Citation

Enyuan Dong, Hexi Wang, Yongxing Wang, Chuanlong Zhang, Zhenqiang Yang, Sheng Yin, and Ruida Zhuang "Analysis of demagnetization characteristics and effects of PMSM controlled by frequency converter", Proc. SPIE 12294, 7th International Symposium on Advances in Electrical, Electronics, and Computer Engineering, 1229412 (19 October 2022); https://doi.org/10.1117/12.2640776

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