Design of Permanent Magnet-Assisted Synchronous Reluctance Motor with Low Torque Ripple

Permanent magnet-assisted synchronous reluctance motors (PMSRMs) have been widely used in household appliances, national defense and the military, due to their advantages of low cost and high efficiency. However, their excessive torque ripple cause a series of problems, such as high vibration and no...

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Main Authors: Xinmin Li, Zihan Sun, Wenbo Sun, Liyan Guo, Huimin Wang
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:World Electric Vehicle Journal
Subjects:
Online Access:https://www.mdpi.com/2032-6653/14/4/82
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author Xinmin Li
Zihan Sun
Wenbo Sun
Liyan Guo
Huimin Wang
author_facet Xinmin Li
Zihan Sun
Wenbo Sun
Liyan Guo
Huimin Wang
author_sort Xinmin Li
collection DOAJ
description Permanent magnet-assisted synchronous reluctance motors (PMSRMs) have been widely used in household appliances, national defense and the military, due to their advantages of low cost and high efficiency. However, their excessive torque ripple cause a series of problems, such as high vibration and noise. To solve this problem, this paper first considers the important factor that causes the torque ripple—the cogging torque. Firstly, the generating principle of the cogging torque is analyzed, and a method combining magnetic pole migration and the stator auxiliary groove is proposed. On this basis, considering the position, width, depth, quantity and shape of the auxiliary groove, the Taguchi method is used to optimize the proposed improved structure. Finally, a new motor structure that can minimize torque ripple is obtained. Compared with the original structure, the cogging torque is reduced by 57.6%, the torque ripple is reduced by 38%, and the electromagnetic torque is only reduced by 1.6%.
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spelling doaj.art-f6cedf91030647c9a63fa130331e929c2023-11-17T21:49:56ZengMDPI AGWorld Electric Vehicle Journal2032-66532023-03-011448210.3390/wevj14040082Design of Permanent Magnet-Assisted Synchronous Reluctance Motor with Low Torque RippleXinmin Li0Zihan Sun1Wenbo Sun2Liyan Guo3Huimin Wang4School of Electrical Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Electrical Engineering, Tiangong University, Tianjin 300387, ChinaWEICHAI Power Co., Ltd., Weifang 261061, ChinaSchool of Electrical Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Electrical Engineering, Tiangong University, Tianjin 300387, ChinaPermanent magnet-assisted synchronous reluctance motors (PMSRMs) have been widely used in household appliances, national defense and the military, due to their advantages of low cost and high efficiency. However, their excessive torque ripple cause a series of problems, such as high vibration and noise. To solve this problem, this paper first considers the important factor that causes the torque ripple—the cogging torque. Firstly, the generating principle of the cogging torque is analyzed, and a method combining magnetic pole migration and the stator auxiliary groove is proposed. On this basis, considering the position, width, depth, quantity and shape of the auxiliary groove, the Taguchi method is used to optimize the proposed improved structure. Finally, a new motor structure that can minimize torque ripple is obtained. Compared with the original structure, the cogging torque is reduced by 57.6%, the torque ripple is reduced by 38%, and the electromagnetic torque is only reduced by 1.6%.https://www.mdpi.com/2032-6653/14/4/82permanent magnet-assisted synchronous reluctance motors (PMSRMs)low torque ripplelow cogging torquepermanent magnet shiftingstator auxiliary grooveTaguchi method
spellingShingle Xinmin Li
Zihan Sun
Wenbo Sun
Liyan Guo
Huimin Wang
Design of Permanent Magnet-Assisted Synchronous Reluctance Motor with Low Torque Ripple
World Electric Vehicle Journal
permanent magnet-assisted synchronous reluctance motors (PMSRMs)
low torque ripple
low cogging torque
permanent magnet shifting
stator auxiliary groove
Taguchi method
title Design of Permanent Magnet-Assisted Synchronous Reluctance Motor with Low Torque Ripple
title_full Design of Permanent Magnet-Assisted Synchronous Reluctance Motor with Low Torque Ripple
title_fullStr Design of Permanent Magnet-Assisted Synchronous Reluctance Motor with Low Torque Ripple
title_full_unstemmed Design of Permanent Magnet-Assisted Synchronous Reluctance Motor with Low Torque Ripple
title_short Design of Permanent Magnet-Assisted Synchronous Reluctance Motor with Low Torque Ripple
title_sort design of permanent magnet assisted synchronous reluctance motor with low torque ripple
topic permanent magnet-assisted synchronous reluctance motors (PMSRMs)
low torque ripple
low cogging torque
permanent magnet shifting
stator auxiliary groove
Taguchi method
url https://www.mdpi.com/2032-6653/14/4/82
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