Magnetic Field Analysis of Trapezoidal Halbach Permanent Magnet Linear Synchronous Motor Based on Improved Equivalent Surface Current Method

作者

  • Bo Li School of Mechatronic Engineering Xi’an Technology and Business College, Xi’an 710200, China
  • Junan Zhang School of Mechatronic Engineering Xi’an Technological University, Xi’an 710021, China
  • Xiaolong Zhao School of Mechatronic Engineering Xi’an Technological University, Xi’an 710021, China
  • Zhangyi Miao School of Mechatronic Engineering Xi’an Technological University, Xi’an 710021, China
  • Hao Dong School of Mechatronic Engineering Xi’an Technological University, Xi’an 710021, China
  • Huijie Li School of Mechatronic Engineering Xi’an Technology and Business College, Xi’an 710200, China

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https://doi.org/10.13052/2025.ACES.J.400109

关键词:

Air gap magnetic field, harmonic distortion rate, improved equivalent surface current method (IESCM), permanent magnet linear synchronous motor (PMLSM)

摘要

This paper proposes an improved analytical method to calculate the two-dimensional air gap magnetic field (AGMF) of the permanent magnet array in trapezoidal Halbach permanent magnet linear synchronous motors. The influence of the trapezoidal magnet bottom angle a, equivalent width coefficient aw, height coefficient ah and air gap height coefficient ag on the amplitude and harmonic distortion rate of the air gap central magnetic field is analyzed. Based on the equivalent surface current method (ESCM), an improved equivalent algorithm based on trapezoidal side length is proposed for the trapezoidal Halbach permanent magnet array (THPMA). The equivalent analytical formula of two-dimensional air gap flux density is derived and verified by the finite element method (FEM). Results show that the improved equivalent surface current method (IESCM) is convenient and accurate and is suitable for magnetic field calculation of irregular magnetic poles with arbitrary section shape. Analysis shows that, compared with a rectangular magnet, when the bottom angle a of the magnet is greater than 90∘, AGMF can obtain the maximum peak value of magnetic flux density (Bpeak) and the minimum total harmonics distortion of magnetic flux density (THDB).

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Bo Li was born in Shanxi, China. He received the B.S. and M.E. degree in electrical engineering from Xi’an Technological University, China, in 2009 and 2012, respectively. Since 2017, he has been working toward the Ph.D. at the School of Mechatronic Engineering, Xi’an Technological University, Xi’an, China. His current research interests include multi objective design optimization of permanent linear magnet synchronous motors (PMLSM) and fault diagnosis and monitoring in PMLSM.

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Junan Zhang was born in Shaanxi, China. He received the B.S. and M.E. degree from Beijing Institute of Technology. In January 1982, he obtained his Ph.D. from Northwestern Polytechnic University in 2006. In 1998, he visited Kyoto technological fiber University in Japan for half a year. Mainly engaged in theoretical research on gas lubrication technology, his current research interests include multi-objective design optimization of permanent magnet synchronous motors (PMSLM), high-performance aerostatic bearings and guide rails.

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Xiaolong Zhao was born in Shaanxi, China. He received his Ph.D. degree from Xi’an Technological University. His current research interests include multi-objective design optimization of permanent magnet synchronous motors (PMSLM), and fault diagnosis and monitoring in PMSLM ultra-precision air flotation support technology.

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Zhangyi Miao was born in Sanmenxia, Henan, China. Since 2021, he has been studying for a master’s degree in mechanical engineering at Xi’an Technological University. His current research interests include analysis and design of linear motors, design and application of mechanical transmission systems.

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Hao Dong was born in Shaanxi, China. He received the B.E. degree in mechanical design, manufacturing and automation from Xi’an Technological University in 2007. He received the M.E. degree in machinery manufacturing and automation from Xi’an Technological University in 2010 and Ph.D. in mechanical design and theory from Northwestern University of Technology in 2013. His current research interests include mechanical transmission system dynamics and mechanical transmission system design and application.

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Li Huijie was born in Shaanxi, China. He has been studying for a bachelor’s degree in electrical engineering and Automation at Xi’an Technology and Business College since 2021. His current research interests include power electronics and electrical transmission, mechanical transmission system design and applications.

参考

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已出版

2025-01-30

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[1]
B. . Li, J. . Zhang, X. . Zhao, Z. . Miao, H. . Dong, 和 H. . Li, 《Magnetic Field Analysis of Trapezoidal Halbach Permanent Magnet Linear Synchronous Motor Based on Improved Equivalent Surface Current Method》, ACES Journal, 卷 40, 期 01, 页 69–78, 1月 2025.

期

2025: Vol 40 Iss 1

栏目

General Submission

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