Proceedings of the International Conference of Fluid Power and Mechatronic Control Engineering (ICFPMCE 2022)

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Comparative Study of Air-Gap Field Distribution Characteristics Among Different Pole Array in SPM

Authors
Xinghua He1, Liang Yan1, 2, 3, *, Xiaoshan Gao1, Pengjie Xiang1, Chris Gerada4
1School of Automation Science and Electrical Engineering, Beihang University, Beijing, 100191, China
2Science and Technology on Aircraft Control Laboratory, Beihang University, Beijing, 100191, China
3Ningbo Institute of Technology, Beihang University, Ningbo, 315800, China
4Power Electronics, Machines and Control Group, University of Nottingham, Nottingham, NG7 2RD, UK
*Corresponding author. Email: lyan1991@gmail.com
Corresponding Author
Liang Yan
Available Online 7 December 2022.
DOI
10.2991/978-94-6463-022-0_18How to use a DOI?
Keywords
Surface-mounted; Brushless Torque Motor; Harmonic Analysis; Magnetic Pole Array; Finite Element Analysis
Abstract

The pole array directly influences air-gap filed distribution and hence output torque performance especially in surface-mounted PM machine (SPM). The fundamental wave of air-gap magnetic flux density determines the average torque, and harmonic generates torque ripple. In generally, there is a trade-off between them. To simultaneously obtain high torque and low torque ripple, the selection of pole array and corresponding design parameters is essential for PM machine design. Thus, the air-gap field distribution characteristics of three kinds of pole arrays, i.e., radial-magnetized, tangential-magnetized and Halbach array are analysed and compared by finite element analysis (FEA). The effects of the pole arc coefficient and PM thickness coefficient on air-gap field distribution are analysed by fast Fourier transform (FFT). It indicates that the effects of the pole arc length on the harmonic component of air gap magnetic field is obvious and the effects of the pole thickness is very little. The performances of three pole arrays under different pole thicknesses are compared. The results show that radial-magnetized pole array perform better than Halbach array and tangential-magnetized pole array on fundamental flux density when thickness of magnetic pole is small. Besides, when the thickness of magnetic pole exceeds 0.9 times of pole distance, tangential-magnetized pole array can obtain higher fundamental magnetic density than Halbach array.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the International Conference of Fluid Power and Mechatronic Control Engineering (ICFPMCE 2022)
Series
Atlantis Highlights in Engineering
Publication Date
7 December 2022
ISBN
978-94-6463-022-0
ISSN
2589-4943
DOI
10.2991/978-94-6463-022-0_18How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Xinghua He
AU  - Liang Yan
AU  - Xiaoshan Gao
AU  - Pengjie Xiang
AU  - Chris Gerada
PY  - 2022
DA  - 2022/12/07
TI  - Comparative Study of Air-Gap Field Distribution Characteristics Among Different Pole Array in SPM
BT  - Proceedings of the International Conference of Fluid Power and Mechatronic Control Engineering (ICFPMCE 2022)
PB  - Atlantis Press
SP  - 202
EP  - 213
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-022-0_18
DO  - 10.2991/978-94-6463-022-0_18
ID  - He2022
ER  -