Demagnetization Analysis of Line-Start Permanent Magnet Synchronous Motors during Its Starting Process

DOI

10.2991/eame-18.2018.11How to use a DOI?

Keywords

line-start permanent magnet; starting process; demagnetization; finite method; different start voltages

Abstract

This paper deals with the analysis for the irreversible demagnetization characteristics of a NdFeB, ‘W-type’ permanent magnet in the line-start permanent magnet synchronous motors (LSPMSM). By using the finite element method, the influence of different permanent magnets status and the different start voltages on demagnetization were studied during starting process. The largest demagnetization magnetic field was calculated by the minimum value of the projection of flux density in magnetization direction for reference points. Through the comparison of the demagnetization under different conditions, the most serious demagnetization is occurred in low voltage starting process, at the corner points of magnets. It is of great significance to analyze the performance of permanent magnets in actual operation, and it also can be used for the fast design of LSPMSM.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Peijin Yu
AU  - Changqing Zhu
AU  - Yiming Shen
AU  - Guobin Zhang
PY  - 2018/06
DA  - 2018/06
TI  - Demagnetization Analysis of Line-Start Permanent Magnet Synchronous Motors during Its Starting Process
BT  - Proceedings of the 2018 3rd International Conference on Electrical, Automation and Mechanical Engineering (EAME 2018)
PB  - Atlantis Press
SP  - 54
EP  - 57
SN  - 2352-5401
UR  - https://doi.org/10.2991/eame-18.2018.11
DO  - 10.2991/eame-18.2018.11
ID  - Yu2018/06
ER  -