基于球谐函数的动量球定子磁场分析

doi:10.19595/j.cnki.1000-6753.tces.L80058

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Abstract This paper presents a new spatial magnetic field (MF) analysis method of cylindrical stator coil. In the double polyhedral structure reaction sphere (RS), air-cored stator coils formed into a cylindrical shape are distributed on the surface of the stator shell in accordance with a certain rule. First, the energized coil is equivalent to a cylindrical permanent magnet, the conical permanent magnet model is obtained using the size equivalent, and the relationship between the coil current and the residual magnetization of the PM is obtained. Then, the spherical harmonics description of the air gap magnetic field is obtained by solving the Laplace equation with the air gap scalar magnetic field. Finally, by analyzing the finite element simulation results and experimental results, it can be seen that the radial magnetic density analytical expression has a good accuracy in fitting the stator MF.

Key words： Reaction sphere stator magnetic field analytical method coil equivalent spherical harmonics

Received: 13 June 2018 Published: 17 December 2018

PACS:

TM351

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	Articles by authors
	Li Bin
	Zhang Shuo
	Li Guidan
	Li Hongfeng

Cite this article:

Li Bin,Zhang Shuo,Li Guidan等. Stator Magnetic Field Analysis of Reaction Sphere Based on Spherical Harmonics[J]. Transactions of China Electrotechnical Society, 2018, 33(23): 5442-5448.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L80058 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I23/5442

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