120°相带环形绕组圆筒型永磁直线发电机定位力降低的优化设计

doi:10.19595/j.cnki.1000-6753.tces.201077

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Abstract The utilization of 120° phase belt toroidal windings can bring power density improvement in a tubular permanent magnet linear generator (TPMLG). However, the TPMLG always suffers from large detent force, which would cause generator oscillation or even destabilize the system. To alleviate this problem, the optimal design of the tubular permanent magnet linear generator with 120° phase belt toroidal windings (120°-TPMLG) is conducted in this paper. The influence of different structural parameters (stator iron core length, pole arc coefficient, slot shoulder width, stator teeth width and air gap length) on the detent force is analyzed via finite element method firstly. According to these analytical results, the optimal design combined with the Taguchi method is implemented to minimize the detent force without losing output power, and the optimal structural parameters of the 120°-TPMLG are obtained. To verify the effectiveness of the optimal design process, the performance of the optimal 120°-TPMLG is compared with that of the original one. It is shown that the detent force of the optimal generator is largely decreased, and the output power is slightly improved, which proves that the proposed optimal design method is available in the detent force reduction of 120°-TPMLG.

Key words： 120°phase belt toroidal windings detent force optimal design tubular permanent magnet linear generator Taguchi method

Received: 30 August 2020

PACS:

TM359.4

Fund:Natural Science Foundation of China under grant No.51777060, in part by the Major Special Project for Collaborative Innovation in Zhengzhou No. 20XTZX12023.

Corresponding Authors: Yan Zuoguang born in 1995, Master Candidate, Major research interests include permanent magnet linear generator and applications. E-mail: yzg151231@126.com

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	Si Jikai
	Yan Zuoguang
	Nie Rui
	Xu Shuai
	Dong Lianghui

Cite this article:

Si Jikai,Yan Zuoguang,Nie Rui等. Optimal Design of a Tubular Permanent Magnet Linear Generator with 120°Phase Belt Toroidal Windings for Detent Force Reduction[J]. Transactions of China Electrotechnical Society, 2021, 36(6): 1138-1148.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.201077 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I6/1138

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