磁极旋转式新型变磁通永磁同步电机弱磁性能分析

doi:10.19595/j.cnki.1000-6753.tces.190943

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摘要

针对永磁同步电机内部磁场难以调节的问题,提出一种磁极旋转式新型变磁通永磁同步电机。深入分析该新型变磁通电机的弱磁原理,通过虚拟样机技术对调磁装置进行动力学分析,获得弹簧形变长度和齿轮旋转角度随转速变化的规律;采用有限元分析技术对永磁体不同旋转角度的感应电动势、气隙磁通密度、绕组磁链和调磁特性等进行数值分析。仿真结果表明,通过设计合理的调磁装置,在离心力作用下,齿轮旋转角度范围为0~45^°,电机具有良好的弱磁扩速性能。试制样机验证了理论分析的有效性。

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	刘细平
	肖娟娟
	徐慧
	Tanmoy Biswas
	黄朝志

关键词 ：机械调磁装置, 永磁同步电机, 旋转磁极, 电磁特性, 有限元分析

Abstract：

For overcoming the problem that the air-gap magnetic field of permanent magnet synchronous machine(PMSM) is difficulty to adjust, a novel variable-flux PMSM with rotating magnetic pole is proposed in this paper, of which the flux weakening principle of this machine was deeply analyzed. The dynamic analysis of the mechanical device with variable flux was carried out by virtual prototype technology, and the relationship between the deformation of spring and rotation angle of gear with the speed was obtained. The back-EMF, air-gap flux density, winding flux linkage and flux regulation characteristics of PMs at the different rotation angle were evaluated by finite element analysis (FEA). The simulation results show that rotating angle range of the gear is 0-45 degrees under the centrifugal force by designing a reasonable mechanical device with variable flux, and the proposed machine has excellent flux weakening ability. Some experiments of the manufactured prototype machine are performed to validate the theory analysis.

Key words： Mechanical device with variable flux permanent magnet synchronous machine rotating magnetic pole electromagnetic characteristic finite element analysis

收稿日期: 2019-07-31

PACS:

TM351

基金资助:

国家自然科学基金（51767009）、江西省科技项目（20153BCB23012,20151BBE50109,GJJ160598,20181BAB206035）和江西理工大学清江青年英才计划资助

通讯作者: 肖娟娟女,1993年生,硕士研究生,研究方向为永磁同步电机设计。E-mail：1481916751@qq.com

作者简介: 刘细平男,1976年生,博士,教授,研究方向为稀土永磁电机设计、风力发电及其相关控制。E-mail：liuxp211@163.com

引用本文:

刘细平, 肖娟娟, 徐慧, Tanmoy Biswas, 黄朝志. 磁极旋转式新型变磁通永磁同步电机弱磁性能分析[J]. 电工技术学报, 2020, 35(15): 3182-3190. Liu Xiping, Xiao Juanjuan, Xu Hui, Tanmoy Biswas, Huang Chaozhi. Analysis of Flux Weakening Performance of a Novel Variable Flux Permanent Magnet Synchronous Machine with Rotating Magnetic Pole. Transactions of China Electrotechnical Society, 2020, 35(15): 3182-3190.

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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.190943 https://dgjsxb.ces-transaction.com/CN/Y2020/V35/I15/3182

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