| 一种非对称混合式永磁同步电机设计与分析 |
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| 引用本文： | 邓紫荣1,曾成碧1,卢杨1,苗虹 1,郭欣1,白维2,张志辉2. 一种非对称混合式永磁同步电机设计与分析[J]. 微电机, 2020, 0(11): 45-49+55 |
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| 作者姓名： | 邓紫荣1 曾成碧1 卢杨1 苗虹 1 郭欣1 白维2 张志辉2 |
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| 作者单位： | （1. 四川大学 电气工程学院，四川 成都 610065；2.四川革什扎水电开发有限责任公司，四川 丹巴 626300） |
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| 摘 要： | 针对传统内置式永磁同步电机磁阻转矩与永磁转矩不是在相同电流相位角下达到最大，不能最有效的利用磁阻转矩与永磁转矩的问题，提出了一种新型非对称转子结构永磁同步电机设计方案，电机输出转矩和减小转矩脉动。首先，一种不对称转子结构，通过使转子不对称，使磁阻转矩和永磁转矩在相近电流相位角下达到最大，从而提高输出转矩。其次，为衡量转矩利用率，引入转矩利用率因子，利用冻结磁导率法将电磁转矩分解为磁阻转矩和永磁转矩两部分，运用有限元确定表面磁极最佳偏移角θ；最后，对提出的新型非对称转子结构永磁同步电机进行电磁性能分析，在不增加材料与制造成本的情况下，电机最大输出转矩增加7.52%，转矩脉动减小39.15%。
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| 关 键 词： | 有限元 永磁同步电机 电磁转矩 磁阻转矩 冻结磁导率原理 |
Design and analysis of an asymmetric hybrid permanent magnet synchronous motor |
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| DENG Zirong1,ZENG Chengbi1,LU Yang1,MIAO Hong1,GUO Xin1,BAI Wei2,ZHANG Zhihui2. Design and analysis of an asymmetric hybrid permanent magnet synchronous motor[J]. Micromotors, 2020, 0(11): 45-49+55 |
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| Authors: | DENG Zirong1 ZENG Chengbi1 LU Yang1 MIAO Hong1 GUO Xin1 BAI Wei2 ZHANG Zhihui2 |
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| Affiliation: | (1. School of Electrical Engineering, Sichuan University, Chengdu 610065, China; 2. Sichuan Geshizha Hydropower Development Co., Ltd., Danba 626300, China) |
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| Abstract: | Aiming at the problem that the permanent magnet torque and the reluctance torque of the traditional rotor symmetric permanent magnet synchronous motor do not reach the maximum at the same current phase angle,and cannot be used most effectively. A new asymmetric rotor structure hybrid permanent magnet synchronous motor design scheme to improve the electromagnetic torque of the motor and reduce the torque ripple of the motor. First, an asymmetrical rotor structure is designed. By making the rotor asymmetrical, the reluctance torque and the permanent magnet torque are maximized at similar current phase angles, thereby increasing the output torque. Secondly, the torque utilization factor is introduced to measure the electromagnetic torque utilization rate, and the frozen magnetic permeability method is used to decompose the electromagnetic torque into reluctance torque and permanent magnet torque. The optimal offset angle of the surface pole of the new motor is calculated by finite element method; finally, the electromagnetic performance of the proposed new motor and the reference motor are analyzed separately. The simulation results show that the maximum output torque of the new motor increases by 7.52% without increasing costs and materials. Moment ripple reduced by 39.15%. |
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| Keywords: | finite element Permanent magnet synchronous motor Electromagnetic torque Reluctance torque Principle of frozen permeability |
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