| 转子开辅助槽削弱双层内置式永磁同步电机转矩脉动 |
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| 引用本文： | 陈鑫,李国丽,,钱喆,,周建,王群京,,程义.转子开辅助槽削弱双层内置式永磁同步电机转矩脉动[J].微电机,2020,0(10):1-4+16. |
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| 作者姓名： | 陈鑫 李国丽 钱喆 周建 王群京 程义 |
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| 作者单位： | （1.安徽大学电气工程与自动化学院，安徽 合肥 230000；2.安徽大学 高节能电机及控制技术国家地方联合实验室，安徽 合肥 230000；3.安徽安凯汽车股份有限公司，安徽 合肥 230051） |
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| 摘 要： | 针对双层永磁结构电机的气隙磁密在两层永磁体的交界处变化较快，其产生的谐波会增加转矩脉动，提出在转子表面开两组对称辅助槽的方法来改善电机的气隙磁密波形，削弱转矩脉动。以一台双层V型永磁结构电机为研究对象，在转子表面分别开两组椭圆形的辅助槽，通过优化辅助槽的位置、大小和形状，将电机的转矩脉动从15%降低至4.3%，验证了所提方法的有效性。
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| 关 键 词： | 新能源汽车 双层”V”型永磁同步电机 辅助槽 转矩脉动 有限元仿真 |
Rotor auxiliary slot method reduces torque ripple of double-layer interior permanent magnet motor |
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| Xin Chen,Zhe Qian ,,Guoli Li ,,Jian Zhou,Yi cheng.Rotor auxiliary slot method reduces torque ripple of double-layer interior permanent magnet motor[J].Micromotors,2020,0(10):1-4+16. |
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| Authors: | Xin Chen Zhe Qian Guoli Li Jian Zhou Yi cheng |
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| Affiliation: | (1. School of electrical engineering and automation, Ahu university, Hefei 230000, China;2. National and local joint laboratory of high energy saving motor and control technology, Ahu university, Hefei 230000, China;3.Ahu Ankai Automobile Co.,Ltd., Hefei 230051, China ) |
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| Abstract: | In view of the fact that the air-gap flux density of a double-layer permanent magnet motor changes rapidly at the junction of two layers of permanent magnets, the harmonic generated by it will increase the torque ripple, a method of opening two sets of symmetrical auxiliary grooves on the rotor surface is proposed to improve the air-gap flux density waveform of the motor and weaken the torque ripple. Taking a double-layer v-type permanent magnet motor as the research object, two sets of elliptic auxiliary grooves are respectively cut on the rotor surface, and the torque ripple of the motor is reduced from 15% to 4.3% by optimizing the position, size and shape of the auxiliary grooves, which verifies the effectiveness of the proposed method. |
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| Keywords: | New energy vehicle Double-layer v-type permanent magnet synchronous motor Auxiliary slot Torque ripple Finite element simulation |
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