| 王长城， 郭辉， 孙裴， 刘宁宁， 王岩松， 秦一菲.一种永磁同步电机齿槽转矩削弱方法[J].轻工机械,2018,36(6):62-66 |
| 一种永磁同步电机齿槽转矩削弱方法 |
| Method for Reducing Cogging Torque of Permanent Magnet Synchronous Motor |
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| DOI：10.3969/j.issn.1005 2895.2018.06.013 |
| 中文关键词: 永磁同步电机 齿槽转矩 能量法 傅里叶分解法 永磁体厚度 槽口宽度 |
| 英文关键词:permanent magnet synchronous motor cogging torque energy method Fourier decomposition method permanent magnet thickness slot opening width |
| 基金项目:国家自然科学基金（51675324）；上海市自然科学基金（14ZR1418600） |
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| 中文摘要: |
| 针对永磁同步电机存在的齿槽转矩问题，提出一种电机结构优化的方法削弱齿槽转矩。基于能量法和傅里叶分解法对齿槽转矩进行了解析，确定永磁体厚度和定子槽口宽度作为设计变量优化电机结构。对比优化前后齿槽转矩及其谐波，结果显示所提出的电机结构优化方法能够有效降低12次，24次及36次谐波幅值，且优化之后的峰 峰值仅为优化之前的7.99%。通过比较优化前后电机稳态运行时的电磁转矩，验证了所提出的结构优化方法能够有效改善电机输出转矩特性。 |
| 英文摘要: |
| A method of motor structure optimization was proposed for reducing cogging torque of permanent magnet synchronous motor (PMSM). The cogging torque was analyzed based on the energy method and Fourier decomposition method. Then, the thickness of the permanent magnet and the width of the stator slot opening were selected as the design variables to optimize motor structure. Comparing origin and optimized cogging torque and its harmonics, the results show that the proposed motor structure optimization method can effectively reduce the 12th, 24th, and 36th harmonic amplitudes, and the peak to peak value after optimization is only 7.99% of that before optimization. By comparing the electromagnetic torque during steady state operation of origin and optimized motor, it is verified that the proposed structure optimization method can effectively improve the motor output torque characteristics. |
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