| 永磁同步电机永磁体形状分析与优化 |
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| 引用本文： | 常九健,马文礼,黄金龙. 永磁同步电机永磁体形状分析与优化[J]. 大电机技术, 2012, 0(2): 15-18 |
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| 作者姓名： | 常九健 马文礼 黄金龙 |
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| 作者单位： | 1. 中国科学院光电技术研究所,成都610209;中国科学院研究生院,北京100039
2. 中国科学院光电技术研究所,成都,610209 |
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| 基金项目： | 国家自然科技基金(60978050) |
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| 摘 要： | 本文通过对永磁体形状进行分析和优化使永磁同步电机产生正弦形反电动势。首先在理想条件下利用拉普拉斯方程对永磁同步电机的永磁体形状进行了推导,并提出了两种近似的永磁体形状来代替理想的正弦形永磁体,然后通过对两种永磁体气隙进行有限元分析,可以得出这两种永磁体产生的气隙磁密与标准的正弦形气隙磁密波形比较接近。最后通过对两种永磁体电机的反电动势进行谐波分析得出弧形永磁体较瓦片型永磁体产生的反电动势谐波成分少,更适合用于永磁同步电机。
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| 关 键 词： | 永磁同步电机 反电动势 永磁体形状 有限元分析 |
Analysis and Optimum of Magnet Shape in Permanent Magnet Synchronous Motors |
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| CHANG Jiu-jian , MA Wen-li , HUANG Jin-long. Analysis and Optimum of Magnet Shape in Permanent Magnet Synchronous Motors[J]. Large Electric Machine and Hydraulic Turbine, 2012, 0(2): 15-18 |
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| Authors: | CHANG Jiu-jian MA Wen-li HUANG Jin-long |
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| Affiliation: | 1(1. The Institute of Optics and Electronics, the Chinese Academy of Sciences, Chengdu 610209, China; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China) |
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| Abstract: | This paper introduces the technique of magnet shaping for permanent magnet synchronousmotor (PMSM) to produce required sinusoidal back electromotive force (EMF) waveforms. Firstlythe ideal magnet shape to produce sinusoidal waveforms is obtained by Laplace’s equation, and then two modified magnet shapes are proposed to substitute the ideal magnet shape. Finite-element-analysis is then employed to verify the flux distribution of the two magnet shapes. At last, the back EMFs are measured on two PMSMs with different magnet shape, by the method of FFT, we get the conclusion that the arc shape magnet is more suitable for PMSM. |
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| Keywords: | permanent magnet synchronous motor (PMSM) back electromotive force (EMF) magnet shape finite-element-analysis (FEA) |
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