Unbalanced magnetic force and cogging torque of PM motors due to the interaction between PM magnetization and stator eccentricity

Seo Bosung; Sung Sangjin; Kang Kyungjin; Song Jeongyong; Jang Gunhee

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Unbalanced magnetic force and cogging torque of PM motors due to the interaction between PM magnetization and stator eccentricity

机译：PM磁化强度与定子偏心量之间的相互作用导致PM电动机的磁力和齿槽转矩不平衡

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We investigate the characteristics of cogging torque and unbalanced magnetic forces (UMF) due to the interaction between magnetization of permanent magnets (PM) and stator eccentricity in PM motors. We mathematically and numerically show that the third harmonic of PM magnetization with stator eccentricity decreases the amplitude of the pole harmonic of the cogging torque and UMF while at the same time increasing the amplitude of the least common multiple harmonic of the pole and slot numbers of cogging torque and UMF in PM motors. The effects of the third harmonic of PM magnetization in the PM motors with stator eccentricity were experimentally verified by measuring UMF and acoustic noise.

机译：由于永磁电动机（PM）的磁化强度与定子偏心率之间的相互作用，我们研究了齿槽转矩和不平衡磁力（UMF）的特性。我们用数学和数值方法表明，带有定子偏心的PM磁化的三次谐波减小了齿槽转矩和UMF的极谐波的振幅，同时增加了极点的最小公倍数谐波的振幅和齿槽数永磁电动机的扭矩和UMF。通过测量UMF和声噪声，实验验证了带有偏心的PM电动机中PM磁化三次谐波的影响。

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来源
《Microsystem technologies》 |2016年第6期|共7页
作者
Seo Bosung; Sung Sangjin; Kang Kyungjin; Song Jeongyong; Jang Gunhee;
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正文语种 eng
中图分类微电子学、集成电路（IC）;
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1. Unbalanced magnetic force and cogging torque of PM motors due to the interaction between PM magnetization and stator eccentricity [J] . Seo Bosung, Sung Sangjin, Kang Kyungjin, Microsystem technologies . 2016,第6期

机译：PM磁化强度与定子偏心量之间的相互作用导致PM电动机的磁力和齿槽转矩不平衡
2. Cogging Torque and Unbalanced Magnetic Force Prediction in PM Machines With Axial-Varying Eccentricity by Superposition Method [J] . Y. X. Li, Z. Q. Zhu IEEE Transactions on Magnetics . 2017,第11期

机译：叠加法预测轴变偏心永磁电机的齿槽转矩和不平衡磁力
3. Analysis of PM Magnetization Field Effects on the Unbalanced Magnetic Forces due to Rotor Eccentricity in BLDC Motors [J] . Mahdiuon-Rad S., Mousavi-Aghdam S. R., Reza Feyzi M., Engineering Technology and Applied Science Research . 2013,第4期

机译：无刷直流电动机转子偏心引起的永磁励磁磁场对不平衡磁力的影响
4. EFFECT OF ADDITIONAL HARMONICS OF DRIVING CURRENT ON TORQUE RIPPLE AND UNBALANCED MAGNETIC FORCE OF THE BLDC MOTORS WITH STATOR AND ROTOR ECCENTRICITIES [C] . S. J. Sung, G. H. Jang, K. J.Kang, ASME conference on information storage and processing systems . 2014

机译：驱动电流附加谐波对带有定子和转子中心点的BLDC电动机的转矩纹波和不平衡的磁力的影响
5. Cogging torque, torque ripple and radial force analysis of permanent magnet synchronous machines. [D] . Islam, Mohammed Rakibul. 2009

机译：永磁同步电机的齿槽转矩，转矩脉动和径向力分析。
6. Magnetism and Magnetic Materials: A novel PM motor with hybrid PM excitation and asymmetric rotor structure for high torque performance [O] . Gaohong Xu, Guohai Liu, Xinxin Du, -1

机译：磁性和磁性材料：具有混合永磁励磁和不对称转子结构的新型永磁电机具有高转矩性能
7. Analysis and determination of cogging torque and unbalanced magnetic forces in permanent magnet spindle motors for hard disk drives [O] . LI JIANGTAO 2006

机译：硬盘驱动器永磁主轴电机的齿槽转矩和不平衡磁力的分析与确定

Unbalanced magnetic force and cogging torque of PM motors due to the interaction between PM magnetization and stator eccentricity

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