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| Different Pole-Arc Width Combination for Reducing Cogging Torque of Interior-Magnet PMSM |
| Yang Yubo, Wang Xiuhe, Ding Tingting |
| Shandong University Jinan 250061 China |
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Abstract A new method is advised to reduce the cogging torque of interior-magnet permanent magnet synchronous motor. Changing the lamination bridges, only the width is changed in this method, and the interval between two adjacent poles is the same. By suitable selecting the shape and width of lamination bridges, the cogging torque can be reduced. The analytical expression of cogging torque of interior-magnet permanent magnet synchronous motor with this method is obtained. Based on the analytical expression, the Fourier expression of the square of residual flux density of PM is found. Then the method to calculate the width of pole arc is advised. At last, the finite element method is used to calculate the cogging torque of one prototype, and the results verify that the cogging torque can be greatly reduced.
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Received: 30 June 2008
Published: 17 February 2014
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[1] Wang Xiuhe, Yang Yubo, Fu Dajin. Study of cogging torque in surface-mounted permanent magnet motors with energy method[J]. Journal of Magnetism and Magnetic Material, 2003, 267(11): 80-85.
[2] Bianchi N, Bolognani S. Design techniques for reducing the cogging torque in surface-mounted PM motors[J]. IEEE Trans. on Industry Applications, 2002, 38(5): 1259-1265.
[3] Li T, Slemon G. Reduction of cogging torque in permanent magnet motors[J]. IEEE Trans. on Magnetics, 1988, 24(11): 2901-2903.
[4] Breton C, Bartolome J. Influence of machine symmetry on reduction of cogging torque in permanent-magnet brushless motors[J]. IEEE Trans. on Magnetics, 2000, 36(5): 3819-3823.
[5] Hwang S M, Eom J B, Hwang G B, et al. Cogging torque and acoustic noise reduction in permanent magnet motors by teeth pairing[J]. IEEE Trans. on Magnetics, 2000, 36(5): 3144-3146.
[6] Thomas M J, Soong W L. Pulsating torque minimization techniques for permanent magnet AC motor drives-a review[J]. IEEE Trans. on Industrial Electronics, 1996, 43(2): 321-330.
[7] Hwang C C, John S B, Wu S S. Reduction of cogging torque in spindle motors for CD-ROM drive[J]. IEEE Trans. on Magnetics, 1998, 34(2): 468-470.
[8] Hanselman D C. Effect of skew, pole count and slot count on brushless motor radial force, cogging torque and back EMF[J]. IEE Proc.-Electr. Power Appl., 1997, 144(5)：325-330.
[9] 宋伟, 王秀和, 杨玉波. 削弱永磁电机齿槽转矩的一种新方法[J]. 电机及控制学报, 2004, 8(3): 214-217.
[10] 杨玉波, 王秀和, 张鑫, 等. 磁极偏移削弱永磁电机齿槽转矩方法[J]. 电工技术学报, 2006, 21(10): 22-25.
[11] 王秀和, 杨玉波, 丁婷婷, 等. 基于极弧系数选择的实心转子永磁同步电动机齿槽转矩削弱方法研究[J]. 中国电机工程学报, 2005, 25(15): 146-149. |
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2009, Vol. 24 
