Study of Reduction Methods of Cogging Torque in Line-Start Permanent Magnet Synchronous Motor by Changing the Parameters of Stator Teeth and Slots
Tang Xu1,2, Wang Xiuhe1 ,Tian Mengmeng1, Meng Xiaoxue1
1. School of Electrical Engineering of Shandong University Jinan 250061 China; 2. School of Automation Engineering of Qingdao Technological University Qingdao 266520 China
Abstract：Cogging torque is a common problem to permanent magnet machines,and it is one of the issues that should be paid attention to at the design stage.The line-start permanent magnet synchronous motor (LSPMSM) has the self-starting ability by utilizing the asynchronous torque which generated by squirrel-cage,but the cogging torque will adversely affect the operation of LSPMSM.The methods of reducing the cogging torque of LSPMSM by changing the parameters of stator teeth and slots are studied.The analytical expressions of the cogging torque with the changing of the stator tooth width,the pairing of the stator teeth and the pairing of the stator slots are deduced.The corresponding methods of determining the suitable parameters of stator teeth and slots that can effectively reduce the cogging torque of LSPMSM are given.The calculation by finite element method (FEM) shows that the above methods can effectively reduce the cogging torque of LSPMSM and do not significantly affect the motor performance.
唐 旭,王秀和,田蒙蒙,孟笑雪. 基于改变定子齿槽参数的异步起动永磁同步电动机齿槽转矩削弱措施研究[J]. 电工技术学报, 2016, 31(23): 1-8.
Tang Xu, Wang Xiuhe ,Tian Mengmeng, Meng Xiaoxue. Study of Reduction Methods of Cogging Torque in Line-Start Permanent Magnet Synchronous Motor by Changing the Parameters of Stator Teeth and Slots. Transactions of China Electrotechnical Society, 2016, 31(23): 1-8.
[1] 王秀和,杨玉波,朱常青.异步起动永磁同步电动机——理论、设计与测试[M].北京:机械工业出版社,2009. [2] 王秀和.永磁电机[M].北京:中国电力出版社,2007. [3] Lu Yongping,Li Yong.Tooth-slot cogging torque and noise analysis of permanent magnet motors[C]//Proceedings of the Fifth International Conference on Electrical Machines and Systems,Shenyang,2001:860-862. [4] 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(1):80-85. [5] 杨玉波,王秀和,丁婷婷,等.极弧系数组合优化的永磁电机齿槽转矩削弱方法[J].中国电机工程学报,2007,27(6):7-11. Yang Yubo,Wang Xiuhe,Ding Tingting,et al.Analysis of the optimization of the pole arc combination to reduce the cogging torque in PM motors[J].Proceedings of the CSEE,2007,27(6):7-11. [6] 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):22-25,61. Yang Yubo,Wang Xiuhe,Zhang Xin,et al.Cogging torque reduction method of magnet shifting in permanent magnet motors[J].Transactions of China Electrotechnical Society,2006,21(10):22-25,61. [7] 杨玉波,王秀和,丁婷婷.基于单一磁极宽度变化的内置式永磁同步电动机齿槽转矩削弱方法[J].电工技术学报,2009,24(7):41-45. Yang Yubo,Wang Xiuhe,Ding Tingting.Different pole-arc width combination for reducing cogging torque of interior-magnet PMSM[J].Transactions of China Electrotechnical Society,2009,24(7):41-45. [8] 王道涵,王秀和,丁婷婷,等.基于磁极不对称角度优化的内置式永磁无刷直流电动机齿槽转矩削弱方法[J].中国电机工程学报,2008,28(9):66-70. Wang Daohan,Wang Xiuhe,Ding Tingting,et al.Optimization for the asymmetric angles of magnetic pole to reduce cogging torque in inner-buried PM brushless DC motors[J].Proceedings of the CSEE,2008,28(9):66-70. [9] Zhu Z Q,Howe D.Influence of design parameters on cogging torque in permanent magnet machines[J].IEEE Transactions on Energy Conversion,2000,15(4):407-412. [10]王晓远,贾旭.基于槽口优化的电动汽车用大功率无刷直流电机齿槽转矩削弱方法[J].电工技术学报,2013,28(6):40-45. Wang Xiaoyuan,Jia Xu.Optimization for the slot opening to reduce cogging torque in high-power BLDC in electric vehicles[J].Transactions of China Electrotechnical Society,2013,28(6):40-45. [11]李辉,许艮,杨超,等.汽车天窗电机设计参数对齿槽转矩影响及优化[J].电机与控制学报,2012,16(1):18-22,30. Li Hui,Xu Gen,Yang Chao,et al.Influences of design parameters on cogging torque and optimization of low noise sunroof motor[J].Electric Machines and Control,2012,16(1):18-22,30. [12]Li J T,Liu Z J,Jabbar M A,et al.Design optimization for cogging torque minimization using response surface methodology[J].IEEE Transactions on Magnetics,2004,40(2):1176-1179. [13]Feng Haichao,Wang Xudong,Xu Xiaozhuo,et al.Optimization of asymmetric permanent magnetic synchronous motor for cogging torque minimization using finite element method[C]//International Conference on Electrical Machines and Systems,Wuhan,2008:3559-3563. [14]Islam J,Svechkarenko D,Chin R,et al.Cogging torque and vibration analysis of a direct-driven PM wind generator with concentrated and distributed windings[C]//2012 15th International Conference on Electrical Machines and Systems,Sapporo,2012:1-6. [15]Bianchini C,Immovilli F,Lorenzani E,et al.Review of design solutions for internal permanent-magnet machines cogging torque reduction[J].IEEE Transactions on Magnetics,2001,48(10):2685-2693. [16]杨玉波,王秀和,朱常青.电枢槽口宽度对内置式永磁同步电机齿槽转矩的影响[J].电机与控制学报,2011,15(7):21-25. Yang Yubo,Wang Xiuhe,Zhu Changqing.Effect of slot opening on the cogging torque of permanent magnet synchronous motor[J].Electric Machines and Control,2011,15(7):21-25. [17]Hwang S M,Eom J B,Jung Y H,et al.Various design techniques to reduce cogging torque by controlling energy variation in permanent magnet motors[J].IEEE Transactions on Magnetics,2001,37(4):2806-2809. [18]Jiang Xintong,Xing Jingwei,Li Yong,et al.Theoretical and simulation analysis of influences of stator tooth width on cogging torque of BLDC motors[J].IEEE Transactions on Magnetics,2009,45(10):4601-4604. [19]杨玉波,王秀和,陈谢杰,等.基于不等槽口宽配合的永磁电动机齿槽转矩削弱方法[J].电工技术学报,2005,20(3):40-44. Yang Yubo,Wang Xiuhe,Chen Xiejie,et al.A method for reducing cogging torque by different slot widths in permanent magnet motors[J].Transactions of China Electrotechnical Society,2005,20(3):40-44. [20]王秀和,丁婷婷,杨玉波,等.自起动永磁同步电动机齿槽转矩的研究[J].中国电机工程学报,2005,25(18):167-170. Wang Xiuhe,Ding Tingting,Yang Yubo,et al.Study of cogging torque in line-start permanent magnet synchronous motors[J].Proceedings of the CSEE,2005,25(18):167-170. [21]王道涵,王秀和.新型永磁型磁通切换型磁阻电机齿槽转矩机理分析和解析分析模型[J]. 电工技术学报,2015, 30(10):77-82. Wang Daohan,Wang Xiuhe. Preliminary study for mechanisms and analytical model of cogging torque in novel permanent magnetflux switching machine[J]. Transactions of China Electrotechnical Society,2015, 30(10):77-82.
2016, Vol. 31 
