Abstract Electromagnetic analysis plays an important role in motor design. Especially, loss calculation during rated operation is the precondition of temperature field calculation of motor. It is also the key to confirm the motor design program. In this paper, a twelve-phase induction motor with skewed slot is presented. Through establishing the motor’s three-dimensional field-circuit coupled nonlinear finite element computation model based on T, ψ -ψ method, the magnetic field and loss are investigated. The electromagnetic characteristics of motor under rated operating conditions is obtained. Then the distribution of the magnetic density in key position is analyzed. The results show that tooth harmonics are significantly suppressed by skewed slot. The motor loss calculated by finite element method is compared by the experimental result, which verified the validity of three-dimensional finite element method.
Zhang Wen,Zheng Xiaoqin,Wu Xinzhen. Three-Dimensional Electromagnetic Analysis and Loss Calculation of Multiphase Induction Motors[J]. Transactions of China Electrotechnical Society, 2018, 33(zk2): 331-337.
[1] 刘自程, 李永东, 郑泽东. 多相电机控制驱动技术研究综述[J]. 电工技术学报, 2017, 32(24): 17-29. Liu Zicheng, Li Yongdong, Zheng Zedong.Control and drive techniques for multiphase machines: a review[J]. Transactions of China Electrotechnical Society, 2017, 32(24): 17-29. [2] 周长攀, 杨贵杰, 苏健勇, 等. 基于正常解耦变换的双三相永磁同步电机缺相容错控制策略[J]. 电工技术学报, 2017, 32(3): 86-96. Zhou Changpan, Yang Guijie, Su Jianyong, et al.The control strategy for dual three-phase PMSM based on normal decoupling transformation under fault condition due to open phases[J]. Proceedings of the CSEE, 2017, 32(3): 86-96. [3] 王东, 吴新振, 马伟明, 等. 非正弦供电十五相感应电机磁路计算方法[J]. 中国电机工程学报, 2009, 29(12): 58-64. Wang Dong, Wu Xinzhen, Ma Weiming, et al.Magnetic circuit calculation of fifteen-phase induction motor with non-sinusoidal supply[J]. Proceedings of the CSEE, 2009, 29(12): 58-64. [4] Simth A C, Williamson S, Hodge C G.High torque dense naval propulsion motors[C]//IEEE Inter- national Electric Machines and Drives Conference, Madison, WI, USA, 2003: 1421-1427. [5] 谢颖, 刘海松, 吕森, 等. 计及转子斜槽时笼型感应电机电磁振动变化规律的研究[J]. 中国电机工程学报, 2015, 35(15): 3948-3955. Xie Ying, Liu Haisong, Lü Sen, et al.Study on the variation laws of electromagnetic vibration con- sidered the skewed rotor in a squirrel-cage induction motor[J]. Proceedings of the CSEE, 2015, 35(15): 3948-3955. [6] 李伟力, 李金阳, 李丹. 变截面转子通风道对全空冷水轮发电机转子温度场和流体场的影响[J]. 电工技术学报, 2017, 31(增刊2): 42-49. Li Weili, Li Jinyang, Li Dan.Influence of variable section rotor ventilation ducts on temperature and fluid fields of a full air-cooled large hydro-generator rotor[J]. Transactions of China Electrotechnical Society, 2017, 31(S2): 42-49. [7] 陈丽香, 解志霖, 王雪斌. 低速大转矩永磁电机的转子散热问题[J]. 电工技术学报, 2017, 32(7): 40-48. Chen Lixiang, Xie Zhilin, Wang Xuebin.The rotor heat dissipation problem of low speed and high torque permanent magnet motor[J]. Transactions of China Electrotechnical Society, 2017, 32(7): 40-48. [8] Güdelhofer J, Gottkehaskamp R, Möckel A.3D FEM approach to study the physics of inter-bar currents in induction machines[C]//International Conference on Electrical Machines, Lausanne, Switzerland, 2016: 18-24. [9] Zhang Dongdong, Bu Lixiao, He Chengyuan, et al.A modified 2-D multislice FEM for computing the airgap flux density of induction motor with skewed slots[C]//IEEE International Electric Machines and Drives Conference, Miami, FL, USA, 2017: 1-8. [10] 赵海森, 刘晓芳, 罗应立, 等. 转子斜槽及不同槽斜度对鼠笼式感应电机损耗影响的时步有限元分析[J]. 中国科学(技术科学), 2011, 41(10): 1380-1387. Zhao Haisen, Liu Xiaofang, Luo Yingli, et al.Time stepping finite element analysis of rotor slot and slot inclination on squirrel cage induction motor losses[J]. China Science (Technical Science), 2011, 41(10): 1380-1387. [11] 鲍晓华, 狄冲, 汪朗. 笼型感应电机转子斜槽研究综述及展望[J]. 电工技术学报, 2016, 31(6): 1-12. Bao Xiaohua, Di Chong, Wang Lang.Review and prospect of skewed rotor in squirrel cage induction machines[J]. Transactions of China Electrotechnical Society, 2016, 31(6): 1-12. [12] Ergene L T, Salon S J.Determining the equivalent circuit parameters of canned solid-rotor induction motors[J]. IEEE Transactions on Magnetics, 2005, 41(7): 2281-2286. [13] 谢德馨, 姚缨英, 白保东, 等. 三维涡流场的有限元分析[M]. 北京: 机械工业出版社, 2001. [14] 邱关源. 电路[M]. 北京: 高等教育出版社, 2006: 52-81. [15] 梁振光, 唐任远. 大型变压器三维瞬态涡流场场路耦合模型[J]. 电工技术学报, 2003, 18(5): 17-22. Liang Zhenguang, Tang Renyuan.Coupled field- circuit model of 3D transient eddy current field for large transformers[J]. Transactions of China Electro- technical Society, 2003, 18(5): 17-22. [16] 陈世坤. 电机设计[M]. 北京: 机械工业出版社, 2008. [17] 王庆山, 梁艳萍. 定子斜槽高压感应电动机三维磁场与运行性能分析[J]. 哈尔滨理工大学学报, 2017, 22(3): 85-89. Wang Qingshan, Liang Yanping.Analysis of operating performance and three dimensional magnetic field of high voltage induction motors with stator chute[J]. Journal of Harbin University of Science and Technology, 2017, 22(3): 85-89. [18] 赵海森. 超高效感应电机损耗模型及降耗措施研究[D]. 北京: 华北电力大学, 2011.
2018, Vol. 33 
