电动汽车非对称混合磁极永磁电机优化与分析  

Optimization and analysis of asymmetrical hybrid permanent magnetmotor for electric vehicle

作　　者：刘楷文 史立伟[1] 王文强 刘政委 李法成 LIU Kaiwen;SHI Liwei;WANG Wenqiang;LIU Zhengwei;LI Facheng(National and Local Joint Engineering Research Center of Intelligent Power Integration Technology for Electric Vehicles,Shandong University of Technology,Zibo,Shandong 255049,China)

机构地区：[1]山东理工大学电动汽车智能化动力集成技术国家地方联合工程研究中心,山东淄博255049

出　　处：《河北科技大学学报》2022年第4期355-364,共10页Journal of Hebei University of Science and Technology

基　　金：国家自然科学基金(51975340,51875327)。

摘　　要：针对传统稀土永磁电机稀土材料用量大、齿槽转矩过高等问题,提出了一种非对称混合磁极永磁电机结构。首先,建立等效磁路模型;其次,对电机进行参数化建模,选取铁氧体宽度等电机参数进行灵敏度分析,根据灵敏度结果,分别采用BBD算法与MOGA-Ⅱ法相结合的混合算法和CCD多目标算法优化;最后,确定电机的最优尺寸参数,分析比较非对称混合磁极永磁电机与传统V型电机的电磁性能。结果表明,相较于传统V型结构电机,非对称混合磁极永磁电机的转矩脉动与齿槽转矩分别降低14%和71%,且钕铁硼材料使用量减少14.3%。因此,所提出的新型电动汽车非对称混合磁极永磁电机结构有效解决了稀土材料用量大、齿槽转矩过高等问题,为汽车用永磁电机提供了一定的理论参考。Aiming at the problems of large amount of rare earth materials and too high cogging torque of traditional rare earth permanent magnet motor, an asymmetrical hybrid magnetic pole permanent magnet motor structure was proposed.The equivalent magnetic circuit model was established, parametric modeling was carried out for the motor, and ferrite width and other motor parameters were selected for sensitivity analysis.According to sensitivity results, the hybrid algorithm combining the BBD algorithm and the MOGA-Ⅱ method and the CCD multi-objective algorithm were used for optimization, so as to determine the optimal size parameters of the motor, and analyze and compare the electromagnetic performance of the asymmetric hybrid permanent magnet motor and the traditonal V-type motor.The results show that compared with the traditional V-type motor, the torque ripple and cogging torque of the asymmetrical hybrid permanent magnet motor are reduced by 14% and 71%,respectively, and the amount of Ndfeb material used is reduced by 14.3%.The proposed new type of asymmetric hybrid permanent magnet motor for electric vehicles effectively solves the problems such as large amount of rare earth materials and too high cogging torque, which provides a certain theoretical reference for automobile permanent magnet motor.

关 键 词：电机学 永磁电机 齿槽转矩 混合磁极 非对称 

分 类 号：TM351[电气工程—电机]