基于磁热耦合法的非对称混合磁极永磁电机热分析  

Thermal analysis of asymmetric hybrid pole permanent magnet motor based on magneto-thermal coupling method

作　　者：史立伟[1] 刘政委 乔志伟 赵新 朱英杰 SHI Liwei;LIU Zhengwei;QIAO Zhiwei;ZHAO Xin;ZHU Yingjie(School of Transportation and Vehicle Engineering,Shandong University of Technology,Zibo 255000,China)

机构地区：[1]山东理工大学交通与车辆工程学院,山东淄博255000

出　　处：《浙江大学学报（工学版）》2024年第1期207-218,共12页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(51905066)。

摘　　要：针对传统内置永磁电机损耗高、发热量大的问题,提出非对称混合磁极永磁电机拓扑结构.介绍非对称混合磁极永磁电机的拓扑结构,对比分析两者的电磁特性与损耗分布特性.针对非对称混合磁极永磁电机分布式绕组的结构特点,对绕组进行等效处理,确定等效导热系数,建立集中参数热网络模型.建立单向磁热耦合模型,计算电机各部件的温度分布,验证了热网络模型的正确性.考虑到温度对永磁材料的影响,建立双向磁热耦合模型,对比分析不同电流密度对电机温升的影响规律.试制一台样机并搭建温升试验平台进行温升试验,验证了新型拓扑结构的有效性与合理性以及磁热双向耦合法计算结果的准确性.A topology of asymmetric hybrid pole permanent magnet motor(AHPPMM)was proposed for the problem of high loss and high heat generation of conventional interior permanent magnet motor.The topology of the asymmetric hybrid pole permanent magnet motor was introduced.The electromagnetic characteristics and loss distribution characteristics of the two were compared and analyzed.The equivalent thermal conductivity was determined based on the features of the distributed winding structure of the AHPPMM,and the lumped parameter thermal model was constructed.Then a unidirectional magneto-thermal coupling model was established to calculate the temperature distribution of each motor component and verify the correctness of the thermal network model.A bidirectional magneto-thermal coupling model was established by considering the temperature influence on the permanent magnet material in order to compare and analyze the influence law of different current densities on the motor temperature rise.A prototype was fabricated and a temperature rise experiment platform was constructed.The effectiveness and rationality of the new topology were verified.The accuracy of the calculation results of the bidirectional magneto-thermal coupling method was validated.

关 键 词：永磁电机 非对称混合磁极 热分析 磁热耦合 集中参数热模型 

分 类 号：TM351[电气工程—电机]