基于场路耦合模型的内置式永磁同步电机损耗研究  

Study on Loss of Interior Permanent Magnet Synchronous Motor Based on Field-Circuit Coupling Model

作　　者：付龙 李晓华 FU Long;LI Xiaohua(School of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力大学电气工程学院,上海200090

出　　处：《上海电力大学学报》2025年第2期172-181,共10页Journal of Shanghai University of Electric Power

基　　金：上海市科学技术委员会科研计划项目(23DZ1201900)。

摘　　要：对内置式永磁同步电机(IPMSM)在逆变器不同开关频率、不同调制比等参数下定转子铁心损耗、永磁体涡流损耗、磁滞损耗大小以及电机各部件温度分布规律进行了研究。首先,搭建了两种不同永磁体结构(“V”型和“一”型)的12槽8极IPMSM场路耦合联合仿真模型,比较了两种电机在不同变频器参数下损耗的变化规律;然后,依据磁热耦合原理,搭建了两种电机的三维有限元模型,研究了两种电机分别在正弦波电压和变频器供电下定子铁心、永磁体和绕组的温度分布;最后,基于电机损耗和温度场分析,得出了考虑磁极结构的IPMSM在变频器供电时电机损耗和温度分布的一般变化规律。这为电机在变频器驱动下的损耗研究提供了理论依据。The rotor core loss,eddy current loss of permanent magnet,hysteresis loss and the temperature distribution of each motor component of the interior permanent magnet synchronous motor(IPMSM)under different switching frequency and modulation ratio of inverter are studied in this paper.First,two kinds of 12-slot 8-pole IPMSM electric field coupling simulation models are set up in this paper.The variation of the loss of two motors under different frequency converter parameters is compared.Then based on the principle of magnetothermal coupling,the three-dimensional finite element model of two motors is established,and the temperature distribution of stator core,permanent magnet and winding of two motors is studied respectively under sine wave and inverter power supply.Finally,based on the analysis of the motor loss and temperature field,the general change law of the motor loss and temperature distribution of the IPMSM considering the magnetic pole structure under the inverter power supply is obtained,which provides a theoretical basis for the study of the motor loss under the inverter drive.

关 键 词：内置式永磁同步电机 场路耦合 电机损耗 磁热耦合 温度分布 

分 类 号：TM351[电气工程—电机]