并轴式双转子永磁同步电机齿槽转矩分析  

Cogging torque analysis of parallel shaft double rotor permanent magnet synchronous motor

作　　者：戈宝军[1] 姜汉 林鹏[1] 陶大军[1] GE Baojun;JIANG Han;LIN Peng;TAO Dajun(National Engineering Research Center of Large Electric Machines and Heat Transfer Technology,Harbin University of Science and Technology,Harbin 150080,China)

机构地区：[1]哈尔滨理工大学大型电机电气与传热技术国家地方联合工程研究中心,黑龙江哈尔滨150080

出　　处：《电机与控制学报》2023年第8期80-90,共11页Electric Machines and Control

基　　金：国家自然科学基金(51907042);黑龙江省教育厅省属高校科技成果研发、培育项目(TSTAU-R2018004)。

摘　　要：为有效分析和削弱并轴式双转子永磁同步电机的齿槽转矩,首先给出并轴式双转子永磁同步电机并接区气隙尺寸确定的一般原则,其次在计及并接区特殊结构参数的情况下给出各部分等效磁导的计算公式,进而建立并轴式双转子永磁同步电机等效磁网络模型,并通过能量差分法建立该电机齿槽转矩的解析表达式,然后以一台双8极54槽并轴式双转子永磁同步电机为例,建立其2D有限元计算模型,综合分析电机并接区气隙、永磁体、槽口宽度等不同结构的尺寸参数对齿槽转矩的影响,得到削弱并轴式双转子永磁同步电机齿槽转矩的有效方法,最后使用田口法以电机齿槽转矩为优化目标,以并接区气隙尺寸、永磁体尺寸、定子槽口宽度等不同参数作为优化变量进行优化分析,有效提高电机的性能。In order to effectively analyze and weaken the cogging torque of the parallel shaft double rotor permanent magnet synchronous motor,the general principle for determining the air gap size in the parallel connection area of the parallel shaft double rotor permanent magnet synchronous motor was first given.Secondly,the calculation formula for the equivalent magnetic permeability of each part was given,taking into account the special structural parameters of the parallel connection area.Furthermore,an equivalent magnetic network model of the parallel shaft double rotor permanent magnet synchronous motor was established.The analytical expression of the cogging torque of the motor was established by the energy difference method.Then,taking a double 8-pole 54 slot parallel shaft dual rotor permanent magnet synchronous motor as an example,its 2D FEM calculation model was established.The impact of the size parameters of different structures such as the air gap,permanent magnet,slot width,etc.in the motor parallel connection area on the cogging torque was comprehensively analyzed,and an effective method to weaken the cogging torque of the parallel shaft double rotor permanent magnet synchronous motor was obtained,Finally,the Taguchi method was used to optimize the motor slot torque,and different parameters such as the air gap size in the parallel connection area,permanent magnet size,and stator slot width were used as optimization variables for analysis,effectively improving the performance of the motor.

关 键 词：并轴式双转子 永磁同步电机 等效磁网络 等效磁导 齿槽转矩 田口法 

分 类 号：TM351[电气工程—电机]