永磁同步轮毂电机设计与电磁特性分析  

Design and Electromagnetic Characteristics Analysis of Permanent Magnet Synchronous In-wheel Motor

作　　者：石拓 周盼 孔志豪 辛江慧 许丽娇 臧利国 Shi Tuo;Zhou Pan;Kong Zhihao;Xin Jianghui;Xu Lijiao;Zang Liguo(Automobile and Rail Transit College,Nanjing Institute of Technology,Nanjing 211167,China)

机构地区：[1]南京工程学院汽车与轨道交通学院,南京211167

出　　处：《机电工程技术》2023年第6期192-196,共5页Mechanical & Electrical Engineering Technology

基　　金：江苏省研究生实践创新计划(SJCX22_1048)。

摘　　要：为进一步探究轮毂电机的电磁特性,使汽车获得更高的输出转矩,针对具体车型轮毂电机进行设计与研究。根据某型车的动力性能要求对轮毂电机的尺寸参数进行计算与设计,并对轮毂电机进行三维建模。利用Maxwell建立电机的数学模型,并通过槽满率和磁场强度的分布规律验证模型可靠性。通过仿真分析所设计的永磁同步电机在空载和负载2种工况下的气隙磁通密度和反电动势,对比分析不同槽口宽度对电磁转矩的影响。结果表明:所设计的电机在额定工况下的最大转矩为123.918 N⋅m,最小转矩为115.9696 N⋅m,可以满足该型车的设计使用要求;当电机槽口宽度为5 mm时,可以获得最稳定的输出转矩和最符合该车的动力性能。研究结果为优化汽车轮毂电机的电磁特性和提升整车动力性提供了参考。In order to further explore the electromagnetic characteristics of the in-wheel motor so as to obtain higher output torque,in-wheel motor for specific vehicle is designed and studied.According to the dynamic performance requirements of specific vehicle,the size parameters of the in-wheel motor are calculated and designed,and the three-dimensional model of the in-wheel motor is constructed.The mathematical model of the motor is established by using Maxwell,and the reliability is verified through the distribution of the magnetic field intensity.The air-gap magnetic flux density and back EMF of the designed permanent magnet synchronous motor during unloading and loading conditions are analyzed respectively through simulation,and the influence of different slot widths on cogging torque is compared and analyzed.The results show that the designed motor has a maximum torque of 123.918 N×m and a minimum torque of 115.9696 N×m under rated conditions,which can meet the design and use requirements of a certain type of vehicle;when the width of the motor notch is about 5 mm,the most stable output torque and the best dynamic performance of the car can be obtained.The research results provide reference for optimizing the electromagnetic characteristics of automotive in-wheel motors and improving the dynamic characteristics of the vehicle.

关 键 词：永磁同步电机 轮毂电机 电磁分析 气隙磁通密度 反电动势 电磁转矩 

分 类 号：TM301.4[电气工程—电机]