摘要
为了满足电动汽车对永磁驱动电机要求功率密度高、调速范围广的性能需求,以一台商务车用60 kW永磁同步电机的电磁结构优化为例,首先通过电磁设计理论研究分析了影响永磁调速电机过载能力、调速范围的因素,并利用有限元电磁场计算软件建立电机的有限元模型,计算并分析不同磁路结构中电机的d、q轴电感、凸极率、弱磁率等因素对其性能的影响,进而对电机的定、转子冲片的拓扑结构进行优化。最后,制造了实验样机,并搭建了电机控制系统的实验平台,试验测试了样机在不同工况下的性能,并与仿真结果进行了对比,验证了有限元设计的准确性和可行性,为电动汽车用电机的结构参数优化提供了参考方向。
In order to meet requirements of high power density and wide speed range for the interior permanent magnet synchronous motor (IPMSM) of electric vehicles (EVs), the design requirements of the drive motor for EVs was analyzed by taking a 60kW IPMSM as an example. And the factors that affect the overload capacity and speed range of IPMSM were also analyzed by theoretical research. Then, the influence of d, q axis inductances, saliency ratio and field-weakening magnetic rate on the motor performance under different topology structures was calculated and compared by the 2D FEM model. Furthermore, the topological structures of stator and rotor were optimized. Results show that V-shape IPMSM has advantages of high overload capacity and wide speed range and is applicable to EVs.
作者
宋腾飞
刘慧娟
张振洋
刘威
SONG Teng-fei;LIU Hui-juan;ZHANG Zhen-yang;LIU Wei(School of Electric and Engineering, Beijing Jiaotong University, Beijing 100044, China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2019年第6期44-53,共10页
Electric Machines and Control
基金
中央高校基本科研业务费专项资金项目(2018YJS161)
关键词
内置式永磁电机
电动汽车
弱磁能力
过载能力
调速范围
interior permanent magnet synchronous motor
electric vehicles
flux-weakening
overload capacity
speed range
