一种大转矩外转子永磁轮毂电机驱动特性分析  

Analysis on Drive Characteristics of a High Torque Outer Rotor Permanent Magnet In-Wheel Motor

作　　者：史黎明[1] 陈江岸 王培龙[1,2] 张志华 李耀华[1] SHI Liming;CHEN Jiangan;WANG Peilong;ZHANG Zhihua;LI Yaohua(Key Laboratory of Power Electronics and Electric Drive,Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;Weihai Guangtai Airport Equipment Co.,Ltd.,Weihai 264200,China)

机构地区：[1]中国科学院电力电子与电气驱动重点实验室,中国科学院电工研究所,北京100190 [2]中国科学院大学,北京100049 [3]威海广泰空港设备股份有限公司,山东威海264200

出　　处：《电机与控制应用》2018年第11期39-44,82,共7页Electric machines & control application

摘　　要：提出一种大转矩外转子永磁轮毂电机,可用于纯电动机场摆渡车、机场大巴车、公交大巴车等。合理设计电机外转子的永磁磁极倾斜角,使电机相反电动势为只含有3次谐波的梯形波,线反电动势为正弦波,同时不降低电机的输出转矩。分析比较了采用不同矫顽力的磁钢对相反电动势的影响,兼顾转矩输出能力和电机调速范围后,选择了拥有合理矫顽力的永久磁钢。同时,搭建了基于Simplorer-Maxwell软件的场路联合仿真平台,比较、分析了基于正弦波磁场定向控制策略和基于方波控制策略的电机驱动特性。虽然两种方法都能实现转矩控制,但磁场定向控制策略的转矩波动更小。A new large power and high torque outer rotor in-wheel motor was presented,which was used for electric airport shuttle bus,airport bus,bus,etc.By optimizing the pole arc coefficient and pole skew of the permanent magnet,the phase back electromotive force(EMF)was trapezoidal wave that contained mainly 3rd harmonics,line back EMF was sinusoidal wave,and the output torque of the motor was improved.The effects of permanent magnet with different coercivity on the electromotive force were compared and analyzed.Considering the torque output and adjustment range of motor speed,reasonable coercivity was applied.Besides,the field-circuit coupling simulation platform was built based on Simplorer-Maxwell software,and drive characteristics of motor controlled by field oriented vector control and square wave control were compared.Although both control strategies were applicable for this type of motor,the field oriented vector control showed better performance with less torque ripple.

关 键 词：外转子轮毂电机 谐波 驱动特性 场路联合仿真 场定向矢量控制 方波 

分 类 号：TM301.2[电气工程—电机]