车用轮毂电动机直接转矩控制特性建模  

Direct torque control characteristic modeling of in-wheel motor

作　　者：颜伏伍[1] 张佩[1] 杜常清[1] 

机构地区：[1]武汉理工大学现代汽车零部件技术湖北省重点实验室,湖北武汉430070

出　　处：《江苏大学学报（自然科学版）》2011年第3期272-276,共5页Journal of Jiangsu University：Natural Science Edition

基　　金：国家"863"计划项目(2005AA501220-3)

摘　　要：以某型号车用轮毂电动机为研究对象,针对矢量控制存在的转矩响应慢、动态性能不佳等问题,提出了轮毂电动机直接转矩控制方法.在分析轮毂电动机直接转矩控制数学模型的基础上,利用Matlab/Simulink仿真软件建立了轮毂电动机直接转矩控制仿真模型,进行了轮毂电动机动态性能仿真分析.设计了基于实时仿真系统dSPACE的轮毂电动机试验台架,在所设计的电动机试验台架上对轮毂电动机的性能特性进行了测试.结果表明:直接转矩控制的转矩响应迅速,仅在低速时转矩脉动较大;所建电动机模型是正确的,能较好地反映电动机的动态性能;直接转矩控制的动态性能良好,能满足电动汽车对驱动系统控制的要求.Using in-wheel motor as concrete study subject, the direct torque control （DTC） was proposed to overcome the disadvantages of slow torque response and poor dynamic performance for vector control. Based on the DTC mathematical model of asynchronous motor, in-wheel motor DTC simulation model was established by Matlab/Simulink software. The dynamic performance of in-wheel motor was analyzed through simulation model. Based on dSPACE, in-wheel motor test stand was designed. A performance test for inwheel motor was conducted on the test stand. The simulation and test results show that the torque response of DTC is fast and torque ripple is large only at low speed. The simulation model is suitable to express the dynamic performance of in-wheel motor well. The dynamic performance of DTC can meet the requirement of driving system.

关 键 词：轮毂电动机 数学模型 直接转矩控制 仿真 动态性能 

分 类 号：TM343.2[电气工程—电机]