电动汽车用内置式永磁同步电动机精确转矩控制方法  

Precise Torque Control Method of IPMSM in Vehicle

作　　者：朱元[1] 武四辈[2] 吴志红[1] 陆科[1] 

机构地区：[1]同济大学中德学院,上海201804 [2]同济大学汽车学院,上海201804

出　　处：《农业机械学报》2014年第1期8-13,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家高技术研究发展计划(863计划)资助项目(2011AA11A290)

摘　　要：提出一种基于转矩观测器的电动汽车内置式永磁同步电动机精确转矩闭环控制方法。通过内置式永磁同步电动机数学模型的建立,分析了基于Popov超稳定理论的模型参考自适应参数辨识方法,为了提高系统的响应速度,提出和采用了极点配置法。研究了自适应模型控制参数对MRAI系统响应时间的影响,并进行了验证和理论分析。仿真和实验结果表明辨识出的永磁体磁通和定子电阻较为准确,转矩观测器可以根据辨识出的永磁体磁通对实际的转矩进行估算,以此和转矩命令值构成转矩闭环控制,从而在永磁体磁通发生变化时提高驱动系统的转矩控制精度,改善电动汽车驱动系统的性能。A precise torque closed-loop control method based on torque estimator for interior permanent magnet synchronous motor （IPMSM） was presented to improve the torque precision. MRAI （Model Reference Adaptive Identification） method of the IPMSM, which is based on the theory of Popov stability, was derived and analyzed. In order to improve the response speed of the system, the method of pole placement is was proposed and adopted. The effect of the adaptive model＇ s control parameters on MRAI＇ s system response speed was researched. The validation and theoretical analysis were carried out in this study. The simulation and experimental results show that the permanent magnet flux and the stator resistance could be identified accurately; the actual torque can be estimated by torque observer according to the result of parameter identification. So base on this and the torque command, the torque closed-loop control system was built the torque command. Therefore, the torque control precision of the driving system could he improved even the permanent magnet flux is changed, at the same time, the driving performance of EV is fulfilled and guaranteed.

关 键 词：电动汽车 内置式永磁同步电动机模型参考自适应辨识极点配置 转矩闭环控制 

分 类 号：U469.72[机械工程—车辆工程] TM351[交通运输工程—载运工具运用工程]