车用永磁同步电机高性能弱磁控制策略  

Flux-weakening Control Strategy for Permanent Magnet Synchronous Motor Used in Electric Vehicles with High Performance

作　　者：章回炫 范涛 宁圃奇[1,2] 国敬 温旭辉[1,2] ZHANG Huixuan;FAN Tao;NING Puqi;GUO Jing;WEN Xuhui(University of Chinese Academy of Sciences,Beijing 100049,China;Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国科学院大学,北京100049 [2]中国科学院电工研究所,北京100190

出　　处：《电源学报》2024年第2期378-385,共8页Journal of Power Supply

基　　金：中国科学院战略先导资助项目(XDA28040100)。

摘　　要：提出一种基于电流预测的车用永磁同步电机弱磁控制方法,以提升永磁同步电机弱磁区的动态性能。详细分析了弱磁区的电压边界问题,以及不同电压选取规则下的稳定性问题。在此基础上,提出了一种考虑稳定性和动态特性的动态过调制策略。此外,研究了基于参数模型的电流预测控制算法,该算法具有快速动态响应和可控约束的优点,在保证稳定性的基础上可有效提升电机弱磁区域动态性能。最后,分别在仿真和实验平台上证明了所提算法的有效性。A flux-weakening control method for permanent magnet synchronous motor(PMSM)used in electric vehicles is put forward on the basis of current prediction to improve the dynamic performance in the flux-weakening region of PMSM.The voltage boundary problem in the flux-weakening region is analyzed in detail,and the stability problem under different voltage selection criteria is also introduced.On this basis,a dynamic overmodulation strategy considering the stability and dynamic characteristics is proposed.Furthermore,a model-based predictive current control algorithm is investigated,in which the advantages of fast dynamic response and manageable constraints help to improve the dynamic performance in the flux-weakening region while guaranteeing the stability.Finally,the effectiveness of the proposed algorithm was verified on a simulation platform and an experimental platform,respectively.

关 键 词：永磁同步电机 弱磁控制 动态过调制 预测控制 

分 类 号：TM351[电气工程—电机]