一种改进型PMSM弱磁控制策略的研究  

Research on Improved Flux Weakening Control Strategy of PMSM

作　　者：赵钢[1] 朱奥辞 张世忠 ZHAO Gang;ZHU Aoci;ZHANG Shizhong(Tianjin Key Laboratory of Control Theory & Applications in Complicated System,Tianjin University of Technology,Tianjin 300384,China)

机构地区：[1]天津理工大学天津市复杂控制理论与应用重点实验室

出　　处：《电气传动》2019年第8期11-16,共6页Electric Drive

基　　金：国家重点研发计划资助(2017YFB0102500)

摘　　要：PMSM是一个非线性、强耦合的多变量系统,控制系统易受到外界扰动或电机内部参数发生变化的影响。在分析传统PI控制器弱磁方案的基础上,将模糊智能控制理论和简化的SVPWM过调制算法引入到永磁同步电机弱磁控制系统中,实现了逆变器全范围电压的输出,提高了系统的稳定性和抗干扰能力。针对传统的直接把负向直轴电流叠加到直轴上的弱磁控制策略引起的交轴电流变化滞后于直轴电流变化的缺点,提出采用电流超前角的弱磁控制方式来保持直轴电流和交轴电流同时变化,保持电流轨迹平整。最后,通过仿真分析和实验分析验证了系统算法的有效性。PMSM is a nonlinear and strongly coupled multivariable system. The control system is easily influenced by external disturbances or changes in the internal parameters of the motor. Based on the analysis of the flux weakening scheme of the traditional PI controller,the PMSM combined the fuzzy intelligent control theory with the simplified SVPWM overmodulation algorithm was introduced into the flux weakening control system of permanent magnet synchronous motor to realize the output of the full range inverter voltage and improve the stability and antiinterference ability of the system. Aiming at the shortcoming that the quadrature axis current lags behind that of the direct current by adding the negative direct current to the direct axis,the weak magnetic control method was proposed to keep the direct current and the quadrature axis current change at the same time,keeping the current track flat. Finally,the effectiveness of the system algorithm was verified by simulation analysis and experimental analysis.

关 键 词：永磁同步电机 模糊PI 超前角弱磁控制 过调制 

分 类 号：TM341[电气工程—电机]