基于模糊PI永磁同步电机优化矢量控制系统的研究  

Study of Permanent Magnet Synchronous Motors Optimized Vector Control System Based on Fuzzy PI Controller

作　　者：樊英杰[1] 张开如[1] 马慧[1] 韩璐[1] 狄东照 

机构地区：[1]山东科技大学电气与自动化工程学院,山东青岛266590

出　　处：《电气传动》2016年第3期15-19,共5页Electric Drive

摘　　要：介绍了永磁同步电机(PMSM)的数学模型和基本原理。针对PMSM中传统PI控制器参数固定、无法兼顾静态性能和动态性能的缺陷性,在传统双闭环控制策略的基础上,将速度外环采用模糊PI控制器,在线调整PI控制器的2个参数,增强系统的鲁棒性。逆变器环节采用优化SVPWM算法,该方法利用电压空间矢量旋转的幅角来判断扇区,并由三相电压的电压差值计算基本电压矢量的作用时间,与传统SVPWM相比简化了矢量算法步骤。仿真结果和小波分析表明,模糊PI优化矢量控制系统与传统PI矢量控制系统相比具有更好的动态稳定性和抗干扰能力。The mathematical model and the basic principle of permanent magnet synchronous motors werepresented. Focusing on the defects of traditional PI controller of PMSM-fixed parameter making it unable to satisfy bothstatic and dynamic performance,based on the traditional double-closed loop strategy,proposed to employ fuzzy PIcontroller for outer speed loop,which could adjust two parameters of PI controller on line and improve the robustness.An optimized SVPWM was applied to inverter,by which the sector could be judged according to the rotating argumentof voltage space vector,and the function time of basic voltage vector could be calculated based on the 3 phase voltagedifference computation and the algorithm steps were more simplified compared with the conventional SVPWM. Thesimulation results and wavelet analysis show that the fuzzy PI optimized vector system is superior the conventional PIvector control system in dynamic stability and anti-interference performance.

关 键 词：永磁同步电机 速度外环 模糊PI控制 逆变器 优化SVPWM 小波分析 

分 类 号：TM341[电气工程—电机]