基于五段式SVPWM的永磁同步电机反馈线性化直接转矩控制  

Feedback Linearization Direct Torque Control of Permanent Magnet Synchronous Motor Based on the Five-stage SVPWM

作　　者：邱赫男[1] 王旭东[1] 李志伟[1] 那日沙[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150080

出　　处：《哈尔滨理工大学学报》2015年第6期65-70,共6页Journal of Harbin University of Science and Technology

基　　金：国家自然科学基金(5177031)

摘　　要：针对永磁同步电机(PMSM)直接转矩控制系统存在转矩和磁链脉动较大的问题,引入反馈线性化理论,结合空间矢量脉宽调制技术(SVPWM),提出了使原系统实现输入输出线性化控制的改进方法.首先分析了控制系统实现反馈线性化的条件,给出了线性化系统控制模型,采用五段式SVPWM的控制算法,最后与传统直接转矩控制系统进行了仿真对比.结果表明,基于SVPWM的永磁同步电机反馈线性化直接转矩控制系统显著抑制了转矩和磁链的脉动,并且具有理想的动静态性能.Aiming at the problem that the direct torque control of permanent magnet synchronous motor（ PMSM） has larger pulsation on torque and flux,this paper introduces the theory of feedback linearization,combining with the space vector pulse width modulation（ SVPWM） technology,an improved method is proposed which will enable the original system to realize input-output linearization control. The analysis of conditions of the control system to realize feedback linearization is conducted and the control model of the system is given at the very beginning. The paper uses the five-stage SVPWM control algorithm. This control method and the traditional direct torque control system are contrasted under the simulation. The results show that the design based on feedback linearization of permanent magnet synchronous motor direct torque control system obviously restrains the pulsation on torque and flux,and it has ideal dynamic and static performance.

关 键 词：永磁同步电机 直接转矩控制 反馈线性化 SVPWM 

分 类 号：TM341[电气工程—电机]