基于Super-twisting算法的永磁同步电机直接转矩控制  

Permanent magnet synchronous motor direct torque control based on Super-twisting algorithm

作　　者：李少朋 谢源[1] 张凯 贺耀庭 Li Shaopeng;Xie Yuan;Zhang Kai;He Yaoting(School of Electrical Engineering,Shanghai DianJi University,Shanghai 201306,China)

机构地区：[1]上海电机学院电气学院,上海201306

出　　处：《可再生能源》2021年第7期963-968,共6页Renewable Energy Resources

基　　金：国家自然科学基金项目(61374136);上海市科学技术委员会科研项目(17DZ1201200)。

摘　　要：针对传统永磁同步电机直接转矩控制中转矩和磁链脉动较大的问题,文章基于Super-twisting算法,提出了一种二阶滑模直接转矩控制策略。该控制策略使用二阶滑模控制结构取代传统PI控制和滞环控制结构,设计了磁链和转矩滑模控制器,提高了系统控制的动态响应能力。文章使用SVPWM矢量控制取代传统DTC中的开关表,保持开关频率恒定。试验结果表明,文章提出的控制策略可以有效降低转矩和磁链的脉动,并提高系统的稳定性,改善了系统的动态性能。In order to solve the problem of large torque and flux ripple in traditional Permanent Magnet Synchronous Motor Direct Torque Control(PMSM-DTC),a second-order sliding mode DTC strategy based on Super-twisting Algorithm is proposed.In this strategy,the traditional PI control and hysteresis control is replaced by the second-order sliding mode control structure,as well as the flux and torque sliding mode controller is designed to improve the dynamic response of the system.With SVPWM vector control,the switch table in traditional DTC is substituted to keep the switching frequency constant.The experimental results show that the proposed control strategy can reduce the fluctuation of the torque and flux effectively and improve the stability and the dynamic performance of the system.

关 键 词：永磁同步电机 Super-twisting算法 滑模控制 SVPWM矢量控制 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]