永磁同步电机的自适应Super-Twisting滑模直接转矩控制  

Adaptive Super-Twisting Sliding Mode Direct Torque Control for Permanent Magnet Synchronous Motor

作　　者：李运德 刘政 LI Yunde;LIU Zheng(School of Electronic Information and Automation,Guilin University of Aerospace Technology,Guilin 541004,China)

机构地区：[1]桂林航天工业学院电子信息与自动化学院,桂林541004

出　　处：《组合机床与自动化加工技术》2024年第7期89-92,97,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金项目(62263009);广西高校中青年教师科研项目(2022KY0791);桂林航天工业学院校级基金项目(XJ21KT19)。

摘　　要：针对永磁同步电动机直接转矩控制存在超调和转矩脉动大的问题,提出一种自适应的Super-Twisting滑模控制策略。首先,采用Super-Twisting滑模控制代替传统的滞环比较控制方式,来设计磁链控制器和转矩控制器;其次,在Super-Twisting滑模控制的基础上作出进一步改进,利用双曲正切函数取代符号函数,并在Super-Twisting滑模控制中的连续部分引入一个自适应因子,构成新的自适应Super-Twisting滑模控制策略;最后,使用MATLAB/Simulink软件搭建模型,对永磁同步电动机直接转矩控制系统进行仿真实验。结果表明,提出的改进Super-Twisting滑模控制器,在不同实验条件下的直接转矩控制系统中实现了无超调控制,转矩脉动值仅为0.2 N·m,减小了约39%。In view of the problems of overshoot and large torque ripple in direct torque control of permanent magnet synchronous motor,an adaptive Super-Twisting sliding mode control strategy is proposed.Firstly,the Super-Twisting sliding mode control is used to replace the traditional hysteresis comparison control method to design the flux controller and torque controller.Secondly,building upon the foundation of Super-Twisting sliding mode control,further improvements are made by replacing the sign function with a hyperbolic tangent function and introducing an adaptive factor into the continuous part of the Super-Twisting sliding mode control,resulting in a new adaptive Super-Twisting sliding mode control strategy.Finally,a model is built using MATLAB/Simulink software to conduct simulation experiments on the direct torque control system of permanent magnet synchronous motor.The results show that the proposed improved Super-Twisting sliding mode controller could achieve zero overshoot control in the direct torque control system under various experimental conditions,with a torque ripple value of only 0.2 N·m,representing a reduction of approximately 39%.

关 键 词：永磁同步电动机 滑模控制 直接转矩控制 控制器 

分 类 号：TH165[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]