基于滑模变结构的异步电机直接转矩控制研究  

Research on the Asynchronous Motor Direct Torque Control Based on the Sliding Mode Variable Structure

作　　者：王磊[1] 王京[1] 张勇军[1] 

机构地区：[1]北京科技大学高效轧制国家工程研究中心,北京100083

出　　处：《电力电子技术》2010年第1期44-45,51,共3页Power Electronics

基　　金：国家"211工程"资助项目(010301)~~

摘　　要：根据异步电机在同步旋转坐标系下的数学模型和滑模变结构理论设计了一种基于转矩误差和磁链误差的滑模控制器,利用获得的参考电压矢量,通过空间电压矢量调制得到逆变器开关控制信号。仿真研究验证了该控制策略在减小转矩和磁链脉动,保证逆变器开关频率恒定的同时,对系统参数摄动和外部干扰表现出较强的鲁棒性。在此基础上,实际应用于基于VxWorks嵌入式系统的变频调速系统平台,取得了良好的控制效果。According to the mathematical models of induction motor in synchronous rotation coordinates and control theory of sliding mode variable structure,a new variable structure sliding（VSS）mode controller based on torque and flux errors is proposed.Using the reference voltage vectors which are the outputs of the controller,the switching control signals of the inverter are generated by space vector modulation technology.The simulation research verifies that the proposed control scheme significantly reduces torque and flux ripple,ensures the inverter switching frequency to be fixed,and it also has strong robust to motor parameter and disturbance.Then,the algorithm is applied on a system which base on VxWorks embedded operationg system,through actual operation,a good result is achieved.

关 键 词：异步电机 滑模控制 直接转矩控制 空间电压矢量调制 嵌入式系统 

分 类 号：TM343[电气工程—电机]