采用多层滞环控制器的电机直接转矩控制仿真

Simulation of Motor Direct Torque Control with Multilayer Stagnant Ring Comparator

介绍异步电机直接转矩控制基本原理及主要组成模块,对传统的定子磁链滞环比较器和开关状态表进行了改进,采用多层滞环控制器,采用斩波矢量代替反向电压矢量,采用圆形磁链轨迹控制方法.使用MATLAB7.7建立异步电动机直接转矩控制仿真模型,并进行仿真实验.其仿真结果表明该控制模型的可行性和正确性.

The research introduced the basic principles of Motor Direct Torque Control and main components,and improved the traditional flux comparators and switch status table with multilayer stagnant ring comparator as well as using chopped vector instead of the reverse voltage vector and using a circular flux trajectory control method.Induction motor direct torque control simulation models was constructed with MATLAB 7.7.Simulation results show that the control model is feasible and correct.