基于Simulink的三相异步电动机直接转矩控制仿真

基于三相异步电动机定子α-β坐标,利用Simulink构建了三相异步电动机的直接转矩控制方案,并利用S函数对异步电动机进行建模。该文给出了定子扇区划分与选择的原则,在电压矢量选择方面采用两电平输出的转矩和磁链调节器代替传统常用的三电平的转矩和磁链调节器,简化了二维表设计。仿真结果证明了该设计方案的正确性和有效性。

Simulation on Direct Torque Control of Three-phase Asynchronous Motor Based on Simulink

In this paper,three-phase asynchronous motor DTC（direct torque control） system is built by the use of Simulink,and the motor model in the system which is based on three-phase asynchronous motor statorα-β coordinates is designed by S-function. The way by S-function simplifies the model design. Besides,the stator sector classification and selection principle is proposed in this paper. Instead of using a commonly used three level traditional torque regulator and magnetic linkage regulator to finish the voltage vector selection,the proposed method directly uses the two level output one. Finally,the paper presents detailed simulation results,which prove the correctness and effectiveness of the proposed methods.