直接转矩控制系统的建模仿真研究

Research on Modeling and Simulation of Direct Torque Control System

运用Matlab/Simulink建立了异步电动机的两种磁链控制模式的直接转矩控制(DTC)系统仿真模型:六边形磁链控制方法和近似圆形磁链控制方法 DTC,并进行了结果分析和对比研究。在上述基础上,通过两种控制模型的结合和平滑切换,建立全速度范围的DTC仿真模型,并加以验证,结果证明了提出方案的可行性和正确性。

In this paper, the simulation models of direct torque control （DTC） systems of induction motors with two flux linkage control modes are established by Matlab/Simulink, i.e. hexagon flux linkage control mode and approximate circle flux linkage control mode. The result analysis and comparative study are also carried out. On this basis, a full speed range of DTC simulation model is established and verified by combination and smooth transition of the two control models. The result proves that the proposed scheme is feasible and correct.