摘要：对按定子磁链定向的直接转矩控制系统进行了计算机仿真研究，运用Matlab的Simulink和Power System工具箱、面向系统电气原理结构图的仿真方法,实现了直接转矩的控制系统的建模与仿真。重点介绍了调速系统的PWM建模和参数的设置,给出了直接转矩控制的交流调速系统的仿真模型和仿真结果,仿真结果非常接近实际情况,说明了仿真模型的正确性。
关键词：交流异步电动机；仿真建模；Matlab；直接转矩控制

Abstract: The simulation of direct torque control system for stator  flux oriented was studied in this paper. The methods using electrical principle and simulink and power system in the Matlab completed the model and simulation of direct torque  control system. The paper mainly introduced the modeling and  parameters of  PWM.The simulational results are  close to actual situation, which prove the correctness of the modeling.
Key words: AC asynchronous ; modeling and simulation; Matlab; direct torque control