直接转矩控制的磁链控制方法仿真与分析

Simulation and analysis of flux control method by direct torque control

以异步电动机直接转矩控制基本原理为基础,利用Matlab/Simulink搭建2种磁链控制方法:六边形磁链控制方法和近似圆形磁链控制方法的仿真模型。通过改变转速给定值,得出在不同给定条件下的仿真结果,并对其结果加以分析。通过2种方法的对比,给出在全速范围内2种控制方法实现平滑切换的仿真模型。仿真结果验证了2种控制方法平滑切换的可行性,对直接转矩控制技术应用于工程技术等方面有一定的实用价值。

Based on the basic theory on direct torque control, by the use of Matlab/simulink, the simulation models for the two methods of the direct torque control systerm,which are hexagon and approximate rotundity flux linkage control methods, were made. By the change of given speed, simulation results in different condition are gained and analysed. Through the comparison of two methods, the smooth switch model in full speed between the two kinds of control sumilations was given, and the simulation results show the smooth switch between the two kinds of control sumilations has a certain practical value for the direct torque control in engineering technology.