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 on 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完成直接转矩控制系统的六边形磁链控制方法和近似圆形磁链控制方法的仿真。通过改变转速给定值,得出在不同给定条件下的仿真结果,并对仿真结果进行了具体分析。最后给出了在全速范围内两种控制方法实现平滑切换的仿真模型,仿真结果验证了两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。

Base on the basic theory on direct torque control, by use of Matlab/simulink, the simulations on the two methods of the direct torque control system, which are hexagon and approximate rotundity flux linkage control methods, were made in this paper. By the change of given speed, simulation results in different condition are gained and concretely analysed. At last the smooth switching simulation model in full speed between the two kinds of control simulations was given. And the simulation results show the feasibility of the smooth switching between the two kinds of control simulations, which will have a certain practical value for the direct torque control in engineering technolog and so on.