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 in 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搭建两种磁链控制方法——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。通过两种方法的对比,给出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方面有一定的实用价值。

The simulated model of two kinds of flux linkage control method,hexagon flux linkage combined with rotundity flux linkage method,was established based upon the Prin of direct torque control of the asynchronous motor and by means of Matlab/Simulink platform.Different results were gained and analyzed when changing the set rotating speed.Through the comparison of two different methods,the simulated model to realize the smooth exchange between two methods in the full speed range was presented.Simulation results showed the feasibility to realize the smooth exchange between two methods,thus,brought up with the valuable practical application of direct torque control into the engineering technology.