直接转矩控制的双馈电机负载模拟系统仿真研究

Simulation Study on Direct Torque Control Doubly-fed Machine Load Siumlation System

根据船舶电力推进负载试验系统的要求,采用直接转矩控制的双馈电机模拟负载的方法,针对双馈电机控制特点,建立转子dq坐标系下的数学模型;提出了一种经过改进的直接转矩控制策略;运用Matlab/Simulink建立控制系统模型,并进行了仿真分析。证明了利用直接转矩控制的双馈电机控制方法具有结构简单、响应迅速、负载值输出准确等特点,适合用于模拟螺旋桨负载。

In this paper, basis the request of load experiment system of marine electric propulsion, the doublyfed machine controled by the idea of Direct Torque Control （DTC） is used for load simulation. Aim at the control characteristics of doubly-fed machine, it build up the mathematical model under the d-q coordinate of rotor; Put forward a kind of improved DTC idea; The control system model is constructed by using Matlab/Simulink. The simulation analysis shows that the control system has a simple structure, a rapid responds and a accurate output load, ect. This system suits to simulate the load of propeller.