异步电机电流内模解耦控制系统分析与仿真

在同步速d-q坐标系下异步感应电机动态模型和解耦控制原理的基础上引入了内模控制方法,详细设计了基于转子磁链定向和内模控制的定子电流调节器。为了计及实际系统中异步感应电机磁场会随着电机负载(转矩)变化而呈不同程度的饱和以致电机参数的非线性,分析了电流内模控制器对这种非线性参数的鲁棒性,建立了整个异步感应电机矢量控制仿真系统,并分别对忽略磁路饱和和考虑磁路饱和两种情况下的系统进行了仿真分析。结果表明电流内模控制调节器在模型匹配和失配下均能提供良好的转矩动和静态解耦效果。

Analysis and Simulation of Decoupled Control System of Asynchronous Motor Using Internal Model Current Control

The internal model control method is introduced based on the dynamic model of asynchronous motor in d-q reference frame.And the design of stator current controller is proposed in detail based on rotor flux oriented vector control.In order to take parameter nonlinerarity into account which is caused by load variation in real system,robustness of the current internal model controller to such nonlinearity is analyzed,and the vector cnontrol simulation system is established.Simulation results under flux saturation considered and not considered show that the current internal model controller can provide good performance with matched model and unmatched model.