基于内模电流控制的交流感应电机矢量控制系统

作者：蒋卫宏 日期：2007-05-08/span> 浏览：4277 查看PDF文档

                                  基于内模电流控制的交流感应电机矢量控制系统
                                                蒋卫宏
（连云港职业技术学院 机电工程学院，江苏 连云港 222006）

摘 要：从同步速d-q坐标系下异步感应电机动态模型和异步电机矢量解耦控制的基本原理出发，引入了内模控制方法，设计了基于转子磁链定向和内模控制的定子电流调节器。考虑到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而导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。在此基础上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和分析。仿真和分析结果表明，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、静态解耦效果。
关键词：矢量变换；解耦控制；磁场定向；电流内模控制

            Decoupled vector control system of AC induction motor based on internal model current control
                           JIANG Weihong
(College of Mechanical & Electrical Engineering, LianyungangTechnical College, Lianyungang 224002, China)
Abstract: On the basis of the dynamic asynchronous motor model in thed-q reference frame rotating at synchronous speed, internal model control method was introduced, based on which and rotor flux oriented vector control, the stator current controllers were designed. Considering the parameters nonlinearity caused by different extent flux saturation along with the variations of torque load in the real experimental systems, robustness of the current internal model controller to such nonlinear parameters was analyzed. Based on the model, a whole vector control simulation system was established, and subsequently the simulation study was carried out respectively with and without flux saturation. The simulation results indicate that, the current internal model controllers can provide good steadystate and dynamic decoupled performance under both model matching and model mismatching.
Key words: vector transformation; decoupled control; fieldorientation; internal model current control

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