感应电机矢量控制解耦算法的研究

Research on Decoupling Control System of Induction Motors

矢量控制是通过坐标变换将感应电机模型转化为类似于直流电机的模型,使定子电流在同步旋转坐标系中的两个相互垂直分量分别独立控制转矩和转子磁链,从而获得类似于直流电机的调速性能。为此,对感应电机的数学模型进行了分析,通过矢量变换得到了在d、q坐标系下的闭环系统方程,对电机进行了解耦控制。在由TMS320F2812搭建的数字化实验平台上进行了实验,实验结果证明了研究方案的可行性。

Vector control is used to change induction motor model into the model similar to direct-current machine by means of coordinate transformation. The torque and rotor linkage are controlled separately two inter-vertical components of stator current in the synchronous rotary coordinate system. Then it will acquire the speed governing property such as direct-current machine. Hence, in this paper the study of decoupling control is carried out referring to the five-order nonlinear mathematical model of induction motor supplied by voltage resource in a stationary reference frame. Based on the TMS320F2812, the digital experimental platform is developed, and the results of experiments proved the feasibility and validity of the scheme in this paper.