无刷双馈电机的自抗扰控制策略研究

基于同步旋转坐标系的无刷双馈电机(Brushlessdoubly-fedmachine,简称BDFM)的矢量解耦控制策略,可以实现控制绕组定子电流的转矩分量和磁链分量的解耦.但是,由于在实时控制中存在着外部干扰、参数变化和非线性等不确定问题,使得解耦后的定子电流转矩分量和磁链分量之间仍存在一定程度的耦合.运用自抗扰控制器原理,可同时实现BDFM的解耦控制和完全线性化,进而改善BDFM控制系统的动、静态性能及其鲁棒性.

Research on Strategies of Auto-disturbance Rejection Control of Brushless Doubly-fed Machine

The vector decoupling control strategy of brushless doubly-fed machine that bases on synchronous rotary reference frame, can realize decoupling of the stator current of torque and the stator current of magnetic chain in control winding; However, in real-time implementation, due to the uncertainties such as external disturbances, parameter varieties and nonlinearity, some coupling still exists between the two part ofstator current after decoupling; By applying auto-disturbance rejection controller, the vector decouple of BDFM and the complete linearization of the system can be achieved; Thereby the dynamic performance, static performance and robustness of the system ultimately can be improved greatly.