双馈风力发电系统反推控制策略的研究

Backstepping Control Strategy Research of Doubly Fed Wind Power System

为了提高双馈风力发电系统的控制性能,本文提出了一种基于反推算法的双馈风力发电系统直接功率控制策略。首先建立了基于定子磁链定向控制的双馈异步发电机数学模型,然后将反推控制与直接功率结合,从实现功率跟踪的目标着手,进行反推控制器的设计。在Matlab/Simulink环境下对该系统进行了仿真。仿真结果表明,所设计的控制器可以实现对风力发电系统有功功率和无功功率的跟踪,且具有良好的动、静态特性和鲁棒性。

In order to improve the operating performance of doubly-fed induction generation system, this paper proposed a direct power control （DPC） based on back-stepping algorithm. First established the mathematical model of the doubly-fed induction generator based on stator flux orientation control, then combining back-stepping control and direct power, begin from achieving power tracking, back-stepping controller was designed. In the Matlab/Simulink environment, the system was simulated. The simulation results show that the designed controller can achieve wind power system active power and reactive power tracking, and has good dynamic and static performance and robustness.