基于直接功率控制双馈风电系统最大功率点跟踪

Maximum Power Point Tracking of Doubly Fed Wind Power Generation System Based on Direct Power Control

针对风电系统在最大功率点跟踪(MPPT)阶段对系统动态响应的要求,在双馈感应发电机(DFIG)中提出了一种基于直接功率控制(DPC)的MPPT控制策略。该控制策略可在两相静止坐标系下实现,无需锁相和旋转坐标变换,简化了系统控制结构;采用基于滑模控制(SMC)的DPC方法,具有动态响应快、鲁棒性强的优点。仿真和实验均表明了该控制策略的正确性和有效性。

A maximum power point tracking（MPPT） control method based on direct power control（DPC） is proposed for doubly fed induction generator（DFIG） based on wind power generation system which can meet the requirements of dynamic response.The proposed control strategy is designed in two-phase static coordinate without involving any rotating coordinate transformations and phase-locked.DPC based on sliding-mode control（SMC） is used.The controller has advantages of simple structure,rapid response and high robustness.Simulation and experimental results confirm the reliability and validity of the proposed control strategy.