基于MPPT的变速恒频双馈风力发电控制策略

Control Strategy of Variable Speed Constant Frequency Wind Turbine System Driven by Doubly Fed Induction Generator Based on MPPT

分析了双馈发电机定子磁场定向矢量控制原理,采用基于速度外环的并网发电控制策略和一种不依赖风机特性和空气密度的最大风能捕获的算法,构建了110kW变速恒频双馈风力发电模拟平台,实现了变速恒频双馈风力发电机的有功、无功功率的前馈解耦控制和最大功率点跟踪控制。

This paper analyzed the stator flux oriented vector control theory for doubly fed induction generator. The control strategy of grid connected based on speed feedback, and the arithmetic of tracking the peak power independent of the turbine characteristics and air density, were used in the system. 110 kW VSCF doubly fed induction generator wind power system was constructed in the laboratory, which realized the decoupled control of the active power and reactive power for stator output and the control of maximum power point tracking.