双馈异步风力发电机建模与仿真研究

Modeling and Simulation Research of Doubly-fed Asynchronous Wind Power Generator

阐述了双馈异步风力发电机的工作原理,并建立了双馈异步发电机的数学模型;分析研究了双馈异步发电机并网前定子电压控制与并网发电后的有功无功控制原理;在STAR-90仿真支撑平台上建立仿真模型,并进行了仿真和实验,验证了双馈异步发电机模型和控制模型的正确性和有效性。

At present, the AC-excited variable speed constant frequency wind turbines have become the dominating type.Variable speed constant frequency of wind turbine generator is mostly used doubly-fed asynchronous generator. This paper first described working principle of doubly-fed induction wind turbine, and established mathematical model of a doubly-fed induction generator. Then analyzed and studied the doubly-fed induction generator stator voltage control before connecting to grid and active and reactive power control after connecting to grid. Finally, simulation mode was established on the STAR-90 simulation platform, and it is proved that the double-fed induction generator model and control model is correct and effective through simulation and experiment.