双馈风电机组发电效率提升研究

Research on the Generating Efficiency Improvement of Doubly Fed Wind Turbines

为了提升双馈风电机组在弱风地区的竞争力,文章在分析双馈机组发电效率构成及影响因素的基础上,提出在低风速时段将双馈发电机定子短接的方法,使其工作在感应异步电机状态,从而提升双馈机组发电效率。仿真及实验结果表明,采用该方法后双馈机组的发电量可提升1.5%左右。

In order to improve the competitiveness of doubly fed wind turbines in low wind speed areas, it proposed a method to improve the generating efficiency of doubly fed wind turbines by shorting out the stator of doubly fed generator and making it work in the induction motor state during low-wind-speed period, based on the analysis of structure and influence factors of doubly fed wind turbine＇s generation efficiency. Simulation and experimental results showed that the power generation capacity could be increased by about 1.5%.