电网对称短路故障时1.5MW双馈风电变流器的低电压穿越技术

Low Voltage Ride Through of 1.5MW DFIG Converter under Symmetric Grid Failure

近年来,风力发电发展迅速,低电压穿越成为风电电网适应性问题中最重要的一个。文章针对1.5MW双馈风电变流器,提出一种对称故障时的低电压穿越控制方法,利用转子侧crowbar和直流链chopper的配合,成功地实现了低电压穿越,取得了较好的效果。

Recently,low voltage ride through（LVRT） becomes the most important one of grid adaptability problems.With the rapid development of wind power,considering 1.5MW double-fed wind turbine converter,this paper presents a method of LVRT control under symmetric grid failure,which applies the rotor crowbar and DC link chopper to achieve LVRT and has good result.