摘要
采用Crowbar保护电路可以极大地提高双馈式风电系统的低电压穿越能力(LVRT)。建立了双馈风力发电机(DFIG)的数学模型,对IGBT型Crowbar保护电路关键参数—卸能电阻最优值范围进行研究。并通过MATLAB/Simulink搭建了变速恒频DFIG风力发电系统模型,仿真表明当电网电压大幅度跌落时采取Crowbar保护电路的必要性。
The Crowbar protection circuit can greatly improve the low-voltage ride-through （LVRT） capability of the doubly-fed wind power system. This paper establishes the mathematical model of doubly-fed induction generator （ DFIG）, which is used to study the key parameters of the Crowbar protection circuit based on IGBT type-optimal val- ue range of discharge resistance. And a model of VSCF DFIG wind power generation system is built through MAT- LAB/Simulink. The simulation show that the necessity to take crowbar protection circuit when the grid voltage drops significantly.
作者
杨睿琬
何志琴
周进
马文辉
Yang Ruiwan He Zhiqin Zhou Jin Ma Wenhui(School of Electrical Engineering, Guizhou University, Guiyang 550025, Chin)
出处
《电测与仪表》
北大核心
2017年第15期7-12,共6页
Electrical Measurement & Instrumentation
基金
贵州省科技厅科技合作计划项目([2015]1203)
