IGBT型Crowbar保护电路仿真研究  

Simulation study of IGBT Crowbar protection circuit

作　　者：杨睿琬 何志琴[1] 周进[1] 马文辉[1] Yang Ruiwan He Zhiqin Zhou Jin Ma Wenhui(School of Electrical Engineering, Guizhou University, Guiyang 550025, Chin)

机构地区：[1]贵州大学电气工程学院,贵阳550025

出　　处：《电测与仪表》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)

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.

关 键 词：双馈风力发电机 低电压穿越能力 IGBT型Crowbar保护电路 卸能电阻最优值 

分 类 号：TM614[电气工程—电力系统及自动化]