基于平均斜率控制的Crowbar双馈异步电机低电压穿越

尹万杰; 高桂革; 曾宪文

尹万杰,高桂革,曾宪文.基于平均斜率控制的Crowbar双馈异步电机低电压穿越[J].电测与仪表,2015,52(16):.
Yin Wanjie,Gao Guige,ZengXianwen.An LVRT Control Strategy Based on Average Slope Control of Crowbar for DFIG[J].Electrical Measurement & Instrumentation,2015,52(16):.

基于平均斜率控制的Crowbar双馈异步电机低电压穿越

An LVRT Control Strategy Based on Average Slope Control of Crowbar for DFIG

DOI：

中文关键词: 双馈感应电机撬棒电流平均变化率电阻参数优化

英文关键词:doubly-fed induction generator, Crowbar , current average slop control, Resistance Parameter optimization

基金项目:

作者中文名	作者英文名	单位
尹万杰	Yin Wanjie	上海电机学院
高桂革	Gao Guige	上海电机学院
曾宪文	ZengXianwen	上海电机学院

摘要点击次数: 1814

中文摘要:

文章针对双馈感应电机低电压穿越提出一种新的撬棒电路，传统的Crowbar电路采用固定阻值的电阻已经很难满足抑制转子电流，缩短撬棒电路工作时间的要求，有些研究提出了Crowbar并联动态电阻的双馈风力发电机低电压穿越方案，但接入Crowbar的并联电阻只是给出一个上限值，不能满足电网电压不同程度跌落效果都好。因此，提出一种基于电流变化率大小动态改变Crowbar电阻值的双馈感应电机低电压穿越方案。仿真分析与Crowbar并联动态电阻方案进行比较，Matalb/simulink仿真结果表明上述方法效果更好。

英文摘要:

This paper presents a new crowbar protection topology, for low voltage ride through (LVRT) of doubly fed induction generator (DFIG) based wind turbines. Traditional DFIG crowbar uses a fixed crowbar resistance, and it’s difficult to suppress both the rotor current and shorten the working time of crowbar at the same time. Parallel dynamic resistance are used in some papers, but only an upper limit be given that can’t capable to all the dips during grid fault. From the discussion, a new protection control scheme, with a crowbar controlled by average slop of current, is proposed.. In the case study, a comparison with a parallel dynamic resistance method based on RSC control is given. Matlab/simulink simulation results show that the proposed method is advantageous for fault over-current protection.

查看全文查看/发表评论下载PDF阅读器

关闭