风力发电机低电压穿越测试变流器中电流特性分析  

Wind Turbine LVRT Test Converter Current Characteristics Analysis

作　　者：赵清松[1] 徐建源[1] 刘劲松[2] 王刚[2] 戈阳阳[2] 

机构地区：[1]辽宁省电网安全运行与监测重点实验室(沈阳工业大学),辽宁沈阳110870 [2]辽宁省电力有限公司电力科学研究院,辽宁沈阳110006

出　　处：《东北电力技术》2013年第1期13-17,共5页Northeast Electric Power Technology

摘　　要：对风力发电机变流器数学模型进行了分析,研究低电压穿越期间变流器的电流特性,在低压侧(690 V)设置电压跌落点,得到在不同跌落模式下风机变流器中流过电流的数据,分析可知,电压跌落期间,变流器中流过较大的电流,在跌落开始和结束时电流有效值可达到最大,且两相跌落时变流器中流过的电流有效值比单相和三相跌落时的大。In this paper the mathematical model of the wind turbine converter is analyzed. The current characteristic of the wind tur- bine converter is studied during the low voltage ride through （LVRT）. Voltage drop was taken in the low-voltage side （690 V） get- ting different drop made wind turbine converter rush current data. The analysis shows that during the voltage drop, the current flowing through the inverter has a peak value at the start and the end of the voltage drop, and two-phase voltage drop generated a higher cur- rent, its value is higher than the current in single-phase and three-phase voltage drop.

关 键 词：风力发电机 低电压穿越 变流器 电流特性 

分 类 号：TM315[电气工程—电机]