电网电压跌落时双馈感应风力发电系统无功功率控制策略  

A Var-support Method for Doubly-fed Induction Generator Under Voltage Dip

作　　者：段军[1] 

机构地区：[1]西南交通大学电气工程学院

出　　处：《变频器世界》2011年第10期59-61,89,共4页The World of Inverters

摘　　要：为提高双馈风力发电机在电网电压跌落时的不间断运行能力,提出了双馈风力发电机(DIFG)转子侧变流器无功支持控制策略,并进行了仿真研究。仿真结果表明,该控制方案在不增加硬件成本的基础上提供无功支持,降低了电网压降,减少了直流母线电压波动,提高了双馈风力发电系统的低压穿越能力。To improve the performance of DFIG under voltage dip, a novel Var-support method for rotor-side converter of doubly-fed induction generator was proposed. The result from Simulink model showed that depth of voltage dip can be sharply reduced without any additional cost by supply reactive power, in the mean time the voltage disturbance of DC-link was reduced too, and therefore low voltage ride （LVRT） through behavior was improved.

关 键 词：双馈风力发电机 低压穿越 无功支持 

分 类 号：TM315[电气工程—电机]