一种适用于低电压穿越篚新型Crowbar电阻器  

A new type of Crowbar resistor applied to low voltage ride-through

作　　者：暴国辉[1] 孙先春 傅闯 

机构地区：[1]湘潭大学信息工程学院,湖南湘潭411100 [2]上海鹰峰电子科技有限公司,上海201604

出　　处：《变频技术应用》2013年第4期54-58,共5页INVERTER TECHNOLOGIES AND APPLICATIONS

摘　　要：随着风电场大规模接入电网，新的并网规范要求风力发电机组必须具有低电压穿越能力。双馈型异步发电机（DFIG）采用转子侧并联Crowbar电阻的方式限制电压跌落时转子产生的过电流，从而实现DFIG的低电压穿越运行。本文分析了电压跌落对DFIG运行性能的影响。对新型Crowbar电阻器进行了仿真，并且做了实物进行了试验。结果表明，此种新型Crowbar电阻器适用于低电压穿越的要求。As wind farms being coupled with power grid in large-scale, the new grid code is drafted to require the condition that wind turbines must have low voltage ride-through （LVRT）capability. To realize low voltage ride-through of doubly-fed induction generator （DFIG）,Crowbar resistance in parallel are usually equipped to the rotor side to limit the over-current during the voltage dipping. This paper analyzes the voltage drop on the DFIG running performance. The new Crowbar resistor is simulated and prototype is made. The results show that such new Crowbar resistor applicable requirements in the new voltage across.

关 键 词：低电压穿越 双馈异步发电机 Crowbar电阻 

分 类 号：TN60[电子电信—电路与系统]