首页> 外文会议>2011 International Conference on Electrical Machines and Systems >Protection schemes for DFIG considering rotor current and DC-link voltage
【24h】

Protection schemes for DFIG considering rotor current and DC-link voltage

机译:考虑转子电流和直流母线电压的DFIG保护方案

获取原文

摘要

This paper presents new schemes for protecting power converters used in doubly fed induction generator (DFIG) during a grid fault condition considering rotor current and DC-link voltage as the key points to be focused on. The different alternative methods for the protection are described, in which two schemes using the coordinated control of the d and q axis measured currents of the rotor side converter and series dynamic braking resistor (SDBR) connected to the stator are proposed and compared. The simulation results in PSCAD/EMTDC show that the two proposed schemes can eliminate the need for an expensive crowbar switch, because both could limit the rotor current of the DFIG within its nominal value during a grid fault.
机译:本文提出了一种新的方案,以转子电流和直流母线电压为重点,在电网故障情况下保护双馈感应发电机(DFIG)中使用的功率转换器。描述了不同的替代保护方法,其中提出了两种方案,分别使用转子侧变流器的d和q轴实测电流的协调控制以及连接到定子的串联动态制动电阻(SDBR)进行比较。 PSCAD / EMTDC中的仿真结果表明,这两种提议的方案可以消除对昂贵的撬棒开关的需求,因为这两种方案都可以在电网故障期间将DFIG的转子电流限制在其标称值之内。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号