一种风电变流器并联环流抑制方法  

A Parallel Circulation Suppression Method for Wind Power Converters

作　　者：金结红[1] 杨春源[1] JIN Jie-hong;YANG Chun-yuan(Sungrow Power Supply Co.,Ltd.,Hefei 230088,Chin)

机构地区：[1]阳光电源股份有限公司,安徽合肥230088

出　　处：《通信电源技术》2018年第5期33-34,共2页Telecom Power Technology

摘　　要：随着风电机组的功率等级增大,变流器并联成为提高永磁风电机组功率的一种有效措施。而基于成本因素考虑,变流器网侧滤波器一般采用LC滤波方案,这样两并联柜之间没有变压器隔离而形成环流。如果处理不当,环流会引起滤波电容应力增加,甚至烧毁电容等严重事故。文中设计了一种LC谐振回路,通过配置合理的参数,来抑制电容之间的高频环流,使并联机柜能够安全稳定运行。With the increase of power level of wind turbines, parallel converters become an effective measure to improve the power of permanent magnet wind turbines. Considering the cost factor, the LC filter is usually adopted in the converter side filter, so there is no transformer isolation between the two parallel cabinets. If it is not handled properly, the circulation will cause serious stress of filter capacitor and even burn capacitor. A I.C resonant circuit was designed to suppress the high frequency circulation between capacitors by configuring reasonable parameters, so that the parallel cabinet can operate safely and stably.

关 键 词：并联 环流 LLC滤波器 谐振 

分 类 号：TM46[电气工程—电器]