级联多电平动态电压恢复器的仿真与试验研究  

A Simulation and Physical Experiment Study on Transformerless Cascaded Multi-level Dynamic Voltage Restorer

作　　者：尹忠东[1] 丁辉[1] 张哲然[1] 于坤山[2] 

机构地区：[1]华北电力大学,北京102206 [2]中国电力科学研究院,北京100085

出　　处：《电力电子技术》2005年第5期63-65,共3页Power Electronics

摘　　要：以我国基于级联多电平结构、无串联注入变压器、中压等级的2MVA动态电压恢复器(Dynamic Voltage Restorer,DVR)的示范工程为研究背景,提出并分析了系统的设计方案。基于EMTDC/PSCAD进行了大量数字仿真,结果验证了系统设计方案、控制算法的正确性及有效性。通过对所研制的2kVA六单元级联拓扑物理样机的模拟试验,验证了底层控制策略的正确性。Based on the first demonstration project of medium voltage level transformerless cascaded multi-level topology Dynamic Voltage Restorer （DVR） in China,the paper puts forward a novel system design scheme,elaborates the each part working principle of the installation and discusses control strategy of an unbalance sag compensation for an enterprise 6kV system based on the proposed cascaded structure.The EMTDC/PSCAD based simulation and the physical experiments on a 2.2kVA DVR prototype were carried out to verify the validity of proposed scheme and control strategy.

关 键 词：逆变器/动态电压恢复器 级联多电平 电压暂降 无注入变压器 

分 类 号：TM464[电气工程—电器] TM714.2