刘闯;支月媚;

• 1:东北电力大学电气工程学院

摘要(Abstract)：

对现有的几种典型电力电子变压器(power electronics transformer,PET)拓扑结构及优缺点进行分析,在此基础上,将谐振变换器及两电平方波变换器引入到传统级联型电力电子变压器,提出一种适用于中高压配电网的新型电力电子变压器拓扑结构。与传统PET相比,所提拓扑的优势在于可以显著减少体积,提高运行效率,并能够灵活切换于纯有功模式及无功补偿模式。对所提拓扑结构及工作原理进行了详细的论述,并建立了系统的交流侧及直流侧的平均模型;在此基础上,结合谐振变换器的工作特性提出了一种单级统一控制策略,简化了PET的控制系统。搭建了10 k V/1.5 MW的PET仿真系统,仿真结果表明了所提拓扑结构及其控制策略的可行性和有效性。

关键词(KeyWords)： 配电网;电力电子变压器;谐振变换器;单级控制

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51307021);; 吉林省自然科学基金项目(20140101076JC)~~

作者(Author): 刘闯;支月媚;

Email:

DOI: 10.13335/j.1000-3673.pst.2016.0942

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