直流-直流自耦变压器及其扩展技术  

Technologies of DC-DC Autotransformer and Its Extension

作　　者：林卫星[1] 文劲宇[1] 程时杰[1] 

机构地区：[1]强电磁工程与新技术国家重点实验室(华中科技大学),武汉430074

出　　处：《南方电网技术》2016年第1期11-17,共7页Southern Power System Technology

基　　金：中国博士后科学基金资助项目(2015M580643)~~

摘　　要：总结了一类新型的直流-直流变换技术—直流自耦变压器(DC AUTO)的设计与发展。阐述了直流-直流自耦变压器对直流电网的作用,以及DC AUTO的提出历程及其支撑技术,并把DC AUTO与常规交流自耦变压器作了类比。分析了具备双向直流故障隔离能力的DC AUTO的成本和损耗,并总结了多端口DC AUTO、混合型DC AUTO、单向DC AUTO、网间联络器等多种扩展技术,指出在中、低变比领域,DC AUTO可以取代常规DC/AC/DC技术。This article summarizes the design and development of DC-DC autotransformer（ DC AUTO）, a new type of DC-DC converter. The prior art of DC AUTO is firstly described, and then the development of DC AUTO and its supported technologies are summarized. Analogy between AC autotransformer and DC autotransormer is investigated. The converter cost and power loss ratio of DC AUTO with bidirectional DC fault isolating capability are studied. A number of extended technologies such as multiport DC AUTO, hybrid DC AUTO, unidirectional DC AUTO and grid interconnector are summarized, pointing out that under low and medium stepping ratio, the DC AUTO technology is able to replace the conventional DC/AC/DC technology.

关 键 词：直流-直流变换器 直流输电 直流-直流自耦变压器 自阻型子模块 模块化多电平换流器 

分 类 号：TM721.1[电气工程—电力系统及自动化]