面向直流配电网尾端功率变换的组合式直流变压器研究  

Assembled DC transformer applied to DC distribution tail power conversion

作　　者：刘闯[1] 何达成 徐鑫哲[3] LIU Chuang;HE Dacheng;XU Xinzhe(College of Electrical Engineering, Northeast Dianli University, Jilin 132012, China;State Grid Jiangsu Eletric Power Co., Ltd. Changzhou Power Supply BR, Changzhou 213000, China;State Grid Beijing Electric Power Company,Beijing 100000,China)

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012 [2]国网江苏省电力有限公司常州供电分公司,江苏常州213000 [3]国网北京电力公司,北京100000

出　　处：《电力自动化设备》2018年第7期43-50,共8页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51307021)~~

摘　　要：着力于未来直流配电网尾端功率变换应用研究,提出了一种新型高频隔离型组合式直流变压器(ADCT)概念,利用标准化模块来构建所期望的系统结构,并通过临近控制来协调模块功率,进而实现整体平衡。临近控制主要利用谐振变换器的电压箝位特性实现电压平衡,同时利用电磁耦合电流平衡(MC-CB)单元保证模块间的电流平衡。基于标准化模块,将一种新型的IS-IPOP型串并联结构应用于ADCT中。最后,搭建的ADCT硬件实验系统也验证了所提方案的有效性和合理性。A novel high-frequency isolation ADCT（ Assembled DC Transformer） is proposed for future DC distribution tail power conversion,which assembles the desired system structure with the standardized modules,and coordinates the module power and realizes the global coordination control by neighbor control. Neighbor control mainly uses the voltage clamping of resonant convertor to realize the voltage balance and MC-CB（ Magnetic-Coupling Current-Balancing） cell to guarantee the current balance among modules. Based on the standardized modules,a new ISIPOP series-parallel structure is proposed for ADCT. An ADCT hardware prototype is built up to verify the effectiveness and rationality of the proposed scheme.

关 键 词：直流配电网 高频隔离 临近控制 谐振直流变换 电磁耦合电流平衡 

分 类 号：TM761[电气工程—电力系统及自动化]