新型混合式高压直流输电DC/DC变换器  

Hybrid DC/DC Converter for HVDC Transmission System

作　　者：李彬彬[1] 张书鑫 程达 王卫[1] 徐殿国[1] LI Binbin, ZHANG Shuxin, CHENG Da, WANG Wei, XU Dian,guo(School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江省哈尔滨市150001

出　　处：《电力系统自动化》2018年第7期116-122,共7页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(51237002);中央高校基本科研业务费专项资金资助项目;中国科协青年人才托举工程资助项目~~

摘　　要：针对高压直流电网中现有DC/DC变换器拓扑在成本、效率方面的不足,提出了一种基于模块串联技术以及晶闸管、二极管串联技术的混合式DC/DC变换器拓扑,以实现高压直流电网中不同电压等级的互联。对该拓扑结构的工作原理、控制策略、元器件参数设计、经济性等方面进行了全面的分析论证。最后,在MATLAB中进行了仿真,验证了所提DC/DC变换器的可行性。In order to overcome the disadvantages of existing DC./DC converters in cos1 and efficiency, a novel hybrid DC/I）C converter topology is proposed based on the module .scrim technology as well as thyristor and diode serial technology. It can be used to connect two HVI）C power grids with different DC vohage levels. This paper thoroughly analyzes and demonstrales the working principle, control strategy, parameter design and technique economy of the proposed topology. Finally, simulations in MATLAB validate the feasibility of the proposed DC/DC converter.

关 键 词：高压直流输电 直流电网 DC/DC变换器 模块串联技术 模块化多电平换流器 

分 类 号：TM46[电气工程—电器]