电工技术学报2017，Vol.32Issue(10)：61-68,8.
MMC-HVDC混合阻断拓扑直流故障抑制
MMC-HVDC Hybrid Blocking Topologies for Suppressing DC Fault
摘要
Abstract
How to deal with DC link fault has been a technical problem for the voltage source converter based HVDC. Several kinds of improved sub-module topologies were summarized firstly in this paper based on modular multilevel converter (MMC) DC fault suppressing mechanism. An improved sub-module and a hybrid sub-module with reverse-blocking half-bridge topologies were designed to solve the additional power consumption problem. Then according to the circuit voltage equation, the DC fault suppressing characteristics and sub-module capacitor voltage balancing problem were analyzed. What's more, a self-startup method was also designed. Lastly, the simulation model built in PSCAD/EMTDC has verified the self-startup process and DC link fault suppressing features.关键词
模块化多电平换流器/反向阻断/混合子模块/电压平衡/自励启动Key words
Modular multilevel converter/reverse-blocking/hybrid sub module/voltage balance/self-startup分类
信息技术与安全科学引用本文复制引用
张建坡,颜湘武,田新成..MMC-HVDC混合阻断拓扑直流故障抑制[J].电工技术学报,2017,32(10):61-68,8.基金项目
国家高技术研究发展计划(863 计划)(2015AA050603)和河北省自然科学基金(E2015502046)资助项目. （863 计划）
