电力系统自动化Issue(11)：79-84,6.DOI:10.7500/AEPS20131022006
适用于大规模MMC的分布式控制系统及两级均压策略
Distributed Control System and Two-layer Voltage Balancing Method for Large-scale Modular Multilevel Converters
摘要
Abstract
In high-voltage and large-power applications,the number of sub-modules in large-scale modular multilevel converters (MMCs) is huge,which makes the control system hardware design complicated and coordinated control difficult.In order to solve this problem,a control system consisting of one central control unit and several arm control units is proposed.Each arm control unit,in turn,consists of several valve-group control units,each of which j ust controls a few sub-modules.With the tasks of the central control unit and arm control units effectively reduced,the distributed control system is easily implemented and extended.In view of the proposed distributed control system with multiple control units,a new voltage-balancing method is divided into two parts,i.e.the intervalve-group voltage balance and the intravalve-group voltage balance.Finally,a three-phase 41-level MMC prototype is designed to verify the proposed control system and the voltage balancing method.It is shown by experimental results that the proposed control system is feasible and the proposed voltage balancing method is valid.关键词
模块化多电平换流器/分布式控制/桥臂控制单元/阀组控制单元/两级均压策略Key words
modular multilevel converter/distributed control/arm control unit/valve-group control unit/two-layer voltage balancing method引用本文复制引用
胡鹏飞,林志勇,周月宾,江道灼,梁一桥..适用于大规模MMC的分布式控制系统及两级均压策略[J].电力系统自动化,2014,(11):79-84,6.基金项目
浙江省重点科技创新团队资助项目(2010R50004)。This work is supported by Key Innovation Team of Zhejiang Province(No.2010R50004) （2010R50004）
