电力系统自动化Issue(3)：110-116,7.DOI:10.7500/AEPS20140103001
三相三线制模块化多电平换流器的对称稳态分析及解耦控制
Symmetric Steady-state Analysis and Decoupled Control of Three-phase Three-wire Modular Multilevel Converters
摘要
Abstract
By setting up a mathematical model of a three-phase three-wire modular multilevel converter (MMC), the correspondence relationship between the AC side current,circulating current and neutral point potential of DC side and the different components of arm voltages is obtained and the harmonics contained in the above-mentioned electrical quantities in symmetric steady-state are analyzed.A decoupled control method of AC side current,the AC component of circulating current and the neutral point potential of DC side is proposed.Simulation results show that the control method proposed is simple and effective,the decoupled control of AC side current,the AC component of circulating current and the neutral point potential of DC side is verified,and the electrical quantities of different arms remain symmetric,contributing to long-term stable operation of MMC.关键词
模块化多电平换流器/三相三线制/环流/直流侧中点电位/解耦控制方法Key words
modular multilevel converter (MMC)/three-phase three-wire/circulating current/neutral point potential of DC side/decoupled control method引用本文复制引用
于心宇,魏应冬,姜齐荣..三相三线制模块化多电平换流器的对称稳态分析及解耦控制[J].电力系统自动化,2015,(3):110-116,7.基金项目
国家高技术研究发展计划(863计划)资助项目(2012AA050215) （863计划）
国家自然科学基金青年基金资助项目(51107065)。This work is supported by National High Technology Research and Development Program of China (863 Program)(No.2012AA050215) and National Natural Science Foundation of China(No.51107065) （51107065）
