电测与仪表2018，Vol.55Issue(1)：84-90,7.
基于3N桥臂的MMC-STATCOM控制方法研究
Research on control method of 3 N-arm MMC-STATCOM
摘要
Abstract
In order to cope with the increasing demand for reactive power of power system,an improved topology of MMC-STATCOM based on 3N-arm is proposed in this paper.This topology is able to replace the traditional paralleled connection mode of multi-STATCOM,thus reducing the control complexity of multi-MMC and avoiding the problem of resonance,power oscillation and circulating current between different units.What~ more,it could reduce system consumption and cost.The characteristic of circulating current of 3N-arm MMC is analyzed through mathematical modeling.Based on that,a suppressing method under d-q negative sequence rotation coordinate system to reduce 2nd harmonic ripple in circulating current is designed.The whole control scheme using direct current control under reactive power compensation condition is presented.Finally,the effectiveness and feasibility of the proposed topology and control method are verified by simulation results in Matlab/Simulink.关键词
模块化多电平变流器/静止同步补偿器/3N桥臂/环流抑制/无功补偿Key words
MMC/STATCOM/3N-arm/circulating current suppression/reactive power compensation分类
信息技术与安全科学引用本文复制引用
李欣,姚钢,周荔丹..基于3N桥臂的MMC-STATCOM控制方法研究[J].电测与仪表,2018,55(1):84-90,7.基金项目
国家自然科学基金资助项目(61374155) （61374155）
