中南大学学报（自然科学版）2017，Vol.48Issue(1)：148-155,8.DOI:10.11817/j.issn.1672-7207.2017.01.021
具备阻断直流侧故障电流模块化的多电平换流器应用研究
Applied research of a modular multilevel converter with DC fault ride-through capability
摘要
Abstract
In view of sub-modules (SMs) in larger quantities and the incapability of blocking DC fault current of the modular multilevel converter (MMC) for high voltage direct current (HVDC) transmission projects in current operation,a new modular multilevel topology based on traditional MMC topology was presented with its bridge arm consisting of two serial SMs groups constituted by half bridge sub-module (HBSM) and clamp double sub-module(CDSM) in series,incorporating features of low conduction loss and reduce additional components.Its basic parameters design and the coordination switching processes of SMs in two groups were elaborated.The corresponding model predictive control (MPC) strategy was adopted for the new MMC topology.The results show that the new MMC topology not only has the ability to block DC fault current,but also increases output level number at the same number of SMs requirements.The AC voltage output waveform is closer to a sine wave.关键词
模块化多电平换流器/半桥子模块/箝位双子模块/直流侧故障/模型预测控制Key words
modular multilevel converter (MMC)/half bridge sub-module (HBSM)/clamp double sub-module (CDSM)/DC fault/model predictive control (MPC)分类
信息技术与安全科学引用本文复制引用
邱欣,夏向阳,吕大全,孟科,蔡洁,汤赐,肖辉,易浩民,周云..具备阻断直流侧故障电流模块化的多电平换流器应用研究[J].中南大学学报（自然科学版）,2017,48(1):148-155,8.基金项目
湖南省教育厅创新平台开放基金资助项目(16K004) （16K004）
湖南省(长沙理工大学)研究生科研资助项目(CX2016B405)(Project(16K004) supported by Hunan Provincial Department of Education Innovation Platform Open Fund Project （长沙理工大学）
Project(CX2016B405)supported by Hunan Province (Changsha University) of Science& Technology Graduate Student Research) （CX2016B405）
