电力系统保护与控制2026，Vol.54Issue(11)：72-83,12.DOI:10.19783/j.cnki.pspc.251332
基于首尾衔接调制的无冗余MMC暂态共模电压抑制策略
Transient common-mode voltage suppression strategy for MMC without redundant submodules based on head-tail connection modulation
摘要
Abstract
Submodule faults are typical problems in modular multilevel converter(MMC)systems.Existing ride-through strategies often fail to adequately consider the transient common mode voltage(CMV)during dynamic processes.To address this issue,a transient CMV modulation and suppression strategy for MMC submodule faults without redundancy is proposed.First,based on the head-tail connection modulation control,the number of inserted submodules in the upper and lower arms at any instant remains equal,thereby achieving CMV suppression under steady-state operation.Then,under this modulation framework,a submodule fault ride-through and compensation strategy is designed to achieve transient CMV suppression without raising the fault arm capacitor voltage.From the perspective of steady-state and transient CMV mechanisms,the principles,implementation process,performance characteristics,and possible improvements of the proposed modulation and compensation scheme are discussed.Finally,simulation and experimental results verify the correctness and effectiveness of the proposed scheme.关键词
模块化多电平换流器/子模块故障/首尾衔接调制/暂态共模电压/故障补偿策略Key words
modular multilevel converter(MMC)/sub-module fault/head-tail connection modulation/transient common-mode voltage/fault compensation strategy引用本文复制引用
孙孝峰,郭俊杰,尤燕飞,王紫喆,滕甲训,齐磊,李昕..基于首尾衔接调制的无冗余MMC暂态共模电压抑制策略[J].电力系统保护与控制,2026,54(11):72-83,12.基金项目
This work is supported by the Natural Science Foundation of Hebei Province(No.E2026203057). 河北省自然科学基金项目资助(E2026203057) （No.E2026203057）
河北省自然科学基金重点项目资助(E2024203258) （E2024203258）
燕山大学基础创新科研培育项目资助(2025LGQN011) （2025LGQN011）
