南方电网技术2025，Vol.19Issue(12)：1-10,31,11.DOI:10.13648/j.cnki.issn1674-0629.2025.12.001
模块化多电平矩阵变流器的桥臂均压控制策略
Bridge Arm Voltage Equalization Control Strategy of Modular Multilevel Matrix Converter
摘要
Abstract
Addressing issues such as unbalanced DC-side capacitor voltage of the nine bridge arms and sub-module(SM)capacitor voltage fluctuations during the operation of the modular multilevel matrix converter(M3C),a circulating current control strategy for bridge arm voltage balancing is proposed.A mathematical decoupling model for both the input and output sides of the M3C is established.Through the analysis of the power of each bridge arm in the M3C,a hierarchical control strategy for bridge arm capacitor voltage balancing is designed,eliminating severe oscillations caused by low-frequency AC components of capacitor voltage ripple under the conditions fm≈0 and fm=fg.A semi-physical experimental system for the M3C is built on the RT-LAB platform,and system operation under normal,low-frequency,and special operating conditions is simulated.Experimental results show that the proposed bridge arm voltage balancing control strategy performs well,with small fluctuation range of DC-side capacitor voltage and better output power quality.关键词
模块化多电平矩阵变流器/环流控制/瞬时功率控制/载波移相调制/桥臂均压控制Key words
modular multilevel matrix converter/circulation control/instantaneous power control/carrier phase-shift modulation/bridge arm voltage equalization control分类
信息技术与安全科学引用本文复制引用
程启明,张梁,王为涛,沈治超,罗力珲,王海伦..模块化多电平矩阵变流器的桥臂均压控制策略[J].南方电网技术,2025,19(12):1-10,31,11.基金项目
国家自然科学基金资助项目(62303301) （62303301）
上海市电站自动化技术重点实验室项目(13Z2273800). Supported by the National Natural Science Foundation of China(62303301) （13Z2273800）
the Key Laboratory Project of Shanghai Key Laboratory of Power Station Automation Technology(13DZ2273800). （13DZ2273800）
