南方电网技术2026，Vol.20Issue(5)：1-9,70,10.DOI:10.13648/j.cnki.issn1674-0629.2026.05.001
低频输电系统中M3C的共模电压注入故障穿越控制策略
CMV Injection Fault Ride-Through Control Strategy for M3C in Low Frequency Transmission System
摘要
Abstract
Low frequency transmission system is a new type of AC transmission technology that combines traditional high voltage AC transmission and high voltage DC transmission,and adopts low frequency below power frequency.The core power converter of the system,the modular multilevel matrix converter(M3C),is a new AC/AC converter topology suitable for high voltage and high power.The fault-tolerant control of M3C is of great significance for improving the reliability of M3C system,but there are still problems with its fault-tolerant control strategy at present.The fault-tolerant control strategy with an optimal common mode voltage(CMV)injection method is proposed in this paper,which is able to maximize the input and output voltage ranges of the M3C after the failure of the non-redundant submodules.By calculating the relationship between the fundamental reference voltage and the maximum available voltage of each bridge arm branch in real time,the method can dynamically adjust the optimal CMV for injection to adapt to different fault situations.Finally,experiments are conducted in both MATLAB/Simulink and RT-LAB platforms to verify the correctness and effectiveness of the method proposed in this paper under single and multiple bridge arm branches fault conditions.关键词
低频输电系统/模块化多电平矩阵变换器/容错控制/最优共模电压注入/非冗余子模块故障/故障穿越控制Key words
low frequency transmission system/modular multilevel matrix converter/fault-tolerant control/optimum common mode voltage injection/non-redundant sub-module fault/fault ride-through control分类
信息技术与安全科学引用本文复制引用
程启明,张磊,张梁,程尹曼,王立成..低频输电系统中M3C的共模电压注入故障穿越控制策略[J].南方电网技术,2026,20(5):1-9,70,10.基金项目
国家自然科学基金资助项目(62473247) （62473247）
上海市电站自动化技术重点实验室资助项目(13DZ2273800). Supported by the National Natural Science Foundation of China(62473247) （13DZ2273800）
the Project of Shanghai Key Laboratory of Power Station Automation Technology(13DZ2273800). （13DZ2273800）
