南方电网技术2025，Vol.19Issue(12)：32-42,11.DOI:10.13648/j.cnki.issn1674-0629.2025.12.004
模块化多电平型中高压直流变压器拓扑与控制综述
Review of Topology and Control Strategy of Modular Multilevel Medium and High Volage DC Transformer
摘要
Abstract
Medium and high voltage direct current(DC)transformer is one of the key equipments for DC collection of new energy generation and voltage conversion in DC transmission and distribution system.Modular multilevel DC transformer(MMDCT)has high modularity and strong voltage expansion ability,which is the mainstream technical solution of high voltage and high power DC energy conversion,showing a rapid development trend.The typical application scenarios of medium and high voltage DC transform-ers are summarized,and then the typical topology of MMDCT is summarized.On this basis,the key technical problems of MMDCT such as modulation strategy,capacitor voltage balancing control method,circulating current suppression strategy,power control scheme,prototype and application,are analyzed and summarized.Finally,the development trends of MMDCT in the future are prospected,and the multi-functional roles and the multi-direction technical challenges of MMDCT in the future DC power grid are summarized.关键词
直流变压器/模块化多电平换流器/直流电网/拓扑结构/控制策略Key words
DC transformer/modular multilevel converter/DC grid/topology/control strategy分类
信息技术与安全科学引用本文复制引用
王学成,段天元,田艳军,杨迪,徐小奇..模块化多电平型中高压直流变压器拓扑与控制综述[J].南方电网技术,2025,19(12):32-42,11.基金项目
国家自然科学基金资助项目(52077079) （52077079）
河北省自然科学基金资助项目(E2022502032). Supported by the National Natural Science Foundation of China(52077079) （E2022502032）
the Natural Science Foundation of Hebei Province(E2022502032). （E2022502032）
