湖北电力2025，Vol.49Issue(3)：119-129,11.DOI:10.3969/j.issn.1006-3986.2025.03.014
计及分布参数影响的模块化多电平换流器充电策略优化
Optimization of Charging Strategy for Modular Multilevel Converters Considering the Influence of Distributed Parameters
摘要
Abstract
This paper introduces the structure and charging process of the high-voltage and large-capacity modular multilevel converter(MMC),and analyzes the influence of stray parameters on the charging process.In order to solve the problem of uneven charging voltage of sub-modules in the upper and lower bridge arms under the DC-side charging mode,a voltage difference correction strategy is proposed.The voltage difference between the upper and lower bridge arms is taken as the control target to feedback and adjust the number of charging modules in each bridge arm,which helps the voltage imbalance of the module to decrease from 6.7%to 1%,and solves the problem of module voltage imbalance among each bridge arm during the charging period on the DC side.Hence the paper provides a stable prerequisite for the subsequent modulation and control strategies of the modular multilevel converter so as to ensure the reliable operation of the equipment.关键词
模块化多电平换流器/杂散参数/直流侧充电/电压差值校正策略/电压均衡Key words
modular multilevel converter/stray parameters/DC side charging/voltage difference correction strategy/voltage balance分类
信息技术与安全科学引用本文复制引用
赵文志,卢宇,胡兆庆,姜崇学,黄韵清..计及分布参数影响的模块化多电平换流器充电策略优化[J].湖北电力,2025,49(3):119-129,11.基金项目
国家电网公司总部科技项目(项目编号:5200-202356480A-3-2-ZN). （项目编号:5200-202356480A-3-2-ZN）
