电机与控制应用2024，Vol.51Issue(1)：77-86,10.DOI:10.12177/emca.2023.166
基于比例和改进准谐振控制的MMC环流抑制策略
MMC Circulating Current Suppression Strategy Based on Proportional and Improved Quasi-Resonant Control
摘要
Abstract
Modular multilevel converter(MMC)generates circulating currents flowing between phases due to fluctuations in capacitor voltage,which increases energy loss and adversely affects the insulated gate bipolar transistors(IGBTs)in the sub-modules.In order to suppress the circulating current,a proportional controller capable of generating inverse doubling components is designed based on the dynamic mathematical model of the circulating current.The conventional quasi-resonant controller is improved for the high harmonics in the circulating current.And the proposed strategy is verified by simulation,the simulation results show that the proportional control strategy quickly reaches the steady-state suppression of the circulating current after only 0.2 s.The improved quasi-resonant control strategy optimizes the THD value by 3.56％compared with the pre-improvement one,which further reduces the high-frequency harmonic components and verifies the feasibility of the proposed strategy.关键词
模块化多电平换流器(MMC)/环流抑制/比例控制/谐振控制Key words
modular multilevel converter(MMC)/circulating current suppression/proportional control/resonance control分类
信息技术与安全科学引用本文复制引用
徐世周,钟一鸣,张梦洁,裴天一,姚晶莹..基于比例和改进准谐振控制的MMC环流抑制策略[J].电机与控制应用,2024,51(1):77-86,10.基金项目
河南省科技攻关项目(202102210299) （202102210299）
新乡市科技攻关项目(GG2020005)Science and Technology Research Project of He'nan Province(202102210299) （GG2020005）
Science and Technology Research Project of Xinx-iang City(GG2020005) （GG2020005）
