摘要
针对模块化多电平变换器(MMC)整流器中存在的环流问题,本文提出了一种基于准比例谐振(QPR)和重复控制(RC)协同的环流抑制策略。建立了等效电路模型和系统数学模型,分析了MMC整流器二倍频谐波分量及其他偶次倍频谐波分量环流的产生原因,通过QPR控制抑制环流中的二倍频分量,并融合RC来抑制全部偶数倍频的分量。实验结果表明:本文所提出的QPR和RC协同控制策略能够有效抑制MMC整流器中的环流,并在保障系统快速响应的同时提高了稳态精度。
Aiming at the circulating current problem existing in modular multilevel converter(MMC)rectifier,this paper proposes a circulating current suppression strategy based on collaborative quasi-proportional resonant(QPR)control and repetitive control(RC).By establishing the equivalent circuit model and system mathematical model,the causes of the second harmonic component and other even harmonic component of MMC rectifier are analyzed,and the second harmonic component of MMC rectifier is suppressed by QPR control,and all the even harmonic components are suppressed by RC.The experimental results have indicated that the composite controller can effectively suppress the circulating current in MMC rectifier,and improve the steady-state accuracy while ensuring the rapid response of the system.
作者
邓亚平
亷官根
王小凤
刘彦男
贾颢
Deng Yaping;Lian Guangen;Wang Xiaofeng;Liu Yannan;Jia Hao(School of Electrical Engineering,Xi’an University of Technology,Xi’an 710048,China;School of Automation and Information Engineering,Xi’an University of Technology,Xi’an 710048,China)
出处
《电力电子技术》
2026年第2期38-45,共8页
Power Electronics
基金
国家自然科学基金(62103328)
陕西省教育厅重点科学研究计划(24JS037)。
关键词
模块化多电平变换器
整流器
环流抑制
准比例谐振控制
modular multilevel converter
rectifier
circulating current suppression
quasi-proportional resonant control
