南方电网技术2025，Vol.19Issue(12)：75-87,13.DOI:10.13648/j.cnki.issn1674-0629.2025.12.008
基于模型补偿的MMC改进无模型滑模控制
Improved Model-Free Sliding Mode Control Based on Model Compensation for MMC
摘要
Abstract
A current loop improved model-free sliding mode control(IMFSMC)method is proposed to address the issues of steady-state power ripple and excessive current harmonics caused by dynamic loads,parameter mismatches,and single-phase short-circuit grounding faults in modular multilevel converters(MMC).Firstly,based on the mathematical model of MMC system,a model compensation hyperlocal model is constructed for parameter mismatch.Secondly,a time-varying gain adaptive sliding mode ap-proach law is proposed to design a current loop sliding mode model-free feedback controller.Simultaneously,a model compensated improved linearly extended state observer(MCILESO)is designed to estimate unknown disturbances in the hyperlocal model and compensate them to the sliding mode feedback controller.The stability of the controller and observer is proved using Lyapunov func-tion and Hurwitz theorem.Finally,based on MATLAB simulation and RTLAB semi physical platform,compared with PI control and traditional model-free sliding mode control,the results show that the proposed method can greatly improve the dynamic and steady-state performance of MMC systems under dynamic loads,parameter mismatches,and single-phase short-circuit grounding.Reduce the model dependency of MMC system,increase system robustness and anti-interference ability.关键词
模块化多电平换流器/改进无模型滑模控制/时变增益自适应滑模趋近律/模型补偿超局部模型/模型补偿改进线性扩张状态观测器Key words
modular multilevel converter(MMC)/improved model-free sliding mode control/time-varying gain adaptive sliding mode convergence law/model-compensated hyperlocal model/model-compensated improved linearly extended state observer分类
信息技术与安全科学引用本文复制引用
周杨,阳同光,杨京渝,曾梓茏..基于模型补偿的MMC改进无模型滑模控制[J].南方电网技术,2025,19(12):75-87,13.基金项目
国家自然科学基金资助项目(52377181) （52377181）
湖南省自然科学基金资助项目(2024JJ7088) （2024JJ7088）
湖南省教育厅优秀青年项目(23B0745) （23B0745）
湖南省教育厅科学研究项目(24C0458). Supported by the National Natural Science Foundation of China(52377181) （24C0458）
the Provincial Natural Science Foundation Project of Hunan(2024JJ7088) （2024JJ7088）
the Excellent Youth Project of Hunan Provincial Department of Education(23B0745) （23B0745）
the Scientific Research Project of Hunan Provincial Department of Education(24C0458). （24C0458）
