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期刊号: CN32-1800/TM| ISSN1007-3175

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基于互补超螺旋滑模的储能变流器改进自抗扰控制

来源:电工电气发布时间:2025-07-25 09:25 浏览次数:10

基于互补超螺旋滑模的储能变流器改进自抗扰控制

王嘉力1,曹剑1,田郊2,皇金锋3
(1 西安星源博锐新能源技术有限公司,陕西 西安 710065;
2 维缔技术(西安)有限公司,陕西 西安 710065;
3 陕西理工大学 电气工程学院,陕西 汉中 723001)
 
    摘 要:针对储能变流器在负荷频繁投切、随机大扰动、功率双向流动等复杂工况下引起的系统稳定性差、负载匹配响应速度慢等问题,提出了一种基于互补超螺旋滑模的储能变流器改进自抗扰控制策略以提高系统暂态性能。由于传统观测器跟踪能力有限,设计了一种改进四阶非线性扩张状态观测器,实现对集总扰动更加精准地估计补偿,增强抗扰能力,并利用非线性函数来提高响应速度,同时对观测器参数进行优化选择;结合互补滑模面和超螺旋滑模算法的优点,设计了互补超螺旋滑模反馈控制律以有效地抑制抖振,同时还保证了更强的鲁棒性,并通过选取 Lyapunov 函数对反馈控制律进行稳定性分析;利用仿真和实验对比验证了所提控制策略能很好地抑制直流母线电压波动,提高了交流侧响应速度,并有效地改善储能变流器输出电能质量,提高了系统的暂态性能。
    关键词: 储能变流器;改进四阶非线性扩张状态观测器;互补超螺旋滑模;自抗扰控制;Lyapunov 函数
    中图分类号:TM46     文献标识码:A     文章编号:1007-3175(2025)07-0007-08
 
Improved Active Disturbance Rejection Control of Energy Storage Converter
Based on Complementary Super-Twisting Sliding Mode
 
WANG Jia-li1, CAO Jian1, TIAN Jiao2, HUANG Jin-feng3
(1 Xi’an Xingyuan Bo Rui New Energy Technology Co., Ltd, Xi’an 710065, China;
2 Weidi Technology (Xi’an) Co., Ltd, Xi’an 710065, China;
3 College of Electrical Engineering, Shaanxi University of Technology, Hanzhong 723001, China)
 
    Abstract: Aiming at the problems of poor system stability and slow response speed of load matching caused by frequent load switching,random large disturbance and bidirectional power flow of energy storage converter , an improved active disturbance rejection control strategy of energy storage converter based on complementary super-twisting sliding mode is designed to improve the transient performance of the system. Firstly, due to the limited tracking ability of the traditional observer, an improved fourth-order nonlinear extended state observer is designed to estimate and compensate the lumped disturbance more accurately and enhance the anti-disturbance ability. The nonlinear function is used to improve the response speed, and the observer parameters are optimized. Secondly, combining the advantages of complementary sliding mode surface and super-twisting sliding mode algorithm, a complementary super-twisting sliding mode feedback control law is designed to effectively suppress chattering and ensure stronger robustness. The stability of the feedback control law is analyzed by selecting the Lyapunov function. Finally, through simulation and experiment, it is verified that the proposed control strategy can well suppress the fluctuation of DC bus voltage, accelerate the response speed of AC side, improve the output power quality of energy storage converter and improve the transient performance of the system.
    Key words: energy storage converter; improved fourth-order nonlinear extended state observer; complementary super-twisting sliding mode; active disturbance rejection control; Lyapunov function
 
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