储能双向DC-DC变换器滑模自抗扰控制  

Sliding Mode Active Disturbance Rejection Control for Bidirectional DC-DC Converter in Energy Storage System

作　　者：冯志强 谭功全 庞宏杰 瞿崎 Feng Zhiqiang;Tan Gongquan;Pang Hongjie;Qu Qi(School of Automation and Information Engineering,Sichuan University of Science&Engineering,Yibin,Sichuan 644300,China;Artificial Intelligence Key Laboratory of Sichuan Province,Yibin,Sichuan 644300,China)

机构地区：[1]四川轻化工大学自动化与信息工程学院,四川宜宾644300 [2]人工智能四川省重点实验室,四川宜宾644300

出　　处：《黑龙江工业学院学报(综合版)》2025年第2期126-131,共6页Journal of Heilongjiang University of Technology(Comprehensive Edition)

基　　金：企业信息化与物联网测控技术四川省高校重点实验室项目(项目编号:2022WZJ02)。

摘　　要：针对双向直流-直流(DC-DC)变换器在光伏储能微电网系统造成的直流母线电压波动大、动态响应缓慢、抗干扰能力弱等问题,设计了一种滑模自抗扰控制方法,采用电压电流双闭环控制策略。首先,利用变结构理论建立双向DC-DC变换器的数学模型。其次,电流内环采用线性自抗扰控制,利用线性扩张状态观测器对系统扰动进行估计,提高系统的动态响应速度和抗干扰能力;电压外环采用超螺旋滑模控制,提高控制器的快速性和鲁棒性,并利用李雅普诺夫函数进行稳定性证明。最后,通过MATLAB/Simulink平台仿真,分析对比不同工况中控制策略的有效性。仿真结果表明,该控制方法能有效提升直流母线电压的跟踪性能和扰动抑制能力,减轻直流母线电压的波动范围,提高储能系统的充放电性能。To address the issues of significant DC bus voltage fluctuations,slow dynamic response,and weak disturbance rejection capability caused by the bidirectional DC-DC converter in photovoltaic energy storage microgrid systems,a sliding mode active disturbance rejection control method is designed by utilizing a dual-loop control strategy for voltage and current.First,a mathematical model of the bidirectional DC-DC converter is established based on variable structure theory.Then,the inner current loop adopts linear active disturbance rejection control,employing a linear extended state observer to estimate system disturbances,improving dynamic response speed and disturbance rejection capability.The outer voltage loop employs super-twisting sliding mode control to enhance the controller′s speed and robustness,with stability proven using the Lyapunov function.Finally,simulations on the MATLAB/Simulink platform are conducted to analyze and compare the effectiveness of the control strategy under different operating conditions.The simulation results show that this control method effectively improves the tracking performance of the DC bus voltage and disturbance rejection capability,reduces the fluctuation range of the DC bus voltage,and enhances the charging and discharging performance of the energy storage system.

关 键 词：光伏储能 双向DC-DC变换器 自抗扰控制 滑模控制 

分 类 号：TM46[电气工程—电器] TP273[自动化与计算机技术—检测技术与自动化装置]