光伏并网系统直流母线自抗扰稳压控制  

ADRC-based Stabilization Control for DC Bus of PV Grid-connected System

作　　者：徐展策 许巍 XU Zhance;XU Wei(XilinGol League Branch of Inner Mongolia Power(Group)Co.,Ltd.,Xilinhot 026000,Nei Mongol,China)

机构地区：[1]内蒙古自治区锡林郭勒供电公司,内蒙古锡林浩特026000

出　　处：《电气传动》2025年第4期48-55,共8页Electric Drive

摘　　要：针对光伏并网逆变器系统在多扰动情况下运行的问题,提出了一种集成光伏逆变器模型的线性自抗扰控制(LADRC-PM)策略。首先,对光伏并网系统的动态过程进行了分析与建模,并结合光伏系统的模型特征设计了LADRC-PM结构,在经典结构基础上进一步改进了快速性。然后,在双闭环控制框架的基础上引入该结构,使系统能够通过前馈的方式补偿扰动,以增强系统对不确定性的抑制能力。再者,通过频域分析法对所提控制策略的数学模型进行了动态分析,在理论上验证了其工程稳定性、跟踪收敛性以及抗扰优越性,并以此给出了一些参数的整定指导。最后,通过Matlab/Simulink平台仿真验证了LADRC-PM在不同场景下的优越性。Aiming at the problem that the photovoltaic grid-connected inverter system operates under multiple disturbances,an linear active disturbance rejection control(LADRC)grid-connected strategy combined with photovoltaic system was proposed.Firstly,the dynamic process of PV grid-connected system was analyzed and modeled,and the LADRC-PM structure was designed according to the model characteristics of the photovoltaic system,further improving the speed on the basis of the classical structure.And then,the structure was introduced on the basis of the double closed-loop control framework,so that the system could compensate the disturbance through the feedforward way to enhance the system ability to suppress the uncertainty.Furthermore,the mathematical model of the proposed control strategy was dynamically analyzed using frequency domain analysis method,and its engineering stability,tracking convergence,and disturbance rejection superiority were theoretically verified,and the guidance of adjusting some parameters was given.Finally,the advantages of LADRC-PM control strategy was verified by the Matlab/Simulink simulation in various working conditions.

关 键 词：光伏并网 一阶自抗扰控制 模型分析与结合 多工况暂态测试 

分 类 号：TM28[一般工业技术—材料科学与工程]