基于线性自抗扰光伏逆变器的并网电流控制研究  

Grid-connected current control of photovoltaic inverter based on linear active disturbance rejection control

作　　者：何国锋 韩耀飞 赵庆玉 申慧方 樊晓虹 余发山[2] He Guofeng;Han Yaofeil;Zhao Qingyu;Shen Huifang;Fan Xiaohong;Yu Fashan(College of Electrical and Information Engineering,Henan Engineering Research Center of Intelligent Power Transmission and Distribution and Power Conversion,Henan University of urban construction,Pingdingshan 467036,China;School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]河南城建学院电气与控制工程学院河南省智能输配电与功率变换工程研究中心,河南平顶山467036 [2]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《可再生能源》2018年第7期1017-1021,共5页Renewable Energy Resources

基　　金：国家自然科学基金(61503122);河南省科技攻关计划项目(172102210179;162102210098)

摘　　要：针对光伏并网逆变器存在内部不确定性和外部扰动的问题,文章提出了线性自抗扰控制器对并网电流进行跟踪控制。首先,基于全桥光伏逆变器的并网拓扑建立了二阶线性自抗扰控制模型,并对其控制参数进行分析、整定。然后,利用二阶线性自抗扰控制器提高系统的鲁棒性。最后在Matlab/Simulink搭建模型,仿真结果表明:控制策略能对并网电流快速跟踪,并有效抑制扰动。In order to suppress the internal uncertainties and external disturbances in photovoltaic grid-connected inverter, this paper presents a linear auto-disturbance rejection control strategy for on-line current tracking. Based on the topology of the full-bridge photovoltaic inverter, a second-order linear auto-disturbance-rejection control model is established, and its control parameters are analyzed and optimized. Then the robustness of the system is improved by the fast tracking of the second-order linear auto-disturbance rejection controller. Finally, the linear auto-disturbance-rejection control system is simulated by Matlab/Simulink.The simulation results show that the linear auto-disturbance rejection control strategy can quickly track the grid current,and meanwhile can effectively suppress the internal uncertainty and external disturbance.

关 键 词：并网逆变器 线性自抗扰控制 内部不确定性 外部扰动 鲁棒性 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]