孤岛模式单相光伏并网逆变器自抗扰控制策略  

Design of controller based on ADRC strategy under islanding mode for single-phase PV grid-connected inverter

作　　者：何国锋 He Guofeng(College of Electrical and Control Engineering,Henan University of Urban Construction,Pingdingshan467036,China)

机构地区：[1]河南城建学院电气与控制工程学院,河南平顶山467036

出　　处：《可再生能源》2021年第6期790-796,共7页Renewable Energy Resources

基　　金：河南省科技厅项目(192102210231);国家自然科学基金项目(61803145)。

摘　　要：为抑制光伏并网逆变器在孤岛模式下的扰动,提高系统的抗扰动态性能,文章设计了一种改进的单相微网逆变器自抗扰控制器。该控制器基于系统扰动模型,设计同步旋转坐标系下逆变器的自抗扰控制参数,并分析逆变器对负载扰动的动态抑制性能。最后利用dSPACE搭建相应的仿真试验系统,仿真和试验结果表明,所提控制策略能有效抑制扰动,提高了系统的抗扰动态性能。In order to effectively suppress the disturbances of PV inverter under islanding mode,improving the dynamic performance of rejecting disturbance,an improved designing method for micro-grid inverter controller with active-disturbance rejection control(ADRC)is proposed in this paper.From the perspective of restricting system disturbance,this paper analyzes the variety of disturbance sources existing under the operating of micro-grid inverter,and focuses on the detailed analysis of the impact of load disturbance.The mathematical model of micro-grid inverter under the synchronization reference frame is constructed.According to the constructed mathematical model,the active-disturbance rejection controller is designed,and the dynamic performance on resisting disturbance.Finally,the corresponding experimental system is built in the dSPACE semi-physical simulation system,and the simulation and experimental results show the proposed control strategy can effectively suppress the disturbances and enhance the dynamic performance of single-phase PV grid inverter.

关 键 词：单相并网逆变器 孤岛模式 自抗扰控制器 系统扰动 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]