基于PCHD模型的三相光伏LCL并网逆变器自适应模糊无源控制研究  

Adaptive fuzzy passive control of three-phase photovoltaic LCL grid-connected inverter based on PCHD model

作　　者：黄伟[1] 张代润[1] 杜仕海 何江涛 Huang Wei;Zhang Dairun;Du Shihai;He Jiangtao(School of Electrical Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学电气工程学院,成都610065

出　　处：《电测与仪表》2021年第10期140-144,共5页Electrical Measurement & Instrumentation

摘　　要：针对传统PI控制下三相并网逆变器的鲁棒性较差的问题,文中首先建立了基于LCL滤波器的三相两电平变流器的端口受控哈密尔顿(PCHD)数学模型,根据建立的PCHD模型采用互联和阻尼配置(IDA-PBC)的无源控制方法,设计了无源控制器,通过李亚普洛夫第二方法验证了系统的稳定性,并且为了加强对直流侧电压的控制能力,采用了模糊控制。最后,在Matlab/Simulink中搭建了基于模糊控制的无源仿真模型,验证了该控制策略的鲁棒性和有效性。Aiming at the problem of poor robustness of three-phase grid-connected inverter under traditional PI control,this paper firstly establishes a port-controlled Hamiltonian with dissipation(PCHD)mathematic model of three-phase two-level converter based on LCL filter,and then,establishes adopts the passive control method of interconnection and damping configuration(IDA-PBC)based on the establisheil PCHD model,and designs the passive controller.The stability of the system is verified by the second method of Lyapulov,and fuzzy control is adopted to strengthen the control ability of the DC side voltage.Finally,a passive simulation model based on fuzzy control is built in Matlab/Simulink,which verifies the robustness and effectiveness of the proposed control strategy.

关 键 词：光伏并网逆变器 端口受控哈密尔顿 互联和阻尼配置 模糊控制 

分 类 号：TM615[电气工程—电力系统及自动化]