光伏并网逆变器NARX模型的系统辨识  

System Identification for NARX Model of Photovoltaic Grid-Connected Inverter

作　　者：郑伟[1] 熊小伏[1] 

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区400044

出　　处：《电网技术》2013年第9期2440-2445,共6页Power System Technology

基　　金：高等学校学科创新引智计划(B08036);输配电装备及系统安全与新技术国家重点实验室自主研究重点项目(2007DA10512711102);输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512709202)的资助~~

摘　　要：提出了一种逆变器辨识建模方法,将单相光伏并网逆变器视为黑箱,无需逆变器内部电路、开关拓扑结构和参数及其控制系统的类型和逻辑关系,仅需采集逆变器输入输出两侧的外部数据,利用NARX模型辨识非线性系统,即可得到逆变器较准确的数学模型。采用该方法在7.68 kW光伏并网发电系统中进行了实验,验证了其正确性和有效性。A new identification and modeling method for single-phase inverter is proposed. Regarding the single-phase inverter of grid-connected photovoltaic （PV） system as a black box, only collecting xtemal data at input and output sides of the single-phase inverter and performing nonlinear system identification by nonlinear auto regressive with exogenous input （NARX） model a relatively accurate mathematical model of the single-phase inverter can be achieved, while the internal circuit and the switch topology and parameters of the single-phase inverter as well as the type and logical relation of its control system are not needed. The experiments of the proposed method are carried out by a grid-connected PV system with capacity of 7.68 kW, and the validity of the proposed method is verified by experimental results

关 键 词：逆变器 光伏系统 黑箱 非线性系统辨识 NARX模型 

分 类 号：TM911[电气工程—电力电子与电力传动]