摘要
文章针对光伏逆变器系统参数辨识,将光伏逆变器视为一个线性系统,以广义最小二乘法为基础,提出一种可变遗忘因子广义最小二乘法。该方法结合实时最小二乘法和广义最小二乘法,可得到准确的光伏逆变器系统模型的参数。最后,利用SG800MX型光伏逆变器的电压和电流数据进行MATLAB仿真实验,验证了方法的实时性和准确性。
In this paper, the photovoltaic inverter system parameter identification is considered as a linear system. Based on the generalized least square method, a variable forgetting factor generalized least square method is proposed. By combining the real-time least square method and the generalized least square method, the parameters of photovoltaic inverter system model can be obtained accurately. Finally, the voltage and current data of SG800 MX photovoltaic inverter are used in MATLAB simulation experiment to verify the real-time and accuracy of the method.
作者
周浩
高懿
陈栋
Zhou Hao;Gao Yi;Chen Dong(Nanjing University of Information Science & Technology,Nanjing 210000,China;Nanjing College of Information Technology,Nanjing 210023,China)
出处
《信息化研究》
2020年第3期46-50,56,共6页
INFORMATIZATION RESEARCH
关键词
参数辨识
线性系统
广义最小二乘法
可变遗忘因子
parameter identification
linear system
generalized least-square method
variable forgetting factor
