Obtaining dynamic Norton parameters of a solar panel from manufacturer data

Abstract

Photovoltaic arrays have been shown to possess significant influence on the dynamic performance of coupled sourceconverter- load system while its dynamic resistance is the most important parameter, contributing to the overall system dynamics. In this paper, a method of deriving the parameters of linearized photovoltaic equivalent circuit from manufacturer data is proposed. The approach allows predicting the range of dynamic Norton parameters for the expected irradiation and temperature operation conditions thus defining clear bounds required for robust design of the system controller.