New Investigation on the Applications and Computer Simulation of Photovoltaic Cells and Storage Systems

Abstract

A complete model is proposed as a tool to simulate and optimize photovoltaic cells and storage systems. The normalized form of the equations with respect to the battery capacity allows us to generalize its use for any type and size of batteries. The validity of this model to represent the bat tery voltage evolut ion dur ing charge, overcharge and discharge processes and to predict the performance of solar systems under different operational conditions is analyzed. Moreover, the battery efficiency losses are presented as a function of the upper regulation thresholds of the charge controllers and the size of the array and storage systems in a domestic application in the climate of Egypt.