Dynamic Simulation of a Stand-Alone Photovoltaic/Battery Energy Storage System

Abstract

Renewable energy is extensively used as primary energy source, in order to meet environmental constraints in a continuously increasing electricity demand framework. This paper presents a model, built in Matlab environment, for a standalone system consisting of a PV array and an electrochemical storage component. Sizing of the elements aimed capturing all the energy generated by the PV panels and being able to meet the load at any time, still considering technical-economic aspects. After having established the general outline, the system was modeled using Simscape/SimpowerSystems blocks to observe the dynamic interaction between the generating component, the storage one and the load. Four types of batteries were used and differences concerning dynamic behavior were discussed.