Modelling and simulation of a stand-alone photovoltaic system

This paper presents a number of models for modelling and simulation of a stand-alone photovoltaic (PV) system. The work has been supported by the no.126/2006 Excellence Grant „Research concerning the achievement of an intelligent railways vehicle for a safe comfortable and efficient passengers transport”. The main activities in this work purpose to establish a library a simple mathematical models for each individual component of a stand-alone PV system, namely solar cells, battery, controller, inverter and load. The implementation is done using Matlab/Simulink, a simulation program that provides a graphical interface for building models as modular block diagrams. Key-Words: modelling, simulation, solar cells, photovoltaic system, PV generator