Application of numerical model of the photovoltaic module to the practical comparative analysis

¹ Kielce University of Technology, Faculty of Management and Computer Modelling, al. 1000-lecia PP 7, Kielce, Poland
² Kielce University of Technology, Faculty of Environmental, Geomatics and Energy Engineering, al. 1000-lecia PP 7, Kielce, Poland

^⁎ Corresponding author: d.krzesimowski@tu.kielce.pl

Abstract

This paper includes a model of photovoltaic module based on a basic catalogue data, taking into account the analysis of series and shunt resistance. These resistances are searched with accuracy 0.001 Ohms, but their influence is taken into account in the electrical parameters for each iteration. In addition, the model takes into account changes in environmental parameters: solar radiation intensity and the operating temperature, for which is sought the optimal operating point of the module. This allows to perform a step towards practical applications of the model, including comparative analysis. In the literature numerical models are used to verify the functioning of the PV modules as a function of voltage or current. In the paper is included description of searching the voltage at which the operating point will achieve maximum power for given environmental parameters. This approach to the issue allows to determine the power plane, on which the inverter should move, and this was the first aim of the work. Moreover, it is therefore possible to compare different PV modules without necessity to build the test stands. The output numerical data for different PV modules can be compared with each other and the best model can be chosen to fulfil the condition of the maximum power per day for the desired geographical location. The ability to perform this kind of analysis is the second aim of the work.