Efficiency Evaluation of 3 kW Photovoltaic Rooftop and Grid Connected System by Using PVsyst Programmed Modeling Simulation

Abstract

This article presents the efficiency study of a 3 kW PV rooftop and grid connected system via program simulation technique which system will be setup in Pa-phayom region of Phathalung province. To evaluate a performance of this system, a model simulation is archived by Pvsyst program depending on the conditions of type of PV module, direction orientation and tilt orientation of the solar panels. The research study was found that the electrical energy producing per day or array yield was exceed to 5.0 kWh/kWp/day in March to June as 4.855 MWh/year. And performance ratio (PR) was 81.1% per year in an average. PV efficiency of a selected poly-crystalline silicon was 1 5 .4 6% and suitable supporting by 3.0 kW grid inverter.
Furthermore, the collecting intensity of solar energy and system efficiency were optimum when the solar panels were oriented in the south-east direction and tilt orientation at 20 degree as the annual yield of 1,700 kWh/m2