Análise do fator de dimensionamento de inversores em sistemas fotovoltaicos conectados à rede de distribuição

Abstract

This work of course completion presents an analysis of the design of inverters for grid connected photovoltaic systems (SFCR) through the Inverter Dimensioning Factor (FDI) and merit indices. The FDI is evaluated according to the location of operation, since higher irradiation rates tend to require greater use of the inverter. As the photovoltaic system rarely operates at its maximum power level and the current inverters allow subimissioning, there is the possibility of varying cost / benefit of the installed system. Thus, in this work 4 systems from different locations were analyzed, searching for the best relation between inverter and photovoltaic generator, which are obtained by the ratio kWh / kWp.The main results pointed out that the under-dimensioning of the system, the initial investment will be smaller, having a reduced number of investors. In the study the installation of a photovoltaic module power higher than the inverter power allowed the inverter to provide a higher power than the rated power, which is limited by the maximum power or peak power of the inverter, which is also supplied by the manufacturer. In the production of energy, it was noted that the undersized inverter made it possible to generate more energy. Despite the results, it is important to emphasize that FDI is very important for a SFCR, and that it depends a lot on the locality due to the climate (radiation and temperature).