Análise comparativa de desempenho entre microinversores e inversores de string utilizando o software PVsyst em uma planta fotovoltaica comercial na cidade de Fortaleza-CE

Abstract

To design a photovoltaic (PV) system connected to the grid (SFCR), one must seek the highest possible productivity and with a lower acquisition cost, which meets the energy needs of the user. Thus, in the present work, a comparative performance study was carried out between string inverters and microinverters, with the same installed power, in a commercial consumer unit, using the PVsyst software, in the city of Fortaleza-CE. Therefore, the present work is based on a case study, based on computer simulations in PVsyst, having its database as a reference for climatic and electrical parameters. In addition to the analysis of the main differences between the two technologies and the possible efficiency gains with the system installed with microinverters. As well as the registration, in graphs and tables, of all the data obtained in the simulations. In view of this, it was verified that, in 10 years, the productivity of the system with microinverter reduced by 3.94%, while the productivity of the system with string inverter decreased by 4.03%. Comparatively, the highest performance variation was 2.47% for the microinverter system, even with the same installed power. Thus, it was found that by opting for the installation of microinverters, electricity generation will be more efficient, however, its high initial cost, of 2.98 R$/Wp, does not make it an economically viable option.