Análise de desempenho de diferentes tecnologias de módulos fotovoltaicos em função da inclinação para a cidade de Porto Alegre-RS

Abstract

The fat the Brazil presents a major photovoltaic solar energy generation, allied to the increasing energy demand, it makes necessary the correct and efficient photovoltaic modules electric characterization. This characterization is important to the determination of the I-V curve (current-tension), as well as in other parameters (Yield Factor Yf, capture losses Lc and performance ratio PR) for the estimate energy productivity. This study describes the methodology utilized for the characterization of four photovoltaic modules technologies (monocrystalline, polycrystalline, CIGS and amorphous silicon) and an energy productivity analysis for the city of Porto Alegre – RS. For that, was stipulated a 1kW peak photovoltaic generator, considering a grid-connected system with a Sizing Factor (FDI) equal to 1,0. Using the PVsyst software, Power productivity was quantified due to the installation inclination and the azimuthal variation. The results analysis took in account three parameters: module productivity, capture losses, performance ratio of the system. Several positioning configurations and modules installation inclination were analyzed. Posteriorly, a comparison was made between the results gathered according to the power productivity in the reference position, which consists in installing the modules to the geographic north with inclination close to the local latitude. The research indicates that the monocrystalline e polycrystalline modules present good performance when oriented between east and west with inclination angles up to 40º. The CIGS and a-Si modules present good ratio when oriented north and west with inclination angles up to 30º