Análise da variação da potência do arranjo fotovoltaico para operação de um inversor projetado

Abstract

Through the development of society it can be said that the use of electricity is one of its main needs. With the accelerated growth of technologies and industrialization, electric energy is indispensable, linked to the concept of sustainable development, the search for alternative sources becomes increasing, with this, there was a greater demand for photovoltaic energy. For this study, the influence of the power variation of the input photovoltaic array on the period of operation of a single­phase inverter was analyzed. The data used were obtained using the PVsyst software. The values of temperature and hourly irradiation were found for the day with the highest and lowest irradiation in each month for the city of Medianeira­PR. Next, the temperature and irradiation were used to plot the I­V and P­V graphs per hour of the CS3W­450MS photovoltaic panel from the Canadian Solar company. All data obtained were exported to Excel so that the analysis could be performed. For the considered inverter to work properly, it is necessary that the minimum voltage at the input is 190V and the current is 1A, and for that an arrangement with 5 panels in series was considered. From the graphs, it can be seen that in January (summer) the inverter would work from 6 am to 6 pm. In the month of July (winter) the panel arrangement provides the voltage and/or current needed only from 8 am to 4 pm. For any change in the panel model or change in location, the analyzes must be carried out to verify the times that present the minimum conditions for the operation of the inverter.