Diretrizes para projeto de bombeamento de água utilizando células fotovoltaicas.

Abstract

Solar energy is a “clean” and renewable option for producing electricity, with water pumping being one of the most widespread technologies for the use of photovoltaic solar energy. The present monograph consists of the use of photovoltaic pumping systems applied to the irrigation of small agricultural units, especially those installed in dry regions and lacking water, which are generally the most favorable in terms of insolation, as is the case in the rural area of Northeast of Brazil. For this, a study was carried out on photovoltaic technology focused on the aspects most pertinent to the application in pumping systems. From the observation of an irrigation system triggered by photovoltaic panels and their data, curves were generated and it was possible to analyze the electric behavior of the pump motor and its pumping capacity, over a day, as a function of the irradiance and also evaluate this behavior by varying the load imposed on the system, which occurs when the irrigation lines are activated. The potential of the use of photovoltaic technology was shown to be relevant in the irrigation of small subsistence agricultural units, both due to the energy potential in the locality where the system was installed and due to the volume capacity of pumped water adequate to the agricultural production.