Diseño energético y simulación de una estación de recarga fotovoltaica con seguimiento solar para bicicletas eléctricas en la EPN

Abstract

The research aims to design and simulate the operation of a stand alone photovoltaic system. Antecedents have shown results of energy gain up to 30% for a grid-connected system that implement 1 axis solar tracking. PVsyst is used together with climate files from the NREL database for the simulation. The analysis developed has inherent shading and incident radiation conditions given by the specific location of the station. The proposed cases perform a sweep of possible sizing scenarios of the system elements, conditions and available solar radiation, from those that are advantageous to those whose conditions are adverse, seeking an adequate energy design of the recharging station. The optimal sizing is shown with 2 panels (200 Wp) and 2 batteries (300Ah), given fundamentally by the user’s energy requirement, radiation conditions and balance in the accumulators operation. The annual energy gain at the generators output is 17% for 2 panels equipped cases and 16% for the case with 3 panels due to shading conditions. The advantages are reflected mainly in a higher average state of charge in the batteries and an autonomy up to a day compared to a fixed arrangement with the same dimensions.