Dispositivo de rastreamento solar para a geração descentralizada de eletricidade

Abstract

In most developing countries, decentralized generation can be a viable way to provide electricity. The cost of grid expansion for long distances and small demands make this an expensive procedure. The present article aims to evaluate the performance of an automatic solar tracking mechanism with one degree of freedom in relation to a fixed photovoltaic panel. Due to the simplicity, an open loop system was used for the control of the angular positioning of the tracker. Current and voltage values were collected in two systems (fixed and mobile) every minute and grouped the averages every thirty minutes in the period 6 am to 6 pm. The results demonstrated that the proposed system of solar tracker, with a degree of freedom, showed significant improvement in power, 45.46% in the overcast day and 28.25% for the sunny day with clouds. The photovoltaic panel using solar Tracker had a yield greater than the fixed Panel. The difference in yields was 1.71% for the overcast day and 1.4% for the sunny day with clouds