DUAL AXIS SUN TRACKING SYSTEM USING PID CONTROLLER

Abstract

This research presents a control application of a sun tracker that is able to follow the sun with high accuracy without the necessity of either a precise procedure of installation or recalibration. The designed tracking system consists of sensors, microcontroller, drivers for stepper motors and gear- bearing arrangements with supports and mountings. Two stepper motors are used to move the system panel so that sun’s beam is able to remain aligned with the solar panel. Simulation and experimental results are obtained to a low cost two axes solar tracker are exposed.Energy savingfactors are taken into account, which implies that, among other factors, the sun is not constantly tracked with the same accuracy, toprevent energy overconsumption by the motors.