Study and realization of a control system prototype for a two-axis LDR-based solar tracker*

This article examines solar tracker technology, focusing on how these components are controlled. It begins with a brief overview of photovoltaic solar panels before discussing the many current types and models of solar trackers. It focuses primarily on the design and modeling of the tracker control system, which includes two rotational axes and LDR sensors. In this work, the prototype was made to simplify the use of a tracker in all possible conditions, although the choice to use this technology depends mainly on the physical characteristics of the terrain. The simplification programs take into account the positions of the sun as well as the times of sunset and sunrise, the software constantly predicts this position after a predetermined period, and provides specific instructions to the engine to track the optimal position. This system does not stop at the control of the actuators, a sleep mode has been added for the idle time to optimize the consumption of the motors, also adding to this a reset of the system in the first position of the solar survey according to a single axis (east-west), in making easier the movement of the tracker to the initial position of the next day.