Diseño de un sistema de control difuso de seguimiento solar de dos ejes.

Abstract

In this study, a two-axis solar tracking system with diffuse controller was designed to make the best use of solar radiation, the proposed technology and innovation implemented a solar tracking system of axes controlled by diffuse algorithm. This system allows the sun´s trajectory to be followed throughout the entire day, to optimize capturing solar energy in comparison to fixedorientation solar panels, which are the most commonly used in or country. The diffuse control is

implemented via a platform developed in LabVIEW. This control involves the entry of two signals

corresponding to the position error with both latitude an azimuth and two output signals generated

in the diffuse control to control two stepper motors that allow for

these errors to be corrected,

resulting in continuous monitoring of the solar path. The diffuse system corresponds to the MIMO

system (multiple input, multiple output). In order to verify the hypothesis that a solar panel located

on a two-axis solar tracker makes better used of solar energy as compared to a fixed-orientation

panel, a prototype was constructed. A solar panel was mounted and solar readings were taken for

three

days at fixed intervals. The measurements taken from the panel located on the tracking system and the fixed panel were compared, then the nonparametric Mann-Whitney U test was used, which compares medians and not means, as the distribution given by the sun does not have a normal distribution. The proposed system had a higher yield with 10.66% solar energy uptake obtained as compared to a fixed panel. In future research this present study can be taken as a reference to investigate the application of other possible control algorithms, for example a continuous PID controller, digital PID controller or a discrete controller.