Inicio  /  Applied Sciences  /  Vol: 12 Par: 9 (2022)  /  Artículo
ARTÍCULO
TITULO

Experimental Investigation of Azimuth- and Sensor-Based Control Strategies for a PV Solar Tracking Application

Nasir G. Hariri    
Mohammed A. AlMutawa    
Ibrahim Sufian Osman    
Ibrahim K. AlMadani    
Abdulilah M. Almahdi and Sajid Ali    

Resumen

Today, the world continuously investigates the promising potential of advanced and optimized technologies for harvesting green renewable energy sources, such as a solar tracking system (STS). This study presents an actual implementation of a single-axis solar tracking system (SAST), where an azimuth control scheme is developed to precisely follow the sun?s orientation. This is demonstrated by computing in real-time the optimal azimuth angle based on the actual altitude, date, and time using an embedded microcontroller. At the same time, experimental comparisons using the azimuth-based control method compared with the proportional, integral, derivative (PID) control scheme and fixed-tilt PV systems (FTPV) are derived. Experimental results show that the developed azimuth solar tracker can autonomously follow the sun?s orientation primarily from time and location-based information and independent from the actual solar irradiance. Nevertheless, the electrical energies gained from all three tested systems revealed that using the sensor-based STS would increase the net energy production by 12.68% compared to the azimuth-based SAST, with an energy production increase of 7.7%. In addition, energy consumption by the azimuth-based STS is 65% greater than the energy consumption of a sensor-based STS due to the continuous movements of the tracker, regardless of the increase or change in power production within short periods.

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