Automatic Irrigation System with PV Solar Tracking

Abstract

Abstract— The objective of this paperis to design and costruct an automatic irrigation system powered by PV panelson a laboratory level. A humidity sensor in the soil  and temperature sensors in the air are usedto check the need for irrigation in order to operate  a pump powered by the PV system. This PVsystem is a two axis solar tracking one. Sensors are installed on PV panels tocheck the position of the sun so that PV panels are always perpendicular to thesun. This control is made by means of a microcontroller. The whole system isfirst simulated by ISIS simulation software to validate the final controlalgorithem to be implemented. A particular attention has been given to thesolar tracking system. Experimental study is carried out to evaluate theperformance of the tracking system in laboratory by using a light source tosimulate the sun.These results show  thevalidity of the control of the irrigation system and the PV panels are alwaysnormal to the light source.