Comparison of Performance of Tracked and Fixed Photovoltaic Modules

Abstract

The main objective of this study work was to compare between tracked and fixed photovoltaic modules. In terms of power output and to investigate the efficiency of tracking. A pyronometer was placed on the tracker to compare the
beam radiations readings with the maximum theoretical beam radiation at the location. A 50W photovoltaic module was attached onto both tracked and fixed system. The inclination of the modules was 15.50 to facing the south. The tests
were conducted at the premises of National Energy Research Center .the tracked modules followed the sun from 9.00am to 5.00pm. The results showed that the average of tracking efficiency was 92% compared with theoretical calculated
radiation. The photovoltaic module comparison test showed that the tracker is the most effective in the morning hours from 9.00 to 12.00 hours and in the afternoon from 15.00 to 17.00 hours because the tracker makes solar radiation perpendicular to solar cell.