Meraj Rajaee - Professor, Electrical Engineering faculty of Dr Shariaty Technical University
Behnoosh Meskoob - Student, Electrical Engineering faculty of Dr Shariaty Technical University

The emergence of novel power generation systems using sunlight is vastly noteworthy. In this paper we proposed a unique photovoltaic solar cell system consisted of semi-Fresnel lens convergent structure and innovative two axis sun tracking module to enhance the efficiency of solar cell while using less cell area and preventing loss of energy. The grooves of this lens arecalculated according to the refraction and convergent angles of the light easy for perpendicular incidence angle. Then an inventive sun tracking method is introduced to adjust the module so that the incidentways are always perpendicular to themodule’s surface. As a result, all ways will be refracted with the predetermined angles. This way the focus area is reduced and smaller cells can be used. We also mentioned different module connections in order to provide compensation methodduring losses, for networks and powersystems. Experimental results show that using Semi-Fresnel lens, along with the sun tracking method increase the efficiency of PV panel.

Fresnel-based Lens, Sun-Tracking, Photovoltaic Panel Incidence Angle, Efficiency