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   Analysis and Implementation of A New Method To Increase the Efficiency of Photovoltaic Cells By Applying A Dual Axis Sun Tracking System and Fresnel Lens Array  
   
نویسنده Rajaee Meraj ,Rabiee Sahel
منبع Journal Of Optoelectronical Nanostructures - 2021 - دوره : 6 - شماره : 3 - صفحه:59 -80
چکیده    Nowadays conversion efficiency of photovoltaic (pv) equipment is considered as an important issue. in this article, the effects of a semi-fresnel lens as a convergent structure will be simulated in comsol multiphysics software and the results would make improvements in the characteristic responses of pv cells which are verified with our experimental results. besides, because the groove angles of the semi-fresnel lens are calculated based on the orthogonal sun rays, a novel dual-axis sun tracking system has been designed and constructed for panel orientation adjustment. so, the sun rays always radiate at the same efficient angles on pv cells. this issue leads to a reduction in light concentration area, the total area of the cells and their costs. results show a significant improvement in output power of the pv cells array in comparison to the previous study by more than 2.5 times. also, the effective time of cell performance from sunrise to sunset, extends longer during a day, regardless of location and time zone.
کلیدواژه Comsol Multiphysics ,Semi-Fresnel Lens ,Solar Cell ,Sun Tracking System
آدرس Technical AndVocational University (Tvu), Department Of Electrical And Computer Engineering, Iran, Amirkabir UniversityOf Technology, Department Of Energy Engineering And Physics, Iran
پست الکترونیکی sahel.rabiee@yahoo.com
 
 

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