text: Researches on the development of an optical system for improving the efficiency of photovoltaic panels | E3S Web of Conferences
  All issues Volume 180 (2020) E3S Web Conf., 180 (2020) 02008 Abstract
  https://doi.org/10.1051/e3sconf/202018002008
  E3S Web of Conferences 180, 02008 (2020)
  Researches on the development of an optical system for improving the efficiency of photovoltaic panels
  Dana Rizescu, Ciprian Ion Rizescu and Cristian Gabriel Alionte*
  University POLITEHNICA of Bucharest, Mechatronics and Precision Mechanics Department, Splaiul Independentei no. 313, sector 6, Bucharest, Romania.
  The paper aims to create a unit using Fresnel lenses. This module consist of an arrangement of planar-convex Fresnel lenses, made of methyl polymethacrylate, mounted in a hexagonal raster and bent to form a dome for collecting and amplifying solar radiation at several focal points and with the possibility of adjusting the focal distance. The module has three aluminum alloy legs that are vertically adjustable. This construction using Fresnel lenses mounted in a hexagonal raster will increase the energy collected by a photovoltaic panel, thus significantly reducing energy losses and long-term costs. Compared to normal lenses, these lenses are considerably lighter because the material in the center of the lens is reduced, and for manufacturing can be used methyl polymethacrylate or polycarbonate, thus greatly reducing manufacturing costs. To show the functioning of the unit the authors presents in the paper a MATLAB simulation of the Fresnel lens model and a ray propagation.