Photovoltaic (PV) devices are spectrally selective, and their performance is influenced\nby unavoidable spectral variations. In addition, multijunction-based concentrating photovoltaic\n(CPV) devices show a strong spectral dependence due to the series connection of various junctions\nwith different absorption bands, and also due to the use of concentrator optics. In this work,\nthe accuracy of a new set of analytical equations that quantify the spectral impact caused by the\nchanges in air mass (AM), aerosol optical depth (AOD) and precipitable water (PW) is discussed.\nFour different CPV devices based on lattice-matched and metamorphic triple-junction solar cells\nand a poly(methyl methacrylate) (PMMA) and silicon-on-glass (SoG) Fresnel lenses are considered.\nA long-term outdoor experimental campaign was carried out at the Centre for Advanced Studies on\nEnergy and Environment (CEAEMA) of the University of JaÃ?©n, Spain. Results show a high accuracy\nin the estimations of the spectral factor (SF), with an average mean absolute percentage error (MAPE)\nwithin 0.91% and a mean relative error (MRE) within âË?â??0.32%.
Loading....