Technical Physics Letters
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Concentrator photovoltaic modules based on short-focus Fresnel lenses with a combined profile
Emelyanov V. M.
1, Levina S. A.
1, Nakhimovich M.V.1, Soluyanov A. A.
1, Shvarts M. Z.
1
1Ioffe Institute, St. Petersburg, Russia
Email: vm.emelyanov@mail.ioffe.ru, levina@mail.ioffe.ru, nmar@mail.ioffe.ru, vinivka442@yandex.ru, shvarts@scell.ioffe.ru
The characteristics of concentrator photovoltaic modules based on short-focus Fresnel lenses (60x 60 mm, F=85 mm) and high-efficient GaInP/GaAs/Ge solar cells have been studied. It is shown that optimization of the lens profile makes it possible to reduce the negative effects of reducing the focal length in the form of an increase in the local radiation concentration. The efficiency of modules based on lenses with a combined profile is higher by 0.7-0.9 abs.% compared to lenses with a classic profile and with a comparable focal length. At acceptance angles above 1o, the characteristics of modules with short-focus lenses will correspond to modules based on lenses with F=125 mm. Keywords: Fresnel lens, lens profile, multijunction solar cell, concentrator photovoltaic module, efficiency, acceptance angle.
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