Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Indoor experimental assessment of the efficiency and irradiance spot of the achromatic doublet on glass (ADG) fresnel lens for concentrating photovoltaics
Research Areas
  • Electronic devices,
  • Technology of devices for engineering,
  • Photovoltaic generation
We present a method to characterize achromatic Fresnel lenses for photovoltaic applications. The achromatic doublet on glass (ADG) Fresnel lens is composed of two materials, a plastic and an elastomer, whose dispersion characteristics (refractive index variation with wavelength) are different. We first designed the lens geometry and then used ray-tracing simulation, based on the Monte Carlo method, to analyze its performance from the point of view of both optical efficiency and the maximum attainable concentration. Afterwards, ADG Fresnel lens prototypes were manufactured using a simple and reliable method. It consists of a prior injection of plastic parts and a consecutive lamination, together with the elastomer and a glass substrate to fabricate the parquet of ADG Fresnel lenses. The accuracy of the manufactured lens profile is examined using an optical microscope while its optical performance is evaluated using a solar simulator for concentrator photovoltaic systems. The simulator is composed of a xenon flash lamp whose emitted light is reflected by a parabolic mirror. The collimated light has a spectral distribution and an angular aperture similar to the real Sun. We were able to assess the optical performance of the ADG Fresnel lenses by taking photographs of the irradiance spot cast by the lens using a charge-coupled device (CCD) camera and measuring the photocurrent generated by several types of multi junction (MJ) solar cells, which have been previously characterized at a solar simulator for concentrator solar cells. These measurements have demonstrated the achromatic behavior of ADG Fresnel lenses and, as a consequence, the suitability of the modelling and manufacturing methods.
Jove-Journal of Visualized Experiments
Impact factor JCR
Impact info
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  • Autor: Guido Vallerotto (UPM)
  • Autor: Marta Victoria Pérez (UPM)
  • Autor: Stephen Askins . (UPM)
  • Autor: Ignacio Anton Hernandez (UPM)
  • Autor: Gabriel Sala Pano (UPM)
  • Autor: Rebeca Herrero Martin (UPM)
  • Autor: Cesar Dominguez Dominguez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Instituto de Energía Solar
  • Departamento: Electrónica Física, Ingeniería Eléctrica y Física Aplicada
  • Departamento: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada
  • Departamento: Ingeniería Telemática y Electrónica
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)