Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Experimental characterization of Fresnel-Köhler concentrators
Year:2012
Research Areas
  • Engineering
Information
Abstract
Most cost-effective concentrated photovoltaics (CPV) systems are based on an optical train comprising two stages, the first being a Fresnel lens. Among them, the Fresnel-Köhler (FK) concentrator stands out owing to both performance and practical reasons. We describe the experimental measurements procedure for FK concentrator modules. This procedure includes three main types of measurements: electrical efficiency, acceptance angle, and irradiance uniformity at the solar cell plane. We have collected here the performance features of two different FK prototypes (ranging different f-numbers, concentration ratios, and cell sizes). The electrical efficiencies measured in both prototypes are high and fit well with the models, achieving values up to 32.7% (temperature corrected, and with no antireflective coating on SOE or POE surfaces) in the best case. The measured angular transmission curves show large acceptance angles, again perfectly matching the expected values [measured concentration acceptance product (CAP) values over 0.56]. The irradiance pattern on the cell (obtained with a digital camera) shows an almost perfectly uniform distribution, as predicted by raytrace simulations. All these excellent on-sun results confirm the FK concentrator as a potentially cost-effective solution for the CPV market.
International
Si
JCR
Si
Title
Journal of Photonics for Energy
ISBN
0091-3286
Impact factor JCR
1
Impact info
Volume
2
10.1117/1.JPE.2.021806
Journal number
1 (021806)
From page
021806-1
To page
021806-12
Month
OCTUBRE
Ranking
MATERIALS SCIENCE, MULTIDISCIPLINARY (142-239), OPTICS (47-79), PHYSICS, APPLIED (83-127)
Participants
  • Autor: Pablo Zamora Herranz (UPM)
  • Autor: Pablo Benitez Gimenez (UPM)
  • Autor: Rubén Mohedano Mohedano (LPI)
  • Autor: Aleksandra Cvetkovic . (UPM)
  • Autor: Juan Vilaplana (LPI)
  • Autor: Li Yang . (UPM)
  • Autor: Maikel Hernández Sanz (UPM)
  • Autor: Julio Chaves (LPI)
  • Autor: Juan Carlos Mińano Dominguez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Centro de Domótica Integral, CEDINT
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