Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
CFK: a Fresnel-Köhler concentrator with an external confinement cavity
Year:2015
Research Areas
  • Engineering
Information
Abstract
In a concentrator photovoltaic (CPV) module, the solar cell surface reflects a non-negligible portion of the incoming light, leading to a loss in module efficiency. The Fresnel-Kóhler with an external confinement cavity (CFK) is a novel optical CPV concentrator designed to recover this portion of the reflected light. The design is based on an external confinement cavity, an optical element able to redirect the light reflected by the cell surface towards its surface again. Its integration into a CPV module is possible, thanks to the recent invention of advanced Kohler concentrators by LPI. This strategy, based on light recovery, leads to a significant increase in electrical efficiency. We have tested the excellent performance of these cavities by means of integrating one of them into an FK concentrator and manufacturing a proof-of-concept prototype. The measured results are outstanding: a relative electrical efficiency and Ise gains of up to 6% when comparing both with and without cavity designs, and a 33.2% of CFK module electrical efficiency (@Tcell=25 DC) using a 38.5% nominal efficiency cell (without anti-reflection coatings on the optics).
International
Si
JCR
Si
Title
Progress in Photovoltaics
ISBN
1062-7995
Impact factor JCR
9,696
Impact info
Volume
Journal number
From page
66
To page
73
Month
SIN MES
Ranking
ENERGY & FUELS (4-88), MATERIALS SCIENCE, MULTIDISCIPLINARY (259-18), PHYSICS, APPLIED (143-11)
Participants
  • Autor: Marina Buljan . (UPM)
  • Autor: Pablo Benitez Gimenez (UPM)
  • Autor: Li Yang . (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería Óptica
  • Centro o Instituto I+D+i: Centro de Domótica Integral, CEDINT
  • Departamento: Electrónica Física
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)