Observatorio de I+D+i UPM

Memorias de investigación
Free-form Fresnel RXI-RR Köhler design for high-concentration photovoltaics with spectrum-splitting
Research Areas
  • Engineering
Development of a novel HCPV nonimaging concentrator with high concentration (>500x) and built-in spectrum splitting concept is presented. It uses the combination of a commercial concentration GaInP/GaInAs/Ge 3J cell and a concentration Back-Point-Contact (BPC) silicon cell for efficient spectral utilization, and external confinement techniques for recovering the 3J cell?s reflection. The primary optical element (POE) is a flat Fresnel lens and the secondary optical element (SOE) is a free-form RXI-type concentrator with a band-pass filter embedded in it - Both the POE and SOE performing Köhler integration to produce light homogenization on the receiver. The band-pass filter transmits the IR photons in the 900-1200 nm band to the silicon cell. A design target of an ?equivalent? cell efficiency ~46% is predicted using commercial 39% 3J and 26% Si cells. A projected CPV module efficiency of greater than 38% is achievable at a concentration level larger than 500X with a wide acceptance angle of ±1º. A first proof-of concept receiver prototype has been manufactured using a simpler optical architecture (with a lower concentration, ~100x and lower simulated added efficiency), and experimental measurements have shown up to 39.8% 4J receiver efficiency using a 3J cell with a peak efficiency of 36.9%.
Entity Nationality
San Diego, EEUU
  • Autor: Marina Buljan . (UPM)
  • Autor: Pablo Benitez Gimenez (UPM)
  • Autor: Ruben Mohedano (Externo)
  • Autor: Juan Carlos Miñano Dominguez (UPM)
  • Autor: Y. Sun (Externo)
  • Autor: W. Falicoff (Externo)
  • Autor: J. Villaplana (Externo)
  • Autor: J. Chaves (Externo)
  • Autor: Guillermo Biot (CeDInt-UPM)
  • Autor: Jesus López (CeDInt-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)