9-fold Fresnel–Köhler concentrator with Fresnel lens of variable focal point

Descripción (resumen): 

Non-uniform irradiance patterns over Multi-Junction Cells gives rise to power losses, especially when considering spectral irradiance distributions over different junctions. Thermal effects on Silicone-on-Glass lenses affect spectral irradiance distributions. A new Photovoltaic Concentrator (CPV), formed by nine optical channels, each one with a Köhler configuration, has been designed to overcome these effects at high concentrations for a large acceptance angle. A Fresnel Lens with a Variable Focal Point is proposed to prevent optical crosstalk in multichannel systems. When integrated into the concentrator, improves the acceptance angle. These designs are designed to fulfill the expected requirements of four junction CPV systems.

Tipo publicación: 
JRC-SCI Magazine
Publicado en: 
Optics Express Vol. 22, Issue S4, pp. A1153-A1163
Ingeniería óptica
Fecha de Publicacion: 
Julio 2014
Autores CeDInt: