9-fold Fresnel-Köhler concentrator for increased uniform irradiance on high concentrations

João Mendes-Lopes; Pablo Benítez; Pablo Zamora; Juan Carlos Miñano

doi:10.1117/12.2024156

9 September 2013 9-fold Fresnel-Köhler concentrator for increased uniform irradiance on high concentrations

João Mendes-Lopes, Pablo Benítez, Pablo Zamora, Juan Carlos Miñano

Proceedings Volume 8821, High and Low Concentrator Systems for Solar Electric Applications VIII; 88210F (2013) https://doi.org/10.1117/12.2024156
Event: SPIE Solar Energy + Technology, 2013, San Diego, California, United States

Abstract

Non-uniform irradiance patterns created by Concentrated Photovoltaics (CPV) concentrators over Multi-Junction Cells (MJC) can originate significant power losses, especially when there are different spectral irradiance distributions over the different MJC junctions. This fact has an increased importance considering the recent advances in 4 and 5 junction cells. The spectral irradiance distributions are especially affected with thermal effects on Silicone-on-Glass (SoG) CPV systems. This work presents a new CPV optical design, the 9-fold Fresnel Köhler concentrator, prepared to overcome these effects at high concentrations while maintaining a large acceptance angle, paving the way for a future generation of high efficiency CPV systems of 4 and 5 junction cells.

Citation Download Citation

João Mendes-Lopes, Pablo Benítez, Pablo Zamora, and Juan Carlos Miñano "9-fold Fresnel-Köhler concentrator for increased uniform irradiance on high concentrations", Proc. SPIE 8821, High and Low Concentrator Systems for Solar Electric Applications VIII, 88210F (9 September 2013); https://doi.org/10.1117/12.2024156

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