CPV and illumination systems based on XR-Köhler devices

Maikel Hernandez; Aleksandra Cvetkovic; Pablo Benitez; Juan Carlos Miñano; Waqidi Falicoff; Yupin Sun; Julio Chaves; Ruben Mohedano

doi:10.1117/12.861968

18 August 2010 CPV and illumination systems based on XR-Köhler devices

Maikel Hernandez, Aleksandra Cvetkovic, Pablo Benitez, Juan Carlos Miñano, Waqidi Falicoff, Yupin Sun, Julio Chaves, Ruben Mohedano

Author Affiliations +

Proceedings Volume 7785, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VII; 77850A (2010) https://doi.org/10.1117/12.861968
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

The XR-Köhler concentrator1 is a design that has the possibility to work under high concentration, maintaining the high acceptance angle and high irradiance uniformity on the solar cell. It is an on-axis free-form design that consists of a reflective (X) and refractive (R) surface. For a geometrical concentration of about 800x the simulated results show an acceptance angle of ±1.79deg with high irradiance uniformity on the solar cell. This article shows the design results of the XR-Köhler and also a novel passive cooling system (LPI patented) that keeps the solar cell operation temperature under 100°C at extreme conditions (wind speed = 0 m/s, module tilt angle = 45deg and T_a = 50°C). The results of using the XR-Köhler device as a collimator when the light source has very high non-uniform luminance distribution, i.e. multichip LEDs, are also here presented.

Citation Download Citation

Maikel Hernandez, Aleksandra Cvetkovic, Pablo Benitez, Juan Carlos Miñano, Waqidi Falicoff, Yupin Sun, Julio Chaves, and Ruben Mohedano "CPV and illumination systems based on XR-Köhler devices", Proc. SPIE 7785, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VII, 77850A (18 August 2010); https://doi.org/10.1117/12.861968

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