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Proceedings Paper

Performance comparison of Fresnel-based concentrator arrays
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Paper Abstract

At module level (one single solar cell), the Fresnel-Köhler (FK) concentrator comprises a perfect irradiance uniformity along with quite high concentration-acceptance angle product. At the same time, it maintains the efficiency/simplicity of other Fresnel-based concentrators. In this work we will show the FK concentrator has loose manufacturing tolerances as well. All these facts, along with the pill-box shape of its transmission curve, permit an enhanced performance of this device, compared to its competitors, at array level, because the system is more insensitive to manufacturing errors, and current mismatch is less likely to occur. Or the same performance can be achieved at a lower cost, exhausting the tolerance budget by using inexpensive fabrication techniques. Depending on the concentrator, the actual power delivered by an array might drop significantly with respect to the sum of the power delivered by single modules. Under certain circumstances, the FK can reach a 1-10% electrical efficiency increase with regards to other concentrators sharing the same technology.

Paper Details

Date Published: 18 August 2010
PDF: 11 pages
Proc. SPIE 7785, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VII, 778508 (18 August 2010); doi: 10.1117/12.862253
Show Author Affiliations
Rubén Mohedano, Light Prescriptions Innovators Europe, S. L. (Spain)
Aleksandra Cvetkovic, Light Prescriptions Innovators Europe, S. L. (Spain)
Pablo Benítez, Univ. Politécnica de Madrid (Spain)
Light Prescriptions Innovators, LLC (United States)
Pablo Zamora, Univ. Politécnica de Madrid (Spain)
Juan C. Miñano, Univ. Politécnica de Madrid (Spain)
Light Prescriptions Innovators, LLC (United States)
Julio Chaves, Light Prescriptions Innovators Europe, S. L. (Spain)
Maikel Hernandez, Light Prescriptions Innovators Europe, S. L. (Spain)
Marina Buljan, Univ. Politécnica de Madrid (Spain)
Juan Vilaplana, Light Prescriptions Innovators Europe, S. L. (Spain)


Published in SPIE Proceedings Vol. 7785:
Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VII
Roland Winston; Jeffrey M. Gordon, Editor(s)

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