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Proceedings Paper

New nonimaging static concentrators for bifacial photovoltaic solar cells
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Paper Abstract

Two new static nonimaging designs for bifacial solar cells are presented. These concentrators have been obtained with the Simultaneous Multiple Surface design method of Nonimaging Optics. The main characteristics of these concentrators are: (1) high compactness, (2) linear symmetry (in order to be made by low cost extrusion), (3) performance close to the thermodynamic limit, and (4) a non-shading sizable gap between at least one of the cell edges and the optically active surfaces. This last feature is interesting because this gap can be used to allocate the interconnections between cells, with no additional optical losses. As an example of the results, one design for an acceptable angle of +/- 30 degrees gets a geometrical concentration of 5.5X, with an average thickness to entry aperture width ratio of 0.24. The 3D ray-tracing analysis of the concentrators is also presented.

Paper Details

Date Published: 6 October 1999
PDF: 8 pages
Proc. SPIE 3781, Nonimaging Optics: Maximum Efficiency Light Transfer V, (6 October 1999); doi: 10.1117/12.368256
Show Author Affiliations
Pablo Benitez, Univ. Politecnica de Madrid (Spain)
Maikel Hernandez, Univ. Politecnica de Madrid (Spain)
Ruben Mohedano Arroyo, Univ. Politecnica de Madrid (Spain)
Juan Carlos Minano, Univ. Politecnica de Madrid (Spain)
Fernando Munoz, Univ. Politecnica de Madrid (Spain)

Published in SPIE Proceedings Vol. 3781:
Nonimaging Optics: Maximum Efficiency Light Transfer V
Roland Winston, Editor(s)

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