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Proceedings Article

XR: a high-performance PV concentrator

[+] Author Affiliations
M. Hernández, R. Mohedano, O. Dross

Light Prescriptions Innovators Europe (Spain)

P. Benítez, J. C. Miñano

Light Prescriptions Innovators, LLC and Univ. Politécnica de Madrid (Spain)

A. Cvetkovic

Univ. Politécnica de Madrid (Spain)

R. Jones, D. Whelan

The Boeing Co.

G. S. Kinsey

Spectrolab, Inc.

R. Alvarez

Light Prescriptions Innovators, LLC

Proc. SPIE 6649, High and Low Concentration for Solar Electric Applications II, 664904 (September 10, 2007); doi:10.1117/12.736910
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From Conference Volume 6649

  • High and Low Concentration for Solar Electric Applications II
  • Martha Symko-Davies
  • San Diego, CA | August 26, 2007

abstract

The performance of the XR solar concentrator, using a high efficiency multi-junction solar cell developed recently by Spectrolab, is presented. The XR concentrator is an ultra-compact Nonimaging optical design composed of a primary mirror and a secondary lens, which can perform close to the thermodynamic limit of concentration (maximum acceptance angle for a given geometrical concentration). The expected acceptance angle of the concentrator is about ±2 deg for a geometrical concentration of 800x (a Fresnel lens and secondary system typically has ±0.6 deg of acceptance for 300x of geometrical concentration). This concentrator is optimized to improve the irradiance distribution on the solar cell keeping it under the maximum values the cell can accept. The XR concentrator has high manufacturing tolerance to errors and can be produced using low cost manufacturing techniques. The XR is designed with the Simultaneous Multiple Surface (SMS) design method of Nonimaging Optics. Its application to high-concentration photovoltaics is now being developed in a consortium led by The Boeing Company, which has recently been awarded a project by the US DOE in the framework of the Solar America Initiative.

© (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

M. Hernández ; P. Benítez ; J. C. Miñano ; A. Cvetkovic ; R. Mohedano, et al.
"XR: a high-performance PV concentrator", Proc. SPIE 6649, High and Low Concentration for Solar Electric Applications II, 664904 (September 10, 2007); doi:10.1117/12.736910; http://dx.doi.org/10.1117/12.736910


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