Optical efficiency study of PV crossed compound parabolic concentrator

Nazmi Sellami, Tapas K Mallick

    Research output: Contribution to journalArticle

    81 Citations (Scopus)

    Abstract

    Static solar concentrators present a solution to the challenge of reducing the cost of Building Integrated Photovoltaic (BIPV) by reducing the area of solar cells. In this study a 3-D ray trace code has been developed using MATLAB in order to determine the theoretical optical efficiency and the optical flux distribution at the photovoltaic cell of a 3-D Crossed Compound Parabolic Concentrator (CCPC) for different incidence angles of light rays. It was found that the CCPC with a concentration ratio of 3.6x represents an improved geometry compared to a 3-D Compound Parabolic Concentrator (CPC) for the use as a static solar concentrator. The CCPC has a maximum optical efficiency of 95%, in line with the optical efficiency of the 3-D CPC, with the added advantage of having a square entry and exit aperture. A series of preliminary experimental measurements were taken on a setup of nine solar cells. The experimental results provide validation of the MATLAB code developed, showing a deviation of 12 +/- 2% from the simulation results, thus confirming that the code can be used to investigate different concentration ratios of the CCPC. (c) 2012 Elsevier Ltd. All rights reserved.

    Original languageEnglish
    Pages (from-to)868-876
    Number of pages9
    JournalApplied Energy
    Volume102
    DOIs
    Publication statusPublished - Feb 2013

    Keywords

    • CPC
    • Building integration
    • Photovoltaics
    • Optical modelling
    • Ray trace
    • PERFORMANCE

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