High-flux photovoltaic solar concentrators with kaleidoscope-based optical designs

Harald Ries, J. M. Gordon, Michelle Lasken

    Research output: Contribution to journalArticlepeer-review

    62 Scopus citations

    Abstract

    We propose, analyze and offer sample designs and results for a high-flux photovoltaic concentrator comprised of a large-aperture paraboloidal-dish primary concentrator, and a second-stage kaleidoscope flux homogenizer. The following key design aims are all satisfied: (1) highly uniform irradiance on the solar cell absorber; (2) maximum collection efficiency; and (3) not exceeding the prescribed target flux level (for illustrative purposes here taken to be 500 suns), despite the dish being capable of much higher concentration. As a result of recent advances in the low cost and ease of production of large dish concentrators, the kaleidoscope-based design offers an intriguing alternative to other high-concentration optical designs developed to date. Admissible kaleidoscope geometries are identified. We generate quantitative results for a compact practical design that incurs low optical losses, and produces a highly homogeneous flux map.

    Original languageEnglish
    Pages (from-to)11-16
    Number of pages6
    JournalSolar Energy
    Volume60
    Issue number1
    DOIs
    StatePublished - 1 Jan 1997

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