Outdoor energy ratings and spectral effects of photovoltaic modules

Radhika Lad, John Wohlgemuth, Govinda Samy TamizhMani

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    9 Scopus citations


    A temperature and irradiance matrix of performance parameters of a photovoltaic (PV) module can be used to predict the energy produced by that module. The matrix of these parameters is usually obtained through a series of indoor current-voltage (I-V) measurements using temperature and irradiance controlled equipment. In the current work, a series of periodical (every 30 minutes) I-V curves were obtained with varying irradiance and temperatures under prevailing day-long outdoor test conditions over a year. The I-V curves thus obtained were translated to the reporting temperature-irradiance matrix conditions as required per IEC 61853 draft standard. The variation of spectrum of natural sunlight over a period of one year and its influence on the performance parameters of various technologies are presented. A thermal model to predict module temperature under MPPT condition is also presented.

    Original languageEnglish (US)
    Title of host publicationProgram - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010
    Number of pages6
    StatePublished - Dec 20 2010
    Event35th IEEE Photovoltaic Specialists Conference, PVSC 2010 - Honolulu, HI, United States
    Duration: Jun 20 2010Jun 25 2010

    Publication series

    NameConference Record of the IEEE Photovoltaic Specialists Conference
    ISSN (Print)0160-8371


    Other35th IEEE Photovoltaic Specialists Conference, PVSC 2010
    Country/TerritoryUnited States
    CityHonolulu, HI

    ASJC Scopus subject areas

    • Control and Systems Engineering
    • Industrial and Manufacturing Engineering
    • Electrical and Electronic Engineering


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