Impact of Non-Uniform Irradiance and Temperature Distribution on the Performance of Photovoltaic Generators

Petrakis Thomas, Aphrodite Ktena, Panagiotis Kosmopoulos (), John Konstantaras and Michael Vrachopoulos
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Petrakis Thomas: General Department, National and Kapodistrian University of Athens, Evripos Campus, 34400 Psachna, Greece
Aphrodite Ktena: General Department, National and Kapodistrian University of Athens, Evripos Campus, 34400 Psachna, Greece
Panagiotis Kosmopoulos: Institute for Environmental Research and Sustainable Development of the National Observatory of Athens, 15236 Athens, Greece
John Konstantaras: Renewable Energy Sources Laboratory, General Department of the National and Kapodistrian University of Athens, 34400 Psachna, Greece
Michael Vrachopoulos: Renewable Energy Sources Laboratory, General Department of the National and Kapodistrian University of Athens, 34400 Psachna, Greece

Energies, 2023, vol. 16, issue 17, 1-20

Abstract: The use of photovoltaic (PV) panels has increased rapidly in the last few years and as a result has become one of the main sources of renewable energy. In this context, it is important to understand in detail how a PV panel reacts to different environmental conditions and how these affect total performance. An experiment has been designed to investigate the performance of a PV panel under various highly non-uniform temperature and irradiance profiles, generated by artificial lighting. Measurements of irradiance and temperature distribution are related to measured I–V curves and used as input to the five-parameter model. The results show the limitations of the model to emulate the PV response under such extreme conditions and provide useful insights about the effect of the temperature profile on the PV performance.

Keywords: photovoltaic generator; non-uniform solar irradiation; non-uniform temperature distribution; incidence angle; single-diode model; photovoltaic surface temperature imaging (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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