Abstract
Photovoltaic (PV) modules operate at temperatures above ambient owing to the thermal energy of sunlight. The operating temperature primarily depends on the ambient temperature, incident sunlight, mounting configuration, packaging configuration, and wind speed. In this paper, the cumulative thermal degradation is modeled to follow Arrhenius behavior. The data are analyzed to determine the constant temperature that would give average aging equivalent to the variable temperatures observed in the field. These equivalent temperatures are calculated for various locations using six configurations, providing a technical basis for defining accelerated thermal-endurance and -degradation testing. This data may also be useful as a starting point for studies of the combined effects of elevated temperature and other factors such as UV, moisture, and mechanical stress.
Original language | American English |
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Pages (from-to) | 954-965 |
Number of pages | 12 |
Journal | Progress in Photovoltaics: Research and Applications |
Volume | 19 |
Issue number | 8 |
DOIs | |
State | Published - 2011 |
NREL Publication Number
- NREL/JA-520-47673
Keywords
- long-term degradation
- qualification tests
- thermal endurance