Abstract
Several studies have found indications that PV degradation may increase in hotter climates. We show in this paper that degradation does correlate to higher module temperatures, but that these temperatures are significantly affected by the module mounting and. The mechanisms of degradation vary with module technology and quality. Using data from different HIT module installations we were able to extract an activation energy that is consistent with hydrogen passivation layer degradation. In addition, we show that low degradation in hot climates can be achieved for Al-BSF technology if properly installed to reduce heat transfer in order to thermally decouple the modules from the roof. We also found that monofacial and bifacial PERC module degradation is in line with historical degradation rates of Al-BSF.
Original language | American English |
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Pages | 673-679 |
Number of pages | 7 |
DOIs | |
State | Published - Jun 2019 |
Event | 46th IEEE Photovoltaic Specialists Conference, PVSC 2019 - Chicago, United States Duration: 16 Jun 2019 → 21 Jun 2019 |
Conference
Conference | 46th IEEE Photovoltaic Specialists Conference, PVSC 2019 |
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Country/Territory | United States |
City | Chicago |
Period | 16/06/19 → 21/06/19 |
Bibliographical note
Publisher Copyright:© 2019 IEEE.
NREL Publication Number
- NREL/CP-5K00-73155
Keywords
- bifacial
- Degradation rate
- durability
- module temperature
- PERC
- PV field performance