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Abstract
An acceleration model based on the Peck equation was applied to power performance of crystalline silicon cell modules as a function of time and of temperature and humidity, which are the two main environmental stress factors that promote potential-induced degradation (PID). This model was derived from module power degradation data obtained semicontinuously and statistically by in-situ dark current–voltage measurements in an environmental chamber. The modeling enables prediction of degradation rates and times as functions of temperature and humidity. Power degradation could be modeled linearly as a function of time to the second power; additionally, we found that the quantity of electric charge transferred from the active cell circuit to ground during the stress test is approximately linear with time. Therefore, the power loss could be linearized as a function of coulombs squared. With this result, we observed that when the module face was completely grounded with a condensed phase conductor, leakage current exceeded the anticipated corresponding degradation rate relative to the other tests performed in damp heat.
Original language | English |
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Journal | I E E E Journal of Photovoltaics |
Volume | 5 |
Issue number | 6 |
Pages (from-to) | 1549 - 1553 |
Number of pages | 5 |
ISSN | 2156-3381 |
DOIs | |
Publication status | Published - Nov 2015 |
Event | 42nd IEEE Photovoltaic Specialists Conference - New Orleans, LA, United States Duration: 14 Jun 2015 → 19 Jun 2015 Conference number: 42 |
Conference
Conference | 42nd IEEE Photovoltaic Specialists Conference |
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Number | 42 |
Country/Territory | United States |
City | New Orleans, LA |
Period | 14/06/2015 → 19/06/2015 |
Keywords
- PV module
- Potential-induced degradation
- Silicon
- Solar cells
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Dive into the research topics of 'Accelerated Testing and Modeling of Potential-Induced Degradation as a Function of Temperature and Relative Humidity'. Together they form a unique fingerprint.Projects
- 1 Finished
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SPVSYS: Smart Photovoltaic Systems
Teodorescu, R., Séra, D., Kerekes, T., Borup, U., Spataru, S. V. & Bogdan, C.
01/01/2011 → 31/07/2015
Project: Research