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Title: Evaluation of Dynamic Mechanical Loading as an Accelerated Test Method for Ribbon Fatigue

Abstract

Dynamic Mechanical Loading (DML) of photovoltaic modules is explored as a route to quickly fatigue copper interconnect ribbons. Results indicate that most of the interconnect ribbons may be strained through module mechanical loading to a level that will result in failure in a few hundred to thousands of cycles. Considering the speed at which DML may be applied, this translates into a few hours of testing. To evaluate the equivalence of DML to thermal cycling, parallel tests were conducted with thermal cycling. Preliminary analysis suggests that one +/-1 kPa DML cycle is roughly equivalent to one standard accelerated thermal cycle and approximately 175 of these cycles are equivalent to a 25-year exposure in Golden Colorado for the mechanism of module ribbon fatigue.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1260514
Report Number(s):
NREL/CP-5J00-61484
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 29th European Photovoltaic Solar Energy Conference and Exhibition, 22-26 September 2014, Amsterdam, The Netherlands
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; dynamic mechanical loading; thermal cycling; fatigue; cell cracking; accelerated testing

Citation Formats

Bosco, Nick, Silverman, Timothy J., Wohlgemuth, John, Kurtz, Sarah, Inoue, Masanao, Sakurai, Keiichiro, Shioda, Tsuyoshi, Zenkoh, Hirofumi, Hirota, Kusato, Miyashita, Masanori, Tadanori, Tanahashi, Suzuki, Soh, Chen, Yifeng, and Verlinden, Pierre J. Evaluation of Dynamic Mechanical Loading as an Accelerated Test Method for Ribbon Fatigue. United States: N. p., 2014. Web. doi:10.4229/EUPVSEC20142014-5DO.11.2.
Bosco, Nick, Silverman, Timothy J., Wohlgemuth, John, Kurtz, Sarah, Inoue, Masanao, Sakurai, Keiichiro, Shioda, Tsuyoshi, Zenkoh, Hirofumi, Hirota, Kusato, Miyashita, Masanori, Tadanori, Tanahashi, Suzuki, Soh, Chen, Yifeng, & Verlinden, Pierre J. Evaluation of Dynamic Mechanical Loading as an Accelerated Test Method for Ribbon Fatigue. United States. doi:10.4229/EUPVSEC20142014-5DO.11.2.
Bosco, Nick, Silverman, Timothy J., Wohlgemuth, John, Kurtz, Sarah, Inoue, Masanao, Sakurai, Keiichiro, Shioda, Tsuyoshi, Zenkoh, Hirofumi, Hirota, Kusato, Miyashita, Masanori, Tadanori, Tanahashi, Suzuki, Soh, Chen, Yifeng, and Verlinden, Pierre J. Wed . "Evaluation of Dynamic Mechanical Loading as an Accelerated Test Method for Ribbon Fatigue". United States. doi:10.4229/EUPVSEC20142014-5DO.11.2.
@article{osti_1260514,
title = {Evaluation of Dynamic Mechanical Loading as an Accelerated Test Method for Ribbon Fatigue},
author = {Bosco, Nick and Silverman, Timothy J. and Wohlgemuth, John and Kurtz, Sarah and Inoue, Masanao and Sakurai, Keiichiro and Shioda, Tsuyoshi and Zenkoh, Hirofumi and Hirota, Kusato and Miyashita, Masanori and Tadanori, Tanahashi and Suzuki, Soh and Chen, Yifeng and Verlinden, Pierre J.},
abstractNote = {Dynamic Mechanical Loading (DML) of photovoltaic modules is explored as a route to quickly fatigue copper interconnect ribbons. Results indicate that most of the interconnect ribbons may be strained through module mechanical loading to a level that will result in failure in a few hundred to thousands of cycles. Considering the speed at which DML may be applied, this translates into a few hours of testing. To evaluate the equivalence of DML to thermal cycling, parallel tests were conducted with thermal cycling. Preliminary analysis suggests that one +/-1 kPa DML cycle is roughly equivalent to one standard accelerated thermal cycle and approximately 175 of these cycles are equivalent to a 25-year exposure in Golden Colorado for the mechanism of module ribbon fatigue.},
doi = {10.4229/EUPVSEC20142014-5DO.11.2},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 31 00:00:00 EST 2014},
month = {Wed Dec 31 00:00:00 EST 2014}
}

Conference:
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