Evaluation of Dynamic Mechanical Loading as an Accelerated Test Method for Ribbon Fatigue
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
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 o 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.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Contributing Organization:
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan; Mitsui Chemical, Tokyo, Japan; Toray, Tokyo, Japan; Espec, Hudsonville, Michigan; State Key Laboratory of PV Science and Technology, Trina Solar, Changzhou, China
- OSTI ID:
- 1215009
- Report Number(s):
- NREL/CP-5J00-62596
- Journal Information:
- Conference Record of the IEEE Photovoltaic Specialists Conference, Vol. 2013; Conference: 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC), Tampa, FL (United States), 16-21 Jun 2013; ISSN 0160-8371
- Publisher:
- IEEE
- Country of Publication:
- United States
- Language:
- English
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