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Aging-effects of polymeric encapsulation on the mechanical characteristics of solar panels and embedded components

: Fromm, A.; Trondl, A.; Strecker, H.; Krappitz, M.; Thissen, D.; Kübler, R.

Volltext urn:nbn:de:0011-n-3752718 (282 KByte PDF)
MD5 Fingerprint: 81d5197f437ebc0fbc3776535945cfb7
Erstellt am: 25.4.2017

Bokhoven, T.P. ; European Commission:
29th European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC 2014 : Proceedings of the international conference held in Amsterdam, The Netherlands, 22 - 26 September 2014, DVD
München: WIP, 2014
ISBN: 3-936338-34-5
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <29, 2014, Amsterdam>
Bundesministerium für Umwelt, Naturschutz, Bau und Reaktorsicherheit BMUB
0329978B; MODUL
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IWM ()
embrittlement; encapsulation; EVA; interconnector ribbon; dynamic mechanical loads; FEM-simulation

Solar panels are exposed to varying external static and dynamic mechanical loads which determine the lifetime of the whole multilayered structure. The induced mechanical stresses are originate with weather phenomena such as wind, snow, and hail. Influences like these are strongly mechanically impacting on modules. Moreover, environmental parameters such as humidity and UV-radiation influence mechanical properties of module components in a yet not investigated way, thus influencing the modules’ response to aforementioned stresses. The aging behavior – particularly the embrittlement – of the encapsulating polymer under UV-exposure was investigated using ethylene vinyl acetate (EVA) as an example. A detailed numeric model of a PV-module and its layer setup regarding front glass, encapsulation, silicon-cells and copper interconnectors was created.