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In-field eigen oscillation-measurement for detection of UV-induced EVA-degradation

 
: Fromm, A.; Trondl, A.; Strecker, H.; Habedank, M.; Rees, F.; Krappitz, M.; Kübler, R.

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Fulltext urn:nbn:de:0011-n-4422723 (233 KByte PDF)
MD5 Fingerprint: 9b2b7a2c4cfa3acfd6ab30129514c648
Created on: 25.4.2017


Mine, A. ; European Commission:
28th European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC 2013. Proceedings. DVD-ROM : 30 September to 04 October 2013, Paris, France
München: WIP-Renewable Energies, 2013
ISBN: 3-936338-33-7
pp.3131-3134
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <28, 2013, Paris>
Bundesministerium für Umwelt, Naturschutz und Reaktorsicherheit BMU
0329978B; MODUL
English
Conference Paper, Electronic Publication
Fraunhofer IWM ()
outdoor test; dynamic mechanical load; FEM simulation

Abstract
Photovoltaic-modules are exposed to static mechanical loads, such as snow and wind loads during conventional use. Wind also triggers oscillations. It is obvious that the dynamic loads are more likely to cause well known fatigue of materials even with little amplitudes, especially of brittle behaving PV-cells and ductile copper connecting wires. The dynamic behavior of PV-modules depending on the UV-induced aging of the ethylene vinyl acetate encapsulation is analyzed in outdoor strain-measurements. A detailed numeric model of a PV-module was created and mechanical loads for measurements in inaccessible regions in the laminate were calculated. The dependence from aging condition of encapsulation polymer shown in outdoor-results could be reproduced in the model.

: http://publica.fraunhofer.de/documents/N-442272.html