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Influences of lamination condition on device durability for EVA-encapsulated PV modules

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conference contribution
posted on 04.07.2018 by Jiang Zhu, Dan Wu, Daniel Montiel-Chicharro, Michael Owen-Bellini, Karl G. Bedrich, Tom Betts, Ralph Gottschalg
PV modules rely on their encapsulation to provide durability. The pottant is predominantly ethylene vinyl acetate (EVA). It is protected by foils and glass to minimise encapsulant related degradations such as delamination, decomposition and corrosion. Types of EVA and/or backsheet will influence overall durability, as has been reported frequently. The lamination process as well as material handling also contributes to overall durability, but the impact is not always obvious. This paper investigates the effect of lamination temperature on encapsulation quality and its impact on module durability in accelerated ageing tests. A series of laminations is carried out at different conditions within the typical window suggested by the manufacturer as well as slightly off specifications as could occur due to insufficient temperature control. The samples were exposed to prolonged standard ageing tests for up to 7000 hours. Use of subtractive electroluminescence (EL) images demonstrates a minimum of two different ageing mechanisms are active at different time constants and of different activation energies (Ea).

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

31 EU PVSEC

Citation

ZHU, J. ... et al., 2015. Influences of lamination condition on device durability for EVA-encapsulated PV modules. IN: Proceedings of the 31st European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC 2015, Hamburg, Germany, 14th-18th September, pp.2465 - 2469.

Publisher

WIP

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

Notes

This is a conference paper.

ISBN

3-936338-39-6

Language

en

Location

Hamburg

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