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Title: Changes of solar cell parameters during damp-heat exposure
Authors: Zhu, Jiang
Koehl, M.
Hoffmann, S.
Berger, K.A.
Zamini, Shokufeh
Bennett, I.J.
Gerritsen, E.
Malbranche, P.
Pugliatti, P.
Di Stefano, A.
Aleo, F.
Bertani, D.
Paletta, F.
Roca, F.
Graditi, G.
Pellegrino, M.
Zubillaga, O.
Cano Iranzo, F.J.
Pozza, A.
Sample, T.
Gottschalg, Ralph
Keywords: Solar cells
Photovoltaic modules
Damp-heat
Ageing
Degradation
Modelling
Issue Date: 2016
Publisher: © The Authors. Published by John Wiley & Sons Ltd.
Citation: ZHU, J. ... et al., 2016. Changes of solar cell parameters during damp-heat exposure. Progress in Photovoltaics: research and applications, doi: 10.1002/pip.2793.
Abstract: The electrical ageing of photovoltaic modules during extended damp-heat tests at different stress levels is investigated for three types of crystalline silicon photovoltaic modules with different backsheets, encapsulants and cell types. Deploying different stress levels allows determination of an equivalent stress dose function, which is a first step towards a lifetime prediction of devices. The derived humidity dose is used to characterise the degradation of power as well as that of the solar cell's equivalent circuit parameters calculated from measured current–voltage characteristics. An application of this to the samples demonstrates different modes in the degradation and thus enables better understanding of the module's underlying ageing mechanisms. The analysis of changes in the solar cell equivalent circuit parameters identified the primary contributors to the power degradation and distinguished the potential ageing mechanism for each types of module investigated in this paper.
Description: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution andreproduction in any medium, provided the original work is properly cited.
Sponsor: This work was supported in part by the European Commission under FP7 grant N° 262533 SOPHIA (INFRA-2010-1.1.22_CP-CSA-Infra) and by the Research Councils UK(RCUK) under project ‘Stability and Performance of Photovoltaics (STAPP)’ (contract no: EP/H040331/1).
Version: Published
DOI: 10.1002/pip.2793
URI: https://dspace.lboro.ac.uk/2134/22248
Publisher Link: http://dx.doi.org/10.1002/pip.2793
ISSN: 1099-159X
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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