Changes of solar cell parameters during damp-heat exposure
conference contributionposted on 2015-06-09, 14:56 authored by Jiang Zhu, Ralph Gottschalg, M. Koehl, S. Hoffmann, K.A. Berger, Shokufeh Zamini, I.J. Bennett, E. Gerritsen, P. Malbranch, P. Pugliatti, A. Di Stefano, F. Aleo, D. Bertani, F. Paletta, F. Roca, G. Graditi, M. Pellegrino, O. Zubillaga, P. Cano, A. Pozza, T. Sample
The degradation of PV modules during damp-heat exposure is investigated. Power degradation is analysed in dependence of temperature and humidity during exposure. The module’s equivalent circuit parameters are calculated from I-V characteristics measured during ageing. A dose function is developed and degradations of power as well as equivalent circuit parameters can be analysed against the dose, which provides a better understanding of the module ageing behaviour. EL images of modules before and after ageing support the changes of solar cell parameters.
- Mechanical, Electrical and Manufacturing Engineering