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Fast hot spot evaluation

: Geisemeyer, I.; Fertig, F.; Warta, W.; Rein, S.; Schubert, M.

Fulltext urn:nbn:de:0011-n-3154995 (596 KByte PDF)
MD5 Fingerprint: 0dfb4c5ef8836d38f76fa64afa305e78
Created on: 2.12.2014

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>
Conference Paper, Electronic Publication
Fraunhofer ISE ()
Solarzellen - Entwicklung und Charakterisierung; Silicium-Photovoltaik; Charakterisierung von Prozess- und Silicium-Materialien; Modulintegration; module; testing; shading; shunts

We present a method which provides simple and fast evaluation of the hot spot potential of solar cells before the module assembly process. The method is based on convoluting power dissipation images measured with infrared thermography with specially designed point spread functions. The result is a temperature image of a cell under critical shading conditions of the module. For validation of the method we conduct a laboratory experiment with bare cells. Measured temperature fields of exemplary solar cells are compared to simulated images. The transfer from laboratory conditions for bare cells to outdoor module conditions is performed by using additional three-dimensional numerical simulations. It is shown that the method can in principle be used for inline application.