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ECN publication
Improved heat dissipation for hot spots in MWT laminates
Published by: Publication date:
ECN Solar Energy 6-11-2012
ECN report number: Document type:
ECN-M--12-062 Conference Paper
Number of pages: Full text:
4 Download PDF  

The effect of leakage current in H-pattern and MWT laminates is investigated by thermal imaging. Degradation of the laminates was assessed by visual appearance and by the IV power output. The laminates were exposed to a reverse voltage for up to an hour. Depending on the leakage current, the laminates were locally heated. When the temperature reaches above the lamination temperature, severe damage occurs instantly. For similar leakage current, we observe a smaller temperature increase in MWT laminates than in H-pattern laminates. A possible mechanism for the reduced effect in MWT laminates is given.

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