Accelerated Aging Study of Backsheet Repair with Flowable Silicone Sealant

We investigate the repair of polyamide AAA backsheets on complete PV modules that had been degraded during years of operation in a solar park, and study the durability of the repair through further climate chamber aging. PV modules with badly degraded AAA backsheets were repaired with a layer of sil...

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Bibliographic Details
Main Authors: Kenney, Kayla, Beaucarne, Guy, Garcia, Jorge Lima, Jadot, Emmanuel, Gassner, Anika, Eder, Gabriele
Format: Conference Proceeding
Language:English
Subjects:
Accelerated aging
Backsheets
Coatings
Degradation
IEC Standards
Insulation
Maintenance engineering
Resistance
Stress
Visualization
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Summary:We investigate the repair of polyamide AAA backsheets on complete PV modules that had been degraded during years of operation in a solar park, and study the durability of the repair through further climate chamber aging. PV modules with badly degraded AAA backsheets were repaired with a layer of silicone repair coating material of 400 μm average thickness. Electrical insulation was restored by the repair procedure. For the aging study in climate chambers, Sequence B of IEC 61730, which includes damp heat, UV and humidity freeze steps, was selected. The insulation resistance was found to be maintained after sequence B even though visual inspection revealed that pre-existing damage continued to worsen.
ISSN:2995-1755
DOI:10.1109/PVSC57443.2024.10749709