How to detect low-energy fractures in PV modules

Researchers from the Technical University of Denmark have developed a novel method for detecting low-energy front glass cracks in PV modules using daylight electroluminescence (EL) imaging. Low-energy fractures are cracks that initially produce localized damage without significant propagation but have the potential to expand over time. Because they are subtle, they often go unnoticed in large-scale inspections. "The novelty of this work is that we show that low-energy glass cracks in PV modules can be consistently detected using daylight electroluminescence (EL) imaging acquired in motion," corresponding ...

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