Method for Evaluating the Severity of Solar Cell Cracks in Electroluminescence Images

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Abstract

The severity of solar cell cracks is most often evaluated qualitatively, by assigning them to one of several categories. In this work we propose a machine analysis friendly metric for evaluating the severity of solar cell cracks from electroluminescence (EL) images. The metric is derived from the EL intensity versus camera sensor exposure time characteristic of the active solar cell regions, relative to that of non-radiative regions of the EL image. Thereafter an image segmentation method is used to determine the area and position of cracks above a certain severity level.
Original languageEnglish
Title of host publicationProceedings of 37th European Photovoltaic Solar Energy Conference and Exhibition
Publication date2020
Pages1130-1135
ISBN (Print)3-936338-73-6
DOIs
Publication statusPublished - 2020
Event37th European Photovoltaic Solar Energy Conference and Exhibition - Virtual event
Duration: 7 Sep 202011 Sep 2020
Conference number: 37
https://www.photovoltaic-conference.com/

Conference

Conference37th European Photovoltaic Solar Energy Conference and Exhibition
Number37
LocationVirtual event
Period07/09/202011/09/2020
Internet address

Keywords

  • Electroluminescence
  • Characterisation
  • Photovoltaic modules,
  • Quantitative analysis
  • Severity
  • Solar cell cracks

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