Conference paper
Enhancement of Electroluminescence images for fault detection in photovoltaic panels
Aalborg University1
Department of Photonics Engineering, Technical University of Denmark2
Coding and Visual Communication, Department of Photonics Engineering, Technical University of Denmark3
Photovoltaic Materials and Systems, Department of Photonics Engineering, Technical University of Denmark4
Good quality images are necessary for electroluminescence (EL) image analysis and failure quantification in solar panels. In this work, a method for determining image quality in terms of more accurate failure detection in PV panels through EL imaging is proposed. The goal of the paper is to highlight the different methods for image quality improvement and to determine if the enhanced image provides more useful diagnostic information for accurate micro cracks and fracture detection.
From the work carried out in this paper, it is to be noted that averaging technique helps in improving the SNR value. Additionally, subtracting the background from the obtained averaged EL image proves to be an enhancing method for cell fracture identification and more number of edges are also detected which can be useful for micro crack quantification.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2018 |
| Pages: | 0447-0452 |
| Proceedings: | 7th World Conference on Photovoltaic Energy Conversion |
| ISBN: | 1538685299 , 1538685302 , 9781538685297 and 9781538685303 |
| Types: | Conference paper |
| DOI: | 10.1109/PVSC.2018.8547442 |
| ORCIDs: | Mantel, Claire , Forchhammer, Søren , dos Reis Benatto, Gisele A. , Riedel, Nicholas and Poulsen, Peter Behrensdorff |
Benchmark testing Cameras Image edge detection Image enhancement Image quality SDG 7 - Affordable and Clean Energy Sensitivity Signal to noise ratio
EL image EL imaging Electroluminescence images PV panels SNR value cell fracture identification electroluminescence failure analysis failure detection failure quantification fault detection fault diagnosis fracture fracture detection image enhancement image quality improvement microcrack quantification microcracks photovoltaic panels solar cell arrays solar panels
