A granular modeling method for non-uniform panel degradation based on I–V characterization and electroluminescence imaging
Published in Solar Energy, 2021
Abstract:
A new model of photovoltaic (PV) panel is proposed. The model precisely replicates sub-cell level degradation, such as cracks and interconnect failures, and reproduces their effect at the panel level I–V characteristic. Moreover, a regression method is proposed, which infers the model’s parameters from combination of electroluminescent (EL) image and degraded I–V characteristic. The combination of quantitative (EL image) and qualitative (I–V characteristic) enables to characterize the degradation of the cells embedded in the PV panel, without physical access to the cells. The proposed model and the regression problem is experimentally verified on a set of 3 single cell measurements and a set of 4 crystalline PV panels with various levels of degradation.
How to cite:
Garaj, Martin, Henry Shu-Hung Chung, Sergiu Spataru, Alan Wai-Lun Lo, and Huai Wang. "A granular modeling method for non-uniform panel
degradation based on I–V characterization and electroluminescence imaging." Solar Energy 227 (2021): 162-178.
Bibtex:
@article{garaj2021granular,
title={A granular modeling method for non-uniform panel degradation based on I--V characterization and electroluminescence imaging},
author={Garaj, Martin and Chung, Henry Shu-Hung and Spataru, Sergiu and Lo, Alan Wai-Lun and Wang, Huai},
journal={Solar Energy},
volume={227},
pages={162--178},
year={2021},
publisher={Elsevier}
}