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oai:uvadoc.uva.es:10324/528432025-01-31T08:02:06Zcom_10324_1158com_10324_931com_10324_894col_10324_1242

2022-04-20T09:26:04Z urn:hdl:10324/52843 Nondestructive characterization of solar PV cells defects by means of electroluminescence, infrared thermography, I–V curves and visual tests: Experimental study and comparison Gallardo Saavedra, Sara Hernández Callejo, Luis Alonso García, María del Carmen Santos, José Domingo Morales Aragones, José Ignacio Alonso Gómez, Víctor Moretón Fernández, Ángel González Rebollo, Miguel Ángel Martínez Sacristán, Óscar Photovoltaic (PV) modules are the core of every PV system, representing the power generation and their operation will affect the overall plant performance. It is one of the elements within a PV site with the higher failure appearance, being essential their proper operation to produce reliable, efficient and safety energy. Quantitative analysis and characterization of manufacturing, soldering and breaking PV defects is performed by a combination of electroluminescence (EL), infrared thermography (IRT), electrical current voltage (I-V) curves and visual inspection. Equivalent-circuit model characterization and microscope inspection are also performed as additional techniques when they contribute to the defects characterization. A 60-cells polycrystalline module has been ad hoc manufactured for this research, with different defective and non-defective cells. All cells are accessible from the backside of the module and the module includes similar kinds of defects in the same bypass string. This paper characterizes different defects of PV modules to control, mitigate or eliminate their influence and being able to do a quality assessment of a whole PV module, relating the individual cells performance with the combination of defective and non-defective cells within the module strings, with the objective of determining their interaction and mismatch effects, apart from their discrete performance. 2022-04-20T09:26:04Z 2022-04-20T09:26:04Z 2020 info:eu-repo/semantics/article Energy, 2020, vol. 205, p. 117930 0360-5442 https://uvadoc.uva.es/handle/10324/52843 10.1016/j.energy.2020.117930 117930 Energy 205 eng https://www.sciencedirect.com/science/article/pii/S0360544220310379 info:eu-repo/semantics/restrictedAccess © 2020 Elsevier Ltd.