RT info:eu-repo/semantics/bookPart T1 Failure diagnosis on photovoltaic modules using thermography, electroluminescence, Rgb and I-V techniques A1 Gallardo Saavedra, Sara A1 Moreton, Angel A1 Jimenez, Marta A1 Alonso, Victor A1 Hernandez, Luis A1 Martínez Sacristán, Óscar A1 Gonzalez, Miguel Angel A1 Morales, Jose Ignacio AB Different techniques can be used to detect and quantify PV modules anomalies, as visual inspections,electrical tests like the I-V curve test, infrared thermography (IRT) or electroluminescence (EL). PV plants operatorsusually apply only one or two of them within the Operation and Maintenance (O&M) activities. Additionally,researchers usually studied them separately. However, these methods provide complementary results, glimpsinginteresting information about the PV site state. The main strength of the research performed is the simultaneous studyof all these inspection techniques, studying the correlation between them. Results confirm that, EL and IRT undercurrent injection on modules are closely correlated, while IRT under normal operation (sun exposure) revealscomplementary information not detected in EL but existing in the visible spectrum. In conclusion, it is advisable usingas many techniques as possible to characterize the actual state of the module and to explain its I-V curve. SN 3-936338-60-4 YR 2019 FD 2019 LK https://uvadoc.uva.es/handle/10324/52886 UL https://uvadoc.uva.es/handle/10324/52886 LA eng NO Proceedings of the 36th European Photovoltaic Solar Energy Conference and Exhibition. DOI: 10.4229/EUPVSEC20192019-4AV.2.20 DS UVaDOC RD 14-ene-2025