Methodology for Inspection of Defects in Photovoltaic Plants by Drone and Electroluminescence

Hernández-Callejo, Luís; Gallardo-Saavedra, Sara; Morales-Aragonés, José Ignacio; Alonso‐Gómez, Víctor; Redondo-Plaza, Alberto; Fernández-Martínez, Diego

doi:10.1007/978-3-030-96753-6_1

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…The use of InGaAs-based sensors is imperative to minimize exposure time and facilitate EL and PL imaging [ 29 ]. EL measurements with UAV integration have been achieved during the night using both conventional techniques [ 30 ] and bidirectional inverter-based techniques [ 31 ]. Furthermore, luminescence inspections with UAVs are feasible during the day through the utilization of a lock-in technique [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Passive Electroluminescence and Photoluminescence Imaging Acquisition of Photovoltaic Modules

Redondo-Plaza,

Morales-Aragonés,

Gallardo-Saavedra

et al. 2024

Sensors

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In photovoltaic power plant inspections, techniques for module assessment play a crucial role as they enhance fault detection and module characterization. One valuable technique is luminescence. The present paper introduces a novel technique termed passive luminescence. It enhances both electroluminescence and photoluminescence imaging acquisition in photovoltaic power plants under normal operation in high irradiance conditions. This technique is based on the development of an electronic board, which allows the polarity of the module to be changed, enabling the current generated by the photovoltaic string to be injected into the module and producing electroluminescence effects. Additionally, the board can bypass the module and set an open circuit, inducing photoluminescence emission using sunlight as an excitation source. The proper coordination of the board and an InGaAs camera with a bandpass filter has allowed for the integration of a lock-in technique, which has produced electroluminescence and photoluminescence pictures that can be used for fault detection.

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Section: Introductionmentioning

confidence: 99%

Passive Electroluminescence and Photoluminescence Imaging Acquisition of Photovoltaic Modules

Redondo-Plaza,

Morales-Aragonés,

Gallardo-Saavedra

et al. 2024

Sensors

Self Cite

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Inspection techniques in photovoltaic power plants: A review of electroluminescence and photoluminescence imaging

Redondo-Plaza,

Zorita-Lamadrid,

Alonso-Gómez

et al. 2024

Renewable Energies

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The growth of photovoltaic power plants in both size and number has spurred the development of new approaches in inspection techniques. The most commonly employed methods include visual inspections, current-voltage measurements, infrared thermography, and luminescence imaging. Luminescence, rooted in the electromagnetic radiation capture of semiconductor structures that make up solar cells, proves effective in detecting various failures that may occur throughout the lifespan of a photovoltaic module. This phenomenon can be induced either by injecting current into the photovoltaic module (Electroluminescence) or through optical excitation using an appropriate light source (Photoluminescence). This paper offers an overview of the conventional outdoor luminescence imaging technique, delving into its applications and limitations. Additionally, it provides a comprehensive review of innovative outdoor luminescence technique approaches. These novel techniques aim to address several limitations of conventional methods, such as the considerably lower luminescence emission intensity compared to solar radiation, the need for external energy sources for current injection, the required acquisition time, and the necessity of disconnecting the solar module.

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Methodology for Inspection of Defects in Photovoltaic Plants by Drone and Electroluminescence

Cited by 2 publications

References 17 publications

Passive Electroluminescence and Photoluminescence Imaging Acquisition of Photovoltaic Modules

Passive Electroluminescence and Photoluminescence Imaging Acquisition of Photovoltaic Modules

Inspection techniques in photovoltaic power plants: A review of electroluminescence and photoluminescence imaging

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