Drone-Based Daylight Electroluminescence Imaging of PV Modules

Gisele Alves dos Reis Benatto, Claire Mantel, Sergiu Viorel Spataru, Adrian A. Santamaria Lancia, Nicholas Riedel, Sune Thorsteinsson, Peter Behrensdorff Poulsen, Harsh Rajesh Parikh, Søren Forchhammer, Dezso Séra

Publikation: Bidrag til tidsskriftKonferenceartikel i tidsskriftForskningpeer review

42 Citationer (Scopus)
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Abstract

Electroluminescence (EL) imaging is a photovoltaic (PV) module characterization technique, which provides high accuracy in detecting defects and faults, such as cracks, broken cells interconnections, shunts, among many others; furthermore, the EL technique is used extensively due to a high level of detail and direct relationship to injected carrier density. However, this technique is commonly practiced only indoors - or outdoors from dusk to dawn - because the crystalline silicon luminescence signal is several orders of magnitude lower than sunlight. This limits the potential of such a powerful technique to be used in utility scale inspections, and therefore, the interest in the development of electrical biasing tools to make outdoor EL imaging truly fast and efficient. With the focus of quickly acquiring EL images in daylight, we present in this article a drone-based system capable of acquiring EL images at a frame rate of 120 frames per second. In a single second during high irradiance conditions, this system can capture enough EL and background image pairs to create an EL PV module image that has sufficient diagnostic information to identify faults associated with power loss. The final EL images shown in this work reached representative quality SNR AVG of 4.6, obtained with algorithms developed in previous works. These drone-based EL images were acquired with global horizontal solar irradiance close to one sun in the plane of the array.

OriginalsprogEngelsk
Artikelnummer9042865
TidsskriftI E E E Journal of Photovoltaics
Vol/bind10
Udgave nummer3
Sider (fra-til)872-877
Antal sider6
ISSN2156-3381
DOI
StatusUdgivet - maj 2020
Begivenhed 46th IEEE Photovoltaic Specialist Conference - Chicago, USA
Varighed: 16 jun. 201921 jun. 2019
Konferencens nummer: 46
https://www.ieee-pvsc.org/PVSC46/

Konference

Konference 46th IEEE Photovoltaic Specialist Conference
Nummer46
Land/OmrådeUSA
ByChicago
Periode16/06/201921/06/2019
Internetadresse

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