Characterizing the Performance of Daylight Filters for Electroluminescence Imaging of Crystalline Silicon PV Modules

Gisele Alves dos Reis Benatto; Alejandra A. Mayordomo; Thøger Kari Hass; Rodrigo Del Prado Santamaria; Peter Behrensdorff Poulsen; Sergiu Viorel Spataru

doi:10.4229/EUPVSEC2023/4CV.1.6

Characterizing the Performance of Daylight Filters for Electroluminescence Imaging of Crystalline Silicon PV Modules

Technical University of Denmark

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

To perform outdoor daylight electroluminescence (EL) and photoluminescence (PL) of PV modules for defect and fault detection, it is necessary to filter away any other light source apart from the solar cell's luminescence emission. Image processing is required in broad daylight to increase the signal-to-noise ratio digitally. However, it is reported in the literature that an optical (often bandpass) filter in front of the camera lens or sensor is also needed to overcome the 4-5 orders of magnitude more intense sunlight. The specs of such a "daylight filter" are often mentioned but are rarely the same between research groups and inspection companies. To our knowledge, a study has not addressed the main factors necessary to define an optimal filter for daylight luminescence imaging of PV modules. In this work, we evaluated the spectroscopic characteristics of four filter configurations. We performed daylight EL imaging to estimate their performance in signal-to-noise ratio and EL image quality.

Original language	English
Title of host publication	Proceedings of 40^th European Photovoltaic Solar Energy Conference and Exhibition
Number of pages	5
Publisher	EU PVSEC
Publication date	2023
Article number	020372
ISBN (Print)	3-936338-88-4
DOIs	https://doi.org/10.4229/EUPVSEC2023/4CV.1.6
Publication status	Published - 2023
Event	40^th European Photovoltaic Solar Energy Conference and Exhibition - CCL Lisbon Congress Centre, Lisbon, Portugal Duration: 17 Sept 2023 → 22 Sept 2023 Conference number: 40 https://www.eupvsec.org/ http://www.eupvsec.org

Conference

Conference	40^th European Photovoltaic Solar Energy Conference and Exhibition
Number	40
Location	CCL Lisbon Congress Centre
Country/Territory	Portugal
City	Lisbon
Period	17/09/2023 → 22/09/2023
Internet address	https://www.eupvsec.org/ http://www.eupvsec.org

Bibliographical note

'Characterizing the Performance of Daylight Filters for Electroluminescence Imaging of Crystalline Silicon PV Modules' has been selected as Best Poster Award winner in the thematic area of PV Systems Engineering, Integrated/Applied PV

Keywords

Electroluminescence
PV modules
Outdoor inspection

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10.4229/EUPVSEC2023/4CV.1.6

FulltextAccepted author manuscript, 1.23 MB

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Characterizing the Performance of Daylight Filters for Electroluminescence Imaging of Crystalline Silicon PV Modules
Benatto, G. A. D. R. (Recipient), Mayordomo, A. A. (Recipient), Hass, T. K. (Recipient), Del Prado Santamaria, R. (Recipient), Poulsen, P. B. (Recipient) & Spataru, S. V. (Recipient), 22 Sept 2023
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Benatto, G. A. D. R., Mayordomo, A. A., Hass, T. K., Del Prado Santamaria, R., Poulsen, P. B., & Spataru, S. V. (2023). Characterizing the Performance of Daylight Filters for Electroluminescence Imaging of Crystalline Silicon PV Modules. In Proceedings of 40^th European Photovoltaic Solar Energy Conference and Exhibition Article 020372 EU PVSEC. https://doi.org/10.4229/EUPVSEC2023/4CV.1.6

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title = "Characterizing the Performance of Daylight Filters for Electroluminescence Imaging of Crystalline Silicon PV Modules",

abstract = "To perform outdoor daylight electroluminescence (EL) and photoluminescence (PL) of PV modules for defect and fault detection, it is necessary to filter away any other light source apart from the solar cell's luminescence emission. Image processing is required in broad daylight to increase the signal-to-noise ratio digitally. However, it is reported in the literature that an optical (often bandpass) filter in front of the camera lens or sensor is also needed to overcome the 4-5 orders of magnitude more intense sunlight. The specs of such a {"}daylight filter{"} are often mentioned but are rarely the same between research groups and inspection companies. To our knowledge, a study has not addressed the main factors necessary to define an optimal filter for daylight luminescence imaging of PV modules. In this work, we evaluated the spectroscopic characteristics of four filter configurations. We performed daylight EL imaging to estimate their performance in signal-to-noise ratio and EL image quality. ",

keywords = "Electroluminescence, PV modules, Outdoor inspection",

author = "Benatto, \{Gisele Alves dos Reis\} and Mayordomo, \{Alejandra A.\} and Hass, \{Th{\o}ger Kari\} and \{Del Prado Santamaria\}, Rodrigo and Poulsen, \{Peter Behrensdorff\} and Spataru, \{Sergiu Viorel\}",

note = "'Characterizing the Performance of Daylight Filters for Electroluminescence Imaging of Crystalline Silicon PV Modules' has been selected as Best Poster Award winner in the thematic area of PV Systems Engineering, Integrated/Applied PV; 40<sup>th</sup> European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC 2023 ; Conference date: 17-09-2023 Through 22-09-2023",

year = "2023",

doi = "10.4229/EUPVSEC2023/4CV.1.6",

language = "English",

isbn = "3-936338-88-4",

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}

Benatto, GADR, Mayordomo, AA, Hass, TK , Del Prado Santamaria, R , Poulsen, PB & Spataru, SV 2023, Characterizing the Performance of Daylight Filters for Electroluminescence Imaging of Crystalline Silicon PV Modules. in Proceedings of 40^th European Photovoltaic Solar Energy Conference and Exhibition., 020372, EU PVSEC, 40^th European Photovoltaic Solar Energy Conference and Exhibition, Lisbon, Portugal, 17/09/2023. https://doi.org/10.4229/EUPVSEC2023/4CV.1.6

Characterizing the Performance of Daylight Filters for Electroluminescence Imaging of Crystalline Silicon PV Modules. / Benatto, Gisele Alves dos Reis; Mayordomo, Alejandra A.; Hass, Thøger Kari et al.
Proceedings of 40^th European Photovoltaic Solar Energy Conference and Exhibition. EU PVSEC, 2023. 020372.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Characterizing the Performance of Daylight Filters for Electroluminescence Imaging of Crystalline Silicon PV Modules

AU - Benatto, Gisele Alves dos Reis

AU - Mayordomo, Alejandra A.

AU - Hass, Thøger Kari

AU - Del Prado Santamaria, Rodrigo

AU - Poulsen, Peter Behrensdorff

AU - Spataru, Sergiu Viorel

N1 - Conference code: 40

PY - 2023

Y1 - 2023

N2 - To perform outdoor daylight electroluminescence (EL) and photoluminescence (PL) of PV modules for defect and fault detection, it is necessary to filter away any other light source apart from the solar cell's luminescence emission. Image processing is required in broad daylight to increase the signal-to-noise ratio digitally. However, it is reported in the literature that an optical (often bandpass) filter in front of the camera lens or sensor is also needed to overcome the 4-5 orders of magnitude more intense sunlight. The specs of such a "daylight filter" are often mentioned but are rarely the same between research groups and inspection companies. To our knowledge, a study has not addressed the main factors necessary to define an optimal filter for daylight luminescence imaging of PV modules. In this work, we evaluated the spectroscopic characteristics of four filter configurations. We performed daylight EL imaging to estimate their performance in signal-to-noise ratio and EL image quality.

AB - To perform outdoor daylight electroluminescence (EL) and photoluminescence (PL) of PV modules for defect and fault detection, it is necessary to filter away any other light source apart from the solar cell's luminescence emission. Image processing is required in broad daylight to increase the signal-to-noise ratio digitally. However, it is reported in the literature that an optical (often bandpass) filter in front of the camera lens or sensor is also needed to overcome the 4-5 orders of magnitude more intense sunlight. The specs of such a "daylight filter" are often mentioned but are rarely the same between research groups and inspection companies. To our knowledge, a study has not addressed the main factors necessary to define an optimal filter for daylight luminescence imaging of PV modules. In this work, we evaluated the spectroscopic characteristics of four filter configurations. We performed daylight EL imaging to estimate their performance in signal-to-noise ratio and EL image quality.

KW - Electroluminescence

KW - PV modules

KW - Outdoor inspection

U2 - 10.4229/EUPVSEC2023/4CV.1.6

DO - 10.4229/EUPVSEC2023/4CV.1.6

M3 - Article in proceedings

SN - 3-936338-88-4

BT - Proceedings of 40th European Photovoltaic Solar Energy Conference and Exhibition

PB - EU PVSEC

T2 - 40<sup>th</sup> European Photovoltaic Solar Energy Conference and Exhibition

Y2 - 17 September 2023 through 22 September 2023

ER -

Characterizing the Performance of Daylight Filters for Electroluminescence Imaging of Crystalline Silicon PV Modules

Abstract

Conference

Bibliographical note

Keywords

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Prizes

Characterizing the Performance of Daylight Filters for Electroluminescence Imaging of Crystalline Silicon PV Modules

Cite this