This study presents indoor and field validation results for two versions of the “DUSST” optical soiling sensor, intended to be a low-cost and low-maintenance device for measuring photovoltaic soiling losses. Indoor testing covers irradiance calibration and temperature dependencies, which are necessary to achieve high accuracy, low uncertainty field measurements. Field testing includes an array of different environments including Saudi Arabia, California, Utah, and Colorado. DUSST versions include a configuration with a 530-nm light emitting diode (LED) (discussed in previous work) and a unit with seven white LEDs and a polycarbonate collimating optic. The new design increases light intensity fivefold and demonstrates a single linear calibration coefficient is effective to measure soiling losses as high as 75%. Field data from Utah and California demonstrate that daily soiling loss measurements and soiling rate calculations closely match both reference cell and full-size module measurements of soiling losses and soiling rates. Corrective methods employed on the Utah DUSST sensor suggest that it is possible to achieve measurement errors as low as ±0.1% at two standard deviations. Field data from both Colorado and Saudi Arabia demonstrate that LED lens soiling can occur and that further design optimizations are needed. The lesson learned from all the field deployment locations suggests directions for future design improvements.

An in-depth field validation of “DUSST”. A novel low-maintenance soiling measurement device / Muller, M.; Micheli, L.; Solas, A. F.; Gostein, M.; Robinson, J.; Morely, K.; Dooraghi, M.; Alghamdi, Y. A.; Almutairi, Z. A.; Almonacid, F.; Fernandez, E. F.. - In: PROGRESS IN PHOTOVOLTAICS. - ISSN 1062-7995. - 29:8(2021), pp. 953-967. [10.1002/pip.3415]

An in-depth field validation of “DUSST”. A novel low-maintenance soiling measurement device

Micheli L.;
2021

Abstract

This study presents indoor and field validation results for two versions of the “DUSST” optical soiling sensor, intended to be a low-cost and low-maintenance device for measuring photovoltaic soiling losses. Indoor testing covers irradiance calibration and temperature dependencies, which are necessary to achieve high accuracy, low uncertainty field measurements. Field testing includes an array of different environments including Saudi Arabia, California, Utah, and Colorado. DUSST versions include a configuration with a 530-nm light emitting diode (LED) (discussed in previous work) and a unit with seven white LEDs and a polycarbonate collimating optic. The new design increases light intensity fivefold and demonstrates a single linear calibration coefficient is effective to measure soiling losses as high as 75%. Field data from Utah and California demonstrate that daily soiling loss measurements and soiling rate calculations closely match both reference cell and full-size module measurements of soiling losses and soiling rates. Corrective methods employed on the Utah DUSST sensor suggest that it is possible to achieve measurement errors as low as ±0.1% at two standard deviations. Field data from both Colorado and Saudi Arabia demonstrate that LED lens soiling can occur and that further design optimizations are needed. The lesson learned from all the field deployment locations suggests directions for future design improvements.
2021
field testing; photovoltaics; sensor; soiling; thermal characterization
01 Pubblicazione su rivista::01a Articolo in rivista
An in-depth field validation of “DUSST”. A novel low-maintenance soiling measurement device / Muller, M.; Micheli, L.; Solas, A. F.; Gostein, M.; Robinson, J.; Morely, K.; Dooraghi, M.; Alghamdi, Y. A.; Almutairi, Z. A.; Almonacid, F.; Fernandez, E. F.. - In: PROGRESS IN PHOTOVOLTAICS. - ISSN 1062-7995. - 29:8(2021), pp. 953-967. [10.1002/pip.3415]
File allegati a questo prodotto
File Dimensione Formato  
Muller_An in-depth field validation _2021.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 478.75 kB
Formato Adobe PDF
478.75 kB Adobe PDF   Contatta l'autore
Muller_An in-depth field validation _Post-print_2021.pdf

accesso aperto

Note: Disponibile sul sito della casa editrice: https://onlinelibrary.wiley.com/doi/am-pdf/10.1002/pip.3415
Tipologia: Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 1.11 MB
Formato Adobe PDF
1.11 MB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1625578
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 8
social impact