Spectral Rear Irradiance Testing and Modeling for Degradation and Performance of Solar Fields: Preprint

Matthew Brown; Silvana Ovaitt; Chris Deline; Michael Kempe

Spectral Rear Irradiance Testing and Modeling for Degradation and Performance of Solar Fields: Preprint

Matthew Brown, Silvana Ovaitt, Chris Deline, Michael Kempe

Materials Science

Research output: Contribution to conference › Paper

Abstract

This work investigates how the spectrum of irradiance incident on the rear of solar modules impacts their degradation, and in case of bifacial PV their performance. We calculate the spectral irradiance incident on the rear of modules through raytrace simulations and validate with measured field data collected from a 75kW single axis-tracked bifacial test site. An equation to calculate relative degradation is shown, showing that current acceleration factors for UV damage in chambers can be off by +3% for the rear surfaces. Finally, a method for improving non-spectral simulations is proposed.

Original language	American English
Number of pages	6
State	Published - 2022
Event	49th IEEE Photovoltaic Specialists Conference (PVSC 49) - Philadelphia, Pennsylvania Duration: 5 Jun 2022 → 10 Jun 2022

Conference

Conference	49th IEEE Photovoltaic Specialists Conference (PVSC 49)
City	Philadelphia, Pennsylvania
Period	5/06/22 → 10/06/22

Bibliographical note

See NREL/CP-5K00-85064 for paper as published in proceedings

NREL Publication Number

NREL/CP-5K00-81934

Keywords

bifacial performance
rear irradiance
solar PV
UV degradation

Access to Document

https://www.nrel.gov/docs/fy23osti/81934.pdf

Cite this

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title = "Spectral Rear Irradiance Testing and Modeling for Degradation and Performance of Solar Fields: Preprint",

abstract = "This work investigates how the spectrum of irradiance incident on the rear of solar modules impacts their degradation, and in case of bifacial PV their performance. We calculate the spectral irradiance incident on the rear of modules through raytrace simulations and validate with measured field data collected from a 75kW single axis-tracked bifacial test site. An equation to calculate relative degradation is shown, showing that current acceleration factors for UV damage in chambers can be off by +3% for the rear surfaces. Finally, a method for improving non-spectral simulations is proposed.",

keywords = "bifacial performance, rear irradiance, solar PV, UV degradation",

author = "Matthew Brown and Silvana Ovaitt and Chris Deline and Michael Kempe",

note = "See NREL/CP-5K00-85064 for paper as published in proceedings; 49th IEEE Photovoltaic Specialists Conference (PVSC 49) ; Conference date: 05-06-2022 Through 10-06-2022",

year = "2022",

language = "American English",

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TY - CONF

T1 - Spectral Rear Irradiance Testing and Modeling for Degradation and Performance of Solar Fields: Preprint

AU - Brown, Matthew

AU - Ovaitt, Silvana

AU - Deline, Chris

AU - Kempe, Michael

N1 - See NREL/CP-5K00-85064 for paper as published in proceedings

PY - 2022

Y1 - 2022

N2 - This work investigates how the spectrum of irradiance incident on the rear of solar modules impacts their degradation, and in case of bifacial PV their performance. We calculate the spectral irradiance incident on the rear of modules through raytrace simulations and validate with measured field data collected from a 75kW single axis-tracked bifacial test site. An equation to calculate relative degradation is shown, showing that current acceleration factors for UV damage in chambers can be off by +3% for the rear surfaces. Finally, a method for improving non-spectral simulations is proposed.

AB - This work investigates how the spectrum of irradiance incident on the rear of solar modules impacts their degradation, and in case of bifacial PV their performance. We calculate the spectral irradiance incident on the rear of modules through raytrace simulations and validate with measured field data collected from a 75kW single axis-tracked bifacial test site. An equation to calculate relative degradation is shown, showing that current acceleration factors for UV damage in chambers can be off by +3% for the rear surfaces. Finally, a method for improving non-spectral simulations is proposed.

KW - bifacial performance

KW - rear irradiance

KW - solar PV

KW - UV degradation

M3 - Paper

T2 - 49th IEEE Photovoltaic Specialists Conference (PVSC 49)

Y2 - 5 June 2022 through 10 June 2022

ER -

Spectral Rear Irradiance Testing and Modeling for Degradation and Performance of Solar Fields: Preprint

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

Access to Document

Fingerprint

Cite this