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

Research output: Contribution to conferencePaperpeer-review

3 Scopus Citations

Abstract

This work investigates how the spectrum of irradiance incident on the rear of solar modules impacts the degradation and performance of backsheets. We model 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. A generic equation to estimate relative degradation is proposed, and we show that current acceleration factors for UV damage in chambers can be sub-estimate up to 4.5% absolute from the usually assumed 10% dosage on the rear surfaces.

Original languageAmerican English
Pages992-994
Number of pages3
DOIs
StatePublished - 2022
Event49th IEEE Photovoltaics Specialists Conference, PVSC 2022 - Philadelphia, United States
Duration: 5 Jun 202210 Jun 2022

Conference

Conference49th IEEE Photovoltaics Specialists Conference, PVSC 2022
Country/TerritoryUnited States
CityPhiladelphia
Period5/06/2210/06/22

Bibliographical note

See NREL/CP-5K00-81934 for preprint

NREL Publication Number

  • NREL/CP-5K00-85064

Keywords

  • bifacial performance
  • rear irradiance
  • solar pv
  • UV degradation

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