Evaluation of Photodiode-Based Pyranometers and Reference Solar Cells on a Two-Axis Tracking System

Frank Vignola, Josh Peterson, Rich Kessler, Mike Dooraghi, Manajit Sengupta, Fotis Mavromatakis

Research output: Contribution to conferencePaperpeer-review

8 Scopus Citations

Abstract

The performance of photodiode-based pyranometers and reference solar cells are examined on a two-axis tracker surface. This is the third in a series of papers examining the performance of photodiode-based pyranometers and reference solar cells on fixed and tracking surfaces. Because the instruments are oriented normally to the incident radiation, angle-of-incidence effects are minimized. By removing the angle-of-incidence effects inherent in earlier studies, the change in the sensor's clear sky responsivity can be more clearly identified. It was found that the photodiode-based pyranometers demonstrate a larger change in responsivity than the reference solar cells. Spectral measurements are recommended to verify the cause of this difference.

Original languageAmerican English
Pages2376-2381
Number of pages6
DOIs
StatePublished - 26 Nov 2018
Event7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States
Duration: 10 Jun 201815 Jun 2018

Conference

Conference7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Country/TerritoryUnited States
CityWaikoloa Village
Period10/06/1815/06/18

Bibliographical note

See NREL/CP-5D00-71354 for preprint

NREL Publication Number

  • NREL/CP-5D00-73754

Keywords

  • Pyranometer
  • reference cell
  • spectral radiation
  • systematic bias
  • temperature dependence
  • two-axis tracking

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