Reference Cell Performance and Modeling on a One-Axis Tracking Surface

Frank Vignola, Josh Peterson, Rich Kessler, Sean Snider, Peter Gotseff, Manajit Sengupta, Aron Habte, Afshin Andreas, Fotis Mavromatakis

Research output: NRELPoster


Performance of five silicon-based reference cells is examined on a single-axis tracking surface. The reference cells' output are modeled using one-minute sampled spectral irradiance and reference cell temperature measurements. The model also incorporates spectral responsivity data for the reference cell. The transmission of light through the glazing multiplies the sum over all appropriate wavelengths of temperature adjusted reference cell responsivity times the measured spectral irradiance. Modeled reference cell output is compared with measured reference cell output under clear sky and totally cloudy sky conditions. For each reference cell the ratio of modeled to measured output varies by less than 2% over the year.
Original languageAmerican English
StatePublished - 2022

Publication series

NamePresented at the 49th IEEE Photovoltaic Specialists Conference (PVSC 49), 5-10 June 2022, Philadelphia, Pennsylvania

NREL Publication Number

  • NREL/PO-5D00-83402


  • modeling
  • solar reference cells
  • spectral irradiance
  • University of Oregon


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