Comparison and Analysis of Instruments Measuring Plane-of-Array Irradiance for One-Axis Tracking Systems: Preprint

Manajit Sengupta, Frank Vignola, Chun-Yun Chiu, Josh Peterson

Research output: Contribution to conferencePaper

Abstract

A variety of sensors are studied on a one-axis tracking surface and a horizontal surface in Golden, Colorado, and Eugene, Oregon. This is the first year of a long-term study that will look at not only a comparison between the instruments but also the longer-term degradation in calibration and/or performance. Initially, results from each location will be analyzed, and then results will be compared and contrasted between the two locations. A quick comparison at Eugene indicates that reference solar cells seem to compare better against a secondary standard pyranometer on a one-axis tracker than photodiode-based pyranometers. More study is needed to characterize and confirm this finding.
Original languageAmerican English
Number of pages8
StatePublished - 2018
EventIEEE Photovoltaic Specialists Conference (PVSC) - Washington, D.C.
Duration: 25 Jun 201730 Jun 2017

Conference

ConferenceIEEE Photovoltaic Specialists Conference (PVSC)
CityWashington, D.C.
Period25/06/1730/06/17

NREL Publication Number

  • NREL/CP-5D00-67882

Keywords

  • one-axis tracking
  • plane-of-array irradiance
  • POA

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