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

Conference · Thu Apr 12 00:00:00 EDT 2018

OSTI ID:1433598

Dooraghi, Michael R ^[1]; Sengupta, Manajit  ^[1]; Vignola, Frank ^[2]; Chiu, Chun-Yun ^[2]; Peterson, Josh ^[2]

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1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
2. University of Oregon

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.

• Research Organization: National Renewable Energy Lab. (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1433598
• Report Number(s): NREL/CP-5D00-67882
• Resource Relation: Conference: Presented at the IEEE Photovoltaic Specialists Conference (PVSC), 25-30 June 2017, Washington, D.C.
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
plane-of-array irradiance
POA
one-axis tracking