研究目的
This paper evaluates some of the Energy rating approaches in IEC 61853 and compares them with high quality measurements from Gantner Instruments’ OTF in Tempe AZ.
研究成果
The GI OTF suggests a correctable offset at low Gi, then similar results for module temperature rise vs. Gi and WS. For matrix performance vs. Irradiance, Temperature fitting, the MPM model is suggested over linear interpolation/extrapolation for being meaningful, orthogonal, robust, and normalized.
研究不足
The DCORR equation cannot be checked presently. Binning of module Pmax, manufacturing variability, and irradiance sensor tolerance may limit the accuracy of any energy rating validation.
1:Experimental Design and Method Selection:
The study compares IEC 61853 equations with GI measurements and models like MPM/LFM for performance matrices vs. irradiance and temperature.
2:Sample Selection and Data Sources:
Six fixed tilt modules installed in 2010 at 33 deg tilt due south were investigated for
3:List of Experimental Equipment and Materials:
20 Includes Gantner Instruments OTF at Tempe, AZ, with Module IV measurements taken every minute.
4:Experimental Procedures and Operational Workflow:
Measurements include solar position, angle of incidence, clearness index, wind speed, wind direction, ambient temperature, relative humidity, inclined and horizontal irradiance, and spectrum.
5:Data Analysis Methods:
Uses equations for spectral correction, angle of incidence correction, and module temperature rise.
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