NDLI: Photovoltaic module power rating per IEC 61853–1: A study under natural sunlight

Content Provider	IEEE Xplore Digital Library
Author	Paghasian, K. TamizhMani, G.
Copyright Year	2011
Description	Author affiliation: Arizona State University, Photovoltaic Reliability Laboratory (Paghasian, K.; TamizhMani, G.)
Abstract	Power rating of photovoltaic modules at seven irradiance and four temperature matrix levels of IEC 61853–1 standard is one of the most important requirements to accurately predict energy production of photovoltaic modules at different climatic conditions. Actual outdoor measurements do not necessarily yield exact values as outlined by the power rating matrix so translation of these values is necessary. The primary objective of this work is to validate, based on outdoor measurements, the translation procedures as delineated in IEC 60891 standard and the bilinear interpolation method developed by NREL. These translation procedures were applied for four different module technologies: Mono-Si, a-Si, CdTe, and CIGS. To obtain data at various irradiance levels, different mesh screens with varying light transmittance were used with known transmittance values. To obtain data at various temperatures, the test module was pre-cooled in an air-conditioned wooden cabinet or an environmental chamber and then a series of current-voltage measurements were carried out under sunlight while the module warmed up naturally. To obtain data at temperatures higher than 45°C, the test module's backsheet was covered with a thermal insulator. The device linearity of all the four modules was determined using IEC 60904–10 procedure. An extensive validation analysis of the four translation procedures indicates that all the four procedures are remarkably accurate within an average error of 3% and RMSE of 4.5%.
Starting Page	002322
Ending Page	002327
File Size	1747657
Page Count	6
File Format	PDF
ISBN	9781424499663
ISSN	01608371
e-ISBN	9781424499656
DOI	10.1109/PVSC.2011.6186418
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature measurement IEC standards Linearity Photovoltaic systems Interpolation Temperature distribution
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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