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Title: Linearity Testing of Photovoltaic Cells: Preprint

Abstract

Photovoltaic devices are rated in terms of their peak power with respect to a specific spectrum, total irradiance, and temperature. To rate photovoltaic devices, a reference detector is required whose response is linear with total irradiance. This paper describes a procedure to determine the linearity of the short-circuit current (Isc) versus the total irradiance (Etot) by illuminating a reference cell with two lamps. A device is linear if the current measured with both lamps illuminating the cell is the same as the sum of the currents with each lamp illuminating the cell. The two-lamp method is insensitive to the light spectra or spatial nonuniformity changing with irradiance. The two-lamp method is rapid, easy to implement, and does not require operator intervention to change the irradiances. The presence of room light only limits the lowest irradiance that can be evaluated. Unlike other methods, the two-lamp method does not allow the current to be corrected for nonlinear effects.

Authors:
; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
891463
Report Number(s):
NREL/CP-520-39854
TRN: US200621%%926
DOE Contract Number:  
AC36-99-GO10337
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion (WCPEC-4), 7-12 May 2006, Waikoloa, Hawaii
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 47 OTHER INSTRUMENTATION; ENERGY CONVERSION; LIGHT BULBS; PEAK LOAD; PHOTOVOLTAIC CELLS; SPECTRA; TESTING; PV; DEVICES; SPECTRUM; TOTAL IRRADIANCE; TEMPERATURE; SHORT-CIRCUIT CURRENT; TWO-LAMP METHOD; Solar Energy - Photovoltaics

Citation Formats

Emery, K., Winter, S., Pinegar, S., and Nalley D. Linearity Testing of Photovoltaic Cells: Preprint. United States: N. p., 2006. Web. doi:10.1109/WCPEC.2006.279938.
Emery, K., Winter, S., Pinegar, S., & Nalley D. Linearity Testing of Photovoltaic Cells: Preprint. United States. doi:10.1109/WCPEC.2006.279938.
Emery, K., Winter, S., Pinegar, S., and Nalley D. Mon . "Linearity Testing of Photovoltaic Cells: Preprint". United States. doi:10.1109/WCPEC.2006.279938. https://www.osti.gov/servlets/purl/891463.
@article{osti_891463,
title = {Linearity Testing of Photovoltaic Cells: Preprint},
author = {Emery, K. and Winter, S. and Pinegar, S. and Nalley D.},
abstractNote = {Photovoltaic devices are rated in terms of their peak power with respect to a specific spectrum, total irradiance, and temperature. To rate photovoltaic devices, a reference detector is required whose response is linear with total irradiance. This paper describes a procedure to determine the linearity of the short-circuit current (Isc) versus the total irradiance (Etot) by illuminating a reference cell with two lamps. A device is linear if the current measured with both lamps illuminating the cell is the same as the sum of the currents with each lamp illuminating the cell. The two-lamp method is insensitive to the light spectra or spatial nonuniformity changing with irradiance. The two-lamp method is rapid, easy to implement, and does not require operator intervention to change the irradiances. The presence of room light only limits the lowest irradiance that can be evaluated. Unlike other methods, the two-lamp method does not allow the current to be corrected for nonlinear effects.},
doi = {10.1109/WCPEC.2006.279938},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2006},
month = {Mon May 01 00:00:00 EDT 2006}
}

Conference:
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