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Author: brian dougherty

Displaying records 1 to 10 of 28 records.
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1. Large-area irradiance-mode spectral response measurements of solar cells by a light-emitting-diode- based integrating sphere source
Published: 5/30/2014
Authors: Behrang H Hamadani, John F Roller, Andrew M Shore, Brian P Dougherty, Howard W Yoon
Abstract: An irradiance-mode absolute differential spectral response measurement system based on a light emitting diode (LED) array is described. The LEDs are coupled to an integrating sphere whose output irradiance is uniform to better than 2 % over an ar ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915298

2. Fast and Reliable Spectral Response Measurements of PV Cells Using Light Emitting Diodes
Published: 1/1/2014
Authors: Behrang H Hamadani, John F Roller, Brian P Dougherty, Howard W Yoon
Abstract: We present a measurement system for absolute differential spectral responsivity of solar cells based on high-powered LED arrays coupled to an optical light guide capable of large area illumination. Two different measurement techniques were developed ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913952

3. Absolute spectral responsivity measurements of solar cells by a hybrid optical technique
Published: 7/15/2013
Authors: Behrang H Hamadani, John F Roller, Brian P Dougherty, Fiona Persaud, Howard W Yoon
Abstract: An irradiance mode, absolute differential spectral response measurement system for solar cells is presented. The system is based on combining the monochromator-based approach of determining the power mode spectral responsivity of cells with an LED-b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913725

4. A versatile light-emitting-diode-based spectral response measurement system for photovoltaic device characterization
Published: 6/29/2012
Authors: Behrang H Hamadani, John F Roller, Brian P Dougherty, Howard W Yoon
Abstract: An absolute differential spectral response measurement system for solar cells is presented. The system couples an array of light emitting diodes (LEDs) with an optical waveguide to provide large area illumination. Two unique yet complementary measur ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910849

5. Towards realization of a large-area, LED-based solar simulator
Published: 11/27/2011
Authors: Behrang H Hamadani, Kangbin Chua, John F Roller, Howard W Yoon, Brian P Dougherty
Abstract: LED-based solar simulators have shown great promise as alternative light sources for indoor testing of PV cells as compared to their traditional counterparts. However, large-area uniform illumination more suitable for larger cells and module measurem ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908797

6. Evaluation and Validation of Equivalent Circuit Photovoltaic Solar Cell Performance Models
Published: 5/1/2011
Authors: Matthew T Boyd, S. A. Klein, Douglas T Reindl, Brian P Dougherty
Abstract: The ,Five-Parameter ModelŠ is an electrical performance model for photovoltaic solar cells that predicts the voltage and current output by representing the cells as an equivalent electrical circuit with radiation and temperature dependent components. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905309

7. Spectroradiometric Characterization of the NIST Pulsed Solar Simulator
Published: 8/20/2009
Authors: Howard W Yoon, Brian P Dougherty, Vladimir Khromchenko
Abstract: The spectroradiometric characterization of the NIST indoor pulsed solar simulator is described. The solar simulator has a flash duration of 36.4 ms and is designed for solar panels having a maximum size of 2.0 m by 1.6 m. As per industry standards, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904077

8. A Comparison of Predicted to Measured Photovoltaic Module Performance
Report Number: 7335
Published: 3/1/2009
Authors: Arthur Hunter Fanney, Brian P Dougherty, Mark W Davis
Abstract: Computer simulation models to accurately predict the electrical performance of photovoltaic modules are essential. Without such models, potential purchasers of photovoltaic systems have insufficient information to judge the relative merits and cost e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861022

9. A Comparison of Predicted to Measured Photovoltaic Module Performance
Published: 6/27/2007
Authors: Arthur Hunter Fanney, Brian P Dougherty, Mark W Davis
Abstract: Computer simulation models to accurately predict the electrical performance of photovoltaic modules are essential. Without such models, potential purchasers of photovoltaic systems have insufficient information to judge the relative merits and cost e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861589

10. Comparison of Predicted to Measured Module Performance.
Published: 6/27/2007
Authors: Arthur Hunter Fanney, Brian P Dougherty, Mark W Davis
Abstract: Computer simulation models to accurately predict the electrical performance of photovoltaic modules are essential. Without such models, potential purchasers of photovoltaic systems have insufficient information to judge the relative merits and cost e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916967



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