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Technical Briefs

Analysis Model of Mismatch Power Losses in PV Systems

[+] Author and Article Information
A. Chouder

Departament D`Enginyeria Electrónica, UPC, Mòdul C4, Campus Nord UPC C/Jordi Girona 1-3, Barcelona 08034, Spain

S. Silvestre

Departament D`Enginyeria Electrónica, UPC, Mòdul C4, Campus Nord UPC C/Jordi Girona 1-3, Barcelona 08034, Spainsanti@eel.upc.edu

J. Sol. Energy Eng 131(2), 024504 (Apr 02, 2009) (5 pages) doi:10.1115/1.3097275 History: Received February 13, 2008; Revised January 08, 2009; Published April 02, 2009

A novel procedure to extract and analyze the power losses, mainly due to mismatch effects, in a photovoltaic (PV) system is presented. The developed model allows the extraction of the main PV module and PV array parameters from I-V characteristics, as well as in dynamic behavior under real conditions of work. The method allows a good estimation of the mismatch effect on the total PV system power losses.

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Copyright © 2009 by American Society of Mechanical Engineers
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Figures

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Figure 1

Simulated versus Measured I-V characteristics of PV module and 3.18 kWp PV array

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Figure 2

SIMULINK model for power losses evaluation

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Figure 3

Evolution of measured and simulated currents and measured irradiance, January 6, 2008

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Figure 4

Power evolution from simulations versus monitored power and mismatch power losses obtained

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