Series resistance determination and further characterization of c-Si PV modules

Georgi Hristov Yordanov, Ole-Morten Midtgård and Tor Oskar Saetre

Renewable Energy, 2012, vol. 46, issue C, 72-80

Abstract: This paper presents a new algorithm for determination of the series resistance of crystalline-Si PV modules from individual illuminated I–V curves. The ideality factor and the reverse saturation current are then extracted in the classic way. The approach is applied to in-situ measured data from modules based on two types of mc-Si feedstock. The results indicate that the method yields physically meaningful parameters. An improved definition of local ideality factor is suggested, resulting in m-V plots unaffected by the series resistance. In addition, m-I plots are introduced for the first time. The novel differential techniques reveal an unexpected rise of the ideality factor at open circuit by about 5%.

Keywords: Series resistance; Local ideality factor; Parameter estimation; I–V curve modeling; PV module; SoG-Si (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:46:y:2012:i:c:p:72-80

DOI: 10.1016/j.renene.2012.03.012

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