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|Title:||A Validation Study on Series Resistance Calculation According to IEC60891, Ed.2.0 (2009)|
|Authors:||POLVERINI DAVIDE; TZAMALIS GEORGIOS; MUELLEJANS Harald|
|Citation:||Proceedings of the 26th European Photovoltaic Solar Energy Conference, ISBN: 3-936338-27-2 p. 3417-3420|
|Publisher:||WIP Wirtschaft und Infrastruktur GmbH & Co Planungs KG|
|JRC Publication N°:||JRC63235|
|Type:||Contributions to Conferences|
|Abstract:||The series resistance, Rs, of a PV module is a factor that can adversely affect its performance. Several physical factors contribute to its value such as the bulk resistance of the semiconductor cell material, the metallic interconnections and the junction box terminations. An accurate determination of Rs enables a quantitative assessment of the impact of these factors on the module performance for an eventual performance optimization and an estimate of its degradation. There are several experimental methods for determining Rs; the second edition (2009) of the IEC60891 normative standard provides an iterative calculation procedure based on I-V curves measured at different irradiances. We present a quantitative investigation of the impact of the standard’s calculation parameters on the overall precision of the Rs calculation. We also analyze the Rs calculation approach of the IEC60891 first edition (1987), highlighting how this formulation has a strong operator dependence.|
|JRC Institute:||Institute for Transuranium Elements|
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