Dynamic Modeling of Si-based Photovoltaic Modules using Impedance Spectroscopy Technique

In a scenario where the deployment of photovoltaic (PV) systems is increasing, the characterization and the monitoring of the state of health are pivotal. To this aim, Impedance Spectroscopy (IS) provides useful information about the dynamics of PV generators. In this work, an equivalent electric ac...

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Bibliographic Details
Published in2023 International Conference on Clean Electrical Power (ICCEP) pp. 430 - 435
Main Authors De Riso, Monica, Matacena, Ilaria, Guerriero, Pierluigi, Daliento, Santolo, Garcia Marrero, Luis Enrique, Petrone, Giovanni
Format Conference Proceeding
LanguageEnglish
Published IEEE 27.06.2023
Subjects
ac model
Analytical models
evolutionary algorithm
Frequency measurement
Heuristic algorithms
Impedance Spectroscopy
Mathematical models
Nyquist spectrum
Photovoltaic cells
Photovoltaic systems
PV module
Spectroscopy
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Summary:In a scenario where the deployment of photovoltaic (PV) systems is increasing, the characterization and the monitoring of the state of health are pivotal. To this aim, Impedance Spectroscopy (IS) provides useful information about the dynamics of PV generators. In this work, an equivalent electric ac model for the characterization of PV modules is discussed. The model is applied to experimental spectra measured on a 52Wp c-Si based PV module in outdoor conditions. The fitting problem is solved by means of two different approaches, one based on the analytic solution of the model equations which employs few points of the experimental spectrum and the other based on an optimization algorithm, requiring the whole set of frequency points. The parameters' values obtained from both approaches are commented, providing useful information on the behavior of the PV module under test.
ISSN:2474-9664
DOI:10.1109/ICCEP57914.2023.10247369