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.
Dynamic Modeling of Si-based Photovoltaic Modules using Impedance Spectroscopy Technique / De Riso, M.; Matacena, I.; Guerriero, P.; Daliento, S.; Garcia Marrero, L. E.; Petrone, G.. - (2023), pp. 430-435. (Intervento presentato al convegno 2023 International Conference on Clean Electrical Power, ICCEP 2023 tenutosi a ita nel 2023) [10.1109/ICCEP57914.2023.10247369].
Dynamic Modeling of Si-based Photovoltaic Modules using Impedance Spectroscopy Technique
De Riso M.;Matacena I.Secondo
;Guerriero P.;Daliento S.;
2023
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
