In this article we present a fluid model for the numerical simulation of electric charge transport and accumulation inside a polymeric solid dielectric material. The model is bipolar and dynamic, that is, the dynamics of two kinds of charge carriers, electrons and holes, are simulated over time. The considered transport mechanisms are drift due to electric field and diffusion due to charge carriers' concentration gradients. Source and sink terms for the species are described by means of trapping, detrapping and recombination coefficients. We describe the implementation of a finite-volume one-dimensional solver written in Fortran 90, based on the described model. We use the code to simulate the charging process of a dielectric specimen under an HVDC field. The effect of several model parameters on the temporal behavior of the computed polarization current is investigated by performing a sensitivity analysis. Starting from the parameter values suggested by other authors, we isolate two distinct sets of values that allow to fit an experimentally measured polarization current.

Numerical simulations of polymeric dielectric polarization current: Sensitivity analysis / Ragazzi F.; Popoli A.; Pierotti G.; Seri P.; Cristofolini A.. - ELETTRONICO. - (2023), pp. 1-6. (Intervento presentato al convegno 2023 IEEE International Conference on Environment and Electrical Engineering and 2023 IEEE Industrial and Commercial Power Systems Europe, EEEIC / I and CPS Europe 2023 tenutosi a uc3m, esp nel 2023) [10.1109/EEEIC/ICPSEurope57605.2023.10194749].

Numerical simulations of polymeric dielectric polarization current: Sensitivity analysis

Ragazzi F.;Popoli A.;Pierotti G.;Seri P.;Cristofolini A.
2023

Abstract

In this article we present a fluid model for the numerical simulation of electric charge transport and accumulation inside a polymeric solid dielectric material. The model is bipolar and dynamic, that is, the dynamics of two kinds of charge carriers, electrons and holes, are simulated over time. The considered transport mechanisms are drift due to electric field and diffusion due to charge carriers' concentration gradients. Source and sink terms for the species are described by means of trapping, detrapping and recombination coefficients. We describe the implementation of a finite-volume one-dimensional solver written in Fortran 90, based on the described model. We use the code to simulate the charging process of a dielectric specimen under an HVDC field. The effect of several model parameters on the temporal behavior of the computed polarization current is investigated by performing a sensitivity analysis. Starting from the parameter values suggested by other authors, we isolate two distinct sets of values that allow to fit an experimentally measured polarization current.
2023
Proceedings - 2023 IEEE International Conference on Environment and Electrical Engineering and 2023 IEEE Industrial and Commercial Power Systems Europe, EEEIC / I and CPS Europe 2023
1
6
Numerical simulations of polymeric dielectric polarization current: Sensitivity analysis / Ragazzi F.; Popoli A.; Pierotti G.; Seri P.; Cristofolini A.. - ELETTRONICO. - (2023), pp. 1-6. (Intervento presentato al convegno 2023 IEEE International Conference on Environment and Electrical Engineering and 2023 IEEE Industrial and Commercial Power Systems Europe, EEEIC / I and CPS Europe 2023 tenutosi a uc3m, esp nel 2023) [10.1109/EEEIC/ICPSEurope57605.2023.10194749].
Ragazzi F.; Popoli A.; Pierotti G.; Seri P.; Cristofolini A.
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/941376
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact