Simplified model of the discharge path in electrical devices by an iterative FEM procedure

Author

Feliziani, M. ; Maradei, F. ; Santani, E. ; Santucci, C.

Author_Institution

Dept. of Electr. Eng., l´´Aquila Univ., Italy

Volume

34

Issue

5

fYear

1998

fDate

9/1/1998 12:00:00 AM

Firstpage

2513

Lastpage

2516

Abstract

A simple FEM procedure is proposed to predict approximately the electrostatic discharge path in a complex configuration. The method is based on the FEM solution of the Laplace equation in order to find the maximum electrical field in the examined domain. When the calculated local electric field is greater than the electric strength of the considered material, a partial discharge event is imposed in the numerical procedure and modelled by an equipotential segment. The procedure continues iteratively to solve the Laplace equation modifying adequately the boundary conditions at each iteration to approximate the breakdown discharge path. Details of the FEM implementation and numerical results of the proposed iterative procedure are given

Keywords

Laplace equations; electric fields; electric strength; electrostatic discharge; finite element analysis; iterative methods; ESD; Laplace equation; boundary conditions; complex configuration; discharge path prediction; electric strength; electrical devices; electrostatic discharge path; equipotential segment; iterative FEM procedure; local electric field; maximum electrical field; numerical procedure; Boundary conditions; Electric breakdown; Electromagnetic compatibility; Electrostatic discharge; Error analysis; Finite element methods; Laplace equations; Numerical models; Partial discharges; Predictive models;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.717579

Filename

717579