Finite element field analysis of nonuniform surface contaminations on high voltage windings of electric machines

Author

Weeber, K. ; Stutt, M. ; Dymond, J. ; Rehder, R.

Author_Institution

GE Canada, Peterborough, Ont., Canada

Volume

1

fYear

1996

fDate

20-23 Oct 1996

Firstpage

40

Abstract

The analysis of electric fields in insulation systems containing conductive materials such as surface contaminations or grading tapes requires the solution of the complex Laplace equation. This paper presents two techniques of modeling thin conductive layers on the insulation of high voltage electric machines with electrodynamic finite element simulations. Case studies are performed to illustrate the benefits of employing finite element techniques to resolve failures due to contaminated conditions of high voltage windings and to optimize the grading systems to achieve minimum stress concentrations

Keywords

Laplace equations; electric fields; finite element analysis; machine insulation; machine windings; surface contamination; complex Laplace equation; conductive materials; electric fields; electric machines; electrodynamic finite element simulations; finite element field analysis; grading tapes; high voltage windings; minimum stress concentrations; nonuniform surface contaminations; thin conductive layers; Conducting materials; Conductivity; Dielectrics and electrical insulation; Electric machines; Finite element methods; Frequency; Laplace equations; Stress; Surface contamination; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1996., IEEE 1996 Annual Report of the Conference on

Conference_Location

Millbrae, CA

Print_ISBN

0-7803-3580-5

Type

conf

DOI

10.1109/CEIDP.1996.564583

Filename

564583