Title :
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
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;
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
DOI :
10.1109/CEIDP.1996.564583
