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Browse Journals & Magazines > Energy Conversion, IEEE Trans ...> Volume:20 Issue:4 Help

Effectiveness of stress grading coatings on form wound stator coil groundwall insulation under fast rise time pulse voltages

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3 Author(s)
Espino-Cortes, F.P. ; Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Ont., Canada ; Cherney, E.A. ; Jayaram, S.

In this paper, the effectiveness of stress grading coatings (SGCs) on form wound stator coil groundwall insulation under fast rise time pulses is analyzed. The combined performance of the stress grading coating and the semiconductive slot coating is studied under fast rise time transient voltages. During the rapid rise of voltage, the high stress moves from the stress grading coating to the semiconductive coating at the end of the slot. According to the results, it is evident that the design of both the stress grading and semiconductive slot coatings must be done together for effective stress relief. The use of materials with varistor behavior in the stress grading coating, combined with a high conductivity semiconductive slot coating, is analyzed as a solution to the high stress that develops at the slot end of form wound stator coil groundwall insulation of inverter fed drive (IFD) motors.

Published in:
Energy Conversion, IEEE Transactions on  (Volume:20 ,  Issue: 4 )

Date of Publication: Dec. 2005

Page(s):
844 - 851
ISSN :
0885-8969
INSPEC Accession Number:
8677154
Digital Object Identifier :
10.1109/TEC.2005.853745
Product Type:
Journals & Magazines
Date of Current Version :
05 December 2005
Issue Date :
Dec. 2005
Sponsored by :
IEEE Power & Energy Society

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