Anisotropic dielectric properties of stress grading materials used in medium voltage form-wound motor coils to study thermal effects of repetitive fast pulses

Author

Sharifi, Emad ; Cherney, Edward A. ; Jayaram, Shesha H.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada

fYear

2009

fDate

May 31 2009-June 3 2009

Firstpage

333

Lastpage

337

Abstract

The paper addresses the anisotropic dielectric properties of composite dielectric materials used in the stress relief of medium voltage form-wound motor coils. Experimental results and a comprehensive coupled electro-thermal model of a form-wound coil subjected to repetitive fast pulses are presented. The study also introduces an alternative method to examine the thermal effects of repetitive fast pulses in the stress relief, using two sinusoidal waveforms with pre-selected frequencies and amplitudes.

Keywords

anisotropic media; coils; dielectric materials; dielectric properties; anisotropic dielectric properties; composite dielectric materials; electro-thermal model; medium voltage form-wound motor coils; repetitive fast pulses; stress grading materials; thermal effects; Anisotropic magnetoresistance; Coils; Conducting materials; Conductivity; Dielectric materials; Frequency; Insulation; Medium voltage; Temperature; Thermal stresses;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation Conference, 2009. EIC 2009. IEEE

Conference_Location

Montreal, QC

Print_ISBN

978-1-4244-3915-7

Electronic_ISBN

978-1-4244-3917-1

Type

conf

DOI

10.1109/EIC.2009.5166366

Filename

5166366