Title :
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
fDate :
May 31 2009-June 3 2009
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;
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
DOI :
10.1109/EIC.2009.5166366
