Title :
Analysis of thermal stresses in medium voltage motor coils under repetitive fast pulses
Author :
Sharifi, Emad ; Jayaram, Shesha H. ; Cherney, Edward A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada
Abstract :
The paper discusses the thermal stresses on medium voltage form-wound motor coils due to repetitive impulse and square-wave voltages. Based on the frequency spectra of such pulse trains, and their corresponding signal powers, it is proposed that a set of sinusoidal high frequency voltages of determined amplitudes can effectively produce similar thermal stresses. Both the experimental and simulation results are in agreement with the above proposed scheme.
Keywords :
coils; electric motors; pulse width modulation; thermal stresses; form-wound motor coils; frequency spectra; medium voltage; repetitive impulse; sinusoidal high frequency voltage; squarewave voltage; thermal stresses; Coils; Dielectric losses; Dielectrics and electrical insulation; Medium voltage; Pulse width modulation; Space vector pulse width modulation; Switching frequency; Temperature; Thermal stresses; Voltage-controlled oscillators;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2009. CEIDP '09. IEEE Conference on
Conference_Location :
Virginia Beach, VA
Print_ISBN :
978-1-4244-4557-8
Electronic_ISBN :
0084-9162
DOI :
10.1109/CEIDP.2009.5377759
