Analysis of Thermal Stresses in Medium-voltage Motor Coils under Repetitive Fast Pulse and High-frequency Voltages

被引：22
|
作者：
Sharifi, Emad [1 ]
Jayaram, Shesha H. [1 ]
Cherney, Edward A. [1 ]
机构：
[1] Univ Waterloo, Dept Elect & Comp Engn, HVEL, Waterloo, ON N2L 3G1, Canada
来源：
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2010年 / 17卷 / 05期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Nonlinear field dependent stress grading; conductive armor tape; thermal stress; PWM and square wave voltage; coupled electro-thermal FEM modeling;
D O I：
10.1109/TDEI.2010.5595539
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The paper provides an analysis of the thermal stresses in medium-voltage form-wound motor coils that arise from pulsed width modulated, repetitive square-wave, and impulse voltages. The effects of the shape, repetition rate, and rise and fall time of the pulses are studied through experimental and computational work. Based on the frequency spectra of the pulse trains and their corresponding signal powers, it is shown that a set of sinusoidal high-frequency voltages of predetermined amplitudes can effectively produce consistent thermal stresses, and both the experimental and simulation results confirm the validity of the proposed scheme.
引用
收藏
页码：1378 / 1384
页数：7
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