Insulation problems in medium voltage stator coils under fast repetitive voltage pulses

被引：0
|
作者：
Haq, Saeed U. [1 ]
Jayaram, Shesha H. [1 ]
Cherney, Edward A. [1 ]
机构：
[1] Univ Waterloo, ECE Dept, Waterloo, ON N2L 3G1, Canada
来源：
IEEE CONFERENCE RECORD OF 2007 ANNUAL PULP AND PAPER INDUSTRY TECHNICAL CONFERENCE | 2007年
关键词：
adjustable speed drives; converters dielectric heating; groundwall insulation; induction motor; partial discharge; pulse voltage; solid-state switches;
D O I：
暂无
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：
In this research work, the degradation processes in stator bar groundwall insulation that is subjected to steep-front voltage pulses, at different temperatures, is studied. The test conditions include pulse voltage amplitudes up to 6 kVp, and pulse switching frequencies up to 3 kHz in ambient temperatures of 23 degrees C, 120 degrees C, and 155 degrees C. During the aging process, the surface temperature is monitored with an infrared camera to determine the regions with the highest temperatures, and the partial discharge (PD) activity. The visual examination of failed bars confirmed that the groundwall insulation in these regions is degraded.
引用
收藏
页码：9 / +
页数：3
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