Effect of Voltage Rise Time on Time-to-Failure of Form-Wound Stator Coil Enamelled Turn Insulation

被引：0
|
作者：
Moonesan, Mohammad Saleh [1 ]
Jayaram, Shesha [1 ]
Cherney, Edward [1 ]
Omranipour, Ramtin [2 ]
Ul Haq, Saeed [2 ]
机构：
[1] Univ Waterloo, Elect & Comp Engn Dept, Waterloo, ON N2L 3G1, Canada
[2] GE Power Convers, Gen Elect Canada, Peterborough, ON, Canada
来源：
2014 ELECTRICAL INSULATION CONFERENCE (EIC) | 2014年
基金：
加拿大自然科学与工程研究理事会;
关键词：
Turn Insulation; Form-Wound; Square wave; Rise Time; Aging; Time-to-Failure; WAVE-FORMS; PULSE;
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：
The paper presents the results of aging of medium voltage stator coil enamelled turn insulation under square waves having rise times of 270 ns and 4.5 mu s. Unipolar square waves having a peak voltage of 2.5 kV and a switching frequency of 3 kHz were applied to enamelled wire samples while measuring online partial discharge. A two-parameter Weibull distribution was employed for analysis of the effect of rise time on insulation life. The tests were repeated at 6 kV peak with duty cycles of 15% and 50% for both rise times. The analysis indicates that insulation life is dependent on voltage rise time only when the DC component of the wave is short.
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页码：167 / 171
页数：5
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