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http://dx.doi.org/10.4313/JKEM.2007.20.7.631

Analysis of Insulation Condition in Traction Motor Stator Windings  

Kim, Hee-Dong (한국전력공사 전력연구원)
Park, Young (한국철도기술연구원)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.20, no.7, 2007 , pp. 631-635 More about this Journal
Abstract
Diagnostic, surge and ac breakdown tests are widely used to evaluate the insulation condition of stator winding in traction motor. Diagnostic test included ac current, tan delta and maximum partial discharge. The result of diagnostic test indicates that five kinds of stator windings are good condition. Surge test was peformed to confirm the healthy of turn insulation in stator windings. This test is very easy to detect the turn insulation failure between normal and defect stator windings. After completing the diagnostic test, ac breakdown test has conducted gradually increasing ac voltage, until the stator winding punctured. No. 5 stator windings failed near rated voltage of 18.9 kV The breakdown voltage of No. 1 stator windings was 13.0 kV The ac breakdown voltage of normal winding is about 1.45 times higher than that of defect windings. The failure was located in a line-end coil at the exit from the core slot.
Keywords
Traction motor; Diagnostic test; Stator winding; Insulation; Breakdown voltage;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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