견인전동기의 고장예측 신뢰성 평가를 위한 복합가속열차 상태진단-절연저항 및 성극지수 특성연구

초록

In this paper, sample coils for stator form-wound winding of traction motor were tested by the accelerative thermal degradation, which composed of heat, vibration, moisture and overvoltage applying. Reliability and expected life were evaluated on the insulation system for 200class traction motor. After aging of 10 cycles, insulation resistance and PI properties were investigated as diagnosis tests in the range of 20-60C. Analysis of polarization properties was performed on the base of dc current-time change.