견인전동기의 고장예측 및 신뢰성 평가를 위한 복합가속열화 상태진단-고전압 인가에 따른 유전손실 및 부분방전 특성연구

초록

In this paper, the complex accelerating degradation of traction motor driven with VVVF controlled inverter were performed on the form coil samples with the 200class insulation system:in order to evaluate the reliability and the long-term life. After aging, the dielectric and PD properties were investigated on the 10 cycles aging sample in the range of 20-160 C and AC 250-2250V to diagnosis the condition of end-life and find the dominative factors of degradation