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Evaluation on Insulation Performance of Traction Motors for a Hybrid Vehicle by Partial Discharge Measurement  

Park, Dae-Won (한국해양대학교 전기전자공학부)
Park, Chan-Yong (한국해양대학교 전기전자공학부)
Choi, Jae-Sung (한국해양대학교 전기전자공학부)
Kil, Gyung-Suk (한국해양대학교 전기전자공학부)
Lee, Kang-Won (한국철도기술연구원 바이모달수송시스템연구단)
Publication Information
Journal of the Korean Society for Railway / v.12, no.2, 2009 , pp. 249-253 More about this Journal
Abstract
This paper dealt with the insulation evaluation by a measurement of partial discharge(PD) on traction motors used in a hybrid vehicle. The PD method has been accepted as an effective and a non-destructive. technique to evaluate insulation performance of low-voltage electric and electronic devices. In this paper, the PD measurement system which was manufactured with a coupling network, a low noise amplifier, and an associated electronics is described. The PD measurement system has the frequency bandwidth of $1[MHz]{\sim}30[MHz]$ at -3 [dB] and the stable sensitivity of 19 [mV/pC] for the traction motor. From the experimental results, discharge inception voltage (DIV) and apparent charge (q) were $1,100[V_{rms}]$ and 105 [pC] for the used motor, and $1,400[V_{rms}]$ and 84 [pC] for the new one. By comparing the DIV and q, we could evaluate the insulation condition for the traction motors.
Keywords
Insulation evaluation; Partial discharge (PD); Traction motor; Hybrid vehicle; Coupling network; Discharge inception voltage (DIV); Apparent charge (q);
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Times Cited By KSCI : 3  (Citation Analysis)
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