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논문 기본 정보

자료유형
학술저널
저자정보
정수진 (한국자동차연구원) 문성준 (한국자동차연구원) 김일주 (광림) 김태훈 (마산대학교)
저널정보
한국자동차공학회 한국자동차공학회논문집 한국자동차공학회논문집 제31권 제11호
발행연도
2023.11
수록면
883 - 893 (11page)
DOI
10.7467/KSAE.2023.31.11.883

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초록· 키워드

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To minimize air and noise pollution during the operation of a special vehicle, the hybrid E-PTO(Electric Power Take-Off) system has been developed recently. In this study, a three-dimensional, multi-phase CFD model simulated the E-PTO’s cooling performance inside an oil-cooled PMSM motor. Using the CFD model, the cooling performance of each major part of the motor were studied under two operating conditions and different oil flow rates. Moreover, the increase in temperature of major parts, including bearings controlled by the oil jacket cooling, was analyzed, and the effect of the flow characteristics of the air gap between the rotor and the stator on the cooling of the rotor was also examined. Furthermore, the rise in temperature and temperature distribution of each important part of the motor were identified. Based on the analysis, it was confirmed that the temperature was highest in the bearing. It was observed that the cooling of the magnets located near the outlets of the cooling oil was insufficient, and high temperature was maintained because the cooling oil was not uniformly distributed to each micro channel. Likewise, there was a total of 37 Taylor vortices in the air gap, and the area with vortices had a Nu number that was about 1.5 times higher than the area without vortices.

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Abstract
1. 서론
2. 수치해석
3. 해석결과
4. 결론
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