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논문 기본 정보

자료유형
학술저널
저자정보
박형준 (동아대학교) 강효림 (동아대학교) 한승호 (동아대학교)
저널정보
한국기계가공학회 한국기계가공학회지 한국기계가공학회지 제23권 제7호
발행연도
2024.7
수록면
111 - 117 (7page)

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초록· 키워드

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Solenoid valves convert electrical signals into electromagnetic energy and output it as mechanical kinetic energy to control the flow rate of a working fluid by opening and closing a valve. They provide fast dynamic response characteristics, making them applicable in automotive and aerospace fields that utilize hydrogen fuel cells. To ensure a stable supply of gaseous hydrogen to the fuel cell stack, solenoid valves require a sufficient attraction force to open the valve in high-differential pressure environments. This attraction force is generated by electromagnetic force in the coil bobbin, but the heat generated by the coil owing to applied currents can lead to a decrease in the attraction force. This may hinder the opening of the valve. Hence, it is important to estimate the attraction force associated with the temperature rise of the coil. In this study, the change in attraction force owing to the heat generation of the coil was evaluated using electromagnetic and heat transfer analysis for a direct-acting solenoid valve used in the hydrogen fuel cell. From the electromagnetic analysis considering the high permeability of the core, case, disk, and plunger, an attraction force of 163 N was obtained after 80 ms. During the operation of the solenoid valve, there was a copper loss of approximately 71.4 W in the coil, and the heat transfer analysis provided a saturated coil temperature of 158℃ after 3,600 s. As the coil temperature increased, the resistance increased, causing a decrease in the attraction force. At a saturation temperature of 158℃, the attraction force of the solenoid valve decreased to 115.4 N.

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ABSTRACT
1. 서론
2. 솔레노이드 밸브
3. 전자기 해석
4. 열전달 해석
5. 고찰
6. 결론
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