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- 저자 : 문제민(J.M. Mun) (검색결과 2 건)
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이성룡(S.R.Lee),고성훈(S.S.Ko),문제민(J.M.Mun),권혁대(H.D.Kwon) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.11
Recently, UPS(Uninterruptible Power Supply) have been largely used to Improve power souse quality as well as to protect critical loads such as computer, industrial system, medical equipment, etc, against power outage by providing clean and uninterrupted power under power supply disturbance or interruptions. But UPS is bulky because used battery. So, UPS size issue have received attention in the power electronics industry.<br/> Therefore, this paper proposed a implementation of inside of the computer power supply with UPS by the one-chip microprocessor to minimize UPS size. To verify the proposed power supply, the detail simulation and experiment results indicate that high-frequency switching and operation UPS can be achieved.
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자동차 이중전원 시스템을 위한 새로운 ZVS 양방향 CUK DC/DC 컨버터
이성룡(S.R. Lee),이수원(S.W. Lee),고성훈(S.H. Ko),문제민(J.M. Mun) 전력전자학회 2004 전력전자학술대회 논문집 Vol.- No.-
Currently, to overcome the limit of a 14V power supply system and to enhance the stability of this system high and to make the fuel efficiency better, a research development of a 42V power supply system is actively the progress. As an intermediate step to change into an unity power supply system, a 42V/14V dual power supply system uses a DC/DC Converter as one of structure elements. Considering the main electric power sources in the next generation of the car is a 42V system, a 14V power supply system has advantages as follows : to be managed efficiently and to increase the redundancy at start, to jump start with any vehicles, etc. We need the introduction of a bi-directional converter that can flow the energy each other in a dual 42V-12V system. This paper proposed the ZVS bi-directional CUK DC/DC converter which decrease the weight with the size of the DC/DC Converter and minimize the loss when the switching happen. In this paper, a circuit design method and an action principle of the circuit was proposed. To verify the proposed circuit, a comprehensive evaluation with theoretical analysis, simulation results is presented.
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