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고집적 스위칭 전원을 위한 LLCT 설계 및 Half-Bridge 직렬공진 컨버터
박진영(J.Y. Park),공영수(Y.S. Kong),김은수(E.S. Kim),이혜연(H.Y Lee) 전력전자학회 2004 전력전자학술대회 논문집 Vol.- No.-
High density power supply technology has been researched over the last few years. In this paper, integrated LLCT(Inductor-Inductor-Capacitor-Transformer) structure is described for use in the half-bridge series resonant converter. The structure is analysed by means of FEMM(Finite Element Method Magnetics) and the experimental results of an LLCT structure for a 300W converter are presented.
3상 Single Stage 방식의 48V/100A급 고효율 고역률 직류 전원장치
박진영(J.Y. Park),김경환(K.H. Kim) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
This paper presents a novel, single stage, isolated, three-phase switching rectifier capable of switching at high frequency. The circuit topology provides zero-voltage switching for all switches, output voltage regulation, unity input power factor, all in a single power conversion stage. Operating principle and experimental results in the 48V/100A DC power supply of three-phase single stage method are presented.
나노결정구조 Fe - Nb - B - N 박막의 미세구조 및 자기적 특성
박진영(J. Y. Park),서수정(S. J. Suh),노태환(T. H. Noh),김광윤(K. Y. Kim),김종열(J. Y. Kim),김희중(H. J. Kim) 한국자기학회 1997 韓國磁氣學會誌 Vol.7 No.5
The microstructure and magnetic properties of Fe-Nb-B-N thin film alloys, which produced by rf magnetron sputtering method in Ar + N₂ mixed gas atmosphere, were investigated. The Fe_(70)Nb₁₄B₁₁N_5 films, annealed at 590℃, exhibit soft magnetic properties: 4 πMs = 16.5 kG, Hc = 0.13 Oe and μ_(eff) (1~10 ㎒) =5,000. The frequency stability of the Fe-Nb-B-N films has also been found to be good up to 10 ㎒.<br/> The Fe-Nb-B-N thin film alloys annealed at 590℃ consist of three phase; fine crystalline α-Fe phase with grain size of about 5~10 ㎚, Nb-B rich amorphous phase and Nb-nitride precipitates with the size of less than 3 ㎚. Annealed Fe-Nb-B films have two phases; α-Fe grains with the size of about 10 ㎚ and NbB rich amorphous phase. The addition of N decreased α-Fe grain size due to the precipitation of NbN. The good magnetic properties of the Fe-Nb-B-N film alloys are due to fine α-Fe grains resulting from the precipitation of NbN.