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Half-Bridge형 시분할방식 고주파 공진 인버터의 특성해석에 관한 연구
조규판(G. P. Cho),신금향(G. H. Shin),원재선(J. S. Won),김동희(D. H. Kim),노채균(C. G. Ro),심광렬(K. Y. Sim),배영호(Y. H. Bae) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
A high frequency resonant inverter consisting of three unit half-bridge serial resonant inverter used as power source of induction heating at high frequency is presented in this paper. As a output power control strategy, time-sharing gate control method is applied. The analysis of the proposed circuit is generally described by using the normalized parameters. Also, according to the calculated characteristics value, a method of the circuit design and operating characteristics of the inverter is proposed. This paper proves the validity of theoretical analysis through the experiment. This proposed inverter show that it can be practically used in future as power source system for induction heating application, DC-DC converter etc.
전단일전력단을 갖는 고역율 형광등용 전자식 안정기 구현
서철식(C. S. Seo),박재옥(J. W. Park),김해준(H. J. Kim),노채균(C. G. Ro),김동희(D. H. Kim) 한국조명·전기설비학회 2001 한국조명·전기설비학회 학술대회논문집 Vol.2001 No.-
In this paper, prototype high-power-factor single-stage electronic ballast for fluorescent lamps is designed and implemented. A new low cost single stage high power factor electronic ballast for fluorescent lamps is based on integration of two-boost converter and LC type high frequency resonant converter. A ballast is obtained by simple construction, because full bridge rectifier diode is eliminated and simple control circuit is applied. Using two boost converter operating positive and negative half cycle respectively at line frequency(60Hz), operation in discontinuous conduction mode performs high power factor. The experimental results show the good performance as PF 0.99, A<SUB>THD</SUB> 15.4%, and CF 1.65 at output 63.5W.
횡자속형 2중 공극 영구자석 동기발전기의 마그네트 형상설계
최경호(K.H. Choi),김경식(K.S. Kim),진명철(M.C.Jin),황돈하(D.H. Hwang),배성우(S.W. Bae),김동희(D.H. Kim),노채균(C.G. Ro) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(2)
This paper presents a novel design technique and characteristic analysis of Magnet for dua1 air-gap axial-flux type permanent-magnet synchronous generator. The process of magnet design is applied to the motor design and steady state analysis considering output voltage waveforms and magnetic flux waveforms.<br/> Design and construction of an axial-flux permanent-magnet generator with power output at 60 [Hz], 300 [r/min] is introduced. Finite(FE) method is applied to analyze magnet shape characteristics. The results of FE analysis show generator is feasible for use with dual air-gap axial-flux permanent- magnet synchronous generator.<br/>