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원재선(J.S.Won),강진욱(J.W.Kang),김동희(D.H.Kim),정성균(S.G.Jung),이영식(Y.S.Lee),이봉섭(B.S.Lee) 전력전자학회 2002 전력전자학술대회 논문집 Vol.- No.-
A novel single-stage half-bridge high frequency resonant inverter using ZVS(Zero voltage Switching)with high input power factor suitable for induction heating applications is presented in this paper. The proposed high frequency resonant inverter integrates half-bridge boost rectifier as power factor corrector(PFC)and half-bridge resonant inverter into a single stage. The input stage of the half-bridge boost rectifier is working in discontinuous conduction mode(DCM) with constant duty cycle and variable switching frequency. Simulation results through the Pspice have demonstrated the feasibility of the proposed inverter This proposed inverter will be able to be practically used as a power supply in various fieleds as induction heating applications, DC-DC converter etc.
디지털적으로 제어되는 푸쉬풀 컨버터를 사용하는 유도 전동기 드라이브에 대한 연구
김남훈(N.H. Kim),백원식(W.S. Baik),최경호(K.H. Choi),원재선(J.S. Won),황돈하(D.H Hwang),김민회(M.H. Kim) 전력전자학회 2008 전력전자학술대회 논문집 Vol.- No.-
On this paper, digitally controlled push-pull dc-dc converter and dc-ac inverter for induction motor control are presented, which is used one DSP(digital signal processor). This system has 12V battery input for the push-pull converter, and the push-pull converter generates 300V output for induction motor inverter input. In order to compensate the push-pull converter, the transfer function of push-pull converter is derived and digital PI compensator is adapted. Through bode diagram, stability of digitall controlled push-pull converter is analyzed. To verify the proposed system, digital simulation of the induction motor drive using digital push-pull converter are performed.
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.
오존발생용 Forward형 고압 펄스 전원장치의 특성개선
심낙순,원재선,정도영 三陟大學校 産業科學技術硏究所 2002 産業科學技術硏究論文集 Vol.7 No.2
This paper describes the forward type high voltage pulse power supply which is the simple circuit configuration and easy to be managed using a Power-MOSFET in the view of commercialization. The principle of basic operating and the operating characteristics of the forward type pulse power supply are estimated by the switching frequency, coupling factor(k) and duty ratio(D). It is shown that theoretical and experimental results are good agreement by comparing simulation and experimental results when a lamp type ozonizer can be used as a load. This proposed pulse power supply show that it can be practically used as a pulse power supply in various environment improvement facilities like sterilization of colon bacillus, deodorization, and Nox gas elimination.