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정세교(Se-Kyo Chung),신휘범(Hwi-Beom Shin),이현우(Hyun-Woo Lee) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.11
This paper presents a high frequency (HF) link current-fed inverter for fuel cell applications The circuit topology, operation and control method of the proposed HF link current-fed inverter are presented The active cancellation technique of the 120Hz input harmonic current IS also considered The simulation results are provided to show the feasibility of the proposed inverter scheme.
PLL 보상루프를 이용한 단상 PWM 인버터의 정밀 전압제어
정세교(Se-Kyo Chung),최성락(Seong-Rak Choi),최진우(Jin-Woo Choi) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.-
This paper presents a precision voltage control technique of a single phase PWM inverter for a constant voltage and constant frequency(CVCF) applications. The proposed control employes a PLL compensating loop which minimize the steady state error and phase delay. The computer simulation and experiment are carried out for the actual single phase PWM inverter and the results well demonstrate the effectiveness of the proposed control.<br/> <br/>
3상 SiC MOSFET 인버터용 게이트 드라이버 전원 설계
이상용(Sang-Yong Lee),정세교(Se-Kyo Chung) 전력전자학회 2021 전력전자학술대회 논문집 Vol.2021 No.7
The design of a power supply circuit for the gate drivers of a three-phase inverter using a silicon carbide (SiC) MOSFET is presented. The requirements of the gated drive power supply for the SiC MOSFET are in vestigated and a flyback converter with multiple transformers is used as an efficient method which can be implemented in a limited space. The circuit for a three-phase SiC MOSFET inverter for driving an AC motor is designed and implemented. The operation of the circuit is verified through simulation and experiment.