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Single-Stage PFC AC/DC Full Bridge Converter의 소프트 스위칭에 관한 연구
임경내(Kyoung-Nae Lim),성병기(Beang-Gee Sung),계문호(Moon-Ho Kye),권순재(Soon-Jae Kwon),김철우(Cheul-U Kim) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
This paper proposes a new soft switching single stage AC/DC full bridge converter with unit power factor and isolated output. This circuit shows that it is possible to combine the boost converter which is for PFC(Power Factor Correction) and full bridge converter which is for DC/DC converter. A simple auxiliary circuit which includes neither lossy components nor active switches eliminates ringing of secondary side of the transformer. The characteristics of proposed circuit are investigated and the validity is verified by the simulation results.<br/> <br/>
유도전동기의 PWM제어와 누설 축전류 발생 모델링에 관한 연구
이재호(Jae-Ho Lee),임경내(Kyoung-Nae Lim),전진휘(Jin-Hwi Jun),박성준(Sung-Jun Park),김철우(Cheul-U Kim) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
A PWM inverter with an induction motor often has a problem with a high-frequency leakage current that flows through the distributed electrostatic capacitance from the motor windings to ground. This paper presents an equivalent circuit for high-frequency leakage currents in PWM inverter feeding an induction motor, which forms an LCR series resonant circuit.<br/> <br/>