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성낙규(Nark-Kuy Sung),이승환(Seung-Hwan Lee),김성남(Sung-Nam Kim),이훈구(Hoon-Goo Lee),김용주(Yang-Joo Kim),한경희(Kyung-Hee Han) 전력전자학회 1997 전력전자학술대회 논문집 Vol.1997 No.-
In this paper, we compose of the stepdown chopper and the current source inverter. Because dc side current of the current source inverter pulse with twice frequency of utility, we control that modulation factor of chopper is pulsed twice frequency. Therefore if voltage across the dc reactor equal to zero, it is decreased. And we control modulation factor of the chopper to operate at maximum power point around of solar cell.
Twin converter를 이용한 전자식 안정기에 관한 연구
이상집(Sang-Chip Lee),한홍일(Hong-Il Han),성낙규(Nark-Kuy Sung),백동현(Dong-Hyun Baek),김성남(Sung-Nam Kim),한경희(Kyung-Hee Han) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
The rectifier circuit has been used in the various fields of inverter progress. This is simple and low price. Otherwise, it has many problems in harmonic, low power factor and etc.<br/> This paper use the twin converter of two jewel booster. It doesn't need the detection of voltage, current and control PWM. The twin converter has stably the rectification source. Also, the circuit is used a half-bridge inverter in the electronic ballast for lighting. Therefore, this method is confirmed in high efficiency.
태양전지 전류에 의한 계통연계형 태양광발전시스템의 최대출력 제어법
박인덕(In-Duck Park),성낙규(Nark-Kuy Sung),김대균(Dae-Gwun Kim),이승환(Seung-Hwan Lee),오봉환(Bong-Hwan Oh),김성남(Sung-Nam Kim),한경희(Kyung-Hee Han) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
A step down chopper and PWM current source inverter is used for the connection between the PV array and the utility. This paper proposes chopper is controlled for the dc reactor decrease and PWM current source inverter is controlled to keep the output power at the maximum point for the PV. The PV current only is measured and employed for the power calculation combining the control parameter of the PWM current source inverter.<br/> <br/>
PWM 전류형인버터를 이용한 계통연계형 태양광 발전시스템
박춘우(Choon-Woo Park),성낙규(Nark-Kuy Sung),이승환(Seung-Hwan Lee),강승욱(Seung-Wook Kang),이훈구(Hoon-Goo Lee),한경희(Kyung-Hee Han) 전력전자학회 1996 전력전자학술대회 논문집 Vol.1996 No.-
In this paper, we composed utility interactive photovoltaic generation system of CUITent source inverter, and controlled that low harmonic and high power factor are hold py supposing control and compensation method which is concerned with synchronous signal distortion and modulation delay.<br/> And we put parallel resonant circuit into dc link, so, magnitude of direct reactance was reduce by restraining direct cuitent pulsation which had accumulation of pulsating power in alternating electrolytic condenser. Also we controlled that modulation factor is operated around maximum output of solar cell.