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태양광 발전을 위한 대용량 소프트 스위칭 승강압 DC/DC 컨버터
김영철(Kim Young-Cheal),김재준(Kim Jae-Joon),이종근(Lee Jong-Kuen),전중함(Chun Jung-Ham),곽동걸(Kwak Dong-Kurl),이현우(Lee Hyun-woo) 전력전자학회 1996 전력전자학술대회 논문집 Vol.1996 No.-
Power conversion system must be increased switching frequency in order to achieve a small size, a light weight and a low noise. However, the switches of converter are subjected to high switching power losses and switching stresses. As a result of those, the power system brings on a low efficiency. In this paper, the authors propose a DC-DC boost converter of high power by partial resonant switch method (PRSM). The switching devices in a proposed circuit are operated with soft switching and the control technique of those is simplified for switch to drive in constant duty cycle. The partial resonant circuit makes use of a inductor using step up and a condenser of loss-less snubber. Also the circuit has a merit which is taken to increase of efficiency, as it makes to a regeneration at input source of accumulated energy in snubber condenser without loss of snubber in conventional circuit The result is that the switching loss is very low and the efficiency of system is high. The proposed converter is deemed the most suitable for high power applications where the power switching devices are used.
고강훈(Kang-Hoon Koh),이현우(Hyun-Woo Lee),김영철(Young-Cheal Kim),최광주(Kwang-Joo Choi) 한국조명·전기설비학회 1999 한국조명·전기설비학회 학술대회논문집 Vol.1999 No.-
This paper describes Trans-less type utility interactive system that is combined with buck/boost chopper applying partial resonant method, which remove Trans, and high efficient PWM inverter. Therefore, it is possible to make it lightweight, to cut down the cost, and to improve its reliability. What the merits of this system are that we can transmit arbitrary power to load and utility regardless of generating voltage magnitude and we can always obtain high factor controlling by equal phase signal with utility.