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권혁대(H.D. Kwon),박천성(C.S. Park),조성필(S.P. Jo),고성훈(S.H. Ko),이수원(S.W. Lee),이성룡(S.R. Lee) 전력전자학회 2008 전력전자학술대회 논문집 Vol.- No.-
This paper deals with the electric energy saving system for lighting with power conditioning, which aims at the integration of power quality improvement and energy saving. The system consists of a CCVSI(Current-Controlled Voltage Source Inverter) and VCVSI(Voltage-Controlled Voltage Source Inverter). The CCVSI is connected in parallel to a grid, which can be operated to compensate the reactive power demanded by nonlinear and variation loads. The VCVSI is connected to the CCVSI through the DC capacitor (DC side) and in series on the AC side(lighting load), which can perform the energy saving. The operation of the proposed system is confirmed through the simulation and its usefulness is discussed.
가정용 전력소비형태 분석을 위한 모니터링 프로그램 구현
유원호(W.H Yoo),권혁대(H.D Kwon),최재혁(J.H Choi),고성훈(S.H Ko),전칠환(C.H Jeon),이성룡(S.R Lee) 전력전자학회 2008 전력전자학술대회 논문집 Vol.- No.-
This paper presents a implementation of the monitoring program for the analysis of electric consumption characteristics in home appliances, which uses a Labview program from National Instruments Corporation. It is can provide to be easy for small-scale researcher, development groups or individual researcher to analyze electric power consumption characteristics. Also, this paper apply to actual private home and then, analyze result of monitoring and a database result of power quality etc, like the power consumption form, power factor and harmonic which follow season, and time zone. For this measured the apartment where the family which is four lives in the object.
이성룡(S.R.Lee),고성훈(S.S.Ko),문제민(J.M.Mun),권혁대(H.D.Kwon) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.11
Recently, UPS(Uninterruptible Power Supply) have been largely used to Improve power souse quality as well as to protect critical loads such as computer, industrial system, medical equipment, etc, against power outage by providing clean and uninterrupted power under power supply disturbance or interruptions. But UPS is bulky because used battery. So, UPS size issue have received attention in the power electronics industry.<br/> Therefore, this paper proposed a implementation of inside of the computer power supply with UPS by the one-chip microprocessor to minimize UPS size. To verify the proposed power supply, the detail simulation and experiment results indicate that high-frequency switching and operation UPS can be achieved.