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노의철(E.C. Nho),이영호(Y.H. Lee),민병호(B.H. Min),김인동(I.D. Kim),전태원(T.W. Chun),김흥근(H.G. Kim),최남섭(N.S. Choi) 전력전자학회 2007 전력전자학술대회 논문집 Vol.- No.-
A new 3-phase voltage disturbance generator is proposed. The voltage drop of the conventional generator in normal mode can be reduced significantly. The output voltage of the proposed generator is constant in normal mode and the efficiency of the series transformer is improved. The proposed generator has good feature of simple structure, cost effective implementation, high reliability, high efficiency, and easy control. The usefulness of the scheme is verified through simulation and experiments.
100㎾급 순간정전 및 위상급변 발생기의 출력 전압변동 해석
노의철(E.C. Nho),박해영(H.Y. Park),김진영(J.Y. Kim),김인동(I.D. Kim),전태원(T.W. Chun),김흥근(H.G. Kim) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10
This paper deals with output voltage characteristics analysis of outage and phase jump generator. As soon as the outage occurs the STS(Solid Transfer Switch)s are switched off. At the beginning of the outage the DG is required to limit the reverse current within the rated DG output current. In case of phase jump the DG output voltage phase should be adjusted with PLL. Simulation results show the output voltage characteristics of the generator.
이병철(B.C. Lee),최성훈(S.H. Choi),팽성환(S.H. Paeng),노의철(E.C. Nho),김인동(I.D. Kim),전태원(T.W. Chun),김흥근(H.G. Kim) 전력전자학회 2004 전력전자학술대회 논문집 Vol.- No.-
This paper deals with power quality disturbance generator with phase jump function. The proposed generator can be applied to the performance test of custom power devices. Voltage sag, swell, outage, unbalance and phase jump after outage are provided by the generator. The phase jump operating principle of the generator is described and analysed. The control scheme of the disturbance generator is simple and hardware setup is cost effective compared with the conventional scheme. The usefulness of the generator is verified through simulation and experimental results.
전력품질 개선장치를 위한 간단한 구조의 전압변동 발생기
이병철(B.C. Lee),최성훈(S.H. Choi),팽성환(S.H. Paeng),노의철(E.C. Nho),김인동(I.D. Kim),전태원(T.W. Chun),김흥근(H.G. Kim) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
This paper deals with a simple structured voltage disturbance generator for power quality improving devices. The proposed generator can be applied to the performance test of custom power devices. Voltage sag, swell, outage, unbalance and phase jump after outage are provided by the generator. The improving phase jump operating principle of the generator is described and analysed. The usefulness of the generator is verified through simulation.
비선형 부하를 위한 임의의 위상 급변 및 전압제어가 가능한 전력품질 외란 발생기
박성대(P.S. Park),노의철(E.C. Nho),김인동(I.D. Kim),최남섭(N.S. Choi),전태원(T.W. Chun),김흥근(H.G. Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
This paper deals with a simple structured power quality disturbance generator for nonlinear load devices. The proposed generator can be applied to the performance test of custom power devices. Voltage sag. swell, outage. unbalance and phase jump after outage are provided by the generator. The improving phase jump operating principle of the generator is described and analysed. The usefulness of the generator is verified through simulation.
Modified 멀티레벨 컨버터 기반 펄스모드 동작 직류전원장치
안종수(J.S.Ahn),노의철(E.C.Nho),김인동(I.D.Kim),김홍근(H.G.Kim),전태원(T.W.Chun) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(1)
This paper describes a high voltage high power DC power supply which has the ability of pulsed mode operation. The power supply is constructed with several series connected power converters based on modified multilevel converters. The modified multilevel converters are suitable for the protection of frequent output short-circuit The output dc power of the proposed converter can be disconnected from the load within several hundred microseconds at the instant of short-circuit fault The using time of the dc load voltage is as small as several hundred microseconds, and there is no overshoot of the dc voltage because the dc output capacitors keep undischarged state Analysis, simulations, and experiments are carried out to investigate the operation and usefulness of the proposed scheme
펄스모드 스위칭 직류전원 장치에 적합한 AC/DC 컨버터
문상호(S.H.Moon),노의철(E.C.Nho),김인동(I.D.Kim),김흥근(H.G.Kim),전태원(T.W.Chun) 전력전자학회 2002 전력전자학술대회 논문집 Vol.- No.-
This paper describes a novel multilevel ac/dc power converter suitable for the protection of frequent output short-circuit. The output dc power of the proposed converter can be disconnected from the load within several hundred microseconds at the instant of short-circuit fault. The rising time of the de load voltage is as small as several hundred microseconds, and there is no overshoot of the dc voltage because the dc output capacitors keep undischarged state, Analysis and simulations are carried out to investigate the operation and usefulness of the proposed scheme