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이승요(S.Y. Lee),성덕만(D.M. Sung),최규하(G.H. Choe),강정유(J.Y. Kang),황희융(H.Y Hwang),장도현(D.H. Jang) 전력전자학회 1996 전력전자학술대회 논문집 Vol.1996 No.-
This paper presents active silencer by hysteresis control method using DSP-scheme and shows its audible noise reduction effect. Pentium processor and sound blaster 16 are used for its implementation. The sound blaster 16 executes A/D, D/A conversion and is used operating source of loudspeaker for cancelling.
한석우(S.W. Han),최규하(G.H. Choe),장도현(D.H. Jang),신우석(W.S. Shin),김훙근(H.G. Kim) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.7
Voltage harmonics resulting from current harmonies produced by the nonlinear loads have become a serious problem, in many systems. Moreover momentary interruptions and voltage sags are responsible for many of the power quality problems found in typical industrial plants In this paper, proposed power quality compensate system using photovoltaic system is not only for harmonic compensation but also for harmonic isolation between supply and load, and for voltage regulation and unbalance compensation. Through computer simulations, we have verified the effectiveness of the proposed system.
안중록(J.R.Ahn),권명일(M.I.Kwon),장도현(D.H.Jang) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(1)
In this paper, resonant Characteristics of the soft switched asymmetrical half bridge converter is analysis The operation principle for proposed converter is explained in steady state and its circuit is analyzed by means of equivalent circuit. Experimental results carried out on a system prototype are included in this paper