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이재훈(J. H Lee),신철준(C. J. Shin),전기영(K. Y. Jeon),박춘우(C. W. Bak),전지용(J. Y. Chun),이상집(S. C. Lee),오봉환(B. H. Oh),정춘병(C. B. Chung),한경희(K. H. Han) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
There is an application which uses smoothing reacter connecting each of the phases in order to make the system smaller comparison with an application using the insulating transformer in the utility interactive photovoltaic generation system using the PWM converter. In this case, there might be the occurence of the unbalance of output voltage, by the difference of smoothing reactor, connected on each of the lines. Therefore this study proposes that the method which maintains the balance and compensates the unblance which occured by the different volume of the smoothing reactor connected on each of the lines.
이재훈(J. H Lee),김은기(E. G Kim),전기영(K. Y Jeon),전지용(J. Y Chun),이승환(S. H Lee),오봉환(B. H Oh),이훈구(H. G Lee),한경희(K. H Han) 전력전자학회 2007 전력전자학술대회 논문집 Vol.- No.-
In this paper, The authors design the current controller which independently control the d, q axis current transformed by the synchronously rotating d, q axis and a Space Vector Pulse Width Modulation(SVPWM) to steadily control the output DC-Link voltage against the variable load of the three phase PWM converter. Also, This study improves the high power factor, stability, and rapid response by the phase angle control using the digital Phase Locked Loop(PLL).
이사영(S.Y.Lee),오봉환(B.H.Oh),이복구(B.K.Lee),김봉희(B.H.KJm),전지용(J.y.Chun),김길동(G.D.Kim),박현준(H.J.Park) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
It is one of the most effective methods for improving the performance of electric railway vehicles to make better the wheel-railway adhesion characteristics. The purpose of this paper is to develop the equivalent reduction machine to experiment on the adhesion system. The experiment system makes it possible to change the wheel-rail adhesion force with various adhesion parameters, and therewith to test the adhesion control system with the reduction machine in a laboratory.
BLDC 모터 구동을 위한 신경회로망 PI파라미터 자기 동조 시뮬레이터
배은경(E. K. Bae),권중동(J. D. Kwon),김태우(T. W. Kim),김대균(D. K. Kim),전지용(J. Y. Chun),이승환(S. H. Lee),이훈구(H. G. Lee),김용주(Y. J. Kim),한경희(K. H. Han) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
In this paper proposed to Neural network PI self-tuning direct controller using Error beck propagation algorithm. Proposed controller applies to speed controller and current controller. Also, this built up the interface environment to drive it simply and exactly in any kind of reference, environment fluent and parameter transaction of BLDC motor. Neural network PI self-tuning simulator using Visual C++ and Matlab Simulation is organized to construct this environment. Built-u-p interface has it's own purpose that even the user who don't have the accurate knowledge of neural network can embody operation characteristic rapidly and easily.