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소정훈(J.H.So),유권종(G.J.Yu),정명웅(M.W.Jung),이종건(J.K.Lee),석줄기(J.K.Seok),최주엽(J.Y.Choi) 전력전자학회 2002 전력전자학술대회 논문집 Vol.- No.-
This paper compares the performances of estimate by computer simulation considering parameters of system specifications. installation and surrounding conditions with those of real PV system and show verification of designed value. We evaluate the performances of PV system with changing of parameter, specially a field type and suggest optimum condition in each field type.<br/> In the future, We will intend to develop an analysis tool and construct database for optimum design of PV system.
김형균(H.K.Kim),Ahmed Abo-Khalil,이동춘(D.C.Lee),석줄기(J.K.Seok) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(1)
In this paper, a novel nonlinear control method of the CVCF(constant voltage and constant frequency) output voltage for the three-phase PWM inverter is proposed, which gives high dynamic responses at load variation as well as zero steady-state error. The experimental results are shown to verify the validity of the proposed scheme
저강성 서보 구동시스템을 위한PD.PID 속도제어기 설계
배상규(S.G. Bae),석줄기(J.K. Seok),이동춘(D.C. Lee) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.7(2)
The purpose of this paper is to develop the straightforward design guidelines of PD/PID speed controller for industry servo drives with plug and play concept The controller gains are uniquely determined from the current control loop dynamics, speed loop delay, and mechanical parameters. In order to eliminate the mechanical friction uncertainties, an automatic PD/PI control mode switching algorithm is introduced using online spectrum analysis of motor torque command. The dynamic performance of the proposed scheme assures a fast tracking response curve with minimal oscillation and settling time over the whole operating conditions. For comprehensive comparison of conventional PI control scheme, extensive test is carried out on actual servo system.<br/>