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고조파 저감을 위한 직렬형 능동 전력 필터의 예측형 제어 기법
김명복(Myung-bok Kim),문건우(Gun-woo Moon),윤명중(Myung-joong Youn) 전력전자학회 2001 전력전자학술대회 논문집 Vol.2001 No.-
In this paper, a new predictive control algorithm considering the parameters of series active filter has been proposed to improve the performance. By using the proposed control scheme, the current ripple drastically reduced and an improved steady state performance can be obtained, The proposed method has another advantage in the size and cost by excluding additional passive filters The validity of the proposed method will be proved by the computer simulation.<br/> <br/>
Eigenstructure Assignment for Linear Multivariable Systems
권봉환,윤명중,Kwon, Bong Hwan,Youn, Myung Joong The Institute of Electronics and Information Engin 1987 전자공학회논문지 Vol.24 No.2
This paper generalizes the previous results of the closed-loop eigenstructure assignment via output feedback in linear multivariable systems. Necessary and sufficient conditions for the closed-loop eigenstructure assignment by output feedback are presented. Some known results on entire eigenstructure assignment are deduced from this results.
시간 지연 제어 기법을 이용한 새로운 데드 타임 보상법
김명복(Kim. Myung-Bok),김현수(Kim. Hyun-Soo),윤명중(Youn. Myung-Joong) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
A new dead time compensation method using time delay control approach is presented. The dead time m switching pattern cause the voltage distortion and it can be considered as the disturbance voltage.<br/> In this paper, the disturbance voltage is estimated using time delay control and the estimated disturbance voltage is summed with voltage command in predictive current control by a feed-forward<br/> The proposed scheme is Implemented on a PMSM and the effectiveness is verified through comparative simulation.
김명복(Kim Myung-Bok),김학원(Kim Hag-Wone),김건수(Kim Geon-Su),윤명중(Youn Myung-Joong) 전력전자학회 2002 전력전자학술대회 논문집 Vol.- No.-
This paper presents the inductance calculation of compulsator by obtaining the solution of Laplace equation Since the characteristic of material of compulsator makes the boundary conditions changed, this method is useful for various materials of compulsator
시스템 파라미터가 불확실한 대규모 선형련 매시간 시스템의 비집중 안정화
류준,변증남,윤명중,Lyou, Joon,Bien, Zeungnam,Youn, Myung-Joong 대한전자공학회 1985 전자공학회지 Vol.22 No.3
본 논문에서는 시스템 파라미터가 불확실한 일련의 연속시간 대규모 선청 시스템을 안정화하는 문제가 다루어졌다. 제안된 비집중 적응 제어기는 새로운 적웅궤환 제어와 기존의 선형궤환 제어를 결합한 형태로서, 전체 케루프 시스템의 안정을 보장하기 위한 충분조건이 유도되었다. 또, 제안된 방식의 유용성을 보이기 위하여 컴퓨터 모사를 통한 수치예가 제시 되었다. This paper considers the problem of stabilizing a class of continuous-time large scale linear systems when the system parameters are uncertain. The proposed local adaptive controls are a combination of a new adaptive feedback control and the conventional linear feedback control. A condition of stability is derived , under which the overall closed-loop system is assured to be globally stable. Also, a numerical example is illustrated via computer simulation.
적응 관측기를 이용한 영구자석 동기전동기의 센서리스 제어
홍찬호(Chan-Ho Hong),윤명중(Myung-Joong Youn) 전력전자학회 1997 전력전자학술대회 논문집 Vol.1997 No.-
A new approach to the position sensor elimination of PM synchronous motor drives is presented in this study. Using the position sensing characteristics of PMSM itself, the actual rotor position as well as the machine speed can be estimated by adaptive flux observer and used as the feedback signal for the vector controlled PMSM drive. The adaptive speed estimation is achieved by model reference adaptive technique. The adaptive laws are derived by the Popov's hyperstability theory and the positivity concept. In order to verify the effectiveness of the proposed scheme, computer Simulations are carried out for the actual parameters of a PM synchronous motor and the results well demonstrate that the proposed scheme provides a good estimation value of the rotor speed without mechanical sensor It is also shown that the actual rotor position as well as the machine speed can be achieved under the variation of the magnet flux linkage<br/> Since the flux linkages are estimated by the adaptive flux observer and used for the identification of the rotor speed, robust estimation of the rotor speed can be performed