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고조파 발생을 위한 5[KVA]급 AC Power Source 개발
최문규(M. G. Choi),유재근(J. G. Yoo),이상익(S. I. Lee),전정채(J. C. Jeong),최규하(G. H. Choe),목형수(H. S. Mok) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
Recently the harmonic generation has declined electricity quality and has bad influence on the electrical installation including OA(Office Automation), FA(Factory Automation), IT(Information Telecommuni -cation) devices and so on. The study of harmonics be greatly interested in diagnosis accident with harmonics was not merely guesswork but clarify the cause by experimental data at these days. Therefore, it is necessary development of AC power source for correct experiment with reliable data. In this paper, we realized the AC power source that can produce and compose harmonics for analysis of accident with harmonics.
차단기류의 오동작 해석을 위한 전원왜형장치 설계 및 개발의 연구
최문규(M. G. Choi),유재근(J. G. Yoo),이상익(S. I. Lee),최규하(G. H. Choe),목형수(H. S. Mok) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
Up to recently the harmonic generation has deteriorated the quality of electricity and affected the performance on the electrical installation including OA, FA, IT devices and so on. Some studies of harmonic affects in diagnosis and the cause of accident has not done by the experimental data of harmonic source but merely by presumption according to qualitative analysis. So, in order to research the harmonic affect on the electrical installation according to quantitative analysis and gather reliable data over and over again, it is necessary to develop an AC power source which is capable of generating some harmonics. In this paper, we described about realization of Distorted Source devices which can produce and compose harmonics for the analysis of accident due to harmonics.
공간전압벡터 PWM을 이용한 7상 영구자석형 동기전동기의 구동 시스템
김한구(H.G. Kim),최문규(M.G. Choi),정병환(B.H. Jeong),목형수(H.S. Mok),최규하(G.H. Choe) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
The motor research of pre-existing attaches importance about one and three motor of reduce torque ripple and speed control. 3-Phase PMSM Motor, which is generally used, has limited usage in high speed, due to pulsation torque and variable speed. To solve this problem, it is necessary to increase invariable, pole number or the number of slots. In this paper 7-Phase PMSM Motor of Steady state analysis of Torque and Output Voltage characteristic. 7-Phase modulation method with Space Voltage Vector is studied for ideal operation of controller.