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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.
이상익(S.I Lee),유재근(J.G Yoo),전정채(J.C Jeon),전현재(H.J Jeon),허혜성(H.S Heo),최규하(G.H Choe) 전력전자학회 2007 전력전자학술대회 논문집 Vol.- No.-
This paper presented a actual conditions on a false-tripping of ELB(Earth Leakage Breakers) and an assessment of the harmonics due to non-linear electronic equipment such as personal computers, rectifier, electric furnace and test equipments in plant installations. Actual conditions on a failure of ELB were surveyed and analyzed by making up a question to safety managers of plant installations. Also, power quality measurements such as harmonic currents, voltage and current waveform and current imbalance were made at various plant installations where nuisance tripping of ELB is often occurred. The results of this study can be used in making decisions regarding cause of ELB trip and operating and tripping characteristics test of ELB when subjected to distorted current waveform.
이상익(S.I Lee),유재근(J.G Yoo),전정채(J.C Jeon),전현재(H.J Jeon),허혜성(H.S Heo),최규하(G.H Choe) 전력전자학회 2007 전력전자학술대회 논문집 Vol.- No.-
Recently the harmonic generation has deteriorated the quality of electricity and affected the performance on the electrical installation including personal computer, fax, community 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 Harmonic power source which is capable of generating some harmonics. In this paper, we described about realization of Harmonic power source control module which can produce and added harmonics for the analysis due to harmonic effects.