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Im, D.H.;Kwon, B.I.;Lee, J.H.;Woo, K.I.;Kim, C.E.
- Proceedings of the KIEE Conference
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- 대한전기학회 1995년도 하계학술대회 논문집 A
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- pp.56-58
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- 1995
Dynamic characteristics of the vector controlled induction motor has been analysed using d-q equivalent circuit. However, for the design of the induction motor, the analysis of an accurate response characteristic are needed. In this paper, dynamic characteristic analysis method using 2-D Finite Element Method (FEM), which takes the motion equation of the rotor into account and considers the physical motion of the rotor by an automatic subdivision of mesh, are explained.
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Kim, C.H.;Lee, Y.H.;An, H.J.;Hwang, D.H.;Park, D.Y.;Huh, I.G.;Choi, B.W.
- Proceedings of the KIEE Conference
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- 대한전기학회 2000년도 하계학술대회 논문집 B
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- pp.690-692
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- 2000
In this paper voltage distribution in the windings of an inverter fed induction motor is studied. High frequency parameters of the induction motor are calculated using finite element analysis. With these parameters. a high frequency equivalent circuit of the inverter-cable-motor is formed. The transient analysis is performed using ATP-EMTP package to estimate the voltage distribution in the motor windings.
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Cho, Y.H.;Lee, J.B.;Koo, D.H.;Ha, H.D.;Ryu, W.H.
- Proceedings of the KIEE Conference
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- 대한전기학회 1995년도 하계학술대회 논문집 A
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- pp.27-29
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- 1995
This paper presents the design and characteristics analysis of induction machine for diesel-electric hybrid vehicle powertrain. Diesel-electric hybrid vehicles are very efficacious in reduction of consumption energy, environment pollution and saftly yields with high dynamic of machines. However, their sophisticated construction requires from designers both complex made-technology and control strategy which would be able to put into practice this requirements. These problems are still considered in processing the design and analysis of induction machine. The requirements for a given volume, input power to weight ratio, high efficiency and wide speed range are met by the induction machine.
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Kim, T.S.;Kim, W.;Kim, D.H.;Kim, B.
- Journal of Surface Science and Engineering
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- 제40권4호
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- pp.185-189
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- 2007
A scanning electron microscope (SEM) is a complex system, consisting of many sophisticated components. For a systematic characterization, a $2^4$ full factorial experiment was conducted. The SEM components examined include condenser lens 1 and 2 (denoted as A and B, respectively), and Objective lens (coarse and fine-denoted as C and D respectively). A statistical analysis was conduced to investigate factor effects and variations In response surfaces. Among four factors, main effect analysis revealed that A and D were Identified as the dominant factor. Moreover, B showed conflicting effect against C. The $R^2$ of statistical regression model constructed was about 69.6%. The model generated 3D response surface plots facilitated understanding of complex tactor effects.
https://doi.org/10.5695/JKISE.2007.40.4.185 인용 PDF KSCI

Kim, Chang-Jin;Lee, In-Kyoung;Yun, Bong-Sik;Yoo, Ick-Dong
- Microbiology and Biotechnology Letters
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- 제21권4호
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- pp.322-328
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- 1993
During the screening of antifungal compounds from microbial secondary metabolites to control phytophthora blight of red pepper caused by Phytophthora capsici, a soil isolate, strain 38D10 was selected. Based on taxonomic studies, this strain was identified as Streptomyces neyagawaensis. The antifungal compound was purified from culture broth by HP-20 column chromatography, ethyl acetate extraction, silica gel column chromatography, HPLC and identified as concanamycin B by UV. $^1H$-NMR, $^{13}C$-NMR, SIMS analysis. Concanamycin B has strong antifungal activity against some phytopathogenic fungi but not antivacterial activity and preventive value were 50% and 100% at 125ppm and 250ppm in pot assay.
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