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홍순흠(S. H. Hong),한송엽(S. Y. Hahn),차귀수(G. S. Cha) 한국자기학회 1994 韓國磁氣學會誌 Vol.4 No.2
This paper deals with the magnetic forces of the combined levitation and guidance EDS(Electrodynamic Suspension) maglev system when the car bogie is tilted by the roll, pitch and yaw. The end effect on the magnetic forces are considered by calculating the air-gap flux without the assumptions for its pattern. Induced voltages and currents of the ground coils are given as results. The restoring torque due to roll, pitch and yaw of the bogie body are also examined. It has been shown that the end effect of the concentrically loaded vehicle are not negligible and the combined EDS is stable maglev system against disturbing forces.
박차식,안태길,박경우,김도형,차귀수,서정식,Park, C.S.,Ahn, T.K.,Park, K.W.,Kim, D.H.,Cha, G.S.,Seo, J.S. 한국초전도저온학회 2009 한국초전도저온공학회논문지 Vol.11 No.3
The thermal characteristics of quench propagation is a crucial problem for the stability of the superconductor. The objective of this study is to simulate the quench propagation with the variation of disturbance energy in Bi-2223/Ag HTS pancake coil. In this analysis, the temperature-time trace of a point away from heater was calculated under conditions of different quench energy. The critical disturbance energy between quench propagation and quench recovering was calculated, In addition, the minimum quench energy with different transport currents was obtained through the present simulation. These results are significant to the application of HTS.