• 대한전기학회논문지
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• 제41권1호
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• pp.18-23
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• 1992

Magnet core and rail of a magnetically levitated vehicle are usually made of highly conductive materials. Accordingly, eddy currents are induced in those members. Eddy currents often lead to a decrement of levitation and guidance force. This paper has calculated the decrement of both forces due to eddy current generated by magnet's vertical and lateral motion. U-shaped electromagnet and rail were chosen as amodel of 2D finite element analysis. Calculated results proved that both forces dropped significantly at high speed. Consequently, effects of eddy current should be considered in designing the magnet and control system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 B
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• pp.699-701
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• 2000

It leaves much room for improvement that UTM-01 is of practical use. Therefor we will design of UTM-02 system. The design of new magnet is based on light weight for bogie system. We used Maxwell-3D FEM for design of new magnet. The new magnet for UTM-02 that was reduced weight of magnet. 22kg, then it was increased ratio lift to weight is 9.87.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 하계학술대회 논문집 B
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• pp.682-684
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• 2002

There is much room for consideration that the magnet design of UTM. When the vehicle runs 60mR curved line on test track, the ratio of cross section area changed to cross the magnet pole and rail. The ratio is reduced about 20% of the total magnet on one bogie. Therefor, magnet current is increased about 3.5A to maintain constant air gap. This paper suggest to margin of the magent design is 1.1 rather than rated levitation force.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1995년도 추계학술대회 논문집 학회본부
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• pp.49-51
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• 1995

This paper deals with the magnet for Urban Transit Maglev-01 (Electro-Magnetic Suspension) which is experimented by the static magnet test bed. The test bed is developed for the hinge style. This paper shows the levitation force vs magnet current and difference of the yoke depth.