Analysis of matnetic drag of electromagnetic levitation system with magnetic rails unified for both levitation and propulsion

Journal Article · · Electr. Eng. Jpn. (Engl. Transl.); (United States)

OSTI ID:6358431

Yamamura, S; Iwata, Y

The magnetically levitated railway system utilizing the attractive force produced by a normal conducting magnet is now under intensive study in many countries. In recent years, a new scheme has been proposed in which magnetic rails are used for both levitation and propulsion. In West Germany, the vehicular coils operate as a magnet of the linear synchronous motor, and the ground coils, which constitute magnetic rails, operate as an armature coil. Earlier, we proposed a similar scheme using a linear induction motor (LIM). The tangential force of the LIM gives a propulsion force and the normal force gives a lift force magnet. These unified magnetic rail systems introduce many advantages, such as reduced ground installations, a small-sized lightweight motor with small air gap and lightweight magnet. In this paper, we analyze the drag characteristics of the electromagnetic levitation system with magnetic rails unified for both levitation and propulsion. Also, we show that the unified rail system is superior to the separate rail system. It should be noted that the two systems behave in the same way as regards the magnet control and the linear induction motor.

• OSTI ID: 6358431
• Journal Information: Electr. Eng. Jpn. (Engl. Transl.); (United States), Journal Name: Electr. Eng. Jpn. (Engl. Transl.); (United States) Vol. 100:6; ISSN EENJA
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320202* -- Energy Conservation
Consumption
& Utilization-- Transportation-- Railway
DESIGN
DRAG
ELECTRIC COILS
ELECTRIC MOTORS
ELECTRICAL EQUIPMENT
EQUIPMENT
LEVITATED TRAINS
MAGNET COILS
MOTORS
PROPULSION
TRAINS
VEHICLES