Attractive levitation for high-speed ground transport with large guideway clearance and alternating-gradient stabilization

Author

Hull, John R.

Author_Institution

Argonne Nat. Lab., IL, USA

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

3272

Lastpage

3274

Abstract

The author describes an attractive levitation concept that results in large guideways clearance and low magnetic drag and requires no feedback for stability. Dynamic stability is achieved by establishing alternating gradients of force in which the spatial dependence of the attractive force between the superconducting coils on the vehicle and the iron rails in the guideway is altered by periodic changes in the rail configuration. For a vehicular velocity of 500 km/h, the appropriate lengths for each configuration are in the range of 5 to 40 m, and the guideway clearance is in the range of 50 to 100 mm, depending on the details of the rail and vehicle magnet design

Keywords

magnetic levitation; railways; rapid transit systems; stability; superconducting magnets; 500 km/h; alternating-gradient stabilization; attractive levitation; dynamic stability; high-speed ground transport; iron rails; large guideway clearance; levitation; low magnetic drag; superconducting coils; vehicle; Coils; Drag; Feedback; Iron; Magnetic levitation; Medical services; Rails; Stability; Superconducting magnets; Vehicles;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42275

Filename

42275