A new linear synchronous motor for mag-lev train with integrated lift and thrust using a trapezoidal rail

Author

Al-Kasimi, S.M.

Author_Institution

Umm-Ul-Qura Univ.

fYear

1992

fDate

10-13 May 1992

Firstpage

209

Abstract

An improvement to the ZigZag Linear Homopolar Synchronous Motor (ZZLHSM) providing a combined lift and thrust for maglev vehicles is described. The magnet of ZZLHSM is U-shaped and acts as a two-pole synchronous machine in which each pole is surrounded by a DC coil from a controlled DC power supply. Each pole is made up of two subpoles surrounded by an AC coil feeding from an inverter such that the field could be distorted among the four subpoles. The rail of the ZZLHMS is zigzag shaped and will move relative to the subpoles to minimize reluctance, hence propulsion is obtained. The improvement to the ZZLHSM described is in the trapezoidal shape of the rail. The performance of the Trapezoidally Railed Linear Homopolar Synchronous Motor (TRLHSM) was compared to that of the ZZLHSM with same winding and excitation conditions

Keywords

linear motors; magnetic levitation; railways; synchronous motors; AC coil; DC coil; Trapezoidally Railed Linear Homopolar Synchronous Motor; ZigZag Linear Homopolar Synchronous Motor; controlled DC power supply; excitation conditions; inverter; lift; linear synchronous motor; maglev train; maglev vehicles; magnet; propulsion; reluctance; subpoles; thrust; trapezoidal rail; two-pole synchronous machine; winding conditions; Coils; Inverters; Magnetic levitation; Power supplies; Propulsion; Rails; Shape; Synchronous machines; Synchronous motors; Vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1992, IEEE 42nd

Conference_Location

Denver, CO

ISSN

1090-3038

Print_ISBN

0-7803-0673-2

Type

conf

DOI

10.1109/VETEC.1992.245439

Filename

245439