Full-scale testing of a high speed linear synchronous motor and calculation of end-effects

Author

Eastham, J.F. ; Balchin, M.J. ; Coles, P.C.

Author_Institution

Sch. of Electr. Eng., Bath Univ., Avon, UK

Volume

24

Issue

6

fYear

1988

fDate

11/1/1988 12:00:00 AM

Firstpage

2892

Lastpage

2894

Abstract

A description is given of apparatus constructed to perform full-scale tests on linear synchronous motor (LSM) designs suitable for 100-passenger vehicles, traveling at speeds up to 400 km/hr. Test results are presented that illustrate the terminal characteristics of the machine, which are shown to be predictable using a simple mathematical model. In all forms of linear machine the air-gap flux takes time to develop at the entry end of the stator and a further time to decay at the exit end. This effect, which is due to induced secondary currents, is known as the longitudinal end effect. A simple method is described for predicting the effect, and the results are confirmed by measurements on a full-scale test rig

Keywords

electric vehicles; linear motors; machine theory; synchronous motors; 100-passenger vehicles; 400 kph; air-gap flux; calculation of end-effects; full-scale test rig; full-scale tests; high speed linear synchronous motor; induced secondary currents; longitudinal end effect; mathematical model; measurements; terminal characteristics; Air gaps; Induction motors; Mathematical model; Performance evaluation; Propulsion; Rotors; Stators; Synchronous motors; Testing; Vehicles;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92279

Filename

92279