Static and dynamic force characteristics of paramagnetic shields in linear synchronous motors

Author

Jeans, Carl G. ; Cruise, Rupert J. ; Landy, Charles F.

Author_Institution

Dept. of Electr. Eng., Univ. of the Witwatersrand, Johannesburg, South Africa

Volume

2

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

631

Abstract

A small-scale prototype of a linear synchronous motor has been designed, built and tested. Present studies include the investigation of the shielding properties of a paramagnetic material as well as its use as a stabiliser during asynchronous operation. It has been found through finite element methods that a 3 mm copper shield provides the greatest static inductive force. Aluminium has been used however, as it is a more economically viable material than copper. Dynamic tests have shown that a paramagnetic shield provides a damping action during transients

Keywords

eddy currents; electromagnetic forces; electromagnetic shielding; finite element analysis; linear synchronous motors; machine theory; asynchronous operation; dynamic force characteristics; dynamic tests; finite element methods; linear synchronous motors; paramagnetic shields; shielding properties; stabiliser; static force characteristics; static inductive force; transient damping action; Africa; Aluminum; Copper; Eddy currents; Finite element methods; Induction motors; Paramagnetic materials; Prototypes; Synchronous motors; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Africon, 1999 IEEE

Conference_Location

Cape Town

Print_ISBN

0-7803-5546-6

Type

conf

DOI

10.1109/AFRCON.1999.821836

Filename

821836