Title :
Reduction of cogging forces in linear synchronous motors
Author :
Cruise, R.J. ; Landy, C.F.
Author_Institution :
Dept. of Electr. Eng., Univ. of the Witwatersrand, Johannesburg, South Africa
fDate :
6/21/1905 12:00:00 AM
Abstract :
Cogging forces in linear synchronous motors are due to the interaction between the edges of the permanent magnet and the teeth of the primary core. Various techniques can be employed to reduce the cogging force, namely, the optimisation of the magnet length, the use of semi-closed slots, the variation of the air-gap length and skewing. Finite element methods (FEM) are used to assess the various different schemes
Keywords :
air gaps; finite element analysis; linear synchronous motors; machine theory; machine windings; permanent magnet motors; FEM; LSM; air-gap length; cogging forces reduction; finite element methods; linear synchronous motors; magnet length optimisation; permanent magnet edges; primary core teeth; semi-closed slots; skewing; Africa; Air gaps; Force measurement; Forging; Magnetic cores; Propulsion; Stator cores; Steel; Synchronous motors; Teeth;
Conference_Titel :
Africon, 1999 IEEE
Conference_Location :
Cape Town
Print_ISBN :
0-7803-5546-6
DOI :
10.1109/AFRCON.1999.821834
