A novel design of a thrust magnetic bearing with a cylindrical-shaped rotor

A thrust magnetic bearing having a conventional thrust magnetic disk is usually installed in five-degree-of-freedom controlled bearingless drive systems. The thrust disk has a larger diameter than a rotor diameter of the bearingless motor. Therefore, a geometrical shape of the rotating part becomes...

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Bibliographic Details
Published in2009 IEEE Power & Energy Society General Meeting pp. 1 - 4
Main Authors Asama, J., Miyamoto, N., Enomoto, T., Amada, M., Chiba, A., Fukao, T.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2009
Subjects
Assembly
Bearingless motor
Control systems
coreless actuator
Drives
Finite element methods
magnetic bearing
Magnetic levitation
Permanent magnets
Rotors
Shafts
Shape
Stator cores
thrust magnetic bearing
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Summary:A thrust magnetic bearing having a conventional thrust magnetic disk is usually installed in five-degree-of-freedom controlled bearingless drive systems. The thrust disk has a larger diameter than a rotor diameter of the bearingless motor. Therefore, a geometrical shape of the rotating part becomes convex. The convex-shaped rotating shaft causes complicated assembly and disassembly processes and increases its peripheral velocity, which results in a limitation of a maximum rotational speed. In this paper, a thrust magnetic bearing having a cylindrical-shaped rotor has been proposed and designed by using finite element method. The simulated results have shown that the proposed thrust magnetic bearing employing a permanent magnet rotor and a coreless coil stator has a sufficient thrust force.
ISBN:9781424442416
1424442419
ISSN:1932-5517
DOI:10.1109/PES.2009.5275642