Basic Characteristics of an Active Thrust Magnetic Bearing With a Cylindrical Rotor Core

Magnetic bearings, which can suspend rotor shafts by electromagnetic force without mechanical contacts and lubrication, have been developed and commercialized. In the various types of magnetic bearings, thrust magnetic bearings with thrust disks are generally used for active suspension control of th...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2008-11, Vol.44 (11), p.4167-4170
Main Authors: Hijikata, K., Kobayashi, S., Takemoto, M., Tanaka, Y., Chiba, A., Fukao, T.
Format: Article
Language:English
Subjects:
Active suspension control
Assembly systems
Commercialization
Cross-disciplinary physics: materials science
rheology
Electromagnetic forces
Exact sciences and technology
Joining processes
Lubrication
magnetic bearings (MBs)
Magnetic cores
Magnetic levitation
magnetic suspension
Magnetism
Materials science
Mechanical systems
Other topics in materials science
Physics
Shafts
Stator cores
thrust magnetic bearings (TMBs)
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Summary:Magnetic bearings, which can suspend rotor shafts by electromagnetic force without mechanical contacts and lubrication, have been developed and commercialized. In the various types of magnetic bearings, thrust magnetic bearings with thrust disks are generally used for active suspension control of thrust direction. However, the large thrust disks of the thrust magnetic bearings have caused various problems. Therefore, this paper proposes a novel structure of an active thrust magnetic bearing using a cylindrical rotor core without the large thrust disk, and it is shown with 3-D-FEA and experiment that the proposed thrust magnetic bearing with the cylindrical rotor core is effective in producing thrust force.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2008.2002628