Performance of repulsive type magnetic bearing system under nonuniform magnetization of permanent magnet
Authors:
- T. OhjiTOT. Ohji
- S.C. MukhopadhyayS.C. Mukhopadhyay
- M. IwaharaMIM. Iwahara
- S. YamadaSYS. Yamada
- 1 January 2000
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Magnetics
- Vol. 36 (5) , 3696-3698
Abstract
Permanent magnet bearing system utilizes the repulsive forces between the stator and rotor permanent magnets (PM) for the levitation of the system and it results a simplified axial control scheme. A repulsive type magnetic bearing system based on the above principle was fabricated in our laboratory. Material characteristics and the configuration of the permanent magnets are the central component for this type of bearing system. Due to aging or as both the magnets are repelling each other, there will be demagnetization of the permanent magnet, resulting the field distribution along the magnet's periphery nonuniform. In this paper the effect of this magnetization nonuniformity on the performance of the bearing system has been studiedKeywords
This publication has 2 references indexed in Scilit:
- Permanent magnet bearings for horizontal- and vertical-shaft machines: A comparative studyJournal of Applied Physics, 1999
- Design, analysis and control of a newrepulsive-typemagnetic bearing systemIEE Proceedings - Electric Power Applications, 1999