Modeling of a repulsive type magnetic bearing for five axis control under intermittent operation including eddy current effect

Author

Mukhopadhyay, S.C.

Author_Institution

Inst. of Inf. Sci. & Technol., Massey Univ., Palmerston North, New Zealand

fYear

2002

fDate

2002

Firstpage

425

Lastpage

427

Abstract

A repulsive type magnetic bearing system has been designed and fabricated employing the repulsive forces operating between the stator and rotor permanent magnets. The radial axis is an uncontrolled passive one. The vibration along the uncontrolled axis and the increase of control current due to eddy current interference has limited the performance at higher speed of operation. This paper discusses different options to improve the performance at higher speed of operation and a method for reduction of the eddy current effect

Keywords

eddy currents; electromagnets; machine bearings; magnetic bearings; permanent magnets; vibration control; axis vibration control; control current; controlled electromagnets; eddy current effect; five axis control; horizontal-shaft machines; intermittent operation; operation speed; repulsive type magnetic bearing; rotor permanent magnets; stator permanent magnets; uncontrolled passive radial axis; Control systems; Displacement control; Eddy currents; Electromagnets; Energy storage; Interference; Magnetic levitation; Permanent magnets; Stators; Vibration control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Design, Test and Applications, 2002. Proceedings. The First IEEE International Workshop on

Conference_Location

Christchurch

Print_ISBN

0-7695-1453-7

Type

conf

DOI

10.1109/DELTA.2002.994663

Filename

994663