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This paper investigates the radial suspension force of a bearingless permanent magnet motor with concentrated winding and discusses the generalization. The spatial harmonics are included in the magneto-motive force distribution, when the concentrated winding is used. This spatial harmonics as well as the revolving direction may have significant influence on the suspension force generation. The radial...
In this paper, a seven-phase inset-type permanent magnetic bearingless motor is proposed with characters as the treble frequency suspension force compensation and elimination of the affection of the third plane to the suspension plane. The winding configuration and harmonic distribution are presented. Then, the analysis formulations of inductance and suspension force of the proposed motor are presented...
Today magnetically levitated rotors are mainly used in applications where wearless operation and high life cycle are of importance (e.g. in the pharmaceutical, biomedical, chemical and semiconductor industry). The bearingless slice motor features a very compact design because three degrees of freedom (one translational and two rotatory) are passively stabilized by reluctance forces. Therefore, only...
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