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We propose a new structure for a permanent-magnet-biased axial hybrid magnetic bearing. Starting with the inner air gap and the outer air gap of conventional axial magnetic bearings, we first construct a novel air gap between the permanent magnet and the outer housing, which we call the second air gap, separating the bias flux paths from the control flux(More)
In this paper, we propose a novel structure of permanent-magnet-biased axial hybrid magnetic bearing. It has four segments of poles to control three degrees of freedom (3-DOF). Based on the inner and outer air gaps in conventional axial magnetic bearings, a novel air gap, called the subsidiary air gap, is constructed between the permanent magnet and the(More)
The performance of magnetic bearing is determined the characteristics of magnetic materials, which is affected on the configuration of stator core stacks because of different stress under manufacturing process. The experimental results are shown that stator core stacks with reeling condition will lead to large current ripple in magnetic bearing's coils, and(More)
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