永久磁石吸引型パッシブ磁気軸受を用いたアキシャルセルフベアリングモータ

抄録

This paper introduces an axial gap self-bearing motor (ASBM) with two permanent magnet attractive type passive magnetic bearings (PMBs). The axial gap self-bearing motor controls the axial position of the rotor and produces motor torque. The PMBs support the radial posture by using the attractive force between the rotor shaft and stator PM. In this structure, there are no additional parts for the PMB to the rotor shaft, then the structure becomes quite simple. This paper describes the structure of the proposed motor, then introduces an experimental device. Levitation and rotation tests were conducted, and stable levitation and non-contact rotation at 300 rpm were succeeded.