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Effects of Permanent-Magnet Passive Magnetic Bearing on a Two-Axis Actively Regulated Low-Speed Bearingless Motor

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6 Author(s)
Asama, J. ; Dept. of Mech. Eng., Shizuoka Univ., Shizuoka, Japan ; Asami, T. ; Imakawa, T. ; Chiba, A.
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Performance comparisons in a bearingless motor with and without passive magnetic bearings (PMBs) are presented. The bearingless motor is actively controlled in two perpendicular-axes. The axial and conical movements are supported by PMBs. The experimental results are compared to the calculated ones by 3-D finite-element method. Effectiveness of PMBs is analytically and experimentally investigated in both static and dynamic tests. It is found that a rotational test is successful only with the PMBs.

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Energy Conversion, IEEE Transactions on  (Volume:26 ,  Issue: 1 )