An analysis of bearingless AC motors |
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| Authors: | Chiba A Deido T Fukao T Rahman MA |
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| Affiliation: | Dept. of Electr. Eng., Tokyo Sci. Univ., Chiba ; |
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| Abstract: | Several types of AC bearingless motors are proposed. These bearingless motors have conventional four-pole stator windings and additional two-pole windings, whose currents produce radial forces acting on the rotor. General expressions of the machine inductances and radial forces are derived for the cylindrical rotor and salient-pole motors. No-load characteristics of laboratory squirrel-cage induction and reluctance-type synchronous bearingless motors are provided. The test motors were successfully driven by the control circuits |
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