Title:Experimental Characterization of a Bearingless Rotating Field Axial-Force/Torque MotorAuthor(s):Walter Bauer, Paul Freudenthaler, Wolfgang AmrheinAbstract:The Bearingless Axial-Force/Torque Motor is an air-core coil motor, that can generate axial forces and drive torques concurrently using a common stator winding system. The radial suspension and the tilting stabilization of the bearingless drive is realized by passive repulsive permanent magnetic ring bearings. The end-windings of the concentric, non-overlapping stator coils create axial directed levitation forces, provided that a non-vanishing common-mode current component is present. In contrast to the existing alternating field motor topology, the proposed redesign features a rotating field motor structure for constant, rotor-angle independent drive torque generation. The current investigation concentrates on the verification of the drive parameters via simple and robust measurements. A presentation of the functional prototype concludes the article.Booktitle:ISMB14, 14th International Symposium on Magnetic Bearings, Linz, AustriaPage Reference:page 132-138, 7 page(s)Publishing:8/2014