Concept of a Novel Bearingless Three-Pole Motor for Two-Sided Driven Applications

This paper presents a novel bearingless three-pole motor for two-sided driven applications, i. e., two motors levitating and rotating a common rotor without any mechanical contact. When operating in chemically demanding environments its advantages are highly promising: the bearingless technology allows friction- and wear-free motion, unlimited lifetime and a hermetically sealed encapsulation of the rotor, while the novel motor convinces with its - in terms of hardware - minimalistic, compact and safe design. Using 3D FEM simulations, the new topology is evaluated focusing on maximal torque and sufficient bearing forces while satisfying the compactness requirements.