Scaling and design of miniature high-speed bearingless slice motors

Schuck, Marcel; Puentener, Pascal; Holenstein, Thomas; Kolar, Johann W.

doi:10.1007/s00502-019-0718-8

Cited by 2 publications

(1 citation statement)

References 30 publications

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“…The underlying design trade-offs are similar to those of bearingless slice motors in general. A detailed outline is provided, e.g., in [30]. Exemplarily, the trade-offs considered in step 1b) are described here: The achievable torque is maximized for h R = h S,TH and high absolute values for both variables.…”

Section: Electromagnetic Designmentioning

confidence: 99%

A Wide Air Gap Flux Switching Bearingless Motor With Odd and Even Pole Pair Numbers

Holenstein¹,

Schuck

Kolar

2020

IEEE Open J. Ind. Applicat.

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This paper introduces a bearingless motor topology with a magnet-free rotor that provides a higher rotor torque density and wider magnetic air gap compared to previously published topologies. The stray flux is minimized by using a stator with only eight teeth in temple configuration that contain permanent magnets. The motor performance is analyzed based on experimental prototypes, that were designed using 3D FEM simulations, for even and odd rotor pole pair numbers of six and nine, respectively. Control schemes that compensate parasitic radial forces to achieve stable magnetic levitation of the rotors are presented. The implemented prototypes reached a rotational speed of 2000 rpm and a maximum torque of 8 Nm.INDEX TERMS Flux switching, high torque, magnetic levitation, reluctance rotor, temple motor, wide air gap machine.

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Section: Electromagnetic Designmentioning

confidence: 99%