Investigation of Exterior Rotor Bearingless Motor Topologies for High-Quality Mixing Applications

Author

Reichert, T. ; Nussbaumer, T. ; Kolar, Johann Walter

Author_Institution

Power Electron. Syst. Lab., ETH Zurich, Zurich, Switzerland

Volume

48

Issue

6

fYear

2012

Firstpage

2206

Lastpage

2216

Abstract

The selection of a suitable topology is a crucial part of the design process of a machine. In particular, the slot/pole combination of a bearingless motor has a strong influence on the levitation and drive characteristics. In this paper, several feasible slot/pole combinations for a bearingless motor in exterior rotor construction are investigated, and the important characteristics of each possible topology are discussed in detail. In the end, a comparison between the presented topologies is undertaken, and the optimal motor topology is designed and implemented in a prototype setup.

Keywords

mixing; motor drives; rotors; design process; drive characteristics; exterior rotor bearingless motor topologies; exterior rotor construction; high-quality mixing applications; levitation characteristics; optimal motor topology; prototype setup; slot-pole combination; Brushless motors; Coils; Permanent magnet motors; Rotors; Stators; Torque control; Windings; Bearingless motor; brushless motor; concentrated windings; high torque; permanent magnet;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2012.2226853

Filename

6341826