Title :
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
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;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2012.2226853
