| Autor(en): |
Siegfried Silber, Gernot Trauner, Wolfgang Amrhein und Klaus Nenninger |
| Journal: |
6th International Symposium on Magnetic Suspension Technology, 6th ISMST, Turin, Italy |
| Jahr: |
2001 |
| Monat: |
Oktober |
| Zusammenfassung: |
In this paper a novel design of a cost effective and high performance permanent magnet bearingless motor is presented. The low cost mechanical design of the motor can be obtained through a symmetrical arrangement of five concentrated coils. Owing to this mechanical design cogging torque becomes very low. Furthermore, bearingless operation can even be guaranteed when the coils are star-connected, thus a simple power converter featuring five half bridges may be employed. Another major advantage of the proposed motor design is that it offers improved fault tolerant operation. In the case of a single failure (coil failure or failure of one power amplifier channel) bearingless operation may still be guaranteed even without the need of changing the control algorithm. |
