Abstract
The stator vibrations of a bearingless synchronous reluctance motor are investigated with simulations. The influence of the Maxwell stress tensor and magnetostriction on the stator vibrations is studied at different operational conditions. An energy-based magnetomechanical model of iron core is implemented and the influence of the magnetostriction in the iron core on the stator vibrations is further investigated and compared with the case where the magnetostriction is not modeled. The objective of the research is to find out how the stator vibrations can be used to detect the off-center rotor position. The results show that a single frequency component is not able to assess this phenomenon but a combination of two components makes it possible.
| Original language | English |
|---|---|
| Article number | 8101804 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 55 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2019 |
| MoE publication type | A1 Journal article-refereed |
Funding
ACKNOWLEDGMENT This work was supported in part by Estonian Research Council under Grant PUT1260 and in part by the Academy of Finland. The authors would like to thank Dr. S. Saarakkala and Dr. K. Tammi for their guidance in the prototype setup and measurement.
Keywords
- Bearingless machine
- eccentricity
- magnetostriction
- Maxwell stress
- mechanical vibrations
- synchronous reluctance motor