Back to Search
Start Over
Position Sensorless Control of Synchronous Reluctance Machines Based on Magnetic Saturation Depending on Current Phase Angles.
- Source :
-
IEEE Transactions on Industry Applications . May-Jun2020, Vol. 56 Issue 3, p2171-2179. 9p. - Publication Year :
- 2020
-
Abstract
- Position sensorless control of synchronous reluctance machines is not easy due to nonlinear correlations caused by extensive magnetic saturation. This article investigates stability of a conventional saliency-based method and, for the first time, shows that the method becomes unstable at high torque with high magnetic saturation not due to cross-coupling effect itself but due to expansion of the cross-coupling effect through feedback of the estimated position. This instability occurs even when neither disappearance of the saliency nor reversal of the estimated d- and q- axes arises. A novel method to overcome this instability is proposed, which utilizes magnetic saturation depending on current phase angles. The proposed method was verified by simulations and experiment using a prototype machine. The results demonstrated that the proposed method achieved stable sensorless operation at the maximum torque, and thus, surpassed the conventional saliency-based method, the feasible torque of which was limited to 60% of the maximum for the prototype machine. [ABSTRACT FROM AUTHOR]
- Subjects :
- *RELUCTANCE motors
*MAGNETIC torque
*TORQUE control
*SYNCHRONOUS electric motors
Subjects
Details
- Language :
- English
- ISSN :
- 00939994
- Volume :
- 56
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Industry Applications
- Publication Type :
- Academic Journal
- Accession number :
- 142930055
- Full Text :
- https://doi.org/10.1109/TIA.2020.2970828