Back to Search
Start Over
Influence of rotor geometry of an IPM motor on sensorless control feasibility
- Source :
- IEEE Transactions on Industry Applications. Jan-Feb, 2007, Vol. 43 Issue 1, p87, 10 p.
- Publication Year :
- 2007
-
Abstract
- The sensorless control technique based on the superimposition of a high-frequency stator voltage is commonly used to detect the rotor position of a synchronous interior-permanentmagnet (IPM) motor. This technique is effective at zero and low motor speed, where back electromotive force is null or extremely low. Then, the accuracy of the rotor-position detection depends strictly on the rotor saliency, that is, on the geometry of the IPM rotor. This paper aims to determine some IPM rotor-design criteria so as to improve the sensorless rotor-position detection. Since the design has to be effective in different operating conditions, both saturation and cross-coupling effects have to be taken into account. It is found that the effectiveness of the sensorless rotorposition detection can be improved by means of a proper design of the IPM motor geometry even under heavy operating conditions. Index Terms--High-frequency signal injection, interior permanent-magnet (IPM) motor, low-speed sensorless control, motor design optimization, zero-speed sensorless control.
Details
- Language :
- English
- ISSN :
- 00939994
- Volume :
- 43
- Issue :
- 1
- Database :
- Gale General OneFile
- Journal :
- IEEE Transactions on Industry Applications
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.159391183