Li, Y and Zhu, Z Q and Howe, D and Bingham, Chris and Stone, D (2007) Improved rotor position estimation by signal injection in brushless AC motors, accounting for cross-coupling magnetic saturation. In: Industry Applications Conference, 2007. 42nd IAS Annual Meeting. , 23-27 Sept 2007, New Orleans, USA.
![[img]](http://eprints.lincoln.ac.uk/style/images/fileicons/application_pdf.png)
|
PDF
li_1.pdf - Whole Document Download (1452Kb) |
Abstract
The paper presents an improved signal injection- based sensorless control method for permanent magnet brushless AC (BLAC) motors, accounting for the influence of cross-coupling magnetic saturation between the d- and q-axes. The d- and q-axis incremental self-inductances, the incremental mutual-inductance between the (d-axis and q-axis, and the cross-coupling factor are determined by finite element analysis. A method is also proposed for measuring the cross-coupling factor which can be used directly in the sensorless control scheme. Both measurements and predictions show that a significant improvement in the accuracy of the rotor position estimation can be achieved under both dynamic and steady-state operation, compared with that which is obtained with the conventional signal injection method.
| Item Type: | Conference or Workshop Item (Presentation) |
|---|---|
| Additional Information: | The paper presents an improved signal injection- based sensorless control method for permanent magnet brushless AC (BLAC) motors, accounting for the influence of cross-coupling magnetic saturation between the d- and q-axes. The d- and q-axis incremental self-inductances, the incremental mutual-inductance between the (d-axis and q-axis, and the cross-coupling factor are determined by finite element analysis. A method is also proposed for measuring the cross-coupling factor which can be used directly in the sensorless control scheme. Both measurements and predictions show that a significant improvement in the accuracy of the rotor position estimation can be achieved under both dynamic and steady-state operation, compared with that which is obtained with the conventional signal injection method. |
| Keywords: | Sensorless control, Permanent Magnet AC Motor, Signal Injection |
| Subjects: | H Engineering > H600 Electronic and Electrical Engineering |
| Divisions: | College of Sciences > Faculty of Science > Lincoln School of Engineering |
| Depositing User: | Paul Stewart |
| Date Deposited: | 16 May 2010 15:18 |
| Last Modified: | 13 Mar 2013 08:37 |
| URI: | http://eprints.lincoln.ac.uk/id/eprint/2461 |
Actions (login required)
 |
View Item |