Sensorless Control of Surface-Mount Permanent-Magnet Synchronous Motors Based on a Nonlinear Observer

Author

Lee, Junggi ; Hong, Jinseok ; Nam, Kwanghee ; Ortega, Romeo ; Praly, Laurent ; Astolfi, Alessandro

Author_Institution

Dept. of Electr. Eng., Pohang Univ. of Sci. & Technol. (POSTECH) Univ., Pohang, South Korea

Volume

25

Issue

2

fYear

2010

Firstpage

290

Lastpage

297

Abstract

A nonlinear observer for surface-mount permanent-magnet synchronous motors (SPMSMs) was recently proposed by Ortega et al.(LSS, Gif-sur-Yvette Cedex, France, LSS Internal Rep., Jan. 2009). The nonlinear observer generates the position estimate ???? via the estimates of sin ?? and cos ??. In contrast to Luenberger-type observers, it does not require speed information, thus eliminating the complexity associated with speed estimation errors. Further, it is simple to implement. In this study, the nonlinear observer performance is verified experimentally. To obtain speed estimates from the position information, a proportional-integral (PI) tracking controller speed estimator was utilized. The results are good with and without loads, above 10 r/min.

Keywords

PI control; angular velocity control; nonlinear control systems; observers; permanent magnet motors; sensorless machine control; synchronous motors; Luenberger-type observers; nonlinear observer; position estimate; proportional-integral tracking controller; sensorless control; speed estimation errors; surface-mount permanent-magnet synchronous motors; Motor drives; nonlinear estimation; observers; permanent magnet machines; permanent magnet motors;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2009.2025276

Filename

5200471