Title :
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
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;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2009.2025276