Title :
Sensorless Sliding Mode Observer based on rotor position error for salient-pole PMSM
Author :
Ilioudis, V.C. ; Margaris, N.I.
Author_Institution :
Dept. of Electr. & Comput. Eng., Aristotle Univ. of Thessaloniki, Thessaloniki, Greece
Abstract :
This paper introduces a new simple sensorless algorithm of estimating the permanent magnet synchronous motor (PMSM) speed and position. The proposed estimation method is implemented using a stator flux/current and a modified back electromotive force (EMF) observer connected in cascade. The flux/current observer based on sliding mode techniques ensures stator currents convergence while the modified back EMF observer provides accurate rotor position estimation at a wide range of motor speeds. An adaptive stator resistance observer is embedded in the flux/current sliding mode observer (SMO) and improves the overall observation system convergence. Simulation results show good properties of the proposed estimation approach.
Keywords :
adaptive control; electric potential; machine control; observers; permanent magnet motors; position control; rotors; synchronous motors; variable structure systems; velocity control; adaptive stator resistance observer; electromotive force; motor speed; permanent magnet synchronous motor; rotor position error; salient-pole PMSM; sensorless sliding mode observer; Magnetic flux; Magnetic sensors; Permanent magnet motors; Rotors; Sensorless control; Sliding mode control; Stators; Synchronous motors; Torque; Voltage; Modified Back EMF; Permanent Magnet Synchronous Motor (PMSM); Sensorless Control; Sliding Mode Observer (SMO); Speed and Position Estimation;
Conference_Titel :
Control and Automation, 2009. MED '09. 17th Mediterranean Conference on
Conference_Location :
Thessaloniki
Print_ISBN :
978-1-4244-4684-1
Electronic_ISBN :
978-1-4244-4685-8
DOI :
10.1109/MED.2009.5164762
