Title :
PMSM sliding mode observer for speed and position estimation using modified back EMF
Author :
Vasilios, C.I. ; Nikolaos, I.M.
Author_Institution :
Dept. of ECE, Aristotle Univ. of Thessaloniki, Thessaloniki
Abstract :
This paper introduces a novel sensorless method for speed and position estimation of permanent magnet synchronous motor (PMSM). The mathematical model of PMSM is expressed in an arbitrary rotating reference frame and no knowledge of initial rotor position is needed. The developed algorithm is based on sliding mode observer (SMO) theory and consists of two discrete steps: flux/current and speed/position estimation. Also, Lyapunov functions are suitably chosen for determining the adaptive laws for the stator resistance and the speed estimators. First stator flux/current and resistance error converges to zero and afterwards speed and position estimation is carried out using a modified back electromotive force (EMF) observer. Simulation results show the effectiveness of the proposed estimation method.
Keywords :
estimation theory; permanent magnet motors; synchronous motors; PMSM; modified back EMF; permanent magnet synchronous motor; position estimation; sliding mode observer; speed estimation; Inductance; Magnetic flux; Mathematical model; Permanent magnet motors; Rotors; Sensorless control; Sliding mode control; Stators; Torque; Voltage; permanent magnet synchronous motor (PMSM); sensorless control; sensorless speed and position estimation; sliding mode observer (SMO);
Conference_Titel :
Power Electronics and Motion Control Conference, 2008. EPE-PEMC 2008. 13th
Conference_Location :
Poznan
Print_ISBN :
978-1-4244-1741-4
Electronic_ISBN :
978-1-4244-1742-1
DOI :
10.1109/EPEPEMC.2008.4635415
