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

fYear

2008

fDate

1-3 Sept. 2008

Firstpage

1105

Lastpage

1110

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);

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/EPEPEMC.2008.4635415

Filename

4635415