Extended EMF- and parameter observer for sensorless controlled PMSM-machines at low speed

Author

Schrödl, Manfred ; Hofer, Matthias ; Staffler, Wolfgang

Author_Institution

Vienna Univ. of Technol., Vienna

fYear

2007

fDate

2-5 Sept. 2007

Firstpage

1

Lastpage

8

Abstract

The paper describes an extended EMF- and parameter observer for sensorless controlled PMSM-machines. Therefore a combination of INFORM-method and EMF-model is used. At low speed, the reference position of the permanent magnet flux is calculated by INFORM-method and compared with the permanent magnet flux provided by EMF-model. By transformation of the voltage equation into a current-oriented reference frame, a 4th order state model is presented which provides the observed stator resistance and stator inductance of the PMSM. A stability analysis results in a stable operation. Measurement results of the extended EMF-and parameter observer at stationary operation point and in dynamical operation are given.

Keywords

machine control; observers; permanent magnet machines; stability; stators; synchronous machines; 4th order state model; EMF-model; INFORM-method; current-oriented reference frame; dynamical operation; extended EMF-observer; observed stator resistance; parameter observer; parameter tracking; permanent magnet flux; permanent magnet sychronous machines; reference position; sensorless controlled PMSM-machines; stability analysis; stationary operation point; stator inductance; voltage equation; Electronic mail; Equations; Inductance; Paper technology; Parameter estimation; Permanent magnets; Sensorless control; Stators; Uniform resource locators; Voltage; INFORM method; Permanet Magnet Synchronous Machines; Sensorless Control; back EMF model; observer; parameter tracking;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications, 2007 European Conference on

Conference_Location

Aalborg

Print_ISBN

978-92-75815-10-8

Electronic_ISBN

978-92-75815-10-8

Type

conf

DOI

10.1109/EPE.2007.4417536

Filename

4417536