Title :
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
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;
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
DOI :
10.1109/EPE.2007.4417536
