High speed sensorless fuzzy-like Luenberger observer

Author

Abrate, M. ; Griva, G. ; Profumo, F. ; Tenconi, A.

Author_Institution

Dipt. di Ingegneria Elettrica, Politecnico di Torino, Italy

Volume

1

fYear

1999

fDate

36373

Firstpage

477

Abstract

This paper presents a new method based on the Luenberger observer to estimate the flux and the speed of an induction motor. The method uses different values of the discrete observer matrix computed offline at different speeds in order to keep the poles inside the stability region. As the motor speed changes, the proper observer matrix is selected by the control system: in this way, the dynamic response and the stability of the observer are guaranteed at high speed as well as at low speed. The performance of a 4-pole induction motor drive, using the proposed observer, has been tested. Experimental results are shown up to 12,000 RPM

Keywords

control system analysis; dynamic response; fuzzy control; induction motor drives; machine theory; machine vector control; observers; parameter estimation; poles and zeros; stability; velocity control; discrete observer matrix; dynamic response; flux estimation; high-speed sensorless fuzzy-like Luenberger observer; induction motor; offline computation; poles; speed estimation; stability region; Amplitude estimation; Continuous time systems; Eigenvalues and eigenfunctions; Equations; Induction motor drives; Induction motors; Stability; State estimation; Stators; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE

Conference_Location

Charleston, SC

ISSN

0275-9306

Print_ISBN

0-7803-5421-4

Type

conf

DOI

10.1109/PESC.1999.789049

Filename

789049