Gain Scheduling of a Full-Order Observer for Sensorless Induction Motor Drives

Author

Zengcai Qu ; Hinkkanen, Marko ; Harnefors, Lennart

Author_Institution

Dept. of Electr. Eng., Aalto Univ., Espoo, Finland

Volume

50

Issue

6

fYear

2014

fDate

Nov.-Dec. 2014

Firstpage

3834

Lastpage

3845

Abstract

This paper deals with the design of a speed-adaptive full-order observer for sensorless induction motor (IM) drives. A general stabilizing observer gain matrix, having three free design parameters, is used as a design framework. A gain-scheduled selection of the free design parameters is proposed. Furthermore, the full-order observer is augmented with the stator-resistance adaptation, and the local stability of the augmented observer is analyzed. The performance of the proposed full-order observer design is experimentally compared with a reduced-order observer using a 2.2-kW IM drive.

Keywords

induction motor drives; observers; reduced order systems; scheduling; sensorless machine control; stability; velocity control; IM drives; gain scheduling; gain-scheduled selection; observer gain matrix; power 2.2 kW; reduced-order observer; sensorless induction motor drives; speed-adaptive full-order observer; stator-resistance adaptation; Eigenvalues and eigenfunctions; Observers; Resistance; Rotors; Stability analysis; Stators; Tuning; Flux estimation; full-order observer; induction motor (IM); resistance adaptation; sensorless; stability;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2014.2323482

Filename

6815739