Gain scheduling of a full-order observer for sensorless induction motor drives

Author

Zengcai Qu ; Hinkkanen, Marko ; Harnefors, Lennart

Author_Institution

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

fYear

2013

fDate

17-19 Oct. 2013

Firstpage

1

Lastpage

8

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 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

adaptive control; angular velocity control; induction motor drives; matrix algebra; observers; reduced order systems; scheduling; sensorless machine control; stability; stators; IM drives; augmented observer local stability; free design parameters; gain scheduling; general stabilizing observer gain matrix; power 2.2 kW; reduced-order observer; sensorless induction motor drives; speed-adaptive full-order observer design; stator-resistance adaptation; Eigenvalues and eigenfunctions; Observers; Resistance; Rotors; Stability analysis; Stators; Tuning; Flux estimation; full-order observer; induction motor; resistance adaptation; sensorless; stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensorless Control for Electrical Drives and Predictive Control of Electrical Drives and Power Electronics (SLED/PRECEDE), 2013 IEEE International Symposium on

Conference_Location

Munich

Print_ISBN

978-1-4799-0680-2

Type

conf

DOI

10.1109/SLED-PRECEDE.2013.6684506

Filename

6684506