Adaptive estimation of rotor time constant for indirect field-oriented induction motor drive

Author

Shieh, H.-J. ; Shyu, K.-K. ; Lin, F.-J.

Author_Institution

Dept. of Electr. Eng., Nat. Central Univ., Chung-Li, Taiwan

Volume

145

Issue

2

fYear

1998

fDate

3/1/1998 12:00:00 AM

Firstpage

111

Lastpage

118

Abstract

A novel estimation model based adaptive control for indirect field-oriented induction motor drive is presented. A new coordinate reference frame is utilised to describe the dynamical model of an induction motor. Then, the new reference frame based estimator is proposed to adaptively estimate the redefined state variables and the rotor time constant, necessarily used in indirect field-oriented control. Moreover, a modified estimation model also based on the same reference frame is further presented to simplify the estimation and adaptation computation. By utilisation of the estimation approach, robust indirect-field-oriented control with respect to rotor time constant variation due to the effect of thermal changes is obtained. Finally, simulation and experimental results demonstrate the validity of the approach for practical applications

Keywords

control system analysis; control system synthesis; induction motor drives; machine control; machine testing; machine theory; model reference adaptive control systems; parameter estimation; robust control; rotors; adaptive rotor time constant estimation; coordinate reference frame; dynamical model; induction motor drive; model based adaptive control; modified estimation model; redefined state variables; robust indirect field-oriented control; thermal changes;

fLanguage

English

Journal_Title

Electric Power Applications, IEE Proceedings -

Publisher

iet

ISSN

1350-2352

Type

jour

DOI

10.1049/ip-epa:19981534

Filename

674845