Online identification of the rotor time constant of an induction machine

Author

Oteafy, Ahmed ; Chiasson, John ; Bodson, Marc

Author_Institution

ECE Dept., Boise State Univ., Boise, ID, USA

fYear

2009

fDate

10-12 June 2009

Firstpage

4373

Lastpage

4378

Abstract

Indirect field oriented control of an induction machine requires knowledge of the rotor time constant to estimate the rotor flux linkages. An online method is described for estimating the rotor time constant and the stator resistance both of which vary during operation of the machine due to ohmic heating. The method formulates the problem using a nonlinear least-squares criterion and is guaranteed to find the minimizing solution (parameter values) in a finite number of steps. In this work the algorithm has been implemented online in simulation with the results demonstrating its application and efficacy.

Keywords

asynchronous machines; identification; least squares approximations; machine control; rotors; indirect field oriented control; induction machine; nonlinear least-squares criterion; ohmic heating; online identification; rotor flux linkages; rotor time constant; Couplings; Induction machines; Induction motors; Parameter estimation; Polynomials; Resistance heating; Rotors; Stators; Testing; USA Councils; Induction Motor; Parameter Identification; Rotor Time Constant;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2009. ACC '09.

Conference_Location

St. Louis, MO

ISSN

0743-1619

Print_ISBN

978-1-4244-4523-3

Electronic_ISBN

0743-1619

Type

conf

DOI

10.1109/ACC.2009.5160210

Filename

5160210