Robustness of global asymptotic stability in indirect field-oriented control of induction motors

Author

Reginatto, R. ; Bazanella, A.S.

Author_Institution

Dept. of Electr. Eng., Univ. Fed. do Rio Grande do Sul, Porto Alegre, Brazil

Volume

48

Issue

7

fYear

2003

fDate

7/1/2003 12:00:00 AM

Firstpage

1218

Lastpage

1222

Abstract

The influence of the rotor time constant mismatch on the global stability of induction motors under indirect field oriented control (IFOC) is analyzed. A test for global stability is provided, based on necessary and sufficient conditions for the existence of quadratic Lyapunov functions for IFOC drives. This test yields robustness margins with respect to rotor time constant mismatches. A typical example is presented to show that the robustness margins obtained are significantly less conservative than the ones obtained with previously proposed stability criteria.

Keywords

Lyapunov methods; asymptotic stability; induction motors; machine control; machine vector control; rotors; global asymptotic stability; indirect field-oriented control; induction motors; quadratic Lyapunov functions; robustness; rotor; rotor time constant; sufficient conditions; Asymptotic stability; Induction motors; Lyapunov method; Robust control; Robust stability; Robustness; Rotors; Stability analysis; Sufficient conditions; Testing;

fLanguage

English

Journal_Title

Automatic Control, IEEE Transactions on

Publisher

ieee

ISSN

0018-9286

Type

jour

DOI

10.1109/TAC.2003.814264

Filename

1211217