A new global control scheme for sensorless induction motors

Author

Marino, Riccardo ; Tomei, Patrizio ; Verrelli, Cristiano Maria

Author_Institution

Dip. Ing. Elettronica, Univ. di Roma "Tor Vergata"

Volume

2

fYear

2002

fDate

2002

Firstpage

612

Abstract

The problem of controlling a sensorless induction motor (i.e. without rotor speed measurements) is addressed. Smooth reference signals for rotor speed and rotor flux modulus are required to be tracked globally (i.e. from any initial condition). Only semiglobal solutions have been obtained, in the literature for the full-order model of an induction motor: a global solution is presented here, by extending the global solution obtained by R. Marino et al. (see 15th IFAC World Congress, Barcelona, July 2002) for current-fed motors. A novel rotor speed observer is designed, while online integration of stator flux dynamics is required.

Keywords

angular velocity control; asymptotic stability; induction motors; machine control; magnetic flux; magnetic variables control; observers; rotors; stators; current-fed motors; full-order model; global asymptotic stability; global control scheme; global feedback control; local exponential stability; open loop control; rotor flux modulus; rotor speed; rotor speed observer; semiglobal solutions; sensorless induction motors; smooth reference signals; stator flux dynamics on-line integration;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2002. ISIE 2002. Proceedings of the 2002 IEEE International Symposium on

Print_ISBN

0-7803-7369-3

Type

conf

DOI

10.1109/ISIE.2002.1026361

Filename

1026361