The speed-sensorless control of induction motors at zero frequency

Author

Huangang, Wang ; Xiaoping, Zhang ; Wenli, Xu ; Geng, Yang

Author_Institution

Dept. of Autom., Tsinghua Univ., Beijing, China

Volume

2

fYear

2001

fDate

37104

Firstpage

1195

Abstract

For most speed sensorless controlled induction motors, even those based on state observers, unstable phenomena occur at very low or zero frequency. In this paper, the potential unstable reason of adaptive rotor flux observer based speed sensorless control is examined and the nonlinear observability of induction motor is analyzed. The limitations of any speed estimation scheme based on observers and effective techniques for sensorless induction motor control at zero frequency are also discussed

Keywords

control system analysis; control system synthesis; induction motors; machine theory; machine vector control; observability; observers; parameter estimation; rotors; velocity control; adaptive rotor flux observer; control design; control simulation; induction motors; nonlinear observability; speed estimation scheme; unstable phenomena; zero frequency speed-sensorless control; Frequency estimation; Inductance; Induction motors; Observability; Observers; Rotors; Sensorless control; Signal analysis; Stability analysis; Stators;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on

Conference_Location

Shenyang

Print_ISBN

7-5062-5115-9

Type

conf

DOI

10.1109/ICEMS.2001.971895

Filename

971895