A new stable MRAS-based speed and stator resistance estimators for sensorless vector control induction motor drive at low speeds

Author

Rashed, Mohamed ; Stronach, Fraser ; Vas, Peter

Author_Institution

Dept. of Eng., Univ. of Aberdeen, UK

Volume

2

fYear

2003

fDate

12-16 Oct. 2003

Firstpage

1181

Abstract

MRAS-based sensorless vector control induction motor schemes discussed in the literature suffer from pure integration problems, instability problems and sensitivity to stator resistance mismatch at low speed operation. In this paper, novel stable MRAS speed and stator resistance estimators based on current estimation have been proposed and designed. These estimators have been designed to be stable in the various operating modes, for individual and simultaneous use, following a design procedure based on linear control theory. Simulations and experimental investigations have been performed to show the stability of the proposed estimators.

Keywords

electric resistance; induction motor drives; machine vector control; model reference adaptive control systems; parameter estimation; stators; MRAS-based speed estimation; current estimation; induction motor drive; instability problems; linear control; low speed operation; pure integration problems; sensitivity; sensorless vector control; stator resistance estimators; stator resistance mismatch; Educational institutions; Error correction; Frequency estimation; Induction motor drives; Induction motors; Machine vector control; Rotors; Stability; Stators; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the

Print_ISBN

0-7803-7883-0

Type

conf

DOI

10.1109/IAS.2003.1257700

Filename

1257700