Stability improvement of speed sensorless induction motor vector control system using q-axis flux with stator resistance identification

Author

Tsuji, Mineo ; Chen, Shuo ; Izumi, Katsuhiro ; Yamada, Eiji

Author_Institution

Fac. of Eng., Nagasaki Univ., Japan

Volume

2

fYear

1998

fDate

17-22 May 1998

Firstpage

1587

Abstract

We have proposed a speed sensorless vector control system for induction motors using q-axis flux with parameter identification. In this paper, we go further to discuss the system stability in both motoring and regenerative operation by computing the pole-zero trajectories of the linear model, with the emphasis on the error influence of stator resistance and its identification gain. The stability improvement is significant by changing the sign of the identification gain, according to the motor operation state. The effectiveness is verified by digital simulation and experiment

Keywords

angular velocity control; electric resistance; induction motor drives; machine control; machine theory; magnetic flux; parameter estimation; poles and zeros; stability; stators; variable speed drives; digital simulation; error influence; linear model; motoring operation; parameter identification; pole-zero trajectories; q-axis flux; regenerative operation; speed sensorless induction motor vector control; stability improvement; stator resistance; stator resistance identification; Application software; Control systems; Digital simulation; Induction motors; Machine vector control; Robustness; Sensorless control; Stability; Stators; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE

Conference_Location

Fukuoka

ISSN

0275-9306

Print_ISBN

0-7803-4489-8

Type

conf

DOI

10.1109/PESC.1998.703390

Filename

703390