Speed sensor-less direct torque control of an induction machine in low speed region

Author

Wu, Jixiong ; Li, Yongdong ; Chen, Jie ; Hu, Hu

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing, China

Volume

1

fYear

2000

fDate

2000

Firstpage

464

Abstract

This paper presents a practical improvement to the conventional stator flux estimator for digital direct torque control of an induction motor, in which the predictive torque control is adapted to decrease the torque ripple. In addition, the slip frequency estimation method of speed is proposed to get a fast and rather precise speed control, leading to a high performance direct torque control of an induction motor in low speed region. Finally the experimental results show the validity of the proposed method

Keywords

angular velocity control; induction motors; machine control; parameter estimation; predictive control; torque control; digital direct torque control; induction motor; low speed region; predictive torque control; slip frequency estimation method; speed control; speed estimation; speed sensor-less direct torque control; stator flux estimator; torque ripple; Cutoff frequency; Equations; Frequency estimation; Induction machines; Induction motors; Rotors; State estimation; Stators; Torque control; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2000. Proceedings. IPEMC 2000. The Third International

Conference_Location

Beijing

Print_ISBN

7-80003-464-X

Type

conf

DOI

10.1109/IPEMC.2000.885449

Filename

885449