Title :
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
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;
Conference_Titel :
Power Electronics and Motion Control Conference, 2000. Proceedings. IPEMC 2000. The Third International
Conference_Location :
Beijing
Print_ISBN :
7-80003-464-X
DOI :
10.1109/IPEMC.2000.885449
