Title :
Transient response of speed sensorless control method based on phase difference [for induction motors]
Author :
Tsuchiya, Junichi ; Watanabe, Kazuhiro ; Simizu, Toshihisa ; Kimura, Gunji ; Watanabe, Ikuo ; Naniwa, Koji
Author_Institution :
Dept. of Electr. Eng., Tokyo Metropolitan Univ., Japan
Abstract :
A simple speed control scheme is needed for small induction motors. Here, the authors proposed a simple method in which the motor´s load torque is estimated from the phase difference between the stator current and the stator voltage, and the drive frequency is calculated from the estimated torque. As a result, the average speed of the induction motor is kept constant. This paper presents the principle of this method and the transient responses of torque fluctuations and speed commands with a 90 W induction motor
Keywords :
control system analysis; control system synthesis; induction motors; machine control; machine testing; machine theory; parameter estimation; small electric machines; transient analysis; transient response; velocity control; 90 W; control design; control simulation; drive frequency calculation; load torque estimation; phase difference; small induction motors; speed commands; speed sensorless control; stator current; stator voltage; torque fluctuations; transient response; Fluctuations; Frequency estimation; Induction motors; Phase estimation; Sensorless control; Stators; Torque; Transient response; Velocity control; Voltage;
Conference_Titel :
Power Conversion Conference - Nagaoka 1997., Proceedings of the
Conference_Location :
Nagaoka
Print_ISBN :
0-7803-3823-5
DOI :
10.1109/PCCON.1997.638230
