Title :
A simple speed control method for small induction motors base on phase difference
Author :
Yuan, Yiwei ; Tsuchiya, Junichi ; Simizu, Toshihisa ; Kimura, Gunji ; Watanabe, Ikuo ; Naniwa, Koji
Author_Institution :
Dept. of Electr. Eng., Tokyo Metropolitan Univ., Japan
Abstract :
Some form of simple control is needed for small induction motors. This paper proposes a simple speed control method for small induction motors using a simple calculation without the need for a speed sensor. In this method, the load torque is estimated from the detected power factor of the induction motor and the speed of the induction motor is compensated for by a frequency-boost technique. The boost frequency is selected from a data table measured beforehand. Satisfactory experimental results are obtained with 90 W induction motors
Keywords :
compensation; control system synthesis; induction motors; machine control; machine testing; machine theory; parameter estimation; small electric machines; velocity control; 90 W; control design; frequency-boost compensation technique; load torque estimation; phase difference; power factor; small induction motors; speed control method; Equivalent circuits; Fluctuations; Frequency measurement; Induction motors; Phase detection; Rotors; Sensorless control; Stators; Torque measurement; Velocity control;
Conference_Titel :
Industrial Electronics, Control, and Instrumentation, 1995., Proceedings of the 1995 IEEE IECON 21st International Conference on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-3026-9
DOI :
10.1109/IECON.1995.483413
