Title :
Novel speed estimation method for induction motor based on extra rotor synchronous current control
Author :
Kaku, Bin ; Miyashita, Ichiro ; Yasukawa, Shinobu
Author_Institution :
Tech. Res. Lab., Tokyo Electr. Manuf. Co. Ltd., Kanagawa, Japan
Abstract :
A novel speed estimation method for an induction motor is presented. Based on the carrier frequency sinusoidal modulation PWM, an extra frequency controllable rotor current can be generated. The amplitude of this current can be controlled to be zero by controlling its frequency to be equal to the rotating frequency of an induction motor, so the rotating frequency of the induction motor can be estimated as the frequency of the extra rotor current when its amplitude is zero
Keywords :
PWM invertors; electric current control; frequency control; induction motors; machine control; parameter estimation; rotors; PWM invertors; carrier frequency sinusoidal modulation PWM; current amplitude control; frequency control; frequency controllable rotor current; induction motor; rotating frequency; rotor synchronous current control; speed estimation method; Amplitude estimation; Current control; Equations; Frequency estimation; Frequency modulation; Induction motors; Pulse width modulation; Rotors; Stators; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.701999
