Title :
Induction motors control using Zero-Crossing Times signal of stator currents
Author :
Askari, Mohamadraza ; Keivani, H. ; Ganbariyan, M. ; Kavehnia, F.
Author_Institution :
Islamic Azad Univ., Tehran
Abstract :
The purpose of this study is to illustrate a new method for sensorless vector control of induction motors. This approach uses zero-crossing times (ZCT) signal of stator current to estimate rotor speed. ZCT signal contains useful information which can be used for estimation of rotor speed and resistance. We have used this information for online estimation of rotor speed. To avoid time consuming fast Fourier transformation (FFT) analysis of ZCT signal, we have used switchable high order Butterworth filters in order to extract rotor frequency. Simulation result has expressed good performance of this simple and inexpensive sensorless vector control of induction motors.
Keywords :
Butterworth filters; fast Fourier transforms; induction motors; machine vector control; fast Fourier transformation; induction motor control; online estimation; rotor frequency; sensorless vector control; stator currents; switchable high order Butterworth filters; zero-crossing times signal; AC motors; Equations; Induction motors; Intrusion detection; Machine vector control; Observers; Rotors; Sensorless control; Stators; Torque control;
Conference_Titel :
Universities Power Engineering Conference, 2007. UPEC 2007. 42nd International
Conference_Location :
Brighton
Print_ISBN :
978-1-905593-36-1
Electronic_ISBN :
978-1-905593-34-7
DOI :
10.1109/UPEC.2007.4469130
