Rotor Speed Estimation Using Zero-Crossing Times Signal of Stator Current

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 resista...

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Hauptverfasser: Ghanbarian, M.M., Mohammadi, A., Kavehnia, F., Keivani, H., Askari, M.R., Mohammadi, S.
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Mohammadi, A.
Kavehnia, F.
Keivani, H.
Askari, M.R.
Mohammadi, S.
description 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.
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identifier ISSN: 1934-1768
ispartof 2007 Chinese Control Conference, 2007, p.298-302
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects AC motors
DC motors
Equations
Induction Motor
Induction motor drives
Induction motors
Machine vector control
Observers
Rotors
Sensorless Vector Control
Speed Estimation
Stators
Torque control
Zero-Crossing Time
title Rotor Speed Estimation Using Zero-Crossing Times Signal of Stator Current
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