Conference Proceeding

Speed sonsorless vector control of induction motor using adaptive model reference method

USTHB, Machines Drives Control Lab., Bab-Ezzouar;
07/2008; DOI:10.1109/SPEEDHAM.2008.4581120 ISBN: 978-1-4244-1663-9 pp.1120-1124 In proceeding of: Power Electronics, Electrical Drives, Automation and Motion, 2008. SPEEDAM 2008. International Symposium on
Source: IEEE Xplore

ABSTRACT In this paper, we studied the vector control with orientation of rotor-flux by using PI regulators for an induction machine without speed sensor, and with adaptation of the rotor resistance. The rotor speed is estimated by using the model reference adaptive system approach (MRAS). This method consists of using two models. The first one is the reference model and the second is an adjustable one in which two components of the stator flux, obtained from the measurement of the currents and stator voltages, are estimated. The estimated rotor speed is then obtained by canceling the difference between stator-flux of the model of reference and those of the adjustable model. Satisfactory results of simulation are presented at the end of this paper to highlight the proposed method.

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Keywords

adjustable model
 
currents
 
estimated rotor speed
 
induction machine
 
model reference adaptive system approach
 
models
 
MRAS
 
proposed method
 
reference model
 
rotor resistance
 
rotor speed
 
rotor-flux
 
Satisfactory results
 
speed sensor
 
stator flux
 
stator-flux
 
vector control