DocumentCode :
2846239
Title :
Induction motor control in presence of magnetic saturation: Speed regulation and power factor correction
Author :
El Fadili, A. ; Giri, F. ; El Magri, A. ; Dugard, L. ; Ouadi, H.
Author_Institution :
EMI, LAII, Rabat, Morocco
fYear :
2011
fDate :
June 29 2011-July 1 2011
Firstpage :
5406
Lastpage :
5411
Abstract :
Controlling induction motors have been given a great deal of interest. Generally, the control issue has been dealt with, neglecting the saturation effect of the magnetic characteristic and ignoring the presence of the AC/DC/AC converter. The originality of the present work is twofold: (i) the magnetic saturation effect is accounted for in the control design model; (ii) the induction motor is considered together with its AC/DC/AC converter. The control objectives for the association ´converter-machine´ are: (i) forcing the motor speed to track a varying reference signal and optimizing the rotor flux reference, (ii) regulating the DC Link voltage, (iii) assuring a satisfactory power factor correction (PFC) with respect to the power supply net. A nonlinear multi-loop controller is designed using the backstepping technique and formally analyzed using Lyapunov stability and averaging theory. In addition to closed-loop stability, it is proved that all control objectives (motor speed tracking, DC link voltage regulation and unitary power factor) are asymptotically achieved, up to unavoidable, but small, harmonic errors (ripples).
Keywords :
AC-DC power convertors; DC-AC power convertors; Lyapunov methods; closed loop systems; control system synthesis; harmonics; induction motors; machine control; nonlinear control systems; power factor correction; power supplies to apparatus; rotors; velocity control; voltage control; AC/DC/AC converter; DC link voltage regulation; Lyapunov stability; PFC; association converter-machine; averaging theory; backstepping technique; closed-loop stability; control design model; control objectives; harmonic errors; induction motor control; magnetic characteristic; magnetic saturation effect; motor speed tracking; nonlinear multiloop controller; power factor correction; power supply net; reference signal tracking; ripples; rotor flux reference; speed regulation; unitary power factor; Equations; Induction motors; Inverters; Rectifiers; Rotors; Stators; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
American Control Conference (ACC), 2011
Conference_Location :
San Francisco, CA
ISSN :
0743-1619
Print_ISBN :
978-1-4577-0080-4
Type :
conf
DOI :
10.1109/ACC.2011.5990754
Filename :
5990754
Link To Document :
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