NDLI: Robust Rotor Flux and Speed Control of Induction Motors Using On-Line Time-Varying Rotor Resistance Adaptation

Content Provider	IEEE Xplore Digital Library
Author	Kenne, G. Ahmed-Ali, T. Nkwawo, H. Lamnabhi-Lagarrigue, F.
Copyright Year	2005
Description	Author affiliation: Department of Electrical Engineering, FOTSO Victor University Institute of Technology, University of Dschang, P.O. Box 134 Bandjoun, Cameroon, godpromesse.kenne@iutfv-bandjoun.net (Kenne, G.)
Abstract	A novel scheme is proposed for direct speed and flux control of induction motors using on-line estimation of the rotor resistance. The stator current/voltage and the rotor mechanical angular speed are assumed to be measured. The design is based on the variable structure theories. The overall controller combined with on-line rotor resistance adaptation is implemented by using rotor flux and electromagnetic torque observers and the exponential convergence of these observers is demonstrated. The originality of the work is that it considers the unknown rotor resistance as time-varying. The convergence of the estimated rotor resistance is achieved using a Lyapunov-like technique and this guarantees the stability of the rotor speed and flux tracking. Simulation results show the quick convergence of both estimated rotor resistance and tracking of the rotor speed and flux. The robustness analysis revealed that the direct speed and flux tracking schemes are insensitive to the stator/rotor resistance variations (up to 50% for Rsand 100% for Rr) and to stator currents measurements noises. The proposed method can also be applied to failure and fault detection since it is easily implementable in real-time.
Starting Page	7768
Ending Page	7774
File Size	1248659
Page Count	7
File Format	PDF
ISBN	0780395670
DOI	10.1109/CDC.2005.1583417
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-12-15
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	IEEE/EUCA
Subject Keyword	Rotors Robust control Velocity control Induction motors Stators Convergence Mechanical variables control Current measurement Voltage Electrical resistance measurement induction motor Time-varying parameter parameter estimation/identification sliding mode observer equivalent control adaptive control
Content Type	Text
Resource Type	Article

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