A comparative study of sliding mode and Model Reference Adaptive Speed observers for induction motor drives

Author

Khater, M.M. ; Zaky, M.S. ; Yasin, H. ; Shokralla, S.S. ; EI-Sabbe, A.

Author_Institution

Dept. of Electr. Eng., Minoufiya Univ., Shebin EI-Kom, Egypt

Volume

2

fYear

2006

fDate

19-21 Dec. 2006

Firstpage

434

Lastpage

440

Abstract

The paper presents a comparative study of two different speed observer techniques for a sensorless induction motor drive. Both Model Reference Adaptive System (MRAS) and sliding mode control theories are considered. The speed estimation algorithms based on both techniques are derived and implemented in a simulation program. The robustness of both speed estimation algorithms against load torque changes and motor parameters variations is investigated. The problems of PI controller associated with MRAS speed observer under these conditions are also investigated. The convergence of sliding mode speed observer is examined using Lyapunov theory. Simulation results are presented and discussed.

Keywords

Lyapunov methods; PI control; angular velocity control; induction motor drives; model reference adaptive control systems; observers; sensorless machine control; variable structure systems; Lyapunov theory; MRAS speed observer; PI controller; load torque; model reference adaptive system adaptive speed observers; motor parameter variation; sensorless induction motor drive; sliding mode control; sliding mode speed observer; speed estimation algorithms; Adaptive systems; Artificial intelligence; Control systems; Induction motor drives; Induction motors; Machine vector control; Programmable control; Robustness; Sensorless control; Sliding mode control; Lyapunov theory; MRAS observer; Speed Sensorless; sliding-mode observer;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Systems Conference, 2006. MEPCON 2006. Eleventh International Middle East

Conference_Location

El-Minia

Print_ISBN

978-1-4244-5111-1

Type

conf

Filename

5372449