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

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...

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Bibliographische Detailangaben
Hauptverfasser:	Khater, M.M., Zaky, M.S., Yasin, H., Shokralla, S.S., EI-Sabbe, A.
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Adaptive systems Artificial intelligence Control systems Induction motor drives Induction motors Lyapunov theory Machine vector control MRAS observer Programmable control Robustness Sensorless control Sliding mode control sliding-mode observer Speed Sensorless
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Beschreibung
Zusammenfassung:	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.