Title: A novel adaptive variable speed control strategy for wound rotor induction motors

Authors: Dieudonné Ekang; Donatien Nganga-Kouya; Aime Francis Okou

Addresses: Department of Electrical Engineering, Ecole Normale Supérieure de l'Enseignement Technique of Gabon, Leon Mba Boulevard, Libreville, BP 3989, Gabon; Mechanical Engineering Department, Ecole Normale Supérieure de l'Enseignement Technique of Gabon, Leon Mba Boulevard, Libreville, BP 3989, Gabon ' Department of Electrical Engineering, Ecole Normale Supérieure de l'Enseignement Technique of Gabon, Leon Mba Boulevard, Libreville, BP 3989, Gabon; Mechanical Engineering Department, Ecole Normale Supérieure de l'Enseignement Technique of Gabon, Leon Mba Boulevard, Libreville, BP 3989, Gabon ' Department of Electrical and Computer Engineering, Royal Military College of Canada, 13 General Crerar Crescent, Kingston, Ontario, K7K 7B4, Canada

Abstract: A new approach is proposed for the design of an adaptive variable speed controller for an induction motor. This design approach is based on a new model for induction motors in the (α/β) reference frame. The model state variables are constant in steady state and therefore enable the application of adaptive backstepping control design techniques to find controller equations and adaptation laws that ensure that the rotor speed and flux track their reference values despite significant changes in machine resistances and inductances due to temperature and magnetic saturation. The proposed controller is tested in simulation. Results show robust steady state and transient performances.

Keywords: wound rotor of induction motor; adaptive backstepping control; speed control; rotor flux control; stability analysis.

DOI: 10.1504/IJMIC.2023.128768

International Journal of Modelling, Identification and Control, 2023 Vol.42 No.1, pp.31 - 45

Received: 18 Aug 2021
Accepted: 30 Jan 2022
Published online: 03 Feb 2023 *