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Open AccessArticle

Developing Induction Motor State Observers with Increased Robustness

Faculty of Electrical Engineering, Silesian University of Technology, 44-100 Gliwice, Poland
Author to whom correspondence should be addressed.
Energies 2020, 13(20), 5487;
Received: 28 September 2020 / Revised: 11 October 2020 / Accepted: 14 October 2020 / Published: 20 October 2020
(This article belongs to the Special Issue Fail-Safe Electric Drives and Safety-Related Issues)
This paper presents the results of recently conducted research on Luenberger observers with non-proportional feedbacks. The observers are applied for the reconstruction of magnetic fluxes of an induction motor. Structures of the observers known from the control theory are presented. These are a proportional observer, a proportional-integral observer, a modified integral observer, and an observer with additional integrators. The practical application of some of these observers requires modifications to their structures. In the paper, the simulation results for all mentioned types of observers are presented. The simulations are performed with a Scilab-Xcos model which is attached to this paper. The problem of gains selection of the observers is discussed. Gains are selected with the described optimization method based on a genetic algorithm. A Scilab file launching the genetic algorithm also is attached to this paper. View Full-Text
Keywords: Luenberger observer; induction motor; pole placement Luenberger observer; induction motor; pole placement
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Białoń, T.; Pasko, M.; Niestrój, R. Developing Induction Motor State Observers with Increased Robustness. Energies 2020, 13, 5487.

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