Induction Motor PI Observer with Reduced-Order Integrating Unit

Tadeusz Białoń, Roman Niestrój, Jarosław Michalak and Marian Pasko
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Tadeusz Białoń: Faculty of Electrical Engineering, Silesian University of Technology, 2a Akademicka St., 44-100 Gliwice, Poland
Roman Niestrój: Faculty of Electrical Engineering, Silesian University of Technology, 2a Akademicka St., 44-100 Gliwice, Poland
Jarosław Michalak: Faculty of Electrical Engineering, Silesian University of Technology, 2a Akademicka St., 44-100 Gliwice, Poland
Marian Pasko: Faculty of Electrical Engineering, Silesian University of Technology, 2a Akademicka St., 44-100 Gliwice, Poland

Energies, 2021, vol. 14, issue 16, 1-12

Abstract: This article presents an innovative induction motor state observer designed to reconstruct magnetic fluxes and the angular speed of an induction motor for speed sensorless control system applications such as field-oriented control (FOC). This observer is an intermediate solution between the proportional observer and the classical proportional-integral (PI) observer with respect to which the order of the integrating unit is reduced. Additional modifications of the observer’s structure have been implemented to ensure stability and to improve its functional properties. As a result, two versions of the observer structure were produced and experimentally tested using a sensorless FOC control system. Both structures resulted in correct control system operation for a wide range of angular speeds, including low speed ranges.

Keywords: Luenberger observer; proportional-integral (PI) observer; induction motor; field oriented control (FOC); speed sensorless control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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