Robust speed estimation of an induction motor under the conditions of rotor time constant variability due to the rotor deep-bar effect

• Autorzy: Rolek Jarosław , Utrata Grzegorz , Kaplon Andrzej

Identyfikatory

DOI

10.24425/aee.2020.133028

• Języki publikacji: EN

Abstrakty

EN

Accurate information on Induction Motor (IM) speed is essential for robust operation of vector controlled IM drives. Simultaneous estimation of speed provides redundancy in motor drives and enables their operation in case of a speed sensor failure. Furthermore, speed estimation can replace its direct measurement for low-cost IM drives or drives operated in difficult environmental conditions. During torque transients when slip frequency is not controlled within the set range of values, the rotor electromagnetic time constant varies due to the rotor deep-bar effect. The model-based schemes for IM speed estimation are inherently more or less sensitive to variability of IM electromagnetic parameters. This paper presents the study on robustness improvement of the Model Reference Adaptive System (MRAS) based speed estimator to variability of IM electromagnetic parameters resulting from the rotor deep-bar effect. The proposed modification of the MRAS-based speed estimator builds on the use of the rotor flux voltage-current model as the adjustable model. The verification of the analyzed configurations of the MRAS-based speed estimator was performed in the slip frequency range corresponding to the IM load adjustment range up to 1.30 of the stator rated current. This was done for a rigorous and reliable assessment of estimators’ robustness to rotor electromagnetic parameter variability resulting from the rotor deep-bar effect. The theoretical reasoning is supported by the results of experimental tests which confirm the improved operation accuracy and reliability of the proposed speed estimator configuration under the considered working conditions in comparison to the classical MRAS-based speed estimator.

Słowa kluczowe

EN

deep-bar effect; estimation; induction motors; motor drives

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2020
• Tom: Vol. 69, nr 2
• Strony: 319--333
• Opis fizyczny: Bibliogr. 24 poz., rys., tab., wz.

Twórcy

autor

Rolek Jarosław

• Department of Industrial Electrical Engineering and Automatic Control, Kielce University of Technology, 7 Tysiaclecia Panstwa Polskiego Ave., 25-314 Kielce, Poland

autor

Utrata Grzegorz

• Faculty of Electrical Engineering, Czestochowa University of Technology 17 Armii Krajowej Ave., 42-200 Czestochowa, Poland

autor

Kaplon Andrzej

• Department of Industrial Electrical Engineering and Automatic Control, Kielce University of Technology, 7 Tysiaclecia Panstwa Polskiego Ave., 25-314 Kielce, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).