Comparative stability analysis of stator current error-based estimators of induction motor speed

• Autorzy: Korzonek M. , Orłowska-Kowalska T.

Identyfikatory

DOI

10.2478/pead-2018-0010

• Języki publikacji: EN

Abstrakty

EN

This paper deals with the stability problem of three stator current error-based estimators of induction motor speed, especially in the regenerating operation mode. The stability of the adaptive full-order observer (AFO) and two model reference adaptive systems (MRASs) based on a stator current error (MRAS^CC and MRAS^CV) is briefly analysed, and the stability borders are determined and compared. It is shown that MRAS^CV speed estimator is stable in the whole operation range including the regenerating mode without any modifications. The stability enhancement method for AFO and MRAS^CC estimators is described, and the solution for their stability improvement is proposed. Torque-speed characteristics of the analysed MRAStype estimators in a wide range of drive speed and load torque changes are given, as well as the behaviour of estimators during transients is compared. The theoretical analysis and simulation test results are validated by experimental tests.

Słowa kluczowe

EN

induction motor; MRAS-type estimator; stability; regenerating mode

• Wydawca: De Gruyter
• Czasopismo: Power Electronics and Drives
• Rocznik: 2018
• Tom: Vol. 3 (38), No. 1
• Strony: 187--203
• Opis fizyczny: Bibliogr. 34 poz., rys., tab.

Twórcy

autor

Korzonek M.

• Department of Electrical Machines, Drives and Measurements, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Orłowska-Kowalska T.

• Department of Electrical Machines, Drives and Measurements, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Bibliografia

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