Observer based parallel IM speed and parameter estimation

The detailed presentation of modern algorithm for the rotor speed estimation of an induction motor (IM) is shown. The algorithm includes parallel speed and resistance parameter estimation and allows a robust shaft-sensorless operation in diverse conditions, including full load and low speed operatio...

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Bibliographic Details
Published in:Serbian journal of electrical engineering 2014, Vol.11 (3), p.501-521
Main Authors: Skoko, Sasa, Marcetic, Darko, Vasic, Veran, Oros, Djura
Format: Article
Language:English
Subjects:
induction motor
Luenberger observer
parameter identification
Online Access:Get full text
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Summary:The detailed presentation of modern algorithm for the rotor speed estimation of an induction motor (IM) is shown. The algorithm includes parallel speed and resistance parameter estimation and allows a robust shaft-sensorless operation in diverse conditions, including full load and low speed operation with a large thermal drift. The direct connection between the injected electric signal in the d-axis and the component of injected rotor flux were pointed at. The algorithm that has been applied in the paper uses the extracted component of the injected rotor flux in the d-axis from the observer state vector and filtrated measured electricity of one motor phase. By applying the mentioned algorithm, the system converges towards the given reference.
ISSN:1451-4869
2217-7183
DOI:10.2298/SJEE1403501S