Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31991
Title: A novel observer-based flux estimation for speed sensorless DFO control of induction machine
Authors: Wang, ZS
Ho, SL 
Cheng, EKW 
Issue Date: 2005
Source: Electric power components and systems, 2005, v. 33, no. 3, p. 333-348
Abstract: This article proposes a novel closed-loop rotor flux observer to estimate the rotor flux and velocity of induction motors. With the proposed algorithm, the accuracy of the estimated flux is guaranteed when the estimated stator current converges to its actual one. With the help of the estimated rotor flux magnitude and angle information, the direct rotor field orientation vector control can be implemented, and the rotor speed can be derived. Compared with the traditional Luenberger observer, the salient advantage of the proposed observer-based flux estimation is that the flux estimation is independent of either the estimated speed error or rotor time constant deviation. The validity of the proposed method is verified by intensive digital simulation results.
Keywords: Direct field oriented vector control
Induction motor
Speed-sensorless
Publisher: Taylor & Francis
Journal: Electric power components and systems 
ISSN: 1532-5008
EISSN: 1532-5016
DOI: 10.1080/15325000590474681
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