NDLI: Sensorless control of three-pole active magnetic bearings using saliency-tracking based methods

Content Provider	IEEE Xplore Digital Library
Author	Garcia, P. Guerrero, J.M. Briz, F. Reigosa, D.
Copyright Year	2009
Description	Author affiliation: University of Oviedo. Dept.of Elec., Computer & System Engineering, Gijón, 33204, Spain (Garcia, P.; Guerrero, J.M.; Briz, F.; Reigosa, D.)
Abstract	This paper proposes the use of saliency-tracking based techniques for sensorless control of three-pole active magnetic bearings. Changes in the air gap resulting from misalignment between stator and rotor axis result in an unbalance in the stator electromagnetic circuit. Injection of a high frequency signal voltage, which is superimposed to the fundamental excitation providing active control, allows measurement of the unbalance, from which an estimation of the rotor position can be obtained. Two different signals are studied for this purpose: 1) negative sequence high frequency current and 2) zero sequence high frequency voltage. The paper develops analytical models of three-pole magnetic bearings, both for control and for position estimation which are evaluated through experimental analysis.
Starting Page	3984
Ending Page	3991
File Size	2216845
Page Count	8
File Format	PDF
ISBN	9781424428939
DOI	10.1109/ECCE.2009.5316103
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Analytical models Electromagnetic measurements Circuits Sensorless control Stators Position measurement Frequency estimation Frequency measurement Voltage control Magnetic levitation
Content Type	Text
Resource Type	Article

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