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Author Foo, G. ♦ Rahman, M.F.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2009
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Rotors ♦ Torque control ♦ Sensorless control ♦ Synchronous motors ♦ Stators ♦ Frequency estimation ♦ Permanent magnet motors ♦ Telecommunication control ♦ Australia ♦ Electronic mail ♦ stator flux observer ♦ direct torque and flux control ♦ extended rotor flux ♦ interior permanent magnet synchronous motor
Abstract Direct torque control (DTC) of interior permanent magnet (IPM) synchronous motors is known to deliver fast torque and flux dynamic responses. However, the poor flux estimation at very low speeds has been its largest drawback. A multitude of flux observers have been proposed for flux estimation but most of them fail to fare in the low speed region. This paper proposes a new stator flux observer for improved flux estimation at very low speeds. The observer is based on a novel extended rotor flux concept which does away with the saliency in an IPM motor. This observer is combined with the direct torque and flux control (DTFC) scheme to achieve a high performance sensorless IPM motor drive over a wide speed range. Experimental results at very low speeds −5 rpm and 10 rpm without signal injection confirm the effectiveness of the proposed approach.
Description Author affiliation: The University of New South Wales, Australia, School of Electrical Engineering & Telecommunications (Foo, G.; Rahman, M.F.)
ISBN 9781424445462
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2009-01-23
Publisher Place Singapore
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 548.80 kB
Page Count 6
Starting Page 1
Ending Page 6

Source: IEEE Xplore Digital Library