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Evaluation of the effects of rotor harmonics in a doubly-fed induction generator with harmonic induced speed ripple.

Liao, Y. and Ran, L. and Putrus, G. A. and Smith, K. S. (2003) 'Evaluation of the effects of rotor harmonics in a doubly-fed induction generator with harmonic induced speed ripple.', IEEE transactions on energy conversion., 18 (4). pp. 508-515.

Abstract

This paper is concerned with the low-frequency harmonics which originate from the rotor inverter of a doubly-fed induction generator (DFIG). By including the mechanical speed response, it expands the transformer approach previously taken to analyze the harmonic transfer in the machine. A numerical method is proposed to calculate the stator current sidebands, which can be used to predict the voltage fluctuation at the system busbar. It is shown that the pulsating torque associated with the rotor harmonics can induce speed ripple depending on the inertia, causing a significant change in the stator current spectrum. Experiment and simulation verify the analysis and the proposed calculation method.

Item Type:Article
Keywords:Modulation, Pulsating torque, Spectrum motor drives, Torsional vibrations.
Full text:PDF - Published Version (483Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1109/TEC.2003.816606
Publisher statement:©2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Record Created:27 May 2008
Last Modified:24 May 2011 16:44

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