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

Liao, Y.; Ran, L.; Putrus, G.A.; Smith, K.S.

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Authors

Y. Liao

L. Ran

G.A. Putrus

K.S. Smith



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.

Citation

Liao, Y., Ran, L., Putrus, G., & Smith, K. (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), 508-515. https://doi.org/10.1109/tec.2003.816606

Journal Article Type Article
Publication Date 2003-12
Deposit Date May 27, 2008
Publicly Available Date May 27, 2008
Journal IEEE Transactions on Energy Conversion
Print ISSN 0885-8969
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 18
Issue 4
Pages 508-515
DOI https://doi.org/10.1109/tec.2003.816606
Keywords Modulation, Pulsating torque, Spectrum motor drives, Torsional vibrations.
Publisher URL http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?isnumber=27944&arnumber=1247776&count=10&index=5

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