Modified controls for grid-connected wind-turbine Doubly Fed Induction Generator under Unbalanced Voltage Dip for Torque Stability and Reduction of Current Harmonic

Truc Pham-Dinh, Hai Nguyen-Thanh, Kenko Uchida, Nguyen Gia Minh Thao

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)

    Abstract

    This paper presents modified Stator Voltage Oriented Control (SVOC) for Doubly Fed Induction Generator (DFIG) in wind turbines to reduce torque pulsation during unbalanced voltage dips, and current waveforms are also improved with the decreasing of harmonics. The proposed schemes utilize multiple PI controllers with anti-windup to obtain commanded rotor currents and also introduce extra commanded values for rotor current; as well, Notch filters are used to eliminate the second-order harmonic components. The designed system consists of a wound-rotor induction generator and back-to-back power-electronic converters connected to both rotor and grid sides. Wherein, the modifications are applied to the control of rotor side converter (RSC). Simulations in Matlab/Simulink illustrate the enhanced stability of torque response and the improvement of current waveform. Comparisons of the simulation results with a traditional Stator Flux Oriented Control (SFOC) and a previously suggested modification of SFOC for operation under unbalanced voltage dip are provided to evaluate the newly proposed methods in the paper.

    Original languageEnglish
    Title of host publicationProceedings of the SICE Annual Conference
    PublisherSociety of Instrument and Control Engineers (SICE)
    Pages1493-1500
    Number of pages8
    ISBN (Print)9784907764463
    DOIs
    Publication statusPublished - 2014 Oct 23
    Event2014 53rd Annual Conference of the Society of Instrument and Control Engineers of Japan, SICE 2014 - Sapporo
    Duration: 2014 Sep 92014 Sep 12

    Other

    Other2014 53rd Annual Conference of the Society of Instrument and Control Engineers of Japan, SICE 2014
    CitySapporo
    Period14/9/914/9/12

    Keywords

    • Anti-windup
    • DFIG
    • PI controller
    • SFOC
    • SVOC
    • Unbalanced Voltage Dip
    • Wind Turbine

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Control and Systems Engineering
    • Computer Science Applications

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  • Cite this

    Pham-Dinh, T., Nguyen-Thanh, H., Uchida, K., & Thao, N. G. M. (2014). Modified controls for grid-connected wind-turbine Doubly Fed Induction Generator under Unbalanced Voltage Dip for Torque Stability and Reduction of Current Harmonic. In Proceedings of the SICE Annual Conference (pp. 1493-1500). [6935281] Society of Instrument and Control Engineers (SICE). https://doi.org/10.1109/SICE.2014.6935281