A Comprehensive LVRT Control Strategy for DFIG Wind Turbines with Enhanced Reactive Power Support

D. Xie, Z. Xu, L. Yang, J. Østergaard, Y. Xue, Kitpo Wong

    Research output: Contribution to journalArticlepeer-review

    171 Citations (Scopus)

    Abstract

    The paper presents a new control strategy to enhance the ability of reactive power support of a doubly fed induction generator (DFIG) based wind turbine during serious voltage dips. The proposed strategy is an advanced low voltage ride through (LVRT) control scheme, with which a part of the captured wind energy during grid faults is stored temporarily in the rotor's inertia energy and the remaining energy is available to the grid while the DC-link voltage and rotor current are kept below the dangerous levels. After grid fault clearance, the control strategy ensures smooth release of the rotor's excessive inertia energy into the grid. Based on these designs, the DFIG's reactive power capacity on the stator and the grid side converter is handled carefully to satisfy the new grid code requirements strictly. Simulation studies are presented and discussed. © 2013 IEEE.
    Original languageEnglish
    Pages (from-to)3302-3310
    JournalIEEE Transactions on Power Systems
    Volume28
    Issue number3
    DOIs
    Publication statusPublished - 2013

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