Control of DFIG based wind generation systems under unbalanced network supply

Yi Wang, L. Xu

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

29 Citations (Scopus)
166 Downloads (Pure)


This paper develops a dynamic model and control scheme for DFIG systems to improve the performance and stability under unbalanced grid conditions. A dynamic DFIG model containing the positive and negative sequence components is presented using stator voltage orientation. The proposed model accurately illustrates the active power, reactive power and torque oscillations, and provides a basis for DFIG control system design during unbalanced network supply. Various control targets such as eliminating the oscillations of the torque, active/reactive power are discussed and the required rotor negative sequence current for fulfilling different control targets are described. Performance of a DFIG-based wind turbine under unbalanced condition using the proposed control method is evaluated by simulation studies using Matlab/Simulink. The proposed control scheme significantly attenuates the DFIG torque or active power oscillations during network unbalance whereas significant torque/power oscillations exist with the conventional control schemes.

Original languageEnglish
Title of host publicationIEEE IEMDC 2007
Subtitle of host publicationProceedings of the International Electric Machines and Drives Conference
Place of PublicationNew York
Number of pages5
ISBN (Print)9781424407422
Publication statusPublished - 16 Jul 2007
EventIEEE International Electric Machines & Drives Conference (IEMDC) - Antalya, Turkey
Duration: 3 May 20075 May 2007


ConferenceIEEE International Electric Machines & Drives Conference (IEMDC)
CityAntalya, Turkey


  • wind turbines
  • power system modeling
  • control system synthesis
  • control systems
  • dfig-based wind generation systems
  • wind generation systems
  • dfig-based
  • unbalanced network supply

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