Dynamic modeling and direct power control of wind turbine driven DFIG under unbalanced network voltage conditions

J.B. Hu, Y.K. He, L. Xu

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

This paper proposes an analysis and a direct power control (DPC) design of a wind turbine driven doubly-fed induction generator (DFIG) under unbalanced network voltage conditions. A DFIG model described in the positive and negative synchronous reference frames is presented. Variations of the stator output active and reactive powers are fully deduced in the presence of negative sequence supply voltage and rotor flux. An enhanced DPC scheme is proposed to eliminate stator active power oscillation during network unbalance. The proposed control scheme removes rotor current regulators and the decomposition processing of positive and negative sequence rotor currents. Simulation results using PSCAD/EMTDC are presented on a 2-MW DFIG wind power generation system to validate the feasibility of the proposed control scheme under balanced and unbalanced network conditions.
Original languageEnglish
Pages (from-to)1731-1740
Number of pages9
JournalJournal of Zhejiang University. Science A
Volume9
Issue number12
DOIs
Publication statusPublished - Dec 2008

Keywords

  • doubly-fed induction generator (DFIG)
  • wind turbine
  • direct power control (DPC)
  • stator voltage oriented (SVO)
  • Unbalanced network
  • TM315
  • TM614

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