Direct active and reactive power control of DFIG for wind energy generation

L. Xu, P. Cartwright

Research output: Contribution to journalArticle

585 Citations (Scopus)

Abstract

This paper presents a new direct power control (DPC) strategy for a doubly fed induction generator (DFIG)-based wind energy generation system. The strategy is based on the direct control of stator active and reactive power by selecting appropriate voltage vectors on the rotor side. It is found that the initial rotor flux has no impact on the changes of the stator active and reactive power. The proposed method only utilizes the estimated stator flux so as to remove the difficulties associated with rotor flux estimation. The principles of this method are described in detail in this paper. The only machine parameter required by the proposed DPC method is the stator resistance whose impact on the system performance is found to be negligible. Simulation results on a 2 MW DFIG system are provided to demonstrate the effectiveness and robustness of the proposed control strategy during variations of active and reactive power, rotor speed, machine parameters, and converter dc link voltage.
Original languageEnglish
Pages (from-to)750-758
Number of pages9
JournalIEEE Transactions on Energy Conversion
Volume21
Issue number3
DOIs
Publication statusPublished - Sep 2006

Keywords

  • induction generators
  • power control
  • reactive power
  • robust control
  • rotors
  • stators
  • system performance
  • voltage control
  • wind energy generation
  • direct power control
  • direct torque control
  • Doubly fed induction generator
  • voltage source convertor
  • voltage vector

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