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Research on DFIG flux damping control strategy based on imaginary damping winding

  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

For double-fed induction generator (DFIG) wind power system, when grid voltage fault happens, transient DC flux component will emerge in the stator. The transient DC flux will affect the performance of output power and electromagnetic torque of DFIG. In serious conditions over voltage and current will be induced in rotor side. To mitigate this problem, a novel flux damping control strategy of DFIG is proposed based on grid voltage oriented vector control and imaginary damping winding in this paper. Firstly the transient process of stator flux under grid faults is analyzed based on the electromagnetic relationship of DFIG. The stability of DFIG grid voltage vector oriented control strategy is also analyzed. Then based on the function of damping winding in synchronous generator the novel flux control is proposed and principles of it are introduced in details. The effects of the rotor-side converter's rate and the generator operation state are considered. The validity of the proposed method is verified using a typical 1.5MW DFIG in the Matlab/Simulink simulation environment. The proposed control strategy is proven to be able to increase damping rate of the transient DC flux component in stator effectively and improve the stability of control system.

Original languageEnglish
Title of host publicationProceedings, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society
Pages5318-5323
Number of pages6
DOIs
StatePublished - 2013
Event39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013 - Vienna, Austria
Duration: 10 Nov 201314 Nov 2013

Publication series

NameIECON Proceedings (Industrial Electronics Conference)

Conference

Conference39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013
Country/TerritoryAustria
CityVienna
Period10/11/1314/11/13

Keywords

  • DFIG
  • flux damping control
  • imaginary damping winding
  • wind power

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