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Author:

Yang, Lihui (Yang, Lihui.) | Xu, Zhao (Xu, Zhao.) | Ostergaard, Jacob (Ostergaard, Jacob.) | Dong, Zhao Yang (Dong, Zhao Yang.) | Wong, Kit Po (Wong, Kit Po.)

Indexed by:

SCIE EI Scopus

Abstract:

This paper presents an advanced control strategy for the rotor and grid side converters of the doubly fed induction generator (DFIG) based wind turbine (WT) to enhance the low-voltage ride-through (LVRT) capability according to the grid connection requirement. Within the new control strategy, the rotor side controller can convert the imbalanced power into the kinetic energy of the WT by increasing its rotor speed, when a low voltage due to a grid fault occurs at, e. g., the point of common coupling (PCC). The proposed grid side control scheme introduces a compensation term reflecting the instantaneous DC-link current of the rotor side converter in order to smooth the DC-link voltage fluctuations during the grid fault. A major difference from other methods is that the proposed control strategy can absorb the additional kinetic energy during the fault conditions, and significantly reduce the oscillations in the stator and rotor currents and the DC bus voltage. The effectiveness of the proposed control strategy has been demonstrated through various simulation cases. Compared with conventional crowbar protection, the proposed control method can not only improve the LVRT capability of the DFIG WT, but also help maintaining continuous active and reactive power control of the DFIG during the grid faults.

Keyword:

Doubly fed induction generator (DFIG) low voltage ride through power system fault wind turbine

Author Community:

  • [ 1 ] [Yang, Lihui] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China
  • [ 2 ] [Xu, Zhao] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China
  • [ 3 ] [Ostergaard, Jacob] Tech Univ Denmark, Ctr Elect Technol, Dept Elect Engn, DK-2800 Lyngby, Denmark
  • [ 4 ] [Dong, Zhao Yang] Univ Newcastle, Ctr Intelligent Elect Networks, Newcastle, NSW 2300, Australia
  • [ 5 ] [Wong, Kit Po] Univ Western Australia, Sch Elect Elect & Comp Engn, Perth, WA 6009, Australia

Reprint Author's Address:

  • Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China.

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Source :

IEEE TRANSACTIONS ON POWER SYSTEMS

ISSN: 0885-8950

Year: 2012

Issue: 2

Volume: 27

Page: 713-722

2 . 9 2 1

JCR@2012

6 . 6 6 3

JCR@2020

ESI Discipline: ENGINEERING;

ESI HC Threshold:157

JCR Journal Grade:2

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 252

SCOPUS Cited Count: 346

ESI Highly Cited Papers on the List: 35 Unfold All

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30 Days PV: 18

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