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Doubly Fed Induction Generator Open Stator Synchronized Control during Unbalanced Grid Voltage Condition

Author

Listed:
  • Akrama Khan

    (Department of Electrical Engineering, University of Cape Town, Cape Town 7701, South Africa)

  • Xiao Ming Hu

    (Department of Electrical Engineering, University of Cape Town, Cape Town 7701, South Africa)

  • Mohamed Azeem Khan

    (Department of Electrical Engineering, University of Cape Town, Cape Town 7701, South Africa)

  • Paul Barendse

    (Department of Electrical Engineering, University of Cape Town, Cape Town 7701, South Africa)

Abstract

In this paper, a systematic synchronization procedure is proposed for a doubly fed induction generator (DFIG) during unbalanced grid voltage conditions. The initial induced voltage at the open stator terminal is required to synchronize with the grid voltage in magnitude, frequency and phase. An open stator negative sequence rotor current controller is implemented with the conventional DFIG vector controller, which allows the induced stator voltage to become as unbalanced as the grid voltage, hence enabling a smooth connection. A brief comparison is provided for practical issues such as controller structure variation between DFIG open stator and normal operating conditions, and initial encoder rotor angle measurement offset. The procedure is validated experimentally on a 2.2 kW laboratory-scaled DFIG test bench.

Suggested Citation

  • Akrama Khan & Xiao Ming Hu & Mohamed Azeem Khan & Paul Barendse, 2020. "Doubly Fed Induction Generator Open Stator Synchronized Control during Unbalanced Grid Voltage Condition," Energies, MDPI, vol. 13(12), pages 1-13, June.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:12:p:3155-:d:373006
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    Citations

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    Cited by:

    1. Adolfo Dannier & Emanuele Fedele & Ivan Spina & Gianluca Brando, 2022. "Doubly-Fed Induction Generator (DFIG) in Connected or Weak Grids for Turbine-Based Wind Energy Conversion System," Energies, MDPI, vol. 15(17), pages 1-5, September.
    2. Ahmed Sobhy & Ahmed G. Abo-Khalil & Dong Lei & Tareq Salameh & Adel Merabet & Malek Alkasrawi, 2022. "Coupling DFIG-Based Wind Turbines with the Grid under Voltage Imbalance Conditions," Sustainability, MDPI, vol. 14(9), pages 1-20, April.
    3. Taufik Taluo & Leposava Ristić & Milutin Jovanović, 2021. "Dynamic Modeling and Control of BDFRG under Unbalanced Grid Conditions," Energies, MDPI, vol. 14(14), pages 1-22, July.

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