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Synchronization of DFIG output voltage to utility grid in wind power system

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  • Abo-Khalil, Ahmed G.

Abstract

This paper presents a new synchronization algorithm for grid connection of a doubly fed induction generator (DFIG) in a variable speed wind generation system. Stator flux-oriented vector control for back-to-back PWM converters in the DFIG rotor circuit is used for synchronization process. By controlling the rotor d-axis current, the magnitude of the stator EMF is adjusted to be equal to the grid voltage. PLL circuit is used to compensate for the phase shift between the stator EMF and the grid voltage. By controlling the turbine pitch angle, the generator speed is determined to adjust the stator frequency to be equal to the grid. The experimental results show a smooth synchronization and fast dynamic responses. Compared to the existing DFIG synchronization algorithms, the proposed method gives fast starting and can take only 2 cycles to be performed and has satisfactory performance and better robustness than existing methods.

Suggested Citation

  • Abo-Khalil, Ahmed G., 2012. "Synchronization of DFIG output voltage to utility grid in wind power system," Renewable Energy, Elsevier, vol. 44(C), pages 193-198.
    • Handle: RePEc:eee:renene:v:44:y:2012:i:c:p:193-198
    DOI: 10.1016/j.renene.2012.01.009
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    Citations

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    Cited by:

    1. Ahmed G. Abo-Khalil & Ali S. Alghamdi & Ali M. Eltamaly & M. S. Al-Saud & Praveen R. P. & Khairy Sayed & G. R. Bindu & Iskander Tlili, 2019. "Design of State Feedback Current Controller for Fast Synchronization of DFIG in Wind Power Generation Systems," Energies, MDPI, vol. 12(12), pages 1-26, June.
    2. Ademi, Sul & Jovanovic, Milutin, 2016. "Control of doubly-fed reluctance generators for wind power applications," Renewable Energy, Elsevier, vol. 85(C), pages 171-180.
    3. Mohd Zin, Abdullah Asuhaimi B. & Pesaran H.A., Mahmoud & Khairuddin, Azhar B. & Jahanshaloo, Leila & Shariati, Omid, 2013. "An overview on doubly fed induction generators′ controls and contributions to wind based electricity generation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 27(C), pages 692-708.
    4. Ahmed G. Abo-Khalil & Saeed Alyami & Khairy Sayed & Ayman Alhejji, 2019. "Dynamic Modeling of Wind Turbines Based on Estimated Wind Speed under Turbulent Conditions," Energies, MDPI, vol. 12(10), pages 1-25, May.
    5. 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.

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