Voltage Enhancement on DFIG Based Wind Farm Terminal During Grid Faults

Authors

  • P. D. Chung Faculty of Electrical Engineering, The University of Danang-University of Science and Technology, Danang, Vietnam
Volume: 9 | Issue: 5 | Pages: 4783-4788 | October 2019 | https://doi.org/10.48084/etasr.3117

Abstract

This paper proposes a method of retaining high enough voltage on the terminal of DFIG wind turbines during a fault interval on the connected grid. This method is developed by the ideal of dynamic voltage restorer equipment and was applied to a wind turbines group. The DC-link and the grid side converter of the first DFIG wind turbine in this group are utilized to support the other wind turbines. The converter is connected to a transformer, which is in series with the wind turbine group and the connected line, during an external fault. At the DC-link of the back-to-back converter of each DFIG wind turbine, a DC chopper is equipped to dissipate excessive active power during the fault interval. Moreover, the controllers of all wind turbines are modified to support all wind turbines in the group. The method is verified by MATLAB/Simulink. Simulation results implied that the proposed method can retain a high enough voltage on the terminal of DFIG while preventing overcurrent on the rotor side.

Keywords:

DFIG, DVR, fault-ride-through capability, voltage enhancement, wind turbine

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References

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How to Cite

[1]
P. D. Chung, “Voltage Enhancement on DFIG Based Wind Farm Terminal During Grid Faults”, Eng. Technol. Appl. Sci. Res., vol. 9, no. 5, pp. 4783–4788, Oct. 2019.

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