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Enhancement of LVRT Capability in DFIG-Based Wind Turbines with STATCOM and Supercapacitor

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  • M. Kenan Döşoğlu

    (Electrical Electronics Engineering Department, Faculty of Engineering, Duzce University, Duzce 81620, Turkey)

Abstract

Overvoltage and overcurrent resulting from various faults cause instability in Doubly Fed Induction Generator (DFIG)-based wind turbines connected to a grid. The grid code requirement must be met during faults to minimize the effect of these problems. Low Voltage Ride Through (LVRT) capability is used to meet the grid code requirement. It is important to use coordinate control for transient states in LVRT capability. This study aimed to improve the stator dynamics for ease of calculation and the rotor dynamic model by damping oscillations caused by balanced and unbalanced faults on the grid side. For this, electromotive force (emf) models were developed for stator and rotor dynamic modeling. Furthermore, for the coordinate control of the DFIG, models were developed for a lookup-table-based supercapacitor and a decoupled Static Synchronous Compensator (STATCOM). Using these models, analyses of three-phase and two-phase faults were conducted. Following different balanced and unbalanced faults within the grid, the system was stabilized in a short time, and the oscillations occurring during the faults were quickly damped using the LVRT models developed in this study.

Suggested Citation

  • M. Kenan Döşoğlu, 2023. "Enhancement of LVRT Capability in DFIG-Based Wind Turbines with STATCOM and Supercapacitor," Sustainability, MDPI, vol. 15(3), pages 1-18, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:3:p:2529-:d:1052506
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    References listed on IDEAS

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    1. Zhong Zheng & Geng Yang & Hua Geng, 2013. "Coordinated Control of a Doubly-Fed Induction Generator-Based Wind Farm and a Static Synchronous Compensator for Low Voltage Ride-through Grid Code Compliance during Asymmetrical Grid Faults," Energies, MDPI, vol. 6(9), pages 1-22, September.
    2. Saad, Naggar H. & Sattar, Ahmed A. & Mansour, Abd El-Aziz M., 2015. "Low voltage ride through of doubly-fed induction generator connected to the grid using sliding mode control strategy," Renewable Energy, Elsevier, vol. 80(C), pages 583-594.
    3. Kyaw, Min Min & Ramachandaramurthy, V.K., 2011. "Fault ride through and voltage regulation for grid connected wind turbine," Renewable Energy, Elsevier, vol. 36(1), pages 206-215.
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