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Low Voltage Ride-through in DFIG Wind Generators by Controlling the Rotor Current without Crowbars

Author

Listed:
  • Jaime Rodríguez Arribas

    (Department of Electrical Engineering, ETS Ingenieros Industriales, Universidad Politécnica de Madrid, Jose Gutiérrez Abascal 2, 28006 Madrid, Spain)

  • Adrián Fernández Rodríguez

    (Institute for Research in Technology, Pontifical Comillas University, Alberto Aguilera 23, 28015 Madrid, Spain)

  • Ángel Hermoso Muñoz

    (Department of Electrical Engineering, ETS Ingenieros Industriales, Universidad Politécnica de Madrid, Jose Gutiérrez Abascal 2, 28006 Madrid, Spain)

  • Carlos Veganzones Nicolás

    (Department of Electrical Engineering, ETS Ingenieros Industriales, Universidad Politécnica de Madrid, Jose Gutiérrez Abascal 2, 28006 Madrid, Spain)

Abstract

Among all the different types of electric wind generators, those that are based on doubly fed induction generators, or DFIG technology, are the most vulnerable to grid faults such as voltage sags. This paper proposes a new control strategy for this type of wind generator, that allows these devices to withstand the effects of a voltage sag while following the new requirements imposed by grid operators. This new control strategy makes the use of complementary devices such as crowbars unnecessary, as it greatly reduces the value of currents originated by the fault. This ensures less costly designs for the rotor systems as well as a more economic sizing of the necessary power electronics. The strategy described here uses an electric generator model based on space-phasor theory that provides a direct control over the position of the rotor magnetic flux. Controlling the rotor magnetic flux has a direct influence on the rest of the electrical variables enabling the machine to evolve to a desired work point during the transient imposed by the grid disturbance. Simulation studies have been carried out, as well as test bench trials, in order to prove the viability and functionality of the proposed control strategy.

Suggested Citation

  • Jaime Rodríguez Arribas & Adrián Fernández Rodríguez & Ángel Hermoso Muñoz & Carlos Veganzones Nicolás, 2014. "Low Voltage Ride-through in DFIG Wind Generators by Controlling the Rotor Current without Crowbars," Energies, MDPI, vol. 7(2), pages 1-22, January.
    • Handle: RePEc:gam:jeners:v:7:y:2014:i:2:p:498-519:d:32415
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    References listed on IDEAS

    as
    1. Hu, Jiabing & He, Yikang, 2011. "DFIG wind generation systems operating with limited converter rating considered under unbalanced network conditions – Analysis and control design," Renewable Energy, Elsevier, vol. 36(2), pages 829-847.
    2. Jun Yao & Qing Li & Zhe Chen & Aolin Liu, 2013. "Coordinated Control of a DFIG-Based Wind-Power Generation System with SGSC under Distorted Grid Voltage Conditions," Energies, MDPI, vol. 6(5), pages 1-21, May.
    3. Zaijun Wu & Chanxia Zhu & Minqiang Hu, 2013. "Improved Control Strategy for DFIG Wind Turbines for Low Voltage Ride Through," Energies, MDPI, vol. 6(3), pages 1-17, February.
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    Cited by:

    1. Victor F. Mendes & Frederico F. Matos & Silas Y. Liu & Allan F. Cupertino & Heverton A. Pereira & Clodualdo V. De Sousa, 2016. "Low Voltage Ride-Through Capability Solutions for Permanent Magnet Synchronous Wind Generators," Energies, MDPI, vol. 9(1), pages 1-19, January.
    2. Oscar Barambones & Jose A. Cortajarena & Patxi Alkorta & Jose M. Gonzalez De Durana, 2014. "A Real-Time Sliding Mode Control for a Wind Energy System Based on a Doubly Fed Induction Generator," Energies, MDPI, vol. 7(10), pages 1-22, October.
    3. Attya, A.B. & Anaya-Lara, O. & Leithead, W.E., 2018. "Novel concept of renewables association with synchronous generation for enhancing the provision of ancillary services," Applied Energy, Elsevier, vol. 229(C), pages 1035-1047.
    4. Flávio Oliveira & Arthur Amorim & Lucas Encarnação & Jussara Fardin & Marcos Orlando & Selênio Silva & Domingos Simonetti, 2015. "Enhancing LVRT of DFIG by Using a Superconducting Current Limiter on Rotor Circuit," Energies, MDPI, vol. 9(1), pages 1-12, December.
    5. Lei Chen & Xiude Tu & Hongkun Chen & Jun Yang & Yayi Wu & Xin Shu & Li Ren, 2016. "Technical Evaluation of Superconducting Fault Current Limiters Used in a Micro-Grid by Considering the Fault Characteristics of Distributed Generation, Energy Storage and Power Loads," Energies, MDPI, vol. 9(10), pages 1-21, September.

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