Dynamic evaluation of two configurations for a hybrid DFIG-based wind turbine integrating battery energy storage system

Authors

  • Raúl Sarrias-Mena,

    1. Research Group in Electrical Technologies for Sustainable and Renewable Energy (PAIDI-TEP-023), Department of Electrical Engineering, EPS Algeciras, University of Cadiz, Algeciras, Cádiz, Spain
    Search for more papers by this author
  • Luis M. Fernández-Ramírez,

    Corresponding author
    1. Research Group in Electrical Technologies for Sustainable and Renewable Energy (PAIDI-TEP-023), Department of Electrical Engineering, EPS Algeciras, University of Cadiz, Algeciras, Cádiz, Spain
    • Correspondence: Luis M. Fernández, Research Group in Electrical Technologies for Sustainable and Renewable Energy (PAIDI-TEP-023), Department of Electrical Engineering, EPS Algeciras, University of Cadiz, Avda. Ramón Puyol, s/n, 11202 Algeciras, Cádiz, Spain.

      E-mail: luis.fernandez@uca.es

    Search for more papers by this author
  • Carlos Andrés García-Vázquez,

    1. Research Group in Electrical Technologies for Sustainable and Renewable Energy (PAIDI-TEP-023), Department of Electrical Engineering, EPS Algeciras, University of Cadiz, Algeciras, Cádiz, Spain
    Search for more papers by this author
  • Francisco Jurado

    1. Research Group in Research and Electrical Technology (PAIDI-TEP-152), Department of Electrical Engineering, EPS Linares, University of Jaen, Linares, Jaén, Spain
    Search for more papers by this author

Abstract

Hybrid systems comprising battery energy storage systems (BESSs) and wind power generation entail considerable advances on the grid integration of renewable energy. Doubly fed induction generators (DFIGs) stand out among different wind turbine (WT) technologies. On the other hand, electrochemical batteries have proved to be valid for these purposes. In this paper, a comparative analysis is carried out between two alternative configurations for hybrid WT-BESS systems, where the BESS is connected either outside or inside the DFIG. The modeling of these two configurations and the control systems applied for achieving the coordinate operation of the energy sources (DFIG and batteries) are illustrated. The hybrid systems under study are evaluated by simulation under normal operation (wind speed fluctuations and grid demand changes) and grid faults. Simulation results show that both configurations improve the grid integration capability of the WT, although the configuration with external BESS presents better results since it can provide additional active/reactive power injection. Copyright © 2014 John Wiley & Sons, Ltd.

Ancillary