Modeling Of DFIG and Improving the LVRT Capability Of System Using Crowbar And Battery Energy Storage System

  T. Santhiya,  S. Nithya

As the wind power penetration continues to increase, wind turbines are required to provide Low Voltage Ride-Through (LVRT) capability. To improve the low voltage ride-through (LVRT) capability of a wind turbine (WT) with Doubly Fed induction generator (DFIG), this paper deals with the implementation of a new model on the rotor side for enhancing the voltage dip during faults. The method comprises of auto switching Crowbar protection on to the rotor side for the enhancement of voltage and also a battery energy storage system (BESS) in the dc link side to reduce the ripples by absorbing the redundant power stored in the DC link capacitor. Generally , premature removal of crowbar does not achieve good results and post late removal will make the machine to absorb more reactive power from the grid so, an automatic Crowbar protection is been employed which automatically works according to the requirement. The combined protection and control strategy is being proposed in the simulation results.

Keywords- DFIG, BESS, LVRT, Crow bar, DC link Capacitor

Unique Identification Number - IJEDR1504064
Page Number(s) - 408-413
Pubished in - Volume 3 | Issue 4 | November 2015
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  T. Santhiya,  S. Nithya,   "Modeling Of DFIG and Improving the LVRT Capability Of System Using Crowbar And Battery Energy Storage System", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.3, Issue 4, pp.408-413, November 2015, Available at :http://www.ijedr.org/papers/IJEDR1504064.pdf