1. 1. M. Tsili and S. Papathanassiou, “A review of grid code technical requirements for wind farms,” IET Renew. Power Gener., vol. 3, no. 3,pp. 308–332, Sep. 2009.
   2. H. Geng, G. Yang, D. Xu, and B. Wu, “Unified power control for PMSG based WECS during different grid situations,” IEEE Trans. Energy Convers.,vol. 26, no. 3, pp. 822–830, Sep. 2011.
   3. R. Cardenas, R, Pena, S. Alepuz, and G. Asher, “Overview of control system for the operation of DFIGs in wind energy application,” IEEE Trans. Ind. Electron., vol. 60, no. 7, pp. 2776–2798, Jul. 2013.
   4. J. Lopez, P. Sanchis, X. Roboam, and L. Marroyo, “Dynamic behavior of the doubly fed induction generator during three-phase voltage dips,” IEEE Trans. Energy Convers., vol. 22, no. 3, pp. 709–717, Sep. 2007.
   5. J. Lopez, E. Gubia, P. Sanchis, X. Roboam, and L. Marroyo, “Wind turbines based on doubly fed induction generator under asymmetrical voltage dips,” IEEE Trans. Energy Convers., vol. 23, no. 1, pp. 321–330,Mar. 2008.
   6. X. Dawei, R. Li, P. J. Tavner, and S. Yang, “Control of a doubly fed induction generator in a wind turbine during grid fault ride through,” IEEE Trans. Energy Convers., vol. 21, no. 3, pp. 652–662, Sep. 2006.
   7. H. J. Boenig and D. A. Paice, “Fault current limiter using a superconducting coil,” IEEE Trans. Magn., vol. 19, no. 3, pp. 1051–1053, May 1983.
   8. A. Abramovitz and K. Smedley, “Survey of solid state fault current limiter,” IEEE Trans. Power Electron., vol. 27, no. 6, pp. 2770–2782, Jun. 2012.
   9. E. R. Lee, S. Lee, C. Lee, H. J. Suh, D. K. Bae, H. M. Kim, Y. S. Yoon, and T. K. Ko, “Test of DC reactor type fault current limiter using SMES magnet for optimal design,” IEEE Trans. Appl. Supercond., vol. 12, no. 1,pp. 850–853, Mar. 2002.
   10. LiYang, Z. Xu, J.Ostergaard, Z.Y. Dong, andK. P.Wong, “Advanced control strategy of DFIG wind turbines for power system fault ride through,” IEEE Trans. Power Syst., vol. 27, no. 2, pp. 713–722, May 2012.