4Yifan Tang, Longya Xu. A Flexible Active and Reactive Power Control Strategy for a Variable Speed Contant Frequency Generation System[J]. IEEE Trans. On Power Electronics, 1995, 10 (4) : 472-478.
5C. Brune, R. Spee, A. K. Wallance, Experimental Evaluation of a Variable-speed, Doubly-fed, doubly-fed Wind-power Generation System[ C]. Conference Record of the IEEE Industry Application Conference 28th LAS Annual Meeting, 1993: 480-487.
6L. H. Hansen, L. Helle, F. Blaabjerg, et al. Conceptual Survey of Generators and Power Electronics for Wind Turbines [ R ]. Riso National Laboratory, Roskilde, Denmark, December, 2001.
