6Hofmann W, Thieme A. Control of a double-fed induction generator wind-power plants[J]. Proceedings of power quality , 1998, (5):275-282.
7Mitsutoshi Yamaoto, Osamu Motoyoshi. Active and reactive power control for doubly-fed wound rotor induction generator[J]. IEEE. Trans.on Power Electronics , 1991, 6(4): 624-629.
8Yifan Tang, Longya Xu. A flexible active and reactive power control strategy for a variable speed constant frequency generating system[J]. IEEE Trans, on Power Electronics , 1995, 10(4): 472-478.
9Hopfensperger B, Lakin R A. Stator flux oriented control of a cascaded doubly-fed induction machine[J]. IEE Proc-Electr. Power Application, 1999, 146(6): 597-605.
10Hopfensperger B. Stator-flux oriented control of a doubly-fed induction machine with and without position encoder[J]. IEE Proc.Electr. Power Appl., 2000, 147(4): 241-250.