2Jacobina C B, Correa M B de R, Ribeiro R L A et al. AC/AC converters with a reduced number of switches[C]. Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting.Conference Record of the 2001 IEEE, 2001,(3): 1755-1762.
4Kazerani M. A direct AC/AC converter based on current-source converter modules[C]. Power Electronics, IEEE Transactions, 2003,(18): 1168-1175.
5Kawabata Y, Morine Y, Oka T et al. Variable speed constant fiequency power generating system by the use of rotor excitation of induction machine[C]. Power Conversion Conference, 2002. PCC Osaka 2002. Proceedings, 2002,(1): 328-333.
6Tapia A, Tapia G, X.Ostolaza J et al. Modeling and control of a wind turbine driven doubly fed induction generator. Energy Conversion[J].IEEE Transactions. 2003,(18): 194-204.
7Hofmann W, Okafor E Optimal power utilization with doubly-fed full-controlled induction generator[C]. African Conference in Africa,2002. IEEE AFRICON. 6th, 2-4 Oct. 2002,2:693 - 698.
8Hofmann W, Okafor E Optimal control of doubly-fed full-controlled induction wind generator with high efficiency[C]. Industrial Electronics Society, 2001. IECON '01. The 27th Annual Conference of the IEEE, 29 Nov.-2 Dec, 2001,2: 1213-1218.