6Rodriguez M,Abad G,Sarasola I,et al.Crowbar control algorithms for doubly fed induction generator during voltage dips[C].European Conference on Power Electronics and Applications,Spain,2005.
7Seman S,Niiranen J,Kanerva S,et al.Analysis of a 1.7 MVA doubly fed wind-power induction generator during power systems disturbances[C].Proceedings of NORPIE,Trondheim,Norway,2004.
8Niiranen J.Voltage dip ride through of doubly-fed generator equipped with active crowbar[C].The Nordic Wind Power Conference,G?teborg,Sweden,2004.
9Petersson A,Lundberg S,Thiringer T.A DFIG wind turbine ride-through system.Influence on the energy production[J].Wind Energy,2005,(8):251-263.
10Morren J,de Haan S W H.Ride through of wind turbines with doubly-fed induction generator during a voltage dip[J].IEEE Trans on Energy Conversion,2005,20(2):435-441.
