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This paper presents a cost-effective scheme to improve the fault ride through capability of wind turbines with doubly fed induction generators. As an alternative to using crowbar, the proposed scheme includes the stator side series-connected braking resistors, dc-link chopper and coordinated control strategy of the whole system. The proposed scheme enable the rotor converter always be connected to...
This paper presents a vector control of grid-connected three-level neutral point clamped voltage source converter (3L-NPC-VSC) connecting doubly-fed induction generator (DFIG) drives for variable-speed wind power generation. The control algorithm of the grid-connected 3L-NPC-VSC applies the concepts of the decoupled vector control method, which provides independent control active and reactive power...
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