In case of three-phase short circuit fault occurring at the terminal of a doubly-fed induction generator ( DFIG ), the rotor current characters of DFIG are analyzed from the viewpoint of the flux linkage, and the expression of the rotor current is deduced together with the estimated expression of the maximum rotor current. Based on above analysis, the max rotor currents and their appearing times with different Crowbar resistances are found, and the appropriate Crowbar resistance value is set for the 1.5 MW DFIG.

Simulation and Analysis on Low Voltage Ride.PDF

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