Solutions for Voltage SAG in a Doubly Fed Induction Generator Based Wind Turbine: A Review

Harnessing energy from the wind is a conventional method. Innovations have been made in the mechanical structure for the effective production of energy. To increase the electrical efficiency, losses due to fault in the system must be reduced. One such fault is the Voltage sag/dip. This paper throws light on the complexities of the voltage sag in Doubly Fed Induction Generator (DFIG) wind turbine and how this fault has been rectified over a period of time by different researchers. A brief description about the problems encountered and the feasible measures taken is presented.