A comprehensive review of fault ride-through capability of wind turbines with grid-connected doubly fed induction generator

An overview of different strategies applied to enhance the fault Ride-Through (FRT) ability of the Doubly Fed Induction Generators (DFIGs)-based Wind Turbines (WTs) during transient state is introduced in the study. Different FRT strategies dependent on (a) additional protection circuit's establishment, (b) reactive power injecting devices installation, and (c) various control approaches have been proposed in the literature. Typically, during disturbance in the grid to restrict the generated rotor overcurrent and undesirable Direct Current (DC)-link overvoltage, the protection circuits or control structures are connected. Concurrently, to improve the transient performance of the DFIG-based WT, the reactive power injecting devices outperform any deficiency of the reactive power and consequently bound the DC-link voltage and current in the rotor. Actually, during the transient state without damaging its operating strategy, many research findings show a productive DFIG protection. Along these lines, this study centers around underscoring the present status of the rotor overcurrent and DC-link overvoltage protection solutions, for example, the crowbar and its related protection circuits, fault current limiter, the reactive power injecting devices, for example, the static synchronous compensators, static var compensator, and dynamic voltage restorer. Based on the linear and nonlinear control strategies, some control approaches for constraining the inrush rotor currents are exhibited. In addition, the high-voltage ride-through capability of DFIG-based WTs is also exhibited. This survey can be used as a manual for giving a data source and a selection guide on FRT of DFIG-based WT system for designers, application engineers, and researchers.