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This article proposes an event-triggered sliding mode control (ETSMC)-based fault ride-through (FRT) scheme for doubly fed inductor generator (DFIG)-based wind energy systems. The design aims at mitigating dynamic instabilities resulting from grid faults by properly regulating the dc-link voltage with support from a supplemental energy storage (super-capacitor). The high-density power support from the super-capacitor is efficiently facilitated by the dual active bridge converter (DABC) because of its high voltage conversion ratio and very low core loss. The event-triggered SMC approach allows ...

This paper proposes a novel fault ride-through (FRT) scheme for doubly fed inductor generator (DFIG)-based wind turbines. The approach combines an event-triggered sliding mode control (ETSMC) with a super-capacitor and a high-frequency magnetic linked dual active bridge converter (DABC). The design aims to mitigate grid fault induced transient instability by properly regulating the dc-link voltage to near its pre-fault level. The event-based SMC approach allows updating the control input only when certain stability conditions are violated, thus reducing the computational burden and mitigating ...