Experimental Study of Fault Impact on Grid Connected DFIG Driven Wind Turbine

Renewable energy is expanding rapidly with the goal of carbon neutrality, and research is focusing on incorporating solar, wind, and other renewable resources for producing power. The wind is a popular energy source, and among the varying speed drives, the Doubly Fed Induction Generator (DFIG) has surpassed its competitors. The functioning of a DFIG-driven wind system in a grid-connected mode is investigated in this paper, along with the impact of symmetrical and asymmetrical fault analysis. A 2.5KW rated DFIG hardware arrangement is controlled by a Field Programmable Gate Array (FPGA) to carry out the experimental study. The controller is interfaced to the three bus distribution networks simulated in the Real-Time Digital Simulator (RTDS) via a 4- quadrant Power Amplifier (PA) and the fault is introduced at the bus connected before the step-down transformer. According to the observations, the asymmetrical fault has a negative impact on the DFIG wind system's Fault Ride Through (FRT) performance.