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Impact of symmetrical short-circuit fault on doubly-fed induction generator controller

ABSTRACT The impact of environmental degradation and the energy crisis, countries are vigorously developing renewable power generation technology. Among renewable energy sources, wind energy is a clean, convenient, and easy to access, which have become the priority nowadays. The doubly-fed induction generators (DFIG) are widely used in modern wind power plants because of their robustness in variable speed and frequency conversion. The transient characteristics of this kind of generator at fault are always the focus of research. In this paper, the disturbance at machine-side converter (MSC) and grid-side converter (GSC) in the case of symmetrical short-circuit fault is studied. The value of transient time, maximum current, steady-state, and voltage drop at the GSC and MSC of DFIG is attenuated during symmetrical disorder. The simulation results show the robustness during the three-phase short-circuit disorder. The change of short-circuit parameters in the MSC and the GSC deliver reliable system’s fault results and parameter robustness differences of selected parameters. The short-circuit parameter calculation shows 14%, 44%, 75% and 15% at the grid-side controller’s outcomes, respectively. The analysis and simulation results help to understand and improve the performance of controllers to gain the present and future wind energy-efficient conversion systems (WECS).