The penetration level of wind power plant has increased now a day. Doubly -Fed Induction Generators (DFIG) based wind turbine system has become a more popular because of their advantages over the fixed speed wind turbine. To ensure the power system stabilitya special grid codes provided by several utility to wind farm producers. All these grid code requirements, specifically fault ride through (FRT) are a challenge for wind turbine producers. This paper presents a technical review of improvement of fault ride-through capability of DFIG connected wind turbine systems.
Keywords-Mathematical model of DFIG; fault ride-through (FRT)/ low voltage ride-through(LVRT)requirement; impact of FRT/LVRT on wind farm; techniques to improve FRT/LVRT grid code requirement.I.
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