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This paper deals with control of wind turbine connected to the grid through   the back-to-back converter in case of unbalanced grid voltages. The   motivation for this research has been found in recent transmission and   distribution grid code, which demand modern wind turbines to stay connected   to the grid and supply the highest possible apparent power during the grid   disturbances. In order to comply with these requirements we proposed improved   dual vector current controller to deal with the unbalance imposed by the   electrical grid. Controller provides injection of active and reactive power   to the grid, even if the voltages are lower than the nominal one. The results   are validated using low power prototype and contemporary hardware-in-the-loop   emulation platform. In both cases the controller is based on TMS320F2812 DSP.   [Projekat Ministarstva nauke Republike Srbije, br. III 042004 and by the   Provincial Secretariat for Science and Technological Development of AP   Vojvodina under contract No. 114-451-3508/2013-04

Fault ride-through capability of wind turbine connected to the grid in case of unbalanced voltages