A WIND TURBINE GENERATOR COMPRISING AN APPARATUS FOR ELECTRIC POWER CONVERSION

A wind turbine generator (-) comprising an electric generator () and an apparatus (-) for electric power conversion, wherein the apparatus (-) comprises: a first power converter () for converting AC power from the electric generator () to DC power; a second power converter () for converting DC power from the first power converter () to AC power to be provided to an electric power grid (); a DC link () comprising a positive rail () and a negative rail () connecting the first power converter () to the second power converter (); and an energy storage arrangement (-) comprising multiple supercapacitors () connected or connectable to the DC link () so as to support the operation of one or more of the first and second power converters (). The energy storage arrangement (-) comprises one or more DC-to-DC converters () for connecting one or more of the supercapacitors () of the energy storage arrangement (-) to the DC link ().