WIND MILL POWER FLOW CONTROL WITH DUMP LOAD AND POWER CONVERTER

摘要

A wind mill apparatus for generating electric power to a grid point of an electric network, the apparatus comprising a wind rotor and connected thereto an electric generator, and an electric multiphase ac link connecting the generator the grid point, the link comprising a first current path comprising a switchgear, a second current path comprising a dc link containing a first converter connected to the generator, a second converter connected to the grid point, and capacitor means connected between the conductors of the dc link. The ac link further comprises a connectable multiphase dump load for blocking during a fault condition on the network the reactive power flow in the ac link, yet providing a reduced transfer of active power.