Patent ID: 8847424
Filing Date: 2014-09-30
Classification: F03D,F05B,H02K,Y02E

Abstract:
1. A wind turbine comprising: a wind turbine tower a nacelle provided on the wind turbine a wind turbine rotor hub rotatably mounted at the nacelle, the wind turbine rotor hub having at least one wind turbine blade mounted thereon a shaft coupled to the wind turbine rotor hub, and a generator coupled to the shaft, which generator comprises a rotor arranged rotatably in relation to a stator, which rotor comprises at least one superconducting rotor coil in a rotor chamber encapsulated by a rotor housing, and which stator comprises at least one stator coil of a conducting material and supported by a stator iron, where the stator coil is in a stator chamber encapsulated by a stator housing; the superconducting rotor coil and the stator coil being arranged to have interacting magnetic fields for inducing a current in the stator coil when the rotor is rotated, and where there is a rotor-stator gap between the rotor housing and the stator housing, wherein the stator housing comprises a stator inner shell facing the rotor housing, wherein the stator inner shell comprises at least one inner shell element which is arranged between the stator iron and a stator housing end plate.