SYSTEM FOR CONTROLLING PHASE SHIFTING OF SUPERCONDUCTING ELECTRIC MACHINES

A wind turbine (10) includes a superconducting generator (24) having an armature and a superconducting field winding set (110). The armature includes at least one multiphase armature winding set (108) having a plurality of armature windings. The superconducting field winding set (110) is separated by a gap (105) from the armature. The superconducting field winding set includes a plurality of field windings, wherein one of the armature winding set and superconducting field winding set is connectable to rotate with a rotating component of the wind turbine and another of the armature and the superconducting field winding set being non-rotating. The wind turbine also includes a controllable power converter (107, 109, 111) coupled to the at least one multiphase armature winding set and a controller configured to control switching operations of the controllable power converter to effect a phase shift (Φ1, Φ2, Φ3) among the plurality of armature windings.