Patent ID: 8403786
Filing Date: 2013-03-26
Classification: F03D,F05B,F16C,F16H,H02K,Y02E,Y02P

Abstract:
1. A wind turbine with a drive train placed partly or entirely in a nacelle of said wind turbine, the drive train comprising: an epicyclical gearbox including at least one gear stage comprising a plurality of planet gears meshing with at least one of a sun gear and an annulus gear, the gearbox operating to speed-up the rotation of a rotor of the wind turbine, as applied to at least one generator of the wind turbine; and at least one locally radial self tracking bearing for enabling rotation of the rotor in relation to a nacelle structure of the nacelle, wherein the locally radial self tracking bearing comprises bearing elements that locally transfer loads in both radial directions between one or more bearing rings directly or indirectly connected to the rotor and one or more bearing rings directly or indirectly connected to the nacelle structure.