Patent ID: 8729722
Filing Date: 2014-05-20
Classification: F03D,F05B,H02K,Y02E

Abstract:
1. A wind turbine comprising a generator with a generator rotor and a stator, with a first gap-between the stator and a first surface of the generator rotor and with magnets and electro-conductive windings at opposite sides of first gap, wherein the wind turbine comprises one or more distance measurement devices configured to measure the distance (L′) between a second surface of the rotor and a stationary part of the generator free from magnets and windings at a radial distance from the first gap, wherein the second surface of the rotor facing the stationary generator surface forms a second gap, wherein the second gap has a length directly corresponding to the length of the first gap, wherein the one or more distance measurement devices are arranged to measure the radial length of the second gap.