Abstract: A wind turbine that includes a rotor, a generator, and a tower is described. The rotor includes a rotor hub and one or more rotor blades. The generator includes a generator stator and a generator rotor. The rotor hub is rotatably mounted on a frame and the generator and tower are arranged on the same side of the rotor. The generator stator is attached to the frame substantially in a plane perpendicular to the rotor's rotational axis, and the generator rotor is rotatably mounted on a part of the generator stator.

Abstract: A wind turbine that includes a rotor and a generator is described. The rotor includes a rotor hub that is rotatably mounted on a frame and one or more rotor blades. The generator includes a generator stator and a generator rotor with a carrying structure that carries magnetic or electromagnetic elements. One or more circumferentially arranged substantially axial protrusions that extend into the generator rotor carrying structure are attached to the rotor. Flexible couplings are arranged between one or more of the axial protrusions and the carrying structure.

Abstract: A wind turbine lubrication system comprising a pump for pumping lubricant through a lubrication circuit, said pump being driven by a power-take-off from the drive train of the wind turbine, characterized in that said pump for pumping lubricant drives at least a first hydraulic motor providing mechanical power to a first wind turbine auxiliary component.

Abstract: A wind turbine is described. The turbine includes a hub with one or more blades that rotatably mounted on a frame and operatively coupled to a shaft. The shaft is provided at least partially internally to the frame, and a center piece from which a plurality of spokes extends substantially radially is mounted on the shaft. The hub is provided with a plurality of circumferentially arranged axial protrusions. Flexible elements are arranged to connect the spokes to the protrusions.

Abstract: A wind turbine that includes a rotor and a generator is described. The rotor includes a rotor hub that is rotatably mounted on a frame and one or more rotor blades. The generator includes a generator stator and a generator rotor with a carrying structure that carries magnetic or electromagnetic elements. One or more circumferentially arranged substantially axial protrusions that extend into the generator rotor carrying structure are attached to the rotor. Flexible couplings are arranged between one or more of the axial protrusions and the carrying structure.

Abstract: The invention relates to a method of aligning a wind turbine component with a wind turbine rotor hub, comprising providing the component with a support comprising at least one adjustable element and adjusting said at least one element to align the wind turbine component. The invention further relates to a system for aligning a wind turbine component with a wind turbine rotor hub comprising a support with at least one adjustable element supporting said wind turbine component, such that said wind turbine component can be aligned by adjusting said at least one element.

Abstract: A wind turbine that includes a rotor and a generator is described. The rotor includes a rotor hub that is rotatably mounted on a frame and one or more rotor blades. The generator includes a generator stator and a generator rotor with a carrying structure that carries magnetic or electromagnetic elements. One or more circumferentially arranged substantially axial protrusions that extend into the generator rotor carrying structure are attached to the rotor. Flexible couplings are arranged between one or more of the axial protrusions and the carrying structure.

Abstract: A wind turbine is described. The turbine includes a hub with one or more blades. The hub is rotatably mounted on a frame and operatively coupled to a shaft through a coupling plate mounted on the shaft. The shaft is provided at least partially internally to the frame, and the shaft is a substantially tubular hollow shaft.

Abstract: A wind turbine is described. The turbine includes a hub with one or more blades. The hub is rotatably mounted on a frame and operatively coupled to a shaft through a coupling plate mounted on the shaft. The shaft is provided at least partially internally to the frame, and the shaft is a substantially tubular hollow shaft.

Abstract: The present invention refers to a method of reducing torsional oscillations in the power train of a wind turbine in the event of grid loss. According to the method, after the grid loss, a braking torque is applied to the power train during a period of time and said period of time is determined as a function of the torsional resonance frequency of the power train.

Abstract: A wind turbine is described. The turbine includes a hub with one or more blades that rotatably mounted on a frame and operatively coupled to a shaft. The shaft is provided at least partially internally to the frame, and a center piece from which a plurality of spokes extends substantially radially is mounted on the shaft. The hub is provided with a plurality of circumferentially arranged axial protrusions. Flexible elements are arranged to connect the spokes to the protrusions.

Abstract: A wind turbine that includes a rotor and a generator is described. The rotor includes a rotor hub that is rotatably mounted on a frame and one or more rotor blades. The generator includes a generator stator and a generator rotor with a carrying structure that carries magnetic or electromagnetic elements. One or more circumferentially arranged substantially axial protrusions that extend into the generator rotor carrying structure are attached to the rotor. Flexible couplings are arranged between one or more of the axial protrusions and the carrying structure.

Abstract: A method for determining the evolution of torque of at least one rotatable shaft and the resulting fatigue damage to different power train components is provided for design and/or maintenance operations in a wind turbine that comprises the steps of determining torque (Tg) at a high speed shaft of the power train; determining moment of inertia (Ig) at the high speed shaft; determining angular acceleration (?g) at the high speed shaft; and determining torque (Tr) at the low speed shaft of the power train through the formula Tr=(Tg?Ig ?g)·i. A rainflow-counting algorithm may be applied to the value of the torque (Tr) at the low speed shaft for determining the number of cycles at ranges of torque for every torque mean value.

Abstract: A wind turbine that includes a rotor, a generator, and a tower is described. The rotor includes a rotor hub and one or more rotor blades. The generator includes a generator stator and a generator rotor. The rotor hub is rotatably mounted on a frame and the generator and tower are arranged on the same side of the rotor. The generator stator is attached to the frame substantially in a plane perpendicular to the rotor's rotational axis, and the generator rotor is rotatably mounted on a part of the generator stator.

Abstract: A wind turbine that includes a hub carrying one or more blades, a generator, and a shaft operatively coupled to the hub through a first coupling is described. In operation, the rotor of the generator is directly driven by the shaft. The hub is rotatably mounted on a frame, and the shaft is mounted at least partially internally in the frame. The coupling between the shaft and the hub is adapted to transmit the torque about the hub's rotational axis from the hub to the shaft while substantially limiting the transmission of other loads. The generator is arranged in such a way that the torque about the shaft's rotational axis is transmitted from the shaft to the rotor of the generator while substantially limiting the transmission of other loads from the shaft to the generator.

Abstract: A wind turbine is described. The turbine includes a hub with one or more blades. The hub is rotatably mounted on a frame and operatively coupled to a shaft through a coupling plate mounted on the shaft. The shaft is provided at least partially internally to the frame, and the shaft is a substantially tubular hollow shaft.

Abstract: A wind turbine comprising a hub carrying one or more blades, a frame, and a planetary gearing for transmitting the torque of the hub, the hub being rotatably mounted upon the frame at or near a distal end thereof, wherein the torque of the hub is introduced into the planetary gearing through a planet carrier of the gearing, the planet carrier being located at or near the distal end of said frame.

Abstract: A wind turbine lubrication system comprising a pump for pumping lubricant through a lubrication circuit, said pump being driven by a power-take-off from the drive train of the wind turbine, characterised in that said pump for pumping lubricant drives at least a first hydraulic motor providing mechanical power to a first wind turbine auxiliary component.

Abstract: The invention relates to a method of aligning a wind turbine component with a wind turbine rotor hub, comprising providing the component with a support comprising at least one adjustable element and adjusting said at least one element to align the wind turbine component. The invention further relates to a system for aligning a wind turbine component with a wind turbine rotor hub comprising a support with at least one adjustable element supporting said wind turbine component, such that said wind turbine component can be aligned by adjusting said at least one element.

Abstract: The present invention refers to a method of reducing torsional oscillations in the power train of a wind turbine in the event of grid loss. According to the method, after the grid loss, a braking torque is applied to the power train during a period of time and said period of time is determined as a function of the torsional resonance frequency of the power train.