Abstract: A wind turbine comprising, a tower, a nacelle mounted on the tower, and a rotor for harvesting wind energy by rotation of the rotor about a rotor axis extending in a vertical center plane. The nacelle comprises a main unit and two auxiliary units each housing a first and a second operative component. To obtain a combination of reuse of components and a good weight distribution, the first operative components in the first and second auxiliary units have the same distance to the center plane and the second operative components in the first and second auxiliary units have different distances to the center plane.

Abstract: A wind turbine comprising, a tower, a nacelle mounted on the tower, and a rotor defining a rotor axis extending in a vertical center plane and configured for harvesting wind energy by rotation of blades in a rotor rotation direction about the rotor axis. The nacelle comprises a rotor-supporting assembly forming a load path from the rotor to the tower and configured for receiving rotor torque caused by the rotation of the rotor. To reduce loading of the tower and potentially provide a cheaper construction, the nacelle has a center of gravity which is offset from the center plane in a direction relative to the rotor rotation direction to counteract the rotor torque.

Abstract: A wind turbine generator (10) includes a tower (12), a nacelle (14) rotatably mounted to the tower (12), the nacelle having a longitudinal axis and being configured to align the longitudinal axis with the direction of the incoming wind during operation of the wind turbine generator (10), one or more heat-generating components (22) housed in the wind turbine generator (10), and a containerized HVAC module (26) mounted on a roof (31) of the nacelle (14) and operably connected to the one or more heat-generating h components (22) for cooling the heat-generating components (22). The module (26) includes a shipping container (30) having a floor (32), a roof (34), a pair opposed longer side walls (36), a pair of opposed shorter end walls (38), and a longitudinal axis, the longitudinal axis of the shipping container (30) being oriented generally perpendicular to the longitudinal axis of the nacelle (14), the shipping container (30) having at least one heat exchanger (40) therein.

Abstract: A wind turbine generator (10) includes a tower (12), a nacelle (14) rotatably mounted to the tower (12), the nacelle having a longitudinal axis and being configured to align the longitudinal axis with the direction of the incoming wind during operation of the wind turbine generator (10), one or more heat-generating components (22) housed in the wind turbine generator (10), and a containerized HVAC module (26) mounted on a roof (31) of the nacelle (14) and operably connected to the one or more heat-generating h components (22) for cooling the heat-generating components (22). The module (26) includes a shipping container (30) having a floor (32), a roof (34), a pair opposed longer side walls (36), a pair of opposed shorter end walls (38), and a longitudinal axis, the longitudinal axis of the shipping container (30) being oriented generally perpendicular to the longitudinal axis of the nacelle (14), the shipping container (30) having at least one heat exchanger (40) therein.

Abstract: A wind turbine nacelle configured for mounting on a wind turbine tower and for supporting a rotor-supporting assembly, the nacelle comprising a main unit, and at least one auxiliary unit. The auxiliary unit accommodates at least one operative component, e.g. a converter, a transformer, an electrolysis cell, or a battery. An operative component having a similar function is accommodated in another auxiliary unit which thereby facilitate shared operation, and easy and fast maintenance or replacement of the operative component.

Abstract: A wind turbine nacelle configured for mounting on a wind turbine tower and for supporting a rotor-supporting assembly, the nacelle comprising a main unit, and at least one auxiliary unit. The auxiliary unit accommodates at least one operative component, e.g. a converter, a transformer, an electrolysis cell, or a battery. An operative component having a similar function is accommodated in another auxiliary unit which thereby facilitate shared operation, and easy and fast maintenance or replacement of the operative component.

Abstract: A method 400 of predicting tonal noise produced by a wind turbine is disclosed.

Abstract: A method 400 of predicting tonal noise produced by a wind turbine is disclosed.

Abstract: A wind turbine (101) comprising a torque transmitting coupling (1) between a first rotatable part (2, 3) and a second rotatable part (2, 3) of the wind turbine (101), e.g. in the form of a hub (2) and a shaft (3), is disclosed. The torque transmitting coupling (1) comprises a form- fitted coupling and a compression means (5, 8, 9, 12, 13). The form-fitted coupling defines a plurality of drive flanks formed on the first rotatable part (2, 3) and a plurality of driven flanks formed on the second rotatable part (2, 3). The compression means (5, 8, 9, 12, 13) is arranged on an internal or external perimeter of the form-fitted coupling, and the compression means (5, 8, 9, 12, 13) provides a frictional coupling between the first rotatable part (2, 3) and the second rotatable part (2, 3).

Abstract: A rotating system (1), such as a gear system or a bearing supporting system, for a wind turbine is disclosed. The rotating system (1) comprises a housing (2) arranged to substantially enclose the rotating system (1), said housing (2) defining a lubricant drain (5) towards the exterior of the housing (2), and a rotating part (3) accommodated in an interior part of the housing (2) in a manner which allows rotational movements of the rotating part (3) relative to the housing (2), and in such a manner that lubricant can be contained between the housing (2) and the rotating part (3). The housing (2) and/or the rotating part (3) is/are arranged to provide a pumping action forcing lubricant arranged in an interior part of the housing (2) towards the lubricant drain (5) during rotational movements of the rotating part (3) relative to the housing (2). Excess lubricant is quickly and efficiently removed from the rotating part (3) and led to the lubricant drain (5). Thereby a slip stream of lubricant is reduced.

Abstract: A power transmission system for increasing the rotational speed from a rotor of a wind turbine comprises a main shaft configured to be driven by the rotor, a support structure, and a gearbox. The support structure includes at least one bearing supporting the main shaft for rotation about the main axis, with no other degrees of freedom between the main shaft and support structure. The gearbox includes a gearbox housing rigidly coupled to the support structure and a gearbox input member coupled to the main shaft. The gearbox housing supports the gearbox input member for rotation about the main axis without any other degrees of freedom, and the gearbox input member is coupled to the main shaft with translational degrees of freedom in all directions and rotational degrees of freedom about axes perpendicular to the main axis.

Abstract: An adaptive wind turbine generator (WTG) control system comprising a measurement system MS with sensors A1, A2, MC arranged to perform measurements of mechanical vibrations of one or more mechanical components of the WTG, at a plurality of operating conditions for the WTG. A storage unit SU stores, in a measurement database MD, measured data and corresponding operating condition OC data for the WTG. An operating condition manager OCM determines how to operate the WTG, including rotor speed PSC, according to a control algorithm in response to the data stored in the measurement database MD. Hereby, individual vibration measurements on critical components such as electric power generator and blades of the WTG can be taken into account in determining which rotor speed windows to avoid. This allow a more power efficient WTG, since a large safety margin around calculated or predetermined tabulated rotor speed windows can be avoided.

Abstract: A wind turbine generator with a bearing system is disclosed. The bearing system includes a lockable connection having a bearing surface and a support surface which surfaces are engaged when the lockable connection is locked. Forces from the shaft are transferred via the bearing into the support through the bearing surface, wherein a support angle of the support surface, relative to a shaft plane formed by rotating the shaft around a first axis, which first axis is perpendicular to the center axis and which first axis is comprised in a vertical plane, is in a range from and including 5 degrees to and including 70 degrees.

Abstract: A composite gear part for a gear arrangement includes a shaft part adapted to be rotationally mounted in the gear arrangement, an inner part made from a first material, and an outer part made from a second material. The outer part is fixed circumferentially to the inner part, and the outer part has a plurality of gear teeth formed therein. The outer part must be made from a material which is sufficiently durable and hard to fulfill requirements for gear teeth, but the material of the inner part need not fulfill such requirements. The inner part includes recesses or apertures arranged so that the inner part supports the outer part in an asymmetric manner.

Abstract: A power transmission system for a wind turbine comprises a gearbox and generator. The gearbox includes a gearbox housing and gearbox output member. The generator includes: a generator housing having a drive-end side and non-drive-end side, the drive-end side being coupled to the gearbox housing; a stator supported by the generator housing; a rotor having a rotor shaft coupled to the gearbox output member and a rotor body coupled to the rotor shaft; a non-drive-end shield coupled to the non-drive-end side; a spindle extending from the non-drive-end shield in the axial direction; and at least one generator bearing positioned between the rotor shaft and spindle. The generator bearing(s) support the gearbox output member and rotor shaft. A method of assembling or servicing such a power transmission system is also provided.

Abstract: An adaptive wind turbine generator (WTG) control system comprising a measurement system MS with sensors A1, A2, MC arranged to perform measurements of mechanical vibrations of one or more mechanical components of the WTG, at a plurality of operating conditions for the WTG. A storage unit SU stores, in a measurement database MD, measured data and corresponding operating condition OC data for the WTG. An operating condition manager OCM determines how to operate the WTG, including rotor speed PSC, according to a control algorithm in response to the data stored in the measurement database MD. Hereby, individual vibration measurements on critical components such as electric power generator and blades of the WTG can be taken into account in determining which rotor speed windows to avoid. This allow a more power efficient WTG, since a large safety margin around calculated or predetermined tabulated rotor speed windows can be avoided.

Abstract: The invention relates to a wind turbine being provided with a fluid displacement means for ensuring a certain increased pumping capacity at a certain reduced rotational speed of the main shaft of the rotor and thus of a drive shaft from a gear box of the wind turbine. The invention also relates to a wind turbine being provided with fluid displacement means for ensuring a certain increased pumping capacity at a certain increased rotational speed of the main shaft of the rotor and thus of a drive shaft from a gear box of the wind turbine. The means may be mechanical, hydraulic, pneumatic or electrical. Additionally, the invention relates to a method for operating a wind turbine being provided with such fluid displacement means.

Abstract: A rotating system (1), such as a gear system or a bearing supporting system, for a wind turbine is disclosed. The rotating system (1) comprises a housing (2) arranged to substantially enclose the rotating system (1), said housing (2) defining a lubricant drain (5) towards the exterior of the housing (2), and a rotating part (3) accommodated in an interior part of the housing (2) in a manner which allows rotational movements of the rotating part (3) relative to the housing (2), and in such a manner that lubricant can be contained between the housing (2) and the rotating part (3). The housing (2) and/or the rotating part (3) is/are arranged to provide a pumping action forcing lubricant arranged in an interior part of the housing (2) towards the lubricant drain (5) during rotational movements of the rotating part (3) relative to the housing (2). Excess lubricant is quickly and efficiently removed from the rotating part (3) and led to the lubricant drain (5). Thereby a slip stream of lubricant is reduced.

Abstract: A power transmission system for increasing the rotational speed from a rotor of a wind turbine comprises a main shaft configured to be driven by the rotor, a support structure, and a gearbox. The support structure includes at least one bearing supporting the main shaft for rotation about the main axis, with no other degrees of freedom between the main shaft and support structure. The gearbox includes a gearbox housing rigidly coupled to the support structure and a gearbox input member coupled to the main shaft. The gearbox housing supports the gearbox input member for rotation about the main axis without any other degrees of freedom, and the gearbox input member is coupled to the main shaft with translational degrees of freedom in all directions and rotational degrees of freedom about axes perpendicular to the main axis.

Abstract: The present invention relates to a machine system comprising a machine having at least a first section and a second section, the first section having a first velocity and the second section having a second velocity, the second velocity being different from the first velocity, and a lubrication system comprising at least one tank having one lubricant, the lubrication system being connected to the first and second sections. Furthermore, the invention relates to a wind turbine comprising the machine system.