Envision Energy (denmark) Aps

Vestas Wind Systems A/s

Vestas Wind Systems A/s, R&d

Anders Varming Rebsdorf

Mogens Christensen

Lars Helle

Michael Friedrich

Soeren Staugaard

Stephane A Eisen

Michael Houllind Jensen

The invention relates to a wind turbine with a generator and a method of assembling a generator thereof, wherein the generator comprises a rotor rotatably arranged relative to a stator. The rotor comprises a plurality of superconducting pole units arranged on a back iron which is spaced apart from a rotor structure by a number of thermally insulating plates or beams. Said plates or beams are located between either ends of the rotor and orientated relative to the rotational direction of the rotor. Each plate has a first end firmly connected to another first beam extending in an axial direction and a second end firmly connected to another second beam also extending the axial direction. The first beams are further firmly connected to the back iron while the second beams are further firmly connected to the rotor structure. The thermally insulating plates or beams provide a flexible and cheap support interface that is able to adapt to the tolerances of the individual components.

Wind turbine with a superconductive generator having an improved thermally insulating structure

The present invention relates a wind turbine comprising a wind turbine tower with a nacelle provided on the top to which a rotor hub with one or more wind turbine blades is rotatably mounted so that they form a rotor plane. A floating foundation having a upper section is mounted to the bottom of the wind turbine tower, wherein the foundation has a buoyant body configured to be installed at an offshore position having a water depth of about 40 m or more. The wind turbine blade comprises an inner blade section coupled to an outer blade section by a pitch junction in which a pitch mechanism is coupled to a pitch control system configured to regulate the pitch of the outer blade section relative to the inner blade section at wind speeds above a first wind speed. This allows the pitching to be used to counteract the tilting of the wind turbine caused by the different thrusts acting on the structure. This allows for a more linear control of the bending moment induced in the structure, since the blade sections provides a more constant thrust acting on the rotor hub which in turn allows the large negative damping loads and stresses introduced in the wind turbine to be eliminated.

Partial pitch wind turbine with floating foundation

An offshore wind turbine comprising a tower, where said wind turbine at a level above sea level comprises at least one structure for storing at least one container, said container having the size and measures of a standard container, where said structure is arranged on the side of the tower, and a method of manufacturing such a concrete structure for an offshore wind turbine. The structure for storing one or more containers includes a deck, and at least one bed for supporting at least one container along the container's lower surface and/or edges, where the structure is a concrete structure. By manufacturing the structure from concrete, a very robust and strong structure is achieved.

Offshore wind turbine having a support system for interchangeable containers, the support system being combined with a wave run-up deflector and method of manufacturing same

A wind turbine having a wind turbine tower with a nacelle; a wind turbine rotor hub with at least one rotatably mounted wind turbine blade; a shaft coupled to the wind turbine rotor hub and a generator. The generator has a rotor having at least one superconducting rotor coil arranged rotatably relative to a stator having at least one stator coil. The rotor is arranged in a rotor housing and the stator is arranged in a stator housing, the housings being separated by a rotor-stator gap. The stator housing has a stator inner shell and a stator outer shell connected together by at least one stator housing end plate. The stator inner shell has a first inner shell element attached to a stator iron that is connected to a second inner shell element. A pressure plate is attached to the second inner shell element and the stator outer shell.

Wind turbine with sealed off stator chamber

Blade

Cooler cover

A wind turbine having a wind turbine tower with a nacelle; a wind turbine rotor hub with at least one rotatably mounted wind turbine blade; a shaft coupled to the wind turbine rotor hub and a generator. The generator has a rotor with at least one superconducting rotor coil arranged rotatably relative to a stator having at least one stator coil. The rotor is arranged in a rotor housing and the stator is arranged in a stator housing, the housings being separated by a rotor-stator gap. The stator housing has a stator inner shell and a stator outer shell connected together by at least one stator housing end plate. The stator inner shell has a first inner shell element attached to a stator iron which is connected to a second inner shell element. A pressure plate is attached to the second inner shell element and the stator outer shell.

A method for controlling the position of blades of a two-bladed wind turbine when extreme conditions are detected or forecast for the wind turbine. When extreme conditions are detected or forecast, the wind turbine blades are positioned in a horizontal arrangement, and actively yawed such that a tip of one of the wind turbine blades points into the wind direction. The blades are yawed such as to actively follow the changing wind direction, resulting in a reduced surface area of the blades exposed to the extreme wind forces, due to the spear-like arrangement of the turbine blades. This reduced surface area provides for a reduction in the extreme loads which may be experienced by the wind turbine in such extreme wind conditions.

Wind turbine and associated control method

Nacelle cover

A horizontal-axis wind turbine of a rotor-support design is provided in which the structural load of the wind turbine rotor is carried by the wind turbine tower itself. The turbine uses a composite shaft to transfer torque from the wind turbine rotor to the generator, the shaft having high torsional strength but being flexible in bending. This prevents the transmission of bending moments from the rotor hub to the generator system. Accordingly, the components of the turbine can be rigidly mounted to the turbine main frame, removing the need for vibration damping elements. The result is a wind turbine of reduced weight, which can be modeled and designed for improved efficiency and performance. Furthermore, as the turbine components do not have to be load-balanced, the turbine can be of a modular construction for relatively easy servicing and/or upgrading.

Flexible shaft wind turbine

A drive shaft for a wind turbine is shaped so as to allow for increased bending of the shaft, while being suitable for transferring torque in a wind turbine system. An example of such a shaping is a drive shaft having a helical rib defined on the surface of the shaft. A wind turbine incorporating such a shaft, and a method of manufacture of such a shaft are also described.

Growing community of inventors

Skanderborg, Denmark

Anders Varming Rebsdorf