Siemens Aktiengesellschaft

Siemens Gamesa Renewable Energy A/s

Rune Nielsen

Steen Damgaard

James Kenneth Booth

Thorkil Munk-Hansen

Uffe Eriksen

Samuel H Hawkins

Jens Anton Agerskov Veng

Bo Nedergaard Jacobsen

Daniel Kai Jensen

Kristian Fjordgaard

Soeren Kammer Soerensen

Helge Fogh

Jeppe Noes Buskbjerg Nikolajsen

Provided is a wind turbine including an active yaw system realized to maintain an upwind orientation of the wind turbine aerodynamic rotor during safe operating conditions, which active yaw system includes a number of yaw drive units, and wherein a yaw drive unit includes a negative brake; a principal power supply configured to supply power to the active yaw system during normal operation of the wind turbine; and a dedicated negative brake reserve power supply configured to supply power to the negative brakes in the event of a grid disconnect. A method of operating such a wind turbine is also provided.

Wind turbine

Provided is a wind turbine including a tower and a nacelle rotatable relative to the tower by means of a yaw bearing arrangement having a yaw ring fixed relative to the tower, several upper sliding pads arranged between the upper side of the yaw ring and a sliding structure of the nacelle and several lower sliding pads arranged between the lower side of the yaw ring and the sliding structure, wherein the sliding pads are fixed to the yaw ring and that at least one radial opening is provided in the sliding structure allowing access to the upper or lower sliding pads.

A yaw bearing arrangement for a wind turbine, including a yaw bearing with a yaw ring and radial adjustment acting on the inner radial lateral surface of the yaw ring, the radial adjustment including at least a housing, at least one sliding pad and one or more threaded adjustment bolts arranged in threaded housing bores and connected with the sliding pad for a radial adjustment of the sliding pad towards the lateral surface and axial bores for accommodating fixation bolts, wherein the housing is a ring or a ring segment with a plurality of radial, at least partially threaded bores, each radial bore accommodating a radial sliding unit including a radial sliding pad and a threaded radial adjustment bolt for radial movement of the sliding pad.

Yaw bearing arrangement

A method of vertically assembling a generator of a wind turbine is provided. The method includes A rotor part is arranged on a horizontal assembly which supports components of the generator such that a rotational axis of a component is essentially vertical during assembly, and the assembly support is configured to allow access to an interior of a generator component during the assembly procedure; a stator part is arranged in the rotor part; and the stator part is joined to the rotor part. An assembly arrangement for a vertical assembly of a generator of a wind turbine is provided. The assembly arrangement includes a horizontal assembly support for supporting components of the generator such that a rotational axis of a component is essentially vertical during assembly, and the assembly support is configured to allow access to an interior of a generator component during the assembly procedure.

Method of vertically assembling a generator of a wind turbine

A field structure of an electrical machine includes a plurality of field slots. Each field slot extends from a first surface of the field structure into the body of the field structure. Each filed slot also has a T-shaped cross-sectional area dimensioned to accommodate a magnet pole assembly comprising a corresponding cross-sectional area.

Field structure of an electrical machine

The present invention relates to an arrangement for directing a lightning current within a wind turbine. The arrangement includes a first component, a second component, a contact element and a guideway. One of the two components is arranged moveably in relation to the other. The contact element is arranged in a way that the first component is electrically connected to the second component in order to direct a lightning current within the wind turbine. The contact element is guided moveably by the guideway. According to the invention, the guideway is at least partly integrated in the first component.

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Ikast, Denmark

Rune Nielsen