Vestas Wind Systems A/s

Morten Bagger Søgaard

Anders Niels Hansen

Jesper Lykkegaard Neubauer

Niels Erik Danielsen

Carsten Krogh Nielsen

Martin Møller Sørensen

Claus Grøn Lyngby

Peter Fynbo

Asier Berra

Daniel Whitehouse

Richard Baker

Niels Martin Henriksen

Carsten Lindgaard Jensen

Niels Thomas Bengtson

Claus Gron Lyngby

Jesper Lykkegaard Christensen

Martin Ahlmann

Gert Lading

Tiago Telmo Pinto De Oliveira

Thorkild Møller Bertelsen

Nicolai Tolstrup

Anders Hjarnø Jørgensen

Alun Jones

Benjamin Haastrup

Carsten Christensen

The invention relates to a method for controlling a wind turbine system, more particular for a controlled sliding strategy to lower loads on the yaw system by controlling mechanical brakes and motor brakes in the yaw drive actuators. When the yaw system being in the non-yawing operational state, and the mechanical brake(s) being in an engaged state, and the yaw controller determines or receives a signal indicative of a yaw moment, and if the signal indicative of a yaw moment is above a signal threshold, then the yaw controller sends a braking signal to the yaw drive actuators to enter the motors into the brake state to apply a braking torque.

Method for controlling a wind turbine system in relation to braking of the yaw system

The present invention relates to a wind turbine comprising an internal power supply grid for distributing power to a number of power consuming units of the wind turbine, the wind turbine further comprising a power backup system connected to the internal power supply grid for supplying power to said internal power supply grid during a grid fault, wherein the power backup system comprises a power storage module providing a total backup voltage that falls within a nominal voltage range of the internal power supply grid of the wind turbine.

Full DC voltage power backup system for wind turbine

A lightning current transfer unit for a wind turbine, the wind turbine comprising a first part and a second part being rotatable relative to each other, wherein the lightning current transfer unit is arranged to provide electrical contact between the first and second parts, the lightning current transfer unit comprising: a first current transfer portion comprising a first slider and configured to be electrically coupled to a first electrically conducting slideway of the first part of the wind turbine, the first slider being rotatable relative to the first slideway; a second current transfer portion configured to be electrically coupled to an electrically conducting portion of the second part of the wind turbine; a first main spring biasing the first slider towards the first slideway; wherein the first slider comprises: a primary contact biased towards the first slideway by the first main spring; a secondary contact arranged to move relative to the primary contact; and a secondary spring arranged between the first main spring and the secondary contact such that the secondary spring biases the primary contact away from the first slideway and biases the secondary contact towards the first slideway.

Lightning current transfer unit for a wind turbine

A receptor arrangement for a wind turbine blade, the arrangement comprising a receptor component connectable to a down conductor of a lightning protection system wherein the receptor component is encapsulated by an insulating member. The invention extends to apparatus for lightning protection in a wind turbine blade including such a receptor arrangement connected to a down conductor, and also to a method of assembling lightning protection apparatus for a wind turbine blade.

Improvements relating to lightning protection systems for wind turbine blades

This invention relates to a lightning current transfer system adapted for usage in a wind turbine (W) having a hub () rotatably supported relative to a nacelle () and a plurality of pitchable blades () connected with the hub (). The system () comprises a blade band () mountable to the root of the blade () and a lightning ring () mountable to the nacelle (). The lightning ring () and the blade band () are positioned relative to each other to form a spark gap (SG) there between.

Lightning current transfer system with spark gap and wind turbine using the lightning current transfer system

The present invention relates to a lightning current transfer system () adapted for usage in a wind turbine (W) having a hub () that is rotatably supported relative to a generator in a nacelle () and a plurality of blades () that are pivotably connected with the hub, wherein the hub () is covered by a spinner (A). The lightning current transfer system () comprises a blade band (A) mountable to the root of the blade (); a lightning ring () mountable to the spinner (A) facing the nacelle (); a first contact device () mountable to the spinner (A) adapted for providing lightning current transfer from the blade band (A); a connecting device () for connecting the first contact device () with the lightning ring (); and a second contact device (B) mountable to the nacelle () and adapted for providing lightning current transfer from the lightning ring () to ground.

Lightning current transfer system and wind turbine using the lightning current transfer system

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Arhus N, Denmark

Morten Bagger Søgaard