1037 patents
Page 51 of 52
Utility
Estimating a Characteristic of a Wind Turbine Electrical Signal
27 Nov 19
A method and apparatus for estimating a characteristic of a wind turbine electrical signal comprises buffering a sequence of sample values of the wind turbine electrical signal and a sequence of sample times corresponding with the sequence of sample values.
Torsten LUND, John Godsk NIELSEN
Filed: 16 Oct 17
Utility
Wind turbine blades
25 Nov 19
A reinforcing structure for a wind turbine blade is in the form of an elongate stack of layers of pultruded fibrous composite strips supported within a U-shaped channel.
Mark Hancock, Frank Hoelgaard Hahn, Chris Payne
Filed: 10 Dec 12
Utility
Wind turbines
25 Nov 19
A method of determining a twist angle of a wind turbine blade, the method comprising providing first and second transmitters on the wind turbine blade, the first transmitter being spaced apart from a receiver by a first distance, and the second transmitter being spaced 5 apart from the receiver by a second distance, the transmitters being arranged such that twisting of the blade causes an increase in one of the first or second distances and a decrease in the other of the first or second distances; transmitting a blinking signal from each of the first and second transmitters towards the receiver, the blinking signals having a blinking frequency; varying the blinking frequency of the blinking signals; monitoring the 10 amplitude of the blinking signal received by the receiver as the blinking frequency is varied; determining a particular blinking frequency that results in an increased amplitude of the blinking signal received by the receiver; and using the determined particular blinking frequency to calculate the blade twist angle.
Ib Svend Olesen
Filed: 15 Dec 15
Utility
Cable routing for wind turbine system having multiple rotors
25 Nov 19
The present invention relates to a wind turbine system comprising a plurality of wind turbines mounted to a common support structure (4) by a support arm arrangement (10) comprising a mount portion (12) and at least one arm (13) extending from said mount portion and carrying a respective wind turbine (6).
Torben Ladegaard Baun
Filed: 8 Jun 16
Utility
Control Method for a Wind Turbine
20 Nov 19
A wind turbine includes at least one wind speed sensor, a number of pitch-adjustable rotor blades, and a control system for changing the pitch of the rotor blades and/or a generator torque.
Johnny NIELSEN
Filed: 28 Jun 17
Utility
Electrical Isolation Mounting of Electrical Machine Stator
20 Nov 19
The present invention relates to a wind turbine with an electrical machine wherein said electrical machine comprises a stator (702) with one or more electrical winding(s) (704), said electrical winding(s) being arranged to be connected to an electrical grid (760) by at least one cable (740) with at least one phase conductor (746), the at least one cable (740) comprises at least one return path (744) to conduct leakage currents, and at least one electrical shield (745), the stator being electrically isolated from a stator housing (701).
Lars Dyred SIMONSEN, Peter MONGEAU
Filed: 27 Nov 17
Utility
Control of wind turbines
18 Nov 19
The present invention relates to a method and control system comprising at least one cable temperature sensor for measuring cable temperature values for at least one power collection cable (50, 55) connected to a wind turbine (20) and a controller (110) arranged to generate and output an overrating control signal to the wind turbine (20).
Kelvin Hales, Chris Spruce
Filed: 15 Oct 15
Utility
Improvements relating to the determination of rotor imbalances in a wind turbine
18 Nov 19
A wind turbine comprising a tower, a rotor including a plurality of blades, an electrical generator operatively coupled to the rotor, and a control system including an active damping module configured to monitor oscillatory motion of the wind turbine and to output a damping demand signal to damp the oscillatory motion.
Martin Brødsgaard, Thomas Krüger
Filed: 11 Aug 15
Utility
Lightning current transfer unit for a wind turbine
18 Nov 19
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.
Anders Niels Hansen, Morten Bagger Søgaard, Claus Grøn Lyngby, Gert Lading
Filed: 17 Dec 15
Utility
Converters for wind turbine generators
18 Nov 19
A wind turbine generator 1 supplies three-phase a.c. current of variable voltage and variable frequency to two pairs of rectifiers 4a, 4b and 4c, 4d which generate respective d.c. outputs connected to positive, negative and neutral d.c. conductors 6, 7, 8.
Tusitha Abeyasekera, Duy Duc Doan, Lars Helle, Allan Holm Jørgensen, John Godsk Nielsen, Søren Andersen
Filed: 13 Oct 14
Utility
Rotor Restraining and Rotating Apparatus and Method for Wind Turbines
13 Nov 19
Rotor restraining and rotating apparatus and methods for a wind turbine (1) are described.
Kristoffer Isbak Thomsen, Thomas Møller Christiansen
Filed: 1 Oct 17
Utility
Wind Power Plant Having a Plurality of Wind Turbine Generators and a Power Plant Controller
6 Nov 19
A wind power plant which supplies power to a utility grid in accordance with an active power reference, where the wind power plant comprises a plurality of wind turbine generators and a power plant controller arranged to send an active power set point to the wind turbine controller of each of the plurality of wind turbine generators.
Steve JESSEN, Søren KAPPELGAARD, Jacob Barsøe KJÆRGAARD, Kouroush NAYEBI, Mads Rajczyk SKJELMOSE, Mu WEI
Filed: 4 Jul 17
Utility
an Alignment Tool for Aligning Bores In Structural Members
6 Nov 19
An alignment tool (1) for aligning a bore (13) extending through a first structural member (14) with a bore (19) extending through a second structural member (15) is disclosed.
Jesper Hermann Hansen, Jakob Anders Sørensen, Jens Torborg
Filed: 22 Jan 18
Utility
Connection Joint for a Sectional Wind Turbine Rotor Blade and Associated Methods
6 Nov 19
A wind turbine blade includes a first blade section and a second blade section configured to be coupled together at a joint interface.
Anton BECH
Filed: 18 Dec 17
Utility
Control System for Modular Multilevel Converter
6 Nov 19
A power conversion system for a wind turbine generator, comprising a machine-side converter having an AC voltage input from a generator and a DC voltage output to a DC link, wherein the machine-side converter is a modular multi-level converter comprising one or more converter legs corresponding to a respective one or more electrical phases of the generator, each of the converter legs comprising a plurality of converter cells, the system further comprising: a converter control module which provides the machine-side converter with a gate signal, and an electrical frequency estimation module configured to estimate the mean electrical frequency of the generator; wherein the gate signal has at least one mean switching frequency corresponding to at least one electrical phase of the generator; wherein the converter control module is configured to modulate the mean switching frequency of the gate signal in dependence on the mean electrical frequency of the generator.
Ciprian BIRIS, Duy Duc DOAN, John Godsk NIELSEN
Filed: 28 Nov 17
Utility
Methods and Systems for Repairing Wind Turbine Blades
6 Nov 19
A method of repairing erosion on a wind turbine blade while on a wind turbine includes placing a scanning device on an erosion zone.
Paul Badger, Servet Sert
Filed: 11 Dec 17
Utility
Fast reacting control system for wind turbine
4 Nov 19
The present disclosure relates to a control system for a wind turbine comprising more controllers and where at least some of the controllers operate at different sample frequencies.
Keld Hammerum, Martin Ansbjerg Kjær, Jesper Sandberg Thomsen, Eik Herbsleb, Tobias Gybel Hovgaard
Filed: 26 Sep 16
Utility
Improvements relating to lightning protection systems for wind turbine blades
4 Nov 19
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.
Morten Bagger Søgaard, Daniel Whitehouse, Richard Baker
Filed: 14 Oct 14
Utility
Joint for Connecting a Wind Turbine Rotor Blade to a Rotor Hub and Associated Methods
30 Oct 19
A wind turbine rotor blade includes an elongate body having a root end configured to be coupled to a rotor hub of a wind turbine.
Anton Bech
Filed: 12 Dec 17
Utility
CorrectedSystems and Methods for Generating an Inertial Response to a Change In the Voltage of an Electrical Grid
30 Oct 19
Systems, methods, and computer program products for providing an inertial response by a wind power system to power fluctuations in an electrical grid.
Germán Claudio TARNOWSKI
Filed: 18 Jul 17