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Results 1-10 of 46,183 for Criteria: Office(s):all Language:EN Stemming: true maximize
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TitleCtrPubDate
Int.ClassAppl.NoApplicantInventor
1. WO/2015/074164 WIND SELF-GENERATING APPARATUS AND ELECTRIC POWER GENERATION METHOD THEREOFWO28.05.2015
F03D 9/00
PCT/CN2013/001422LI, YaozhongLI, Yaozhong
A wind power self-generation apparatus and an electric power generation method thereof, simply, wind power and electric power generation. A wind generation cavity apparatus inlets air to a wind generation cavity in five directions at high efficiency. An inside of the wind generation cavity is composite-structure space that is provided with spacing layer by layer, enabling the wind generation cavity to generate sufficient wind power for electric power generation. The apparatus comprises the constructed wind generation cavity, air ducts (2; 3; 5), a wind wheel, a cage (6), a transmission axle, an electric generator (11) and power transmission and distribution. During an electric power generation process, any fuel conversion is not required, external force match is not required, no operation cost needs to be input, and the electric power can be generated simply by using the wind power.

2. WO/2015/074661 WIND TURBINE BLADE WITH WAVE SHAPED TRAILING EDGEWO28.05.2015
F03D 1/06
PCT/DK2014/050320ENVISION ENERGY (DENMARK) APSSØRENSEN, Tommy
The present invention relates to a wind turbine with two or more wind turbine blades having at least one continuous profile extending along the length of the blade. The continuous profile may be formed by a plurality of first and second projecting elements which extend in a chordwise direction. The ratio between the height and length of the first and second element is at least 1:1. The height of the projecting elements may be tapered off from the trailing edge towards the leading edge and/or from the blade root towards the tip end. This allows the increase in strain forces generated in the wind turbine blade to be reduced by deforming the first and second elements in an edgewise direction. This also allows for a continuous reduction of the strain forces and a reduced thickness of the first and second elements which in turn saves material.

3. WO/2015/075068 METHOD AND ASSEMBLY FOR DETECTING ICE ON A WIND ENERGY PLANTWO28.05.2015
F03D 11/00
PCT/EP2014/075016WOBBEN PROPERTIES GMBHLENSCHOW, Gerhard
The invention concerns a method for detecting ice on a wind energy plant, in particular on a rotor of the wind energy plant, having at least one rotor blade, a heating means for heating the at least one rotor blade and a temperature sensor, the method being characterised in that the temperature sensor is designed to detect a temperature signature in the form of a temperature change at at least one measuring point on a surface of the rotor blade, and comprises the following steps: specifying a reference temperature signature of the rotor blade, which reference temperature signature describes the temperature change at the at least one measuring point on the surface of the rotor blade when the wind energy plant is in an ice-free state; heating the at least one rotor blade at the at least one measuring point on the surface of the rotor blade by means of the heating means; detecting the temperature signature for the at least one measuring point on the surface of the rotor blade during heating; comparing the detected temperature signature with the reference temperature signature; determining an evaluation result on the basis of said comparison; and assigning the evaluation result to an ice-covered state of the wind energy plant if a deviation between the detected temperature signature and the reference temperature signature is determined, or otherwise assigning said evaluation result to the ice-free state of the wind energy plant. The invention also relates to an assembly for detecting ice on a wind energy plant.

4. WO/2015/074664 ROTOR BLADE CONTROL FOR HIGH WINDSWO28.05.2015
F03D 7/02
PCT/DK2014/050393VESTAS WIND SYSTEMS A/SCAPONETTI, Fabio
The invention relates to a control apparatus and method for controlling the rotor blades of a wind turbine, and in particular to controlling the rotor blades during an extreme wind event. An extended mode of operation of the wind turbine rotor beyond the cut-out wind speed is provided. In the extended mode of operation, the pitch of the wind turbine blades is actively controlled so that the rotor and the generator idle at a designated rotational speed. The rotational speed may be relatively high, say 15 to 20% of the nominal speed, compared with minimal speeds experienced by purely feathered wind turbine blades, and may be further controlled as a function of the incident wind speed. Output power control in the extended mode may be zero but is preferably a low, but non-zero value. The output power so produced may then be used as an auxiliary power source for controlling the wind turbine in situations where the utility grid fails.

5. WO/2015/075014 A SYSTEM AND METHOD FOR MANUFACTURING A WIND TURBINE BLADE COMPONENTWO28.05.2015
B29D 99/00
PCT/EP2014/074855LM WP PATENT HOLDING A/SJESPERSEN, Klavs
A system and method for the manufacture of a wind turbine blade component is described, preferably a shear web component (70) for a wind turbine. The shear web is manufactured by using a forming tool (78a, 78b) to define a flange-shaped cavity (84) at an end of a web member (70). A resin is injected (86) into the cavity (84) and cured to form a flange cast onto the web member. The forming tool (78a, 78b) is subsequently removed from the web member to provide a component having a load-bearing flange formed from a cured resin.

6. WO/2015/074576 LIGHTNING PROTECTION DEVICE, DIRECT-DRIVE WIND TURBINE GENERATOR SYSTEM AND LIGHTNING PROTECTION METHOD THEREOFWO28.05.2015
F03D 11/00
PCT/CN2014/091713BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD.HUANG, Jinpeng
A lightning protection device comprises a lightning receptor arranged on a nonmetal blade (1) for receiving the lightning current and a blade downlead (2) electrically connected to the lightning receptor; a first lightning current guide component (3) electrically connected with the blade downlead (2) and connected with the outer surface of a generator rotor (5) in an insulation manner; a second lightning current guide component (7) connected with the outer surface of the generator rotor and an insulated cabin cover (6) in an insulation manner, and electrically connected with the first lightning current guide component (3) by a metal conductor (9); a lightning protection downlead (11) for electrically connecting the second lightning current guide component (7) with a grounding component (15) arranged in a tower, so as to discharge the lightning current into the ground through the tower. A direct-drive wind turbine generator system and a lightning protection method thereof are also disclosed.

7. WO/2015/077337 SYSTEM AND METHOD FOR ASSESSING THE PERFORMANCE IMPACT OF WIND TURBINE UPGRADESWO28.05.2015
F03D 11/00
PCT/US2014/066409GENERAL ELECTRIC COMPANYGREGG, Peter, Alan
In one aspect, a method for assessing the performance impact of wind turbine upgrades may generally include determining a baseline power curve for a wind turbine prior to the wind turbine being upgraded and determining a baseline wind speed transfer function for the wind turbine prior to the wind turbine being upgraded. The method may also include determining an upgraded wind speed transfer function for the wind turbine after the wind turbine is upgraded. In addition, the method may include determining a corrected local wind speed for the wind turbine based on the baseline and upgraded wind speed transfer functions and determining an upgraded power curve for the wind turbine based on the corrected local wind speed.

8. WO/2015/075123 WIND FARMWO28.05.2015
F03D 11/00
PCT/EP2014/075149ENVISION ENERGY (JIANGSU) CO., LTD.GRABAU, Peter
A wind farm comprising a number of wind turbines (17) arranged on a ground comprising a first ground portion (16) having a first ground surface (18) and an outer periphery (19) and a second ground portion (15) having a second ground surface (22) and surrounding the first ground portion. The first ground portion (16) is covered with a reflective first artificial covering (20) so as to provide the first ground portion with a reflecting surface (21) having an albedo higher than the albedo of the surrounding second ground portion (15) and thereby generating a lower temperature and a higher pressure in the first ground portion (16) than in the second ground portion (15) and as a result thereof a wind (13) having a wind speed in a direction from the first ground portion (16) towards the second ground portion (15). At least some of the wind turbines (17) are arranged in the second ground portion in such a distance from the periphery (19) of the first ground portion (16) that they are subjected to the wind coming from the first ground portion.

9. WO/2015/071788 MULTI-WINDMILLWO21.05.2015
F03D 3/02
PCT/IB2014/065155PEDERSEN, JesperPEDERSEN, Jesper
This new type of Multi-Windmill has as its function, to produce electricity for the grid, even from very little space. This is in much larger scale compared to conventional wind turbines. This is solved by additional built in generators, and because this new type of wind turbine can be built much bigger and in taller structures, maybe up to skyscraper size of perhaps 500 m high or even higher and bigger, and if possible to compete with other forms of energy. Due to the wind turbine's huge construction size, this type of wind turbine will suit very well as offshore windmills, where at sea it blows more wind speed than on land - up to 50% more. With its stability, it will stand firmly on the seabed / land due to multiple support mast towers. Cross braces that stabilize the turbine against rotations and vibrations makes the turbine stable and solid.

10. WO/2015/070870 IMPROVEMENTS RELATING TO WIND TURBINESWO21.05.2015
F03D 11/00
PCT/DK2014/050378VESTAS WIND SYSTEMS A/SOLESEN, Ib Svend
The invention relates to a wind turbine having at least one rotor blade comprising: a transmitter arranged to transmit an electro-magnetic (EM) radiation signal having spatially dependent characteristics;a receiver arranged to receive the EM-radiation signal, the receiver being located on the blade at a location outboard with respect to the transmitter and being arranged such that a deflection of the rotor blade results in a displacement of the receiver relative to the transmitter; and a processor arranged to calculate a deflection of the rotor blade based upon spatially dependent characteristics of the received EM-radiation signal. The invention also relates to a method of determining deflection of a blade of a wind turbine rotor during rotation of the rotor, the method comprising: transmitting from a first position an electro-magnetic (EM) radiation signal having spatially dependent characteristics; receiving the EM-radiation signal at a second position, the second position being located on the blade at a location outboard with respect to the first position, and being arranged such that a deflection of the rotor blade results in a displacement of the second position relative to the first position; and calculating the deflection of the blade based upon the spatially dependent characteristics of the received EM-radiation signal.


Results 1-10 of 46,183 for Criteria: Office(s):all Language:EN Stemming: true
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