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473
results.
Updated on
07/08/2025 [07:57:00]
Results 250 to 275 of 473
Absstract of: JP2025112191A
【課題】垂直軸風車の回転特性を起動時から高速回転時まで広い範囲で向上させることの出来る回転翼を提供するものである。【解決手段】垂直軸風車の回転翼５の後縁７近傍に回転円周に沿った平板乃至は円周に沿って湾曲した板状のリアフィン１０を取り付けたものであり、回転翼５の後縁７と該リアフィン１０との隙間９をリアフィン１０の翼弦とほぼ同等である如くすることによって、流体抵抗を低減することを可能にするものである。【選択図】図２
Absstract of: WO2025159729A1
A low-noise multifunctional rotor for centrifugal/axial fans, vertical wind turbines and hydromachines is disclosed. The rotor comprises at least two blades fixed around a central shaft (1) by fastening elements (6). Each blade incorporates a first helical plate formed from a convex-concave rotation surface (3) and a second helical plate formed from a concave -convex rotation surface (4). The rotation radii of surface points, measured in planes perpendicular to the rotor axis, are equal to the radii defined in the generating surfaces and increase progressively from the lower to the upper part of the rotor, establishing an ascending spiral flow path. Novelty resides in that one side of plate (3) is aligned at an acute angle towards the inner face of plate (4) and is spaced therefrom by a gap, which reduces turbulence, noise and vibration while improving flow efficiency.
Absstract of: WO2025159447A1
The present invention comprises: a floating body floating on the sea surface; a mooring anchor seated on the seabed; a weight body positioned underwater between the floating body and the mooring anchor; and a plurality of mooring lines for mooring the floating body and having a closed curve shape. The mooring lines include: a first portion, in which a central lower part catches on a weight body mooring line catching part of the weight body; a second portion which passes through a weight body vertical passage in the weight body, and in which a central lower part catches on an anchor mooring line catching part of the mooring anchor; and a third portion which passes through a floating body vertical passage in the floating body and is connected to the first portion and the second portion, and in which a central upper portion catches on a floating body mooring line catching part provided on the floating body.
Absstract of: WO2025156806A1
A method and system for preventing wind turbine blade-tower collision. The method comprises: step 1: calculating a boundary pitch angle on the basis of the operating state of a wind turbine blade, and recording the boundary pitch angle as A0; step 2: calculating a required operating time for the blade to move from 0° to the boundary pitch angle A0, and determining a pitch position P0 on the basis of the operating time; step 3: determining a blade passing through the pitch position P0 on the basis of the pitch position P0; step 4: performing blade-tower collision preventing operating state determination on the blade passing through the pitch position P0 to obtain a determination result; and step 5: performing blade-tower collision preventing operation on the basis of the determination result.
Absstract of: WO2025156742A1
The present invention relates to a yaw assembly, device, and method for a wind turbine. A drive assembly is arranged between a main frame portion and a tower portion. The drive assembly is provided with one or at least two drive arms. The drive arms individually, simultaneously, or alternately and intermittently drive the main frame portion to rotate circumferentially on the tower portion. The drive assembly is intermittently drive-connected to insertion components. During the reset return stroke of the drive arms, force transmission between the main frame portion and the drive arms, or between the drive arms and the tower portion, is in a disengaged state.
Absstract of: WO2025156736A1
Provided in the present application are a multi-electrolytic-cell series-parallel hydrogen production control method and a power generation system. The method in the present application comprises: acquiring electrolysis power parameters of a plurality of electrolytic cells and a real-time generation power of a power generation system; and then, on the basis of the plurality of electrolysis power parameters and the real-time generation power, controlling the plurality of electrolytic cells to sequentially and repeatedly execute electrolysis start-stop operations, wherein each electrolysis start-stop operation comprises: comparing the magnitude of a target round startup output power with the magnitude of a rated minimum electrolysis power of a target electrolytic cell; on the basis of a corresponding magnitude determination, performing subsequent control operations; and then in the subsequent control operations, performing a corresponding control operation by means of determining whether the target round startup output power exceeds a danger warning threshold power. Thus, the hydrogen production efficiency and flexibility of the plurality of electrolytic cells in the hydrogen production power generation system are improved, the stability of the hydrogen production power generation system is improved, and the service life of the hydrogen production power generation system is prolonged.
Absstract of: WO2025156495A1
The present invention relates to the technical field of metallurgical steels, in particular to an anti-fatigue load bearing steel for a wind turbine main shaft, a preparation method therefor, and a use thereof. The present invention herein provides the following solution, comprising: S1. smelting: refining a raw material steel into molten iron, carrying out impurity removal and deoxidization, and adjusting the content of each component to obtain molten steel for casting; S2. continuous casting: carrying out electroplusing crystallization and solidification on the molten steel for casting to obtain a continuous casting billet; S3. rolling: carrying out rough rolling on the continuous casting billet and then carrying out finish rolling to obtain a finish-rolled billet; and S4. post-rolling treatment: first slowly cooling the finish-rolled billet and then air cooling same to obtain an anti-fatigue load bearing steel. In the present invention, by component and process control, a specific microstructure can be formed; the surface of a grain has a corrugated grain boundary; the corrugated grain boundary reduces the orientation difference between adjacent grains, lowers the grain boundary energy, and can effectively impede dislocation propagation and grain boundary sliding; and high-density dislocations formed within grains, interactions between dislocations, and the development of Cottrell atmosphere have a deformation strengthening effect on a material, thus achieving an excellent
Absstract of: WO2025156028A1
A rotor blade for a wind turbine includes a blade root, a blade tip, and a longitudinal length extending from the blade root to the blade tip. The rotor blade includes an inner portion having an inner portion length extending from a first inner portion end at the blade root to a second inner portion end, and an inner angle of attack decreasing along the inner portion length from the first inner portion end to the second inner portion end. The rotor blade includes an outer portion having an outer portion length extending from a first outer portion end proximate the second inner portion end to a second outer portion end at the blade tip, and an outer angle of attack constant along the outer portion length for a maximum lift-to- drag ratio of the outer portion at a design tip-speed-ratio and at a design wind velocity.
Absstract of: WO2025157574A1
The invention describes a shear web assembly (1) for a wind turbine rotor blade (4), comprising a composite shear web (10); at least one electrical cable section (12) bonded to the bag-side (10B) of the shear web (10), wherein the length (L12) of an electrical cable section (12) is at most 80% of the shear web length (L10); and a bonding layer (18) over each electrical cable section (12), wherein a bonding layer (18) comprises resin-infused reinforcing material and is formed concurrently with the composite shear web (10). The invention further describes a method of manufacturing such a shear web assembly (1), and a wind turbine rotor blade (4) comprising such a shear web assembly (1).
Absstract of: US2025243840A1
A system for a wind turbine nacelle having a shaft housing, a blade shaft that extends through the shaft housing and is rotatable relative to the shaft housing, a blade holder connected to the blade shaft, and an outer bearing between the blade shaft and the shaft housing includes a conical spring. The conical spring engages a portion of the outer bearing to exert a preload force on the outer bearing. The system further includes a backstop surrounding the blade shaft and having an interference fit with the blade shaft and a pin extending through the blade shaft and the blade holder. The pin is positioned to prevent the blade shaft from moving relative to the backstop.
Absstract of: US2025243762A1
A blade is used in fluid and includes: a base member; and a coat layer that is formed on the base member, a plurality of first grooves and a plurality of second grooves are formed on a surface of the coat layer, a pitch of the plurality of first grooves is different from a pitch of the plurality of second grooves.
Absstract of: US2025243788A1
An energy storage system (TES) converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. In one application, the energy storage system provides higher-temperature heat to a solid oxide electrolysis system to maintain in an electrolysis operating temperature range during operation and nonoperation, thereby increasing the efficiency of the temperature control.
Absstract of: US2025242896A1
The present application discloses a floating-type wind power generation platform and a floating-type wind power generation system. The floating-type wind power generation platform includes a first transverse connector and multiple floating support components, where the multiple floating support components are arranged at intervals on the water surface in a horizontal direction, and the first transverse connector includes a first connecting rod and an outward-extending plate, the first connecting rod has both ends connected to two adjacent floating support components, and the outward-extending plate extends from the outer side wall of the first connecting rod in a direction away from the center of the first connecting rod.
Absstract of: US2025242895A1
In the energy collection location changing system, a power generation floating body and a collection station setting system are provided so as to be able to perform data communication with each other. The power generation floating body has a power generation storage unit for storing the power generation energy and a navigation unit for navigation of the own base, and the collection station setting system has a location determination unit for determining a recovery position in which the collection station is provided based on at least one of a wind condition and a sea condition, a location notification unit for notifying the recovery position to each of the power generation floating bodies, and a setting unit for providing the collection station in the recovery position, and the navigation unit of the power generation floating body causes the own base to travel to the recovery position.
Absstract of: WO2025157359A1
A pitch controlled wind turbine has a tower, a nacelle mounted on the tower, a hub mounted on the nacelle, and blades. The wind turbine includes blade connecting members, each extending between neighbouring blades, and pre-tension members, each connected to one of the blade connecting members and to the hub via a tensioning device, the tensioning device provides radial movement of the pre-tension member due to extension/retraction of the tensioning device, each pre-tension member provides pre-tension in ta respective blade connecting member. A cable vibration control system is coupled to one or more of the tensioning devices, and to one or more sensors for detecting a vibration of, or resultant noise from, one or more of the blades, blade connecting members and pre-tension members. The control system is configured to control the tensioning devices to extend or retract so as to control vibrations and noise generated by the wind turbine.
Absstract of: EP4592522A1
Load carrying assembly (10), comprising a plurality of length sections of used wind mill blades (11) arranged in a preferably symmetrical structural pattern around a common longitudinal axis. The wind mill blade sections are attached to one another by a plurality of spaced apart connection elements (12, 13, 14). The structural pattern is typically symmetrical around a central axis.
Absstract of: EP4592520A1
The present application relates to a forward swept fan blade, a design method and manufacturing method therefor and a wind turbine. The forward-swept fan blade comprises: a blade body, extending in the length spanwise direction between a root and a tip of the blade; and a pitch axis, extending and vertically penetrating through the center of a root circle. With respect to the pitch axis, on the downstream side of the middle of the blade in the length spanwise direction, the blade deviates in a direction from a trailing edge to a leading edge. Using the forward-swept fan blade in the embodiment of the present application can enable the blade to generate forward torsional deformation during operation, so as to counteract the trend of the blade deviating from the optimal lift-to-drag ratio, thus achieving the purpose of minimum loss of the optimal power coefficient at different rotating speeds, and increasing the overall power generating capacity of wind turbines.
Absstract of: EP4592521A1
This application relates to the technical field of wind turbines, and provides a wind turbine flutter suppression method and device, a control system and a wind turbine. The method includes: determining a nacelle-wind direction angle between a wind direction and a nacelle direction; and determining a pitching method for changing pitch angles according to the nacelle-wind direction angle. The pitching method includes a speed-controlled pitching scheme and a pitch-angle-sequence-controlled pitching scheme. The speed-controlled pitching scheme includes: regulating pitch angles of blades of the wind turbine according to a rotor speed of the wind turbine to keep the rotor speed within a preset speed range until flutter of the wind turbine is suppressed. The pitch-angle-sequence-controlled pitching scheme includes: performing a pitching operation on the pitch angles of the blades of the wind turbine according to preset pitching rules until the flutter of the wind turbine is suppressed. According to this application, with this method, the flutter suppression of the wind turbine can be realized without yawing by using a low-power standby power supply when the wind turbine is powered down.
Absstract of: CN119895179A
The invention relates to an industrial gear unit (100) having at least one shaft (101) and at least one shaft receptacle (103) for mounting the shaft in an axially fixed manner, the shaft being mounted in the shaft receptacle in an axially fixed manner in at least one axial portion (X1, X2) of the shaft, according to the invention, an intermediate element assembly (10) is arranged between the shaft receptacle (103) and the shaft (101) in such a way as to act in the axial section, said intermediate element assembly being mounted between the shaft and the shaft receptacle in an axially fixed and axially force-transmitting manner, the intermediate element assembly has a laser structured surface (10.1) in at least one surface portion (10.1 a, 10.1 b) on the shaft and/or on the shaft receptacle and is thus intended for at least substantially force-fitting and optionally also form-fitting support with respect to an axial displacement, wherein a conical pressure fit or similar connection which produces a form fit at a macro level can be additionally provided. The invention also relates to a corresponding intermediate element having a laser-structured surface for such an intermediate element assembly, to a method for the production thereof, and to the use thereof in planetary gear systems, in particular for wind turbines.
Absstract of: CN119895142A
A support structure for a wind turbine (100), the support structure comprising:-a rotor bearing housing (201), where the rotor bearing housing (201) is configured to accommodate a rotor bearing (250) for rotatably supporting a rotor shaft (114); -a base (202) wherein the base (202) is configured to be rotatably mounted on a top (103) of a tower (102) of the wind turbine (100) at a first end (203) of the base (202) wherein the base (202) is configured to be mounted with the rotor bearing housing (201) on a second end (204) of the base (202) wherein the base (202) comprises a side wall (205) extending between the first end (203) and the second end (204), and the side wall (205) comprises a passage opening (206) for people to pass through.
Absstract of: AU2023346225A1
Shaftless vertical-axis wind turbine, comprising a hub (3) and a plurality of C-shaped blades (20), wherein each blade (20) comprises: a lower radial airfoil (221) arranged on the inner frame (120) at a lower radial portion (21) of the blade, a vertical airfoil (223) arranged on the inner frame (120) at a vertical portion (23) of the blade, and an upper radial airfoil (222) arranged on the inner frame (120) at an upper radial portion (22) of the blade, wherein at least one portion of the vertical airfoil (223) of each blade (20) is rotatable about a relevant axis of rotation, in a manner that is independent from the homologous portions of the vertical airfoil (223) of the other blades (20), to adjust the angle of attack or the curvature of the relevant vertical airfoil (223).
Absstract of: CN119923521A
The invention relates to a drive train (14) for a wind turbine (10), having a transmission (18) for transmitting and converting a torque originating from a rotor shaft (16) of a rotor (12), the transmission (18) having an input transmission element, in particular a planet carrier (32), which is not supported at least on the rotor side and serves to introduce the torque into the transmission (18), and having a coupling unit (46) for coupling the input transmission element to the planet carrier (32). The coupling unit (46) is designed to be separated from the rotor shaft (16) and from the transmission (18) and is used for coupling the rotor shaft (16) to the input transmission component in a torque-transmitting manner, and the coupling unit (46) is provided with a bearing (48) which is used for supporting the unsupported input transmission component in the coupling unit (46). By adapting the bearings of the input transmission components in individually designed coupling units (46) to different demand profiles, alteration of the structure of the transmission (18) can be avoided, thereby enabling a cost-effective driveline (14) for different wind turbines.
Absstract of: WO2024061588A1
The method is for operating a wind turbine (100) having a rotor (10) with at least one rotor blade (1, 2, 3), a tower (20) and a pitch setting system (13). The method comprises a step of providing first information which is representative for the tilt bending moment acting on the rotor. In another step, second information is provided which is representative for the thrust force acting on the rotor. In yet another step, third information is provided which is representative for a critical area of thrust forces and tilt bending moments. In another step, fourth information is determined depending on the first, the second and the third information. The fourth information is representative for whether the tilt bending moment and the thrust force lie within the critical area. I f this is the case, an output signal is generated which is configured to cause the pitch setting system to change the pitch angle of the at least one rotor blade in order to leave the critical area.
Absstract of: CN119894765A
The invention relates to a floating support structure (2-1) for an offshore wind turbine, comprising: a lower connector (4) centered on the axis (X-X) of the mast (9) of the wind turbine, said lower connector (4) comprising at least three lower receiving grooves (10) uniformly distributed around the axis of the mast of the wind turbine; an upper connector (6) centered on the axis of the mast of the wind generator, the upper part of which comprises means (14) for receiving the mast of the wind generator and the lower part of which comprises at least three upper receiving grooves (12) uniformly distributed around the axis of the mast of the wind generator; and at least three identical tubular central posts (8), the lower end of which is fitted in one receiving groove of the lower connector and the opposite upper end of which is fitted in one receiving groove of the upper connector (so as to form a floating support tower adapted to the vertical extension of the mast of the wind turbine). The invention further relates to an assembling method of the structure.
Nº publicación: EP4590959A1 30/07/2025
Applicant:
SJK ENERGY SOLUTIONS LLC [US]
SJK Energy Solutions, LLC
Absstract of: MX2025003430A
A fluid flow turbine blade assembly for a turbine rotor includes a blade and a deflector extending spanwise along at least a portion of the blade. At least a portion of an upstream surface of the deflector, along at least a portion of a span of the deflector, has a concave shape in a chordwise direction such that at least a portion of a chord line between leading and trailing edges of the deflector is disposed outside a profile defined between the upstream surface and a downstream surface of the deflector. The deflector has a substantially uniform thickness or a chord-wise varying thickness between the upstream surface and the downstream surface. The deflector alters fluid flow over the blade so as to increase the blade's contribution to global torque generated by the assembly so that, with the deflector's torque contribution, the global torque of the assembly is greater than the global torque that would be generated by the blade alone without the benefit of the deflector.
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