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8182221 |
Turbine blade with tip sealing and cooling
A turbine rotor blade with a tip region cooling and sealing circuit that includes a squealer tip with a continuous tip rail, the pressure side tip rail being offset from the pressure side wall, the...
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8177505 |
Method for measuring a rotational position of a rotor blade of a wind turbine and measuring device
The present disclosure is related to a method and a measuring device adapted for determining a rotational position of at least one rotor blade of a wind turbine. The method includes a step of...
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8172530 |
Pitch change actuation system for a counter-rotating propeller
A system for adjusting the pitch of a counter-rotating propeller has a propeller shaft, a forward propeller driven by the propeller shaft, and an aft propeller connected with the forward propeller....
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8172529 |
Method of operation of a high-efficiency turbine with variable attack angle foils
Operations of a turbine to generate energy from a relatively slow fluid flow, such as wind and water, are described. The turbine has a plurality of foils rotating about a central axis at a...
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8172532 |
Device for adjustment of a rotor blade, wind energy converter, and method for adjusting a rotor blade
A method for adjusting a pivotally mounted rotor blade of a wind energy converter includes controlling a first drive and a second drive to collectively turn the rotor blade into an operating...
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8174137 |
Method for the damping of tower oscillations in wind power installations
A method for controlling a wind turbine installation for the damping tower oscillations, in particular a buoyant wind turbine installation comprising a buoyant body, a tower arranged over the...
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8167569 |
Structure and method for self-aligning rotor blade joints
An inventive self-aligning blade joint structure is provided to facilitate assembly and clamping of wind turbine blade sections carried on a transporter. The blade joint structure includes...
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8167553 |
Electrical system for driving a propeller pitch change mechanism
A system adjusts the pitch of a variable pitch propeller having a non-rotating side and a rotating side. The rotating side of the propeller has a hub, a propeller blade mounted to the hub, a...
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8162608 |
Wind turbine, yaw system controller and yaw system for a wind turbine and method of reducing the loads acting on such a yaw system
Wind turbine, yaw system controller and yaw system for a wind turbine and method of reducing the loads on such a yaw system. A method for reducing the loads acting on a wind turbine yaw system (19)...
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8162606 |
Helicopter hub mounted vibration control and circular force generation systems for canceling vibrations
A rotary wing aircraft including a vehicle vibration control system. The vehicle vibration control system includes a rotating hub mounted vibration control system, the rotating hub mounted...
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8161822 |
Placement of strain sensors in wind turbine blade
A method of monitoring strain on a wind turbine blade that has several structural components comprises locating at least three strain sensors (2a, 2b, 2c) on one of the structural components of the...
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8157533 |
Wind turbine blade with variable aerodynamic profile
A wind turbine blade comprising an active elastic member arranged with access to the surface of the wind turbine blade is provided. The active elastic member is deformable from a first shape to a...
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8157521 |
Wind turbine generator and method of controlling the same
There is provided a wind turbine generator and a method of controlling the same which can prevent the decline in power generation efficiency even when the generator is located where the wind is not...
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8154235 |
Electric drive
An electric drive has at least one electric motor and a power converter feeding electrical motor current thereto. A current desired-value emitter generates a reference signal. An additional circuit...
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8152436 |
Blade under platform pocket cooling
Inlets are provided at a front end of inter-blade cavities for allowing coolant to flow therein to cool down the undersurface of the blade platforms as well as the rim of the disc of a rotor assembly.
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8152463 |
Method for impingement air cooling for gas turbines
In impingement air cooling of gas turbine components, cooling air velocity packs of a certain amplitude and a given frequency are applied to impingement air openings, with intervallic annular swirl...
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8142153 |
Turbine vane with dirt separator
A turbine stator vane with a cooling circuit that improves the cooling effectiveness of the airfoil as well as collects any dirt particles before passing the clean cooling an through the cooling...
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8133023 |
Wind turbine with variable area propeller blades
An apparatus and method for reducing wind turbine damage includes a propeller having a plurality of blades projecting radially from a hub. The blades may be adjustably combined to form variable...
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8133024 |
Turbine blade with root corner cooling
The turbine rotor blade with an aft flowing serpentine flow cooling circuit that discharges into a trailing edge cooling circuit and then into a row of exit cooling slots to cool the trailing edge,...
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8133027 |
Integrated actuator for a propeller system
A propeller system includes a propeller hub which supports a multiple of propeller blades. A tailshaft extends from a propeller hub portion of the propeller hub along an axis of rotation with a...
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8128362 |
Method of operating a wind turbine, a wind turbine and a cluster of wind turbines
A method of operating a wind turbine above a predefined wind velocity comprising the step of operating a control parameter of the wind turbine within a tolerance band from a reference set-point...
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8128361 |
Control modes for extendable rotor blades
A wind turbine may be controlled in a variety of manners to optimize operating parameters. In one arrangement, for example, the length or the pitch of a wind turbine rotor blade may be adjusted to...
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8131402 |
System for detecting proximity between a wind turbine blade and a tower wall
A sensor system monitors deflection of turbine blades of a wind turbine. The system includes a first component configured on the turbine blades. A second component is configured on the tower at a...
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8123207 |
Nacelle lifting tool and method
A nacelle lifting tool and method for lifting the nacelle of a wind generator in relation to the rotating ring. The inventive tool is formed by first and second fixing devices which replace brake...
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8123476 |
Method for regulating a wind energy installation
A method of operating installations (10), in particular wind energy installations (10), having a component (22) which endangers flying animals, in which the component assumes a first state which...
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8123478 |
Systems and methods for monitoring a condition of a rotor blade for a wind turbine
A method for monitoring a condition of a rotor blade of a wind turbine is provided. The method includes transmitting, from a sensor to a controller, at least one monitoring signal indicative of a...
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8123477 |
Control of rotor during a stop process of a wind turbine
A method for controlling a wind turbine rotor during a stop process by pitching the rotor blades fast, e.g. with an angular rate of 10-15°/s to a no-thrust position, after which the rotor blades ...
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8118552 |
Apparatus and method for manipulating a component of a wind turbine
A wind turbine includes a tower member a yaw system, and a wind energy collection system. The wind energy collection system includes a central hub and a plurality of blade members. The wind turbine...
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8113776 |
Reduced-impedance cooling system with variable pitch blade and hot-swappable spare
A method of operating variable pitch fans in series to cool an operating computer system. The method comprises running a first variable pitch fan with blades positioned at an operational pitch to...
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8109723 |
Device and method for controlling wind turbine
In a conventional technique, a shutdown sequence indicating a sequential operation from a start of the feathering of a wind turbine to the stop is started in response to an alert signal caused by...
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8109722 |
Turbine and system for generating power from fluid flow and method therefor
A turbine for use with a turbine generator, the turbine including at least one turbine blade for positioning in a flowpath, a hub mounting the at least one turbine blade, and a rotatable shaft in...
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8112252 |
Control system and methods of verifying operation of at least one wind turbine sensor
A method of verifying operation of at least one wind turbine sensor includes dynamically defining a neighborhood of neighbor wind turbines for a first wind turbine, each neighbor wind turbine...
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8109733 |
Variable speed hub
A method of adjusting the speed of blades rotating in a rotor plane on a wind turbine, wherein the angle between at least two blades in the rotor plane is changed, whereby the tip speed of each...
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8105028 |
Systems and methods for mitigating the effects of wind turbines on radar
A control system for mitigating the effects of a wind turbine on a radar system is disclosed. The control system includes a sensor configured to detect an operating condition of the radar system; a...
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8100648 |
Submersible rotor design
An improved rotor blade used in combination with a submersible electrical generator comprises a rotor base with width BW, a leading edge, a tip, and a trailing edge. The leading edge and the...
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8100647 |
Method for operating a wind turbine, a wind turbine and use of the method
A method for operating a wind turbine having a rotor with a number of wind turbine blades, wherein the rotor's axis of rotation is tilted in relation to the direction of the incoming wind, includes...
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8096762 |
Wind turbine with pitch control arranged to reduce life shortening loads on components thereof
A wind turbine is presented where the operation lifetime of the main bearing is extended by relieving the main bearing by reducing the mean bending moment on the bearing by means of individual...
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8096764 |
System for rotating a wind turbine blade
A system for driving a wind turbine blade (46) into a feathered position during an emergency stopping process of a wind turbine rotor. The system comprises a hydraulic actuator (3) functionally...
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8096761 |
Blade pitch management method and system
A method for operating a wind turbine. The method includes providing a wind turbine having at least one blade having adjustable pitch angle that is adjusted according to an operational parameter...
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8092173 |
Wind turbine control method
A method of controlling a wind turbine, where a control signal for a controllable parameter of the wind turbine is determined repeatingly at successive time steps, and a control history including...
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8092171 |
Systems and methods for assembling a pitch assembly for use in a wind turbine
A method of assembling a wind turbine. The method includes coupling a pitch bearing to a hub that includes a wall. The pitch bearing includes a plurality of sets of pitch bearing teeth. At least...
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8092172 |
Method for operating a wind turbine with reduced blade fouling
A method of operating a wind turbine is provided. The wind turbine has at least one rotor blade and an active flow control (AFC) system. The at least one rotor blade has at least one aperture...
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8087872 |
Steam seal system
The present application provides a variable steam seal system for use with a steam turbine. The variable steam seal system may include a seal steam header, a first pressure section, a first...
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8087891 |
Turbine blade with tip region cooling
A turbine blade with a tip region cooling circuit in which cooling air from a serpentine flow circuit in the main airfoil body passes into the tip cooling circuit and around the suction side and...
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8083481 |
Method for siting and operating a crop protection wind machine array
A system for arranging and operating an array of wind machines to protect crops from damaging weather conditions, such as freezing frost, rain and heat. The method includes a wind machine...
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8070437 |
Method for damping edgewise oscillations in one or more blades of a wind turbine, an active stall controlled wind turbine and use hereof
A method for damping edgewise oscillations in one or more blades of a wind turbine includes the steps of detecting if one or more of the blades oscillates edgewise during operation of the wind...
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8070443 |
Turbine blade with leading edge cooling
A turbine rotor blade with a leading edge region cooled by a series of impingement cooling cavities that repeats from near the platform to the blade tip to provide impingement cooling for the...
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8070436 |
Cooling airflow modulation
A gas turbine engine airfoil (22) has a wall (42) provided with a cooling effusion hole (40) therein to facilitate film cooling of the external surface (52) of the wall (42). A member (46) attached...
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8066478 |
Preventing hot-gas ingestion by film-cooling jet via flow-aligned blockers
A system for cooling includes a surface to be cooled, at least one film-cooling hole within the surface for allowing a film cooling jet of coolant to reach the surface, each of the at least one...
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8066472 |
Method and apparatus for fan shaft bearing lubrication
A lubrication system for a bearing assembly includes a fan shaft with a plurality of conduits, a first bearing rotatably supporting the fan shaft, and a second bearing rotatably supporting the fan...
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