Patent application number | Description | Published |
20090220629 | MOLDING APPARATUS INCORPORATING PRESSURE UNIFORMITY ADJUSTMENT - A molding apparatus comprises first and second mold chases that are configured to clamp an electronic device therebetween, and a driving mechanism which drives the first and second mold chases to apply a clamping force onto the electronic device. A pressure adjustment mechanism communicates with at least one of the mold chases and applies an additional clamping pressure onto one or more portions of the mold chase. The pressure adjustment mechanism comprises movable supports that are displaceable in directions which are substantially perpendicular to the direction of the clamping force so as to transmit and apply the said additional clamping pressure onto the mold chase, and also a plurality of piezoelectric actuators which are operative to apply displacement forces to the movable supports in their displacement directions. | 09-03-2009 |
20100134946 | LIGHTNING PROTECTION SYSTEM FOR WIND TURBINES - A system, method and software for protecting wind turbines from lightning strikes, as well as a wind turbine comprising the system for lightning protection, wherein at least one lightning strike protection element of said LSP system is ionized prior to a lightning strike, thus reducing the chance of damaging unprotected part(s) of the blade(s) of the wind turbine. | 06-03-2010 |
20100143124 | WIND TURBINE YAWING SYSTEM - In order to prevent minor deviations from expected operation in a yawing system before they lead to larger deviations, there is in accordance with a method aspect of the invention disclosed monitoring and determining deviation from an expected operation in a yawing system of a wind turbine. The method includes inputting a rotation angle input to at least one of a plurality of yaw motors, sensing an angular output of at least one of the plurality of yaw motors, receiving the rotation angle input to the at least one of the plurality of yaw motors in a signal processor, receiving the angular output of the at least one of the plurality of yaw motors, comparing at least two of the received signals, and/or comparing a mathematical relation of two of the received signals with a reference, and hereby determining whether there is any deviation from the expected operation. | 06-10-2010 |
20100148507 | METHOD FOR CONTROLLING THE OPERATION OF A WIND TURBINE AND A WIND TURBINE - A method for controlling the operation of a wind turbine includes determining a first measure of a mechanical input of a component of the wind turbine, and concurrently, determining a second measure of a mechanical output of the component, determining an operating frequency response function of the component from an analysis of the relation between the first measure and the second measure, comparing the operating frequency response function with a predetermined operating frequency response function and determining a possible deviation between the two, and controlling the operation of the wind turbine so as to alter the mechanical input to the component in response to the deviation. A wind turbine that implements such a method is also disclosed. | 06-17-2010 |
20100150704 | WIND TURBINE WITH A REFRIGERATION SYSTEM AND A METHOD OF PROVIDING COOLING OF A HEAT GENERATING COMPONENT IN A NACELLE FOR A WIND TURBINE - The invention provides a wind turbine wind turbine with two vessels, each being interchangeably in thermal communication with a heating medium which transfers heat from a heat generating structure to the vessel, and with a cooling medium which transfers heat from the vessel to an ambient space. The vessels form a compression structure which form part of a refrigerating circuit which can circulate a working fluid between the compression structure, a condenser and an evaporator. At the evaporator, cooling effect is obtained based on evaporation of a working fluid, and the cooling can be utilized for cooling a heat generating component in the wind turbine. | 06-17-2010 |
20100247314 | Wind Turbine Blade Comprising a Trailing Edge Flap and a Piezoelectric Actuator - A wind turbine blade comprises a main blade body and trailing edge section movably connected to the main blade body, and an actuator structure internally within the blade. The actuator interconnects the trailing edge section and the main blade body, and it comprises a stack of a plurality of piezoelectric elements, so that the stack of piezoelectric elements is capable of operating as a linear actuator. The actuator structure is arranged such that it is capable of causing the trailing edge section to move or deform relative to the main blade body in response to aerodynamic loads on the blade. The actuator structure is controllable by a control system applying a voltage to the stack of piezoelectric elements in response to, e.g., detected wind or load characteristics. | 09-30-2010 |
20100310372 | ACTUATION OF MOVABLE PARTS OF A WIND TURBINE ROTOR BLADE - A rotor blade for a wind turbine comprises a rotor blade body with a root for connecting the rotor blade to a hub of a wind turbine, a tip, a leading edge and a trailing edge. The blade has a movable part, and motion transmitting means for connecting to an actuator being placed preferably outside the blade body, and transmitting motion from the actuator to the movable part. The motion transmitting means is electrically non-conductive, whereby the risk of lightning stroke accidents is reduced. | 12-09-2010 |
20110148113 | VIBRATION DAMPING OF WIND TURBINE SHAFT - A damper which effectively dampens vibrations experienced by a shaft in a drive train of a wind turbine generator, such as a main shaft of the WTG, is disclosed. The damper includes a vibration sensor adapted to provide a vibration signal in response to the vibrations of the shaft, an electromagnet adapted to provide an electromagnetic force to the shaft, and a controller operably coupled to the vibration sensor and the electromagnet. The controller is adapted to generate command signals to provide a suitable drive current to the electromagnet in response to the vibration signal, and the electromagnet is adapted to provide an electromagnetic force to the shaft and thereby actively dampen the vibrations of the shaft. | 06-23-2011 |
20110285129 | WIND TURBINE AND A METHOD FOR MONITORING A WIND TURBINE - According to the inventive concept, there is provided a wind turbine with at least one blade. The wind turbine comprises a first accelerometer mounted at a first radial position of the blade and being adapted to determine a first acceleration value, and a second accelerometer mounted at a second radial position of the blade different from the first radial position, and the accelerometer being adapted to determine a second acceleration value. The wind turbine further comprises a controller adapted to generate a signal based on said first and second acceleration values. There is also provided a method for monitoring a blade of a wind turbine. | 11-24-2011 |
20120025537 | WIND TURBINE NACELLE WITH COOLER TOP - The present invention relates to a wind turbine nacelle comprising a front end facing a wind flow and a rear end arranged downwind from the front end; a first face with a longitudinal extension between the front end and the rear end of the nacelle, the longitudinal extension of the nacelle having a total length; a velocity boundary layer, which is created by the wind flow along the first face from the front end to the rear end, the velocity boundary layer increasing in thickness along the first face and the thickness being lowest at the front end; and a free flow cooling device extending from the first face of the nacelle, the free flow cooling device comprising a cooling area. Furthermore, the cooling area is arranged in relation to the thickness of the velocity boundary layer. | 02-02-2012 |
20120061047 | WIND TURBINE NACELLE WITH COOLER TOP - The present invention relates to a wind turbine nacelle having a top face with a longitudinal extension in a wind direction. The nacelle comprises a cooling device having a cooling area and extending from the first face of the nacelle, and a cover having at least one inner face and at least a front edge facing the wind direction. The cooling device is enclosed by the first face of the nacelle and the inner face of the cover and is arranged in a front distance of at least 440 mm from the front edge of the cover. | 03-15-2012 |
20120063890 | WIND TURBINE NACELLE WITH COOLER TOP - The present invention relates to a wind turbine nacelle having a first face with a longitudinal extension in a wind direction, comprising a cooling device having a cooling area and extending from the first face of the nacelle, and a cover having at least one inner face, the cooling device being enclosed by the first face of the nacelle and the inner face of the cover. A first distance between at least one of the faces and the cooling area is at least 30 mm. | 03-15-2012 |
20120070283 | HINGED CONNECTION APPARATUS FOR SECURING A FIRST WIND TURBINE COMPONENT TO A SECOND - A hinged connection apparatus is described for securing a first wind turbine component to a second. The first wind turbine component may be a wind turbine blade ( | 03-22-2012 |
20120070284 | HINGE APPARATUS FOR CONNECTING FIRST AND SECOND WIND TURBINE BLADE COMPONENTS COMPRISING A ROTARY ACTUATOR - A hinged connection apparatus is described for securing a first wind turbine blade component to a second. The first wind turbine component may be a wind turbine blade body ( | 03-22-2012 |
20120086215 | WIND TURBINE NACELLE WITH COOLER TOP - The present invention relates to a wind turbine nacelle having a top face with a longitudinal extension in a wind direction, comprising a cooling device extending from the top face of the nacelle and a cover having at least one inner face. The cooling device is enclosed by the top face of the nacelle and the inner face of the cover. | 04-12-2012 |
20120093651 | WIND TURBINE BLADE HAVING A HINGED CONNECTION APPARATUS PROVIDING ELECTRICAL PROTECTION - A hinged connection apparatus is described for securing a first wind turbine component to a second. The first wind turbine component may be a wind turbine blade and the second wind turbine component may be a control surface such as an aileron. The first or second wind turbine component comprises at least one hinge housing ( | 04-19-2012 |
20120235421 | WIND TURBINE NACELLE COMPRISING A HEAT EXCHANGER ASSEMBLY - A heat exchanger assembly for cooling a heat-generating component, such as a generator or power electronics module, within a wind turbine nacelle comprises a thermoelectric element, such as a Peltier element, having a first section arranged in a first region of relatively high temperature in contact with the heat-generating component or in the vicinity thereof, and a second section arranged in a second region of a relatively low temperature. The thermoelectric element is configured to transfer heat from the first region of relatively high temperature to the second region of relatively low temperature with consumption of electrical energy. A source of electrical energy is provided for the thermoelectric element, and a control unit may be provided for controlling the energy supply in order to control the temperature of the component or surface area cooled by the thermoelectric element. A further cooling element including a so-called heat pipe may be provided to enhance cooling efficiency. | 09-20-2012 |
20120269645 | WIND TURBINE COMPONENT HAVING AN EXPOSED SURFACE MADE OF A HYDROPHOBIC MATERIAL - The invention provides a wind turbine component having an exposed surface made of a hydrophobic material and having a surface texture providing a Water Contact Angle (CA) of at least 150. Due to the combination between a CA over 150 and the hydrophobic material, the component becomes less vulnerable to ice formation etc. The invention further provides a method of preventing ice formation, a method of reducing noise and a blade for reducing noise from a wind turbine. | 10-25-2012 |
20130040151 | METHOD FOR JOINING FIBRE-CONTAINING COMPOSITE MATERIALS - The present invention relates to methods for joining and for improving interfacial strength of joints in objects of fibre-containing composite materials, such as epoxy/glass fibre composite materials of a wind turbine blade, as well as fibre reinforced composite materials, laminates and other interconnected objects prepared by this method. In particular wind turbine blades prepared by this method are described. The present invention further relates to robots and robotic tools for carrying out the described methods for joining objects of fibre-containing composite materials. | 02-14-2013 |