Entries |
Document | Title | Date |
20080199314 | Wind driven power system - A wind driven power system employing multiple arms adapted to rotate about a central structure, each arm having a series of panels pivotally connected thereto and adapted to open and close as the system rotates to perpetuate the rotational movement and to produce energy. | 08-21-2008 |
20080273975 | Sail Wing Type Windmill - A sail wing type windmill includes an output shaft erected vertically, a foundation with a bearing disposed in the center hole provided therein for supporting the output shaft; an axle body with a roller bearing on the top end, while the bottom end thereof being conjoined to the output shaft, and the external surface thereof being formed of several spigots, and provided with an upper and a lower joint flanges; and a rudder assembly turnably conjoined to the top end of the output shaft and consisting of a turn table and a twin vaned tail wing; wherein the turn table is inserted in the center hole of the axle body, the external surface of the turn table is provided with a snaking recessed lead rail terminated into a lead portion. The twin vaned tail ring can automatically and constantly point to the wind direction so as to turn the turn table with the wind force. | 11-06-2008 |
20080304962 | Driving device for raising or lowering an airfoil - A wind turbine assembly with a driving device for raising and lowering a wind turbine between a lower end and an upper end of a wind turbine tower comprises a guide member extending longitudinally along the outer surface of the tower, a sleeve member coupled to the wind turbine, and means for raising and lowering the sleeve member between the upper end and the lower end of the tower along the guide member. The sleeve member has an inner diameter that is larger than an outer diameter of the tower, and is slidably coupled to the tower. The sleeve member also includes a slot configured to engage with the guide member. | 12-11-2008 |
20080317598 | Power loss reduction in turbulent wind for a wind turbine using localized sensing and control - A wind turbine blade assembly includes at least one local load sensor disposed on and/or within a surface of the wind turbine blade and at least one active flow modification device disposed on and/or within a surface of the wind turbine blade and configured to alter the aerodynamics of the wind turbine blade in response to real time local load sensor measurements such that a difference between a current angle of attack and an optimum angle of attack on the wind turbine blade is substantially minimized. | 12-25-2008 |
20090047129 | Horizontal axis wind turbine - Disclosed a horizontal axis wind turbine including: a rotor; a nacelle; a tower; an independent pitch control device; and a yaw control device, wherein the horizontal axis wind turbine is an up-wind type one including a waiting mode, wherein (1) the independent pitch control device performs a first step of changing all the blades to be in feathering states when the wind speed exceeds the predetermined value, a second step of changing the blades to be in reverse feathering states one by one sequentially, and a third step of holding all the blades in the reverse feathering states, and (2) the yaw control device controls a yaw brake to take a braking value allowing the yaw rotation when the wind speed exceeds the predetermined value, wherein the rotor is allowed to swing a leeward of the tower by executing the control operations (1) and (2) as the waiting mode. | 02-19-2009 |
20090068012 | Teeter-restraint device for wind turbines - A wind turbine system includes a shaft, a rotor for driving the shaft, and a first fluidic teeter control assembly. The rotor includes a first blade engaged to the shaft by a hub, and has a degree of freedom to pivot relative to the shaft. A first teeter angle is defined between an instantaneous position of the first blade and a time-averaged plane of rotation of the first blade. The first fluidic teeter control assembly is engaged between the rotor and the shaft for providing a first dynamic teeter restraining force as a function of the first teeter angle and a fluidic resistance. The first dynamic restraining force is relatively low when the first teeter angle is within a first teeter operation range, and the first dynamic restraining force is higher when the first teeter angle is outside that range. | 03-12-2009 |
20090087311 | Vertically Adjustable Horizontal Axis Type Wind Turbine And Method Of Construction Thereof - The invention relates to methods of constructing and operating a wind turbine, said methods comprising the steps of lifting a wind turbine nacelle and tower sections with the use of an external lifting system, and using a lifting system to propel said nacelle vertically up and down said tower sections. The external lifting mechanism comprises a guide rail and guide car onto which tower sections are loaded for horizontal movement, a foundation structure joined to a tower section hoist mechanism containing clamps, and a nacelle holding mechanism. A nacelle includes a tower penetrating hole through which said tower vertically penetrates. Tower sections are provided with a plethora of guide rails positioned around said tower extending from the lower end to the upper end of said tower sections, said guide rails contain removable toothed racks meshing with said lifting system to propel said nacelle vertically up and down said tower sections. | 04-02-2009 |
20090123283 | Turbine yaw control - A KHP system turbine for the production of energy in an underwater environment including a yaw stop arrangement for use in flowing steams where the flow direction of water therein is changeable, including bi-directional and multi-directional current flows, so that a rotatably mounted turbine remains in an optimal position within such changing flow conditions. The KHP turbine includes a rotational portion and one or two passive yaw stop assemblies that will control turbine yaw and keep the turbine oriented to capture energy from changeable underwater current flows. | 05-14-2009 |
20090142192 | WIND TURBINE METROLOGY SYSTEM - A wind turbine and system for controlling a wind turbine using a nosecone mounted metrology system is disclosed. The wind turbine comprises at least one wind sensor for determining at least one wind characteristic. The wind sensor is mounted on a boom and located at a predetermined distance outward from the wind turbine nosecone. | 06-04-2009 |
20090162198 | MULTI-BLADE FAN - A multi-blade fan including a spirally-shaped casing having an inlet and an outlet; an electric motor disposed inside the casing; a main plate provided perpendicular to a rotation axis of the electric motor and having a ventilation hole; first blades disposed at a side of the inlet of the main plate; and second blades disposed at an opposite side of the inlet of the main plate. Herein, a diameter of the main plate is smaller than an outer diameter of the first and second blades and is larger than an inner diameter of them. Furthermore, an outlet angle of any one or both of the first blade and the second blade is sequentially changed in an axis direction. | 06-25-2009 |
20090191056 | WIND HARNESSING SYSTEM - A wind harnessing system comprises a substantially helical structure including at least a portion of a spiraling groove and at least one energy converter positioned at least partially within the portion of the spiraling groove. In other embodiments, wind grooves formed by adjacent bands which are fixed with respect to one another, carry energy converters which are moveable with respect to these fixed bands. | 07-30-2009 |
20090202346 | Vertical Axis Wind Turbine - A vertical axis sail-type wind turbine includes an array of sail-like structures that are mounted on rotating main masts. The sail-like structures can be oriented to interact with the wind. For example, when the sail-like structures are moving in a downwind direction, they are oriented to present a flat surface that is perpendicular to the wind direction. On the other hand, when the sail-like structures are moving in an upwind direction, they are oriented to present a surface that is at an angle that creates an upwind vector. The sail-like structures rotate about the sail masts, which are rotatably mounted to sail mounting arms that are firmly mounted to a main mast. The main mast rotates, transferring power through a gear and shaft drive to hydraulic pumps in the tower. This hydraulic fluid pressure is then used to drive an electrical generator. | 08-13-2009 |
20090257874 | Vertical axis windmill with weather vane positioning - Large flat blades are put on the ends of long lever arms to maximize the torque produced at a central vertical shaft. Pivoting each blade on its own axis allows it to be positioned to best advantage as it rotates around the central vertical shaft. The positioning is accomplished by gearing the blade to a central control gear. By simply attaching a weather vane to the central control gear, the direction of the entire windmill is controlled. | 10-15-2009 |
20100092289 | SYSTEMS AND METHODS INVOLVING WIND TURBINE BEARING DETECTION AND OPERATION - A method for determining a bearing of a wind turbine comprising, receiving a signal from a satellite at a first antenna disposed on a wind turbine, receiving the signal from the satellite at a second antenna disposed on the wind turbine, determining a position of the first antenna responsive to receiving the signal, determining a position of the second antenna responsive to receiving the signal, calculating a line of bearing intersecting the position of the first antenna and the position of the second antenna, determining an angle of the line of bearing relative to a reference bearing, and defining the bearing of the wind turbine as the angle of the line of bearing relative to the reference bearing. | 04-15-2010 |
20100092290 | Vertical axis variable geometry wind energy collection system - A device to convert the kinetic energy of wind into kinetic energy in the form of a rotating mass (FIG. | 04-15-2010 |
20100135797 | 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 further includes a component manipulating system operatively coupled between at least one of the plurality of blade members and the tower member. The component manipulating system includes a blade member support structure including a first end pivotally connected relative to the tower member that extends to a second end operatively coupled to the one of the plurality of blade members, and a winching system operatively connected to the one of the plurality of blade members and the tower member. The winching system is selectively operated to shift the one of the plurality of blade members relative to the tower member in order to enable serving of the wind turbine. | 06-03-2010 |
20100221109 | WIND TURBINE BLADE SUPPORT STRUCTURE - A wind turbine apparatus includes a unit structure that is coupled to a central hub by way of an in-tension cable. The unit structure includes a first set of struts, wherein each strut in the first set of struts includes first and second ends, the first ends of the first set of struts are coupled to a first node and the first set of struts extend from the first node towards the central hub. The unit structure also includes a second set of struts, wherein each strut in the second set of struts includes first and second ends, the first ends of the second set of struts are coupled to the first node and the second set of struts extend from the first node away from the central hub. | 09-02-2010 |
20110033293 | Retractable Wind Turbine - The disclosure provides a retractable wind turbine apparatus for generating power. When required, the mast and blades of the retractable wind turbine apparatus are designed to retract and become non-visible to an observer. The retractable wind turbine apparatus will enable power generation in locations where aesthetic issues are of a concern. Power generation may be stopped during designated periods such as tourist season or daylight hours. In these situations, the wind turbine apparatus will be retracted and hidden from view. | 02-10-2011 |
20110044815 | Stream Energy Extraction Device - A stream energy extraction device including endless ropes running around sheaves, there being connected, along at least one rope, submerged sail- or vane-like elements. Flowing water causes the sail- or vane-like elements to be moved through the water, whereby at least a portion of the stream energy of the water is transmitted to the rope. A channel encloses at least a portion of the rope that is traveling in an upstream direction. | 02-24-2011 |
20110070083 | Streamlined Wind Turbine Optimized for Laminar Layer - A wind turbine body and a wind turbine are disclosed. The wind turbine body has a curved body and a plurality of blades. The curved body includes a front portion, a rear portion, and a middle portion between the front portion and the rear portion. The curved body is configured such that at least the middle portion rotates about an axis of rotation. A diameter of the curved body gradually increases from the front portion to the middle portion, and gradually decreases from the middle portion to the rear portion. The blades are attached to and around the middle portion about the axis of rotation. The blades are configured to convert an airflow into rotational motion of the middle portion. The wind turbine includes a wind turbine body and a fin at the rear portion. The fin is configured to steer the wind turbine about a steering axis so that the front portion faces the airflow. | 03-24-2011 |
20110142626 | SERVICEABLE YAW BRAKE DISC SEGMENTS WITHOUT NACELLE REMOVAL - A wind turbine yaw brake apparatus includes a circular rotation support base having an inner and an outer cylinder wall. The circular rotation support base is mounted to a top face of a wind turbine tower and a nacelle such that the nacelle can rotate relative to the wind turbine tower. A plurality of brake lining elements are removably mounted to the circular rotation support base. A disc brake unit acts upon the brake aligning elements. | 06-16-2011 |
20110171026 | Gear Assembly and Wind Turbine - A gear assembly is disclosed. The gear assemble includes a ring gear and at least one pinion gear. The ring gear includes a surface which is coated with an abrasion resistant coating and the surface of the at least one pinion gear has a lower hardness than the surface of the ring gear. | 07-14-2011 |
20110211955 | Wind turbine - A wind turbine having a nacelle being rotatably disposed on a tower is proposed. The nacelle has a first cavity, a generator housing portion disposed upstream to the nacelle having a second cavity, a hub disposed upstream to the generator housing portion with attached rotor blades at it having a third cavity. The first, second and third cavities communicates with one another. A rail-system has at least one rail-element having a device for lifting and/or transporting. The device for lifting and/or transporting is movable along the rail-system. The rail-system at least partially extends through at least two adjacent cavities. | 09-01-2011 |
20110211956 | PARALLEL-CONNECTED MATRIX INTEGRATED WIND POWER GENERATION SYSTEM - A parallel-connected matrix integrated wind power generation system, which includes: a plurality of Savonius wind turbines and a plurality of phase angle positioning components among wind turbines and a plurality of distance positioning components among wind turbines; meanwhile, the phase angle positioning components among wind turbines also have the function to transfer the mechanical energy of wind turbine, and the plurality of Savonius wind turbines are arranged in parallel way; the distance positioning components among wind turbines are connected to those plurality of Savonius wind turbines so that fixed distances are maintained among the plurality of Savonius wind turbines; moreover, the phase angle positioning components among wind turbines are connected to the plurality of Savonius wind turbines so that fixed phase angle differences are maintained among the plurality of Savonius wind turbines; furthermore, Savonius wind turbine of this system is further installed with flow-guiding plate, and the structural cross-section of flow-guiding plate is in between Clark Y and NACA 0015, which is calculated and decided according to real wind field CFD; furthermore, the flow-guiding plate can be used to adjust the force taken by different phase angle of the plurality of Savonius wind turbines, which is helpful to the enhancement the space utilization efficiency of wind field and the reinforcement of energy collection efficiency of wind power, that is, the wind power generation efficiency of integrated wind power generation system of a plurality of Savonius wind turbines can be greatly enhanced; moreover, this system is also applicable to parallel-connected and integrated wind power generation system that modifies Savonius wind turbine from two-bladed type to three-bladed type or multi-bladed type wind turbine. | 09-01-2011 |
20110299986 | HORIZONTAL AXIS WIND TURBINE APPARATUS - The object of the invention is to provide a control apparatus C of a horizontal axis wind turbine apparatus WTG that calculates the value en of a pitch angle command for each blade based on the rate of change ΨD of the azimuth angle Ψ of a Nacelle N and the rotor azimuth angle φ of the blades B | 12-08-2011 |
20120009063 | WIND TURBINE GENERATOR - Provided is a wind turbine generator in which, the specifications of the gears can be designed for the level of a maximum load during driving without decreasing the necessary strength and durability. A wind turbine generator in which a nacelle is installed at an upper end of a tower that is vertically erected on a foundation includes a yaw driving unit that yaws the nacelle and/or a pitch driving unit that controls pitch angles of the wind turbine blades, wherein a drive mechanism of the yaw driving unit and/or the pitch driving unit, which are equipped with an engaging portion of a slewing bearing ( | 01-12-2012 |
20120045332 | VERTICAL AXIS WIND TURBINE - A turbine head comprising: a rotatable member; a plurality of laminar blades each including a surface, the blades being rotatably mounted to the rotatable member such that the blades can each rotate relative to the rotatable member from a first position to a second position, the angle between the first and second positions being less than 180 degrees; wherein each blade is rotatably mounted to the rotatable member about an axis that is near the centre of the blade such that, if a force is applied to the blade in a direction that is perpendicular to the surface, the difference in force between the force exerted on a portion of the surface on one side of the axis and the force exerted on a portion of the surface extending to the other side of the axis is sufficient to cause the blade to rotate from the first position towards the second position. | 02-23-2012 |
20120177492 | WIND TURBINE - Disclosed is a wind turbine having a nacelle ( | 07-12-2012 |
20120189444 | WIND TURBINE BLADE AND A PITCH CONTROLLED WIND TURBINE - The invention relates to a wind turbine blade comprising one or more turbulence generating strips, where the strips are placed on a surface of the blade. The blade is characterized in that at least one joint area of the turbulence generating strips and the surface of the blade are completely or partially covered by sealing means. The invention further relates to a pitch controlled wind turbine comprising at least two pitch controlled wind turbine blades and pitch controlling means for pitching the blades. The pitch controlled wind turbine is characterized in that the blades comprises one or more turbulence generating strips, wherein at least one joint area of the turbulence generating strips and a surface of the blades are completely or partially covered by sealing means. | 07-26-2012 |
20120189445 | ROTOR FOR A WIND TURBINE - The present disclosure relates to a rotor for a wind turbine ( | 07-26-2012 |
20120201677 | WIND TURBINE GENERATOR WITH A LIFTING DEVICE - A more efficient and simple wind turbine generator with a lifting device and method of using the lifting device is disclosed. A wind turbine generator comprises a tower, a nacelle supported by the tower, the nacelle comprising a foundation supporting components of the nacelle, a yawing system comprising a yaw bearing enabling rotation of the nacelle relative to the tower, a lifting device internally in the wind turbine generator and capable of moving an item, a support supporting the lifting device, and wherein the lifting device is moveable in a horizontal direction from a first position to a second position, and at least one of the positions is, in a vertical direction, between a lowermost level of the foundation, such as just above the yaw bearing, and an uppermost level of the tower, such as just below the yaw bearing. | 08-09-2012 |
20120207601 | Rotor having a Lower Resistance or Drag - A rotor for a generating system includes a drive shaft, a plurality of support frames mounted on the drive shaft to rotate the drive shaft, and a plurality of blades each pivotally mounted on a respective one of the support frames. When the power touches the blades, the blades are pushed to pivot such that some of the blades are moved to abut the drive shaft and some of the blades are moved to be parallel with the travel direction of the power. Thus, the blades that are moved to abut the drive shaft will be pushed by the power to rotate the drive shaft, while the blades that are moved to be parallel with the power will not produce a drag or resistance to the power. | 08-16-2012 |
20120224963 | GREASE COLLECTOR, WIND TURBINE NACELLE AND METHOD FOR COLLECTING EXCESS GREASE - A grease collector is described, which is connectable to a wind turbine nacelle. The grease collector includes a channel with a flexible side portion for providing a sealing between the nacelle and a wind turbine tower. Moreover, a wind turbine nacelle and a wind turbine with a grease collector and a method for collecting excess grease which is emitted from a yaw system of a wind turbine are provided. | 09-06-2012 |
20120243990 | Vertical axis wind turbine - A vertical axis wind turbine is disclosed which includes an upstanding tower. A plurality of radially spaced-apart airfoil supports are rotatably mounted on the tower which extend outwardly therefrom. A generally vertically disposed airfoil blade is pivotally secured, about a vertical axis, to the outer end of each of the airfoil supports. A wind vane is secured to each of the airfoil blades which causes pivotal movement of the associated airfoil blade relative to the associated airfoil support in response to wind direction. A mechanism interconnects each of the airfoil blades to the associated wind vane which causes pivotal displacement of the airfoil blade with respect to the associated wind vane and wind flow with the pivotal displacement being of a magnitude and direction to cause a forward thrust to the airfoil blade from wind acting on the airfoil blade. | 09-27-2012 |
20120243991 | INFINITELY VARIABLE MOTION CONTROL (IVMC) FOR GENERATORS, TRANSMISSIONS AND PUMPS/COMPRESSORS - Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly, a driver and a one-way clutch or ratchet bearing assembly may be used to form a cam controlled speed converter converting a given input to a variable or constant output speeds and further having direction control. All IVMC's, cam controlled IVMC, input compensated IVMC and pitch controlled IVMC may be utilized to form various embodiments of infinitely variable generators, transmissions and compressors/pumps. | 09-27-2012 |
20120257969 | WIND POWER GENERATING SYSTEM USING TURBINE BLADES RADIALLY ARRANGED ALONG A CIRCULAR STRUCTURE - The present invention relates to a wind power generating system using turbine blades radially arranged along a ring structure. The technical features of the present invention are for a wind power generating system in which a plurality of blades for wind power generation are radially arranged on the interior and exterior of a circular or ring structure, thereby generating wind power in an effective manner even from a weak wind, without being restricted by the area, space or the like in which the wind power generating system is installed. | 10-11-2012 |
20120263591 | SYSTEMS AND METHODS FOR ENHANCING PERFORMANCE OF WINDMILLS - Systems and methods for enhancing performance of windmills. In one embodiment, a wind turbine system for enhancing performance of windmills is provided. The system includes a wind turbine assembly, which further includes a wind turbine attached to an upper end of a tower of the assembly. Further, a frame is attached to the upper end of the tower, which includes a plurality of mini windmills for purposes of wind detection. The mini windmills are oriented to detect the angular velocities of wind of which the windmills are facing into. | 10-18-2012 |
20120328434 | INTEGRATED WIND TURBINE - An integrated wind turbine. Each turbine blade has a flexible skin. Openings in the leading edge lead to one or more inflation chambers for ram air inflation during operation. A pivotal connection with the support post allows the plurality of turbine blades to yaw such that the rotor plane remains substantially perpendicular to the wind direction. The wind turbine may also include self-deploying drag vanes that extend away from the flexible skin when the wind speed is greater than the speed of the airfoil. | 12-27-2012 |
20130017085 | WIND TURBINE WITH ANTI-ROTATIONAL LOCKING MECHANISM, THRUST CHANNELS, AND BLADE TIP WINGLETSAANM Belden; Ralph A.AACI MindenAAST NVAACO USAAGP Belden; Ralph A. Minden NV US - A wind turbine includes a base, a support member rotatably mounted to the base, an elongate body having a first end and a second end, the body pivotally mounted to a distal end of the support member at a pivot point that is offset from the axis of the base. A rotor blade assembly is coupled to a rotor shaft rotatably mounted to the top of the body and includes a plurality of rotor blades. A tail assembly is mounted to the second end of the elongate body and includes an airfoil section and at least one upright vane having a rudder with an angular offset. An alternator is coupled to the rotor shaft. An annular ratchet is disposed on the base. A flag and pawl assembly is pivotally coupled to a proximal end of the support member. | 01-17-2013 |
20130039762 | ADJUSTMENT SYSTEM FOR THE PITCH ANGLE OF A WIND TURBINE - Adjustment system for the pitch angle of a wind turbine, which wind turbine includes an axis of rotation that is horizontal or at a small angle with respect to the horizontal plane, and a rotating hub to which the blades are connected in a manner allowing their slewing, in which system an adjustment arrangement is arranged inside the hub and/or shaft. The arrangement includes a drive device moving in the direction of the axis of rotation as well as an adjustment cylinder apparatus or corresponding for moving it. Rod-shaped control parts for each blade are connected in a hinged manner to the drive device. The control parts are connected to the butt part of each blade such that the pitch angle can be adjusted by shifting the drive device. | 02-14-2013 |
20130039763 | WIND POWER GENERATOR - A wind power generator having a nacelle, which is mounted to an upper end of a support tower, supports in rotary manner a rotor, and is oriented around a rotation axis by an orienting device provided with at least one gearmotor. The gearmotor presents an output gear coupled with a crown gear fixed to the support tower and is hinged to the nacelle so as to rotate around a fulcrum axis, which is substantially parallel to the rotation axis under the thrust of an actuation device. | 02-14-2013 |
20130052013 | Wide Blade Multiple Generator Wind Turbine - The present invention is a wide blade multiple generator wind turbine, which produces electrical energy by harnessing the kinetic energy of the wind to rotate multiple generators. Unlike traditional wind turbines, the present invention uses wide blades to focus on producing more torque rather than rotational speed. The wide blades are concentrically attached to a large drive wheel. The drive wheel is engaged to each of the generators and must be large enough to properly transfer the torque produced by the wide blades to the generators. The present invention could either position the generators concentrically around the drive wheel, which would directly engage the drive wheel to the generators, or position the generators laterally along the base structure, which would engage the drive wheel to the generators through a belt-and-pulley system or a chain-and-gear system. In addition to harnessing wind power, the present invention is design to absorb solar energy through the surface of the wide blades. | 02-28-2013 |
20130115084 | Turbine - The turbine (T) of the invention comprises at least one rotor ( | 05-09-2013 |
20130149148 | CABLE TENSION BRAKE SYSTEM - A wind turbine and braking system. A wind turbine may include a tower and a nacelle coupled to the tower, the nacelle rotatable with respect to the tower about a rotation axis. A collar may be centered on the rotation axis and rigidly connected to one of the nacelle and the tower. A first cable may be wrapped about the collar in a first direction. A first tensioning device may be anchored to a structure of the other of the nacelle and the tower, the first tensioning device configured to selectively apply tension to a first end of the first cable to apply a braking torque to the collar. | 06-13-2013 |
20130170987 | Wind Turbine Tower with Yaw Bearing System - A wind turbine includes a vertically standing non-uniform tower adapted to support a horizontally oriented rotor. A fixed base portion of the turbine is adapted to support a separate rotatable tower having an upper rotor swept portion along the main body of the tower. The tower is adapted to be secured to the base for being rotatably yawed into the wind. A bearing system is housed between the base and lower tower extremity includes a pair of vertically spaced tracks situated on an annular support rail adapted to be fixed to a ground structure, for example a reinforced concrete foundation. The bearing system is further defined by pluralities of yaw bearing cartridge assemblies adapted to extend through flanged apertures of a skirt portion in the lower extremity of the tower. | 07-04-2013 |
20130170988 | WIND TURBINE SYSTEM - A wind turbine system includes a nacelle, a generator, a central control module, an impeller, a transmission module, a speed sensor module, a pitch angle driving module, a hub controller and a slip-ring apparatus. The hub controller receives a first pitch command from the central control module or generates a second pitch command according to a rotation speed of a hub sensed by the speed sensor module. If the first pitch command is correct, the hub controller transmits the first pitch command to the pitch angle driving module. If not, the hub controller transmits the second pitch command to the pitch angle driving module. The pitch angle driving module controls a pitch angle of at least one blade after receiving the pitch command, so that the wind turbine system works. Therefore, the wind turbine system has a distributed control function and a redundancy capability. | 07-04-2013 |
20130170989 | APPARATUS FOR ROTATING THE NACELLE OF A WIND TURBINE - The present invention provides an apparatus for the controlled rotation of a nacelle of a wind turbine, which includes a control device and n of yaw brakes. In standstill operation, the n yaw brakes are actuated to impart a standstill holding moment M1 for holding the nacelle, and the n yaw brakes impart a substantially equal first holding moment. In tracking operation, the n yaw brakes are actuated to impart a tracking holding moment, M2, which is lower than the standstill holding moment M1 (M1>M2). The control device, in tracking operation, actuates a number m of the n yaw brakes to generate substantially the same constant holding moment M3, where M1/n>M3>M2/n, and where the other (n−m) yaw brakes are actuated to generate substantially the same constant holding moment M4, where m*M3+(n−m)*M4˜=M2, and M1/n>M2/n>M4. | 07-04-2013 |
20130183152 | FIN ASSEMBLY - A fin assembly for controlling movement of a buoyant body, including: a base for attaching the assembly to the body; and a fin attached to the base by a hinge, wherein when the assembly is attached to the body, the fin can pivot at the hinge from a first condition to a second condition to allow substantially free rotation of the body in a first rotational direction. | 07-18-2013 |
20130189101 | Drive Apparatus for Electricity Generating Apparatus - A drive apparatus for an electrical generator ( | 07-25-2013 |
20130202436 | FEATHERING PROPELLER WITH BLADE DAMPENING AT FORWARD AND BACKWARD MOTION AND BLADES PITCH CONTROL DURING BACKWARD MOTION - Disclosed is a variable pitch propeller having a blade pivoted rotatably to a cylindrical propeller casing, a drive shaft, coupled to a propulsor and positioned coaxially inside the propeller casing, a kinematic mechanism coupled to the drive shaft, or to the propeller casing, and to the blade, for adjusting the rotary motion of the blade about its axis of pivoting to the propeller casing, and means for coupling in rotation the drive shaft to the propeller casing. The propeller provides a non-null angular range of relative rotation of the blade about its axis of pivoting, with respect to the propeller casing, or vice versa. The means for coupling in rotation the drive shaft to the cylindrical propeller casing include an elastic element interposed between the drive shaft and the cylindrical casing. | 08-08-2013 |
20130209255 | ROTOR BLADE ASSEMBLY FOR WIND TURBINE - A rotor blade assembly is disclosed. The rotor blade assembly includes a rotor blade having exterior surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The rotor blade further defines a span and a chord. The rotor blade includes a skin layer that includes the exterior surfaces. The rotor blade assembly further includes a passive spoiler assembly operable to alter a flow past an exterior surface of the rotor blade. The spoiler assembly includes a spoiler feature movable between a non-deployed position and a deployed position. Movement of the spoiler feature from the non-deployed position to the deployed position is caused by a change in an applied force to the spoiler feature by the skin layer. | 08-15-2013 |
20130251524 | Wind Turbine Generator - A wind turbine includes a plurality of pivot shafts that are in paired parallel relationship and engaged to a central drive shaft, each pivot shaft supports a wing. Each pivot shaft rotates cyclically through 90° to move each wing from a wind-engaging orientation (drive position) in which the wing presents a flat surface approximately transverse to the incident wind, to a minimum dragposition (glide position). A gear transmission links the pivot shafts for sequential rotation in concert between the drive and glide positions. | 09-26-2013 |
20130280069 | VENTILATION DEVICE FOR GENERATING UNIFORM FLUID FLOWS, AND A DRIVE UNIT FOR A DEVICE OF SAID TYPE - A device according to the present disclosure ( | 10-24-2013 |
20130315732 | HORIZONTAL AXIS WIND MACHINE WITH MULTIPLE ROTORS - A horizontal-shaft wind machine having improved low wind speed performance and greater overall efficiency consists of multiple rotors, wherein each successive rotor is larger in diameter than the previous rotor moving from the most windward rotor to the most leeward rotor. Each rotor may be coupled to a separate concentric shaft, and all rotors may rotate in the same direction with the output shafts of each rotor coupled via an overrunning clutch to a single shaft, the output of which is used to drive the load. Winglets attached to the leading edge and tip of the rotor sails improve low wind startup torque. | 11-28-2013 |
20130323056 | VERTICAL AXIS WIND TURBINE BLADE - A vertical axis wind turbine blade is revealed. The vertical axis wind turbine blade includes a blade frame formed by assembly plates disposed at regular intervals and blade bodies each of which pivoted between two adjacent assembly plates. Stoppers are disposed between the assembly plates and the blade bodies. The stopper is used to stop on one side of the blade body corresponding to a downwind surface of the assembly plate. The blade bodies pivotally connected to the blade frame move along with the blade frame to be in an open or a closed position. When the wind blows the upwind surface, the blade body is stopped by the stopper and in the closed position so as to receive the wind power. While the wind blowing the downwind surface, the blade body is in the open position to reduce the wind resistance. Thus the wind turbine efficiency is dramatically improved. | 12-05-2013 |
20140056707 | CONVEYANCE DEVICE FOR AN ENERGY COLLECTOR - The present invention provides a conveyance device for an energy collector such as a wind turbine, solar collector, or a combination thereof. The conveyance device is configured to orient the energy collector by moving the device to compensate for a change in the source of energy such as a change in power, direction, speed, location and a combination thereof. The conveyance device includes a track configured to be positioned near a support structure such as a telecommunications tower and first and second electrical contacts configured to electrically connect the energy collector to an electrical load. The conveyance device is also configured to receive an energy collector configured to be attached to the track such that the energy collector is movable relative to the track. In this manner, there is provided a device for adjusting the orientation of the wind turbine or solar collector such that it collects energy efficiently. | 02-27-2014 |
20140086744 | TORQUE LIMITER, WIND TURBINE AND WIND TURBINE GENERATOR - In a torque limiter, wedge-shaped spaces are formed between inner and outer rings so as to be arranged in the circumferential direction. In each wedge-shaped space, there are arranged a first roller and a second roller that transmit torque between the inner and outer rings by being brought into wedge-engagement when the inner and outer rings rotate relative to each other in one direction and in the other direction, respectively. Between the first and second rollers, there is arranged an urging device that urges the first and second rollers in such directions that the first and second rollers are brought into wedge-engagement. Each wedge-shaped space is formed such that when the torque becomes equal to or higher than a predetermined value, a first wedge angle of the first roller or a second wedge angle of the second roller becomes such an angle that wedge-engagement of the roller is cancelled. | 03-27-2014 |
20140086745 | Vertical Axis Wind Turbine - A vertical axis wind turbine having a plurality of upright airfoils pivotally engaged. A continuous adjustment of the angle of attack of the airfoils to oncoming wind is provided by rotation of a control plate connected to the vanes which are mounted upon a rotating drive plate. A vane can be employed to rotate the control plate to affect the continuous adjustment of the airfoils. | 03-27-2014 |
20140105740 | TRILLIUM WIND TURBINE - A trillium wind turbine has an electricity-generating nacelle and swept-back, complexly-curved blades. Each blade has a main blade, a trailing edge blade, and a diversion blade. Wind is directed down the length of the blade and exits the tip. The main blade resembles a portion of a cylinder in form, the cylinder being twisted to change the angle of attack, thereby adding more lift throughout the length of the blade. The trailing edge and diversion blades are pitched relative to the wind and produce lift. Additionally, wind hitting the diversion blade is diverted behind the blade. Because the surface area and volume of the blade are larger near the nacelle and smaller at the tip, the air that travels along the blade increases in velocity as it travels producing more thrust/lift. The turbine also automatically faces into the wind without the need for sensors or positioning motors. | 04-17-2014 |
20140112782 | PROPELLER WINDMILL FOR SMALL-SIZED POWER GENERATOR - Provided is a small-sized propeller windmill which can efficiently generate power even when a wing speed is low, has no possibility that the windmill is broken even when a strong wind blows, can stably ensure a weathercock direction of a base blade, and can suppress an environmental burden. In such a propeller windmill, the blade having a corrugated wing shape is supported in a cantilever manner by way of an elastic body, and the blade and the elastic body are made of paper or plastic. Further, to stably ensure the weathercock direction of the base blade, a weathercock stabilizing mechanism is arranged behind the base blade. | 04-24-2014 |
20140127015 | AUTOMATIC ADJUSTMENT DEVICE FOR ADJUSTING INCLINATION OF BLADES OF WIND TURBINES - An automatic adjustment device for adjusting inclination of blades of wind turbines includes a first housing having multiple blades connected thereto and each blade has a first connection portion which is inserted into the firs housing. A transmission unit is connected to the first housing. A pump unit and a speed-changing member are mechanically connected to the transmission unit. The pump unit is mechanically connected to the speed-changing member. The pump unit has a driving unit which is connected with a transmission disk which is connected to the connection portions of the blades. The pump unit is activated by speed difference between the speed-changing member and the transmission unit so as to rotate the transmission disk via the driving unit, and adjust the inclination angle of the blades to protect the blades and increase the efficiency of the wind turbine. | 05-08-2014 |
20140133983 | YAW BRAKES FOR WIND TURBINES - Yaw brakes for wind turbines are proposed, the wind turbines having a tower, a nacelle and a yaw system for rotating the nacelle with respect to the tower. The yaw brakes comprise a locking part, having a toothed profile at a side facing a toothed profile of an annular gear of the yaw system. The locking part of the yaw brakes is movable in a radial direction relative to the annular gear, between a brake position and a non-brake position. Brake discs and callipers may be eliminated. | 05-15-2014 |
20140186179 | SELF-POSITIONING DEVICE FOR WATER TURBINE - A water generator assembly includes a water generator having two forwarding wings on the front end thereof and the forwarding wings are applied by current and generate a resistance force and a lifting force. The resistance force and the lifting force are combined as a composition force which has a forwarding component force in the X-axis to offset the drag force cause by the current applying to the water generator. A component force in Y-axis is offset by the forwarding wings. A balance wing is connected to the water generator to prevent the water generator from spinning about the X-axis. The water generator has a lifting wing to generate a lifting force to lift the water generator. A buoyant floats and indexes the water generator. A tail wing and two side wings keep the water generator facing the current and prevent the water generator from spinning about the Y-axis. | 07-03-2014 |
20140199169 | Method and apparatus for controlling an operational parameter of a wind turbine - A method for operating a wind turbine is described. The wind turbine includes a tower having a tower axis, and a nacelle being rotatable about the tower axis. The method includes providing a data set of one or more operational parameters of the wind turbine. The one or more operational parameters depend on the angular position of the nacelle with respect to the tower axis. The method further includes determining an angular position of the nacelle with respect to the tower axis; selecting one or more operational parameters from the data set of one or more operational parameters of the wind turbine depending on the determined angular position of the nacelle; and applying the one or more selected operational parameters to the wind turbine. Further, another method of operating a wind turbine and a wind turbine are described. | 07-17-2014 |
20140205453 | AQUATIC PROPULSION BY MEANS OF OSCILLATING FINS - The aquatic propulsion proposed uses oscillating blades provided with independent, mutually parallel vertical shafts affixed, at the upper end thereof, to a single horizontal oar of planar profile. The blades or fins being of different length on the basis of the distance between the fastening point of the actual oscillation shaft thereof and the shaft on which the oar rocks. Propulsion is achieved when the user applies a force in traction or thrust on any of the two grips provided at either end of the handlebars, or in opposite directions on both at one and the same time. The movement is transmitted to the rotary shaft and then to the profile section on which the fins are arranged, which causes the fins to move transversely and alternately in both directions, causing displacement of the water and the propulsion of the swimmer or floating object or vehicle, in the intended direction. | 07-24-2014 |
20140234103 | METHOD AND SYSTEM FOR IMPROVING WIND FARM POWER PRODUCTION EFFICIENCY - A method and system for improving power production efficiency on a wind farm having of a plurality of spatially distributed wind turbines is provided. The method includes receiving a wind measurement that includes a wind direction impinging on a turbine ( | 08-21-2014 |
20140255190 | Wind Turbine System Constructive Arrangement - This patent refers to a system constructed by the wind turbine ( | 09-11-2014 |
20150292488 | WIND TURBINE INSTALLATION HAVING A TOWER CONSOLE - The present invention relates to wind turbine installations for power generation. The wind turbine installations comprise a turbine support with at least two wind turbines. Furthermore, a wind turbine installation according to the invention comprises a tower console with at least one bearing point. Said bearing point permits a rotational movement of the turbine support about the vertical axis of the turbine support and relative to a foundation. The turbine support is connected to the tower console by means of tower pillars. The installation furthermore comprises electronics which comprise an electronic controller. The electronics are furthermore designed so as to be rotatable about the vertical axis of the turbine support relative to the foundation and relative to a power transmission cable. | 10-15-2015 |
20150322919 | Electricity Generating Wind Turbine - The invention relates to a wind turbine rotor comprising of a central warhead, blades with asymmetrical conical geometry and an external girth. The warhead distributes air from to a central section aerodynamically to the blades, which together account for more area than an area of a circle described by an outer girth or cinch around all said blades, so they produce more torque than conventional turbines. The outer girth eliminates friction between the blades and the wind and also stiffens the whole rotor. There is also a stiffening polygon between the blades. Being a multi-blade turbine together with the geometrical form of the blades makes the turbine starts generating at 3 to 4 m/s wind speed. The present invention is good looking and silent. | 11-12-2015 |
20150354532 | CONTROLLING MOTIONS OF FLOATING WIND TURBINES - A motion controller for a floating wind turbine with a plurality of rotor blades, is arranged to control a motion of the floating wind turbine in a yaw direction. The controller adjusts the blade pitch of each rotor blade so as to create a net force to control the motions. The controller includes a control action which is proportional to a yaw offset angle and/or a control action which is proportional to an integral of the yaw offset angle. | 12-10-2015 |
20150377212 | ROTATION DRIVING MECHANISM FOR WINDMILL - A rotation driving mechanism for windmill ( | 12-31-2015 |
20160076522 | WIND TURBINE ARCHITECTURE - A wind turbine arrangement is disclosed which comprises a rotor hub ( | 03-17-2016 |
20160186723 | Revolving overhead windmill - The invention provides a revolving overhead windmill which includes airfoil means for interfacing with a fluid current comprising an air current or wind, and which includes energy harvesting means utilizing fluid current driven periodic motion of the fluid-foil means for capturing fluid-dynamic renewable energy and converting it into usable energy in a desired form such as electricity. The invention provides devices, methods and systems for harvesting renewable energy for medium-scale, large-scale and ultra-large-scale applications, to provide real and substantial benefits towards efficiently fulfilling energy needs while also more broadly serving humanity and our global environment. The various embodiments of the invention provide energy with zero consumption of fossil fuels and zero emissions of greenhouse gases. | 06-30-2016 |
20180023543 | A WIND TURBINE COMPRISING TWO OR MORE ROTORS | 01-25-2018 |
20180023544 | A WIND TURBINE WITH A ROTOR COMPRISING A HOLLOW KING PIN | 01-25-2018 |