3251 results about "Wind driven" patented technology

The invention relates to a wind-driven power-plant comprising a rotor (100) which is fitted with at least one rotor blade and which is connected directly or indirectly to a generator for power generation, further including an electrical assembly made up of different electrical sub-assemblies including electronic, electrical and/or electromechanical and/or sensor elements and/or electrotechnical safety elements, where, depending on their purposes, all elements/components of one or more electrical sub-assemblies or specific elements of the electrical sub-assembly are combined into one or more function modules that implement at least one function in relation to the generation of electric power, where a parallel module is associated with at least one function module, and the parallel module is able to implement the same or nearly the same function as the function module in normal operation.

The present invention relates to a several wind mills parallelly-connected type wind energy and optical energy complementary water elevation system. Said system includes the following several portions: wind-driven power generator unit, solar cell component, intelligent controller and submersible pump. The described intelligent controller can be used for controlling, managing and tracking said system.

A shrouded enclosure is mounted to a vehicle roof, the shrouded enclosure comprising an air intake formed by controllable shrouds, a turbine, an electricity generating device, and a discharge outlet. The turbine is interposed between the air intake and the discharge outlet, operatively connected to the electricity generating device and adapted to operate by the air passing through the shrouded enclosure when the vehicle is in motion. The turbine rotates about a turbine shaft mounted on a pair of bearing towers. The rotational energy of the turbine shaft is transferred to the electricity generating device. A base plate is interposed between the shrouded enclosure and the mounting surface of the vehicle. An electrical circuit provides electrical continuity between the electricity generating device and the battery during predetermined periods thereby generating electrical energy to charge the battery with the generated electrical energy. The controllable shrouds are opened to a predetermined position during the predetermined periods of electrical continuity and are otherwise closed to form a predetermined aerodynamic shape to reduce drag during vehicle movement.

The invention discloses an epoxy resin adhesive for manufacturing blades of a wind driven generator and a preparation method thereof. The epoxy resin adhesive is prepared by combining a resin part and a curing agent part, wherein the resin part comprises epoxy resin, a dilutent, filler, a thixotropic agent and an auxiliary agent; the curing agent part comprises an amine curing agent, filler and athixotropic agent; and the filler comprises a powdery filler part and a fibrous filler part. The epoxy resin adhesive prepared by using the general epoxy resin has high strength, particularly furtherimproves the strength of materials by adding the fibrous filler, improves the anti-cracking performance of the materials, meets the special requirements of the blades of wind driven generators with megawatt or more on the materials and has low material cost and high economy.

The present invention relates to an imitation candle, comprising a housing, an imitation flame body provided at a top of the housing, a light source adapted to emit light onto the imitation flame body, a swing motion device, and an air blowing device. A lower portion of the imitation flame body is connected with the swing motion device that is configured to allow the imitation flame body to pivot horizontally about at least one of a X axis and a Y axis, and comprises a wind driven pendulum member. The air blowing device is adapted to blow air toward the wind driven pendulum member causing the wind driven pendulum member to swing as well as the imitation flame body to pivot. The wind driven pendulum member is a wind driven bowl adapted to receive blowing air and having an air discharge hole.

A tethered airborne wind-driven power generation device providing, in various embodiments, a main tether and plurality of auxiliary tethers, feedback controls for continuously adjusting pitch, roll and yaw, and a Vee-shaped configuration for disposing rotors along the frame of the device. The auxiliary tethers avoid slack and resultant transient instability, and the Vee-shaped rotor disposition takes advantage of upwash or any other aerodynamic benefit from the rotors adjacent to it, to improve efficiency.

The invention proposes a system simulation method for connecting large-scale wind power into a power grid in a centralization way and an effective equivalent mode of a high-capacity wind power station. Based on the synchronization operating characteristics of the large-scale wind power, the invention makes the large-scale wind power synchronization simulation analysis principle under the comprehensive consideration of the influences of the wind resource characteristics of wind power generation, the dynamic response characteristics of a wind driven generator and the differentiation characteristics of different types and different control modes of various wind driven generators and the like; therefore, the invention constructs the complete analytical framework and flows of the system simulation assessment with the large-scale wind power being connected into the power grid. The simulation analysis result shows that the system simulation method can comprehensively, objectively and accurately assess the impact and the safety bottleneck to the stable running of a power system caused by wind power synchronization after the base synchronization of the large-scale wind power due to the affection to the dynamic response characteristics of the power system by the differentiation of the types and the response characteristics of various wind driven generators and the wind resource characteristics. Therefore, the method is beneficial for the scheduling and operating staff to accurately grasp the affection to the system characteristics by the connection of the large-scale wind power and the law of the connection of the large-scale wind power, and has significant meaning for instructing and making the corresponding precautionary and improved measure and ensuring the normal running of the system after the connection of wind power.

A roofing shingle for enhanced wind/rain durability embodies two transverse lines of adhesion. A first discontinuous line of adhesive joins the butt edge of an overlying shingle to the underlying shingle. Secondly, a band of sealant adjacent the top edge of an underlying shingle seals against an overlying shingle to prevent penetration by wind driven rain to the roof deck. A reduced headlap is thereby permitted, thereby either reducing shingle size or extending shingle coverage. Exposed portions of the sealant band improve the erosion resistance of underlying shingles.

A backup DC vent system for an equipment enclosure is disclosed. The system includes an air intake system which allows air to pass from the ambient environment through a battery compartment of the enclosure, through the floor and into the interior of the enclosure where components to be cooled are mounted. Internal air distribution is accomplished by an air distribution duct system. An air exhaust system is attached to a side of the enclosure and includes a door panel to selectively allow heated air flow from the enclosure interior, a fan mounted to a fan box which is mounted to the enclosure for sucking the air through the enclosure, and a cover to prevent wind driven rain water from impinging upon the fan or the interior of the enclosure.

Disclosed is a comprehensive coordination control method of a wind-solar direct current micro-grid. The wind-solar direct current micro-grid comprises wind driven generator and alternating current (AC)/direct current (DC)/DC converters, photovoltaic array and DC/DC converters, a circuit interrupter, AC/DC load and DC/AC and DC/DC converters, a DC bus, a supercapacitor energy storage system and bi-directional DC/DC module, a storage battery energy storage system and bi-directional DC/DC module, a bi-directional AC/DC converter, a coordination controller, a control network for connecting the coordination controller and the converters and a communication network for connecting the coordination controller and a large power grid power scheduling center, and an operational mode of the wind-solar direct current micro-grid is divided into two categories of a grid-connected mode and an island mode. Stable operation of the wind-solar direct current micro-grid under the grid-connected mode and the island mode is achieved by comprehensively using power scheduling, load scheduling and energy storage device scheduling.

The pod of wind-powered generator is constituted by a rigid fairing in which at least one electricity generator for coupling to at least one wind-driven propeller is disposed. The rigid fairing of the pod is formed by the body of the generator in which there are mounted a stator and a rotor, thereby simplifying the structure of the pod.

A vertical wind-driven electricity generation device is described, which utilizes a unique segmented Savonius rotor and which is easily handled, transported, assembled and maintained, even by a single person. The blades of the rotor are segmented into a plurality of modest size blade pair segments, each of which comprises two (or optionally, three or four) low height, helically curved blade portions. The blade pair segments are preferably of the same height and diameter. The rotor is mounted on a central vertical shaft connected to a generator. When the plurality of blade portions are installed on the device's central shaft, the overall blade configuration functions as an unitary Savonius rotor. Flow of gas (normally air in the form of wind) causes the segmented Savonius rotor to move, turning the shaft and rotating member of the generator to rotate, causing the generator to generate electricity.

Provided herein are polyamine precursors useful in the manufacture of epoxy resins. Use of a polyamine precursor according to the invention provides an epoxy resin formulation having an increased working time over prior art amines used for curing epoxies. Increased working times translate to the ability to manufacture composites which could not be made using conventional epoxy curing agents, such as composite blades for wind-driven turbines. Such polyamines are also useful in polyurea formulations for lengthening reaction time, thus allowing more flow of applied polyurea coatings prior to gellation.

The invention discloses a distributed power source contained power system multi-target reactive-power optimization method in the field of power system reactive-power optimization. The technical scheme includes: 1, deducing a model of a wind-driven generator in power flow calculation; 2, initializing power grid parameters and grid-connected parameters of a distributed power source; 3, constructing an individual vector formed by system reactive-power optimization control variables, and initializing species; 4, performing the power flow calculation according to the initialized species and grid parameters after grid-connection of the distributed power source, and calculating objective function values; 5, performing multi-target optimization by utilizing the harmony search hybrid algorithm based on artificial bee colony; and 6, finishing the optimization process and outputting optimized results. The distributed power source contained power system multi-target reactive-power optimization method is a hybrid optimization algorithm ABS-HS which integrates the advantages of global search of the artificial bee colony (ABC) algorithm with local search of the existing harmony search (HS) algorithm, so that efficiency and robustness of the algorithm are improved.

The invention discloses an optimizing method of an independent microgrid system which comprises diesel generators, a wind driven generator, a photovoltaic array and an energy storage battery. The optimizing method specifically comprises the steps of: considering a coordination control strategy among a combined starting mode of multiple diesel generators, the energy storage battery and the diesel generators on an optimizing plan designing model by an independent microgrid system-based multi-target optimizing design model to ensure that the utilization rate of renewable energy resources in the independent microgrid system is higher and the independent microgrid system is more economic and more environment-friendly in operation; aiming at the stability of the optimizing plant designing model of the system, considering the standby capacity of the stability demand of the independent microgrid system; and carrying out multi-target problem solving by adopting an NSGA-II (Nondominated Sorting Genetic Algorithm II)-based multi-target genetic algorithm on the basis of a solving algorithm of the optimizing plant design model so as to realize multi-target optimization of economy, reliability and environment friendliness of the independent microgrid system.

The invention discloses an anti-icing and abrasion-resistant coating for blades of a wind driven generator. The coating at least comprises two following components of: polyurethane resin and a solid additive with the anti-icing property and 3-15% by mass of the polyurethane resin. For the solid additive, the range of dielectric constant is 1 to 4, the range particle diameter is 0.5 micron to 200 microns, and the range of density is 0.8g/cm<3> to 4g/m<3>. The polyurethane resin consists of an A component and a B component by the reaction, wherein the A component at least comprises aliphatic isocyanate or aliphatic isocyanate derivates or aliphatic isocyanate polymer, and the B component at least comprises hydroxylated acrylic resin or polyester polyol or polyether polyol or polyaspartic ester or micro-molecule polyol chain extender. The invention has the anti-icing property and abrasion resistance at the same time, the adhesion force of the coating and the ice is smaller than 300N, and the abrasion is lower than 50mg; therefore, the invention is suitable for the protective coating materials of the blades of the wind driven generator.

A downstream wind turbine for converting wind energy into electrical energy. In a preferred embodiment the downstream wind turbine adapted to respond to high winds and gyroscopic precession. The downstream wind turbine comprises a support tower; a yaw bearing attached to the support tower; a support frame operably linked to the bearing; at least one swing arm with one end pivotally attached to the support frame; an elongated carry member pivotally attached to the other end of the swing arm; a wind driven energy conversion system balanced on and attached to the carry member so that the carry member is biased to maintain an approximately horizontal orientation with respect to the support frame and in response to wind proportionally swings downstream, and which responds to gyroscopic precession forces by tilting up or down; and a governor device for modifying at least one dynamic characteristic of the turbine.

Various power transmission and generation systems and assemblies are provided for a wind turbine. In one embodiment, a power generation system is provided including a transmission having an input axially aligned with an output, the input configured to receive rotary motion generated by a wind driven rotor head, the input located downwind of the output, an electromagnetic apparatus having an input configured to be coupled to the transmission output, and a bearing configured to radially support both the transmission output and the electromagnetic apparatus input. In this way, a common bearing may support both the transmission and electromagnetic apparatus, allowing for a more compact and efficient design while retaining service and repair capabilities.

The invention relates to an independent feathering control system and a control method for a wind driven generating set, wherein the control system comprises a sampling module, a control module and a driving module. A feathering motor in the driving module is connected with the blades of the wind driven generating set through a speed reducer. The sampling module is used to acquire the signals such as the wind driven generating set power, the boss rotating speed, the impeller position, the feathering angle, the paddle vibration, and the like, and to respectively send the acquired signals to the control module. The control module comprises a wind machine power controller for processing the wind driven generating set power signal and the boss rotating speed signal, a periodic unbalanced load compensation controller for processing the impeller position signal, the wind machine power signal and the boss rotating speed signal, a transient state impact load compensation controller for processing the feathering angle signal, the paddle vibration signal, the impeller position signal, the wind machine power signal and the boss rotating speed signal, and an output coupler for processing the signals outputted from the three controllers and comprehensively outputting the signals to the driving module.

The invention relates to a wind power generator group gear box oscillation damping support method and an oscillation damping support device thereof. A floating support manner is used for putting the stretching arm of the wind power generator group gear box into a square hole-shaped frame typed oscillation damping support base, and the stretching arm is fixed between an upper elastic body and a lower elastic body of the frame typed oscillation damping support base, thus leading the stretching arm to be in floating and elastic support state between the two elastic bodies. And the oscillation damping support device comprises the oscillation damping support base and oscillation damping elastic bodies installed in the oscillation damping support base; the oscillation damping support base has the fame typed structure; the square hole-shaped frame is composed of a U-shaped frame and a beam; an upper oscillation damping elastic body and a lower oscillation damping elastic body are respectively arranged at the upper and the lower part inside the square hole-shaped frame. The stretching arm of the wind power generator group gear box is arranged between the upper oscillation damping elastic body and the lower oscillation damping elastic body, thus forming elastic floating support.

A building panel subject to interior condensation of moisture and exterior wind-driven moisture includes a sheet having an inner surface onto which condensed moisture forms. An open upper reservoir is positioned proximate a bottom portion of the inner surface of the sheet to receive the condensed moisture. A lower chamber having at least one drain port is positioned below the upper reservoir. A wicking port connects the upper reservoir to the lower chamber. The wicking port weeps the condensed moisture from the upper reservoir to the lower chamber to drain the upper reservoir. The condensed moisture drains from the lower chamber via the drain port. The wicking port blocks the upward flow of wind-driven moisture that enters the lower chamber via the drain port.

The windmill assembly is a low drag, streamlined body of revolution that captures the kinetic energy content of the accelerated laminar air surrounding the body. The assembly includes a power-generating, wind-driven turbine that is compact, lightweight and capable of producing a substantially greater output than a conventional windmill with a comparable size rotor. The turbine includes a protruding aerodynamic nose and outer cowling that provide a streamlined, wind-collecting inlet section that constricts the incoming air stream and increases its velocity through the turbine blades. The turbine further includes an exit section designed to exhaust the air stream with a minimum of turbulence. One or more generators are coupled to a turbine wheel, and are electrically switched on and off to maximize the energy capture over the full range of ambient winds. The wind turbine assembly may be configured around a blimp-type body having counter-rotating turbine assemblies.

The hurricane prevention system and method for use in ocean water is provided including a buoyant platform on which is disposed a wind-driven power source, a water-moving system, and a water-dispersing system. The wind-driven power source is configured to use wind energy to power the water-moving system, which is configured to transport water from somewhat deeper ocean water levels to, or near, the level of the ocean. The water-dispersing system is preferably configured to disperse the water from the water-moving system to an area at or near the sea surface. The buoyant platform preferably is anchored by a mooring system. The hurricane prevention system and method is designed to bring cooler water from deeper in the ocean to or near the ocean surface and to disperse that cooler water in that area to reduce the sea surface temperature, thereby preventing or inhibiting the formation of hurricanes.

The invention provides a novel floating type multi-floater wind-wave energy hybrid power generation device which comprises a wind driven generator, a floating foundation platform, a wave energy capture device and connecting structures between floating bodies, wherein the wind driven generator comprises blades, a hub, a cabin and a tower; the floating type foundation platform is a semi-submersible type and is located on the sea surface by an overhung anchor chain line; the wave energy capture device comprises floaters and an energy capture (PTO) system, and the axial relative movement between the wave energy floaters and stand columns of the foundation platform under the action of wave energy is utilized to drive the PTO system to generate electric energy; and each connecting mechanism comprises a guide rail and a U-shaped wheel, and can enable the platform and the wave energy floaters to produce axial relative movement only. The novel floating type multi-floater wind-wave energy hybrid power generation device can realize the purpose of joint power generation of offshore wind energy and wave energy by utilizing mechanical energy possessed by offshore air and wave, and is good in stability, wide in applicable water depth scope, high in power generation efficiency, simple in structure form and reliable in power generation mode.

The present invention provides a wind power generation device capable of reducing collision of a flying object against a blade or bird strike. The wind power generation device includes a tower set up on the ground, a nacelle fixed to the tower, a plurality of blades rotatably fixed to the nacelle via a hub, an obstacle search device capable of detecting a flying object existing in front, on the windward side, and a blade angle controller to control the change in angle of the blade including a rotation stop position. The obstacle search device searches for the flying object continuously, and when the flying object is determined to be approaching based on the continuous searching, the blade angle controller controls to change the blades to the rotation stop position.

The invention discloses a coordination control method for double-fed asynchronous wind driven generator high voltage ride through, on the basis of a mathematical model of a double-fed asynchronous wind driven generator and gird side and rotor side converters of the double-fed asynchronous wind driven generator, allocation principles of active and reactive power of the grid side and rotor side converters of the double-fed wind driven generator are calculated, extremity expressions of active and reactive current are given, and a high voltage ride through implementation scheme capable of effectively providing dynamic reactive support for a power grid and eliminating direct current bus voltage, active power, reactive power and electromagnetic torque ripples is provided. The coordination control method in the invention can overcome defects of weak ride through capability and poor power grid stability of a wind driven generator in the prior art, thereby achieving the goal of optimal control of the generator when the power grid voltage is high; and the method can perfectly be implemented on the basis of original low voltage rid through hardware, thereby realizing joining with an existing low voltage ride through scheme of the unit, and forming a generalized voltage fault ride through control strategy capable of coping with a sudden change of amplitude of network voltage.

The invention discloses a special tri-level full-power converter set for a large power wind-driven generator, which comprises four groups of tri-level rectifiers, and is characterized in that an electric grid-side converter is of two groups of tri-level inverters, the four groups of tri-level rectifiers are respectively connected with four groups of separated three-phase windings of a generator, two groups of tri-level rectifiers which are connected with two groups of three-phase windings with the phase difference of 180 degrees of the generator are connected with each other in parallel, the rectifier groups after being connected with each other in parallel are connected with each other in serial and are connected with two groups of tri-level inverters in parallel connection, and finally the rectifier groups are connected with the electric grid. Four groups of Vienna rectifiers are used for sharing the power, since the Vienna rectifier is of a tri-level converter, the harmonic wave and loss performance thereof are better than that of two-level converter; in addition, each group of Vienna rectifiers only requires three IGBT modules, and the traditional two-level converter requires six IGBT converters, so the reliability of the Vienna rectifier is high. Two groups of tri-level inverters are adopted at the side of the electric grid to be connected with each other in parallel, so the pulse of neutral point potential is neutralized by two groups of converters in parallel connection through the phase reversal design of the transformer.

A blade pitch driving apparatus of a wind-driven generator and a driving method therefor are adapted to receive an external electrical power and impel a blade toward a corresponding pitch angle according to a pitch command. The apparatus includes an UPS, a permanent magnet synchronous motor drive (PMSM drive), an AC pitch motor (ACPM) and a hub controller. The hub controller normally switches the external power to the PMSM drive, receives the pitch command and control the ACPM to impel the blade toward the corresponding pitch angle. When the PMSM drive fails or the external electrical power is interrupted, the hub controller switches the electrical power of the UPS to the ACPM and controls the blade being impelled toward a feathered position.

The invention provides a method for controlling low-voltage ride-through of the grid-connected converter of a wind-driven generating set. On the basis of back-to-back voltage or current-typed grid-connected converter, a motor-side converter detects the middle direct current voltage; a voltage adjuster controls the middle direct current voltage to follow with the middle direct current voltage instruction value; a torque adjuster controls the practical torque to follow with the torque instruction value; an active power adjuster controls the grid-side converter and leads the grid-connected active power to follow with the active power instruction value. The transfer of the dump energy is realized by the coordinated control of the motor-side converter and the grid-side converter, elements such as additional resistance and the like are not required so as to consume the rest energy, thus ensuring that the wind-driven generating set does not run without the grids during the falling period of the network voltage at the access point. The method improves the efficiency of the unit, reduces the energy loss, simplifies the structure of the system, reduces the volume of the device, reinforces the compactness of the structure and reduces the cost of the device.

An elongated roof ridgeline vent is disclosed, comprising an elongated opening in a roof-cover along the ridge and a canopy or cover over the opening. Baffles may be provided between the canopy and the roof-cover to prevent wind-driven rain from entering the opening. Screens or other filtering elements can be provided to prevent the ingress of insects, vermin, and debris through the opening. Also disclosed is a roof employing upper and lower roof-covers spaced apart to form an air insulation layer, with a ridgeline vent in the upper roof-cover. The air layer additionally acts as a ventilation path for air from the attic. Also disclosed are eave vents, undereave vents, and layers for reflecting or absorbing solar radiation. Additionally disclosed are embodiments that employ these ventilation principles in a roof-portion with an upper apex, such as a conical roof.