31results about "Renewable energy generation" patented technology

The guide vane assembly for partially surrounds a vertical axis wind turbine (VAWT), and comprising a front guide and a side guide. The front guide extends ahead of the VAWT and covers a first portion of the VAWT. The front guide has a first inner side and a first outer side meeting at a first leading edge, the first inner side extending from the first leading edge to a first trailing edge and having a shape configured to accelerate incoming air flow from a front of the system into the VAWT. The side guide has a second inner side and a second outer side meeting at a second leading edge located laterally to the uncovered portion of the turbine and aligned with or to the side and behind a frontmost edge of the VAWT. The second inner side extends concavely around the VAWT toward a rear of the VAWT.

A movable wing of a vertical axis wind turbine blade, the movable wing comprising a plate, a reinforcing frame, a hole and a counterweight, wherein the reinforcing frame comprises a side reinforcing frame and an internal reinforcing frame, the side reinforcing frame is a protrusion fixed on the outer edge of one side of the plate, and the internal reinforcing frame is a protrusion fixed inside the side reinforcing frame; the hole is a hole opened at a predetermined position of the reinforcing frame; and the counterweight is arranged in the frame of the reinforcing frame.

Embodiments of the present application provide a rotating speed control method and device, a vertical axis wind turbine and a storage medium, and relate to the technical field of wind turbine control. The method adjusts the motor side load voltage which is inversely related to the rotating speed of the vertical axis wind turbine, according to the operating stage of the vertical axis wind turbine, the real-time tip speed ratio, the real-time rotating speed, and the preset parameters obtained from the corresponding tip speed ratio-power coefficient curve of the vertical axis wind turbine, to control the rotating speed of the vertical axis wind turbine in each operating stage, so as to take the tip speed ratio and the real-time rotating speed as the control variables, integrate all operating stages such as real-time calibration, dead zone identification, resonance avoidance, power tracking and safe shutdown into the same control framework, and enable the vertical axis wind turbine to have the intelligent operating ability of "acting according to the wind and adjusting the rotating speed according to the demand" like a wind turbine with variable pitch.

This invention relates to the field of wind power generation technology, specifically disclosing a novel vertical axis wind turbine structure, including: a main shaft, a support frame, and wind-catching canvas blades. The wind-catching canvas blades are connected to the main shaft via a frame. When there is wind, the rear of the sail inflates in the direction of the wind, generating a force perpendicular to the support frame, driving the entire turbine to rotate in a fixed direction. This avoids the potential negative torque generated on the back of the blades of the vertical axis wind turbine, improving the efficiency of wind power conversion to electricity. Because the sail blades use soft, lightweight sail material, the overall weight of the generator structure is significantly reduced, enabling startup at extremely low wind speeds, while also significantly reducing the overall material cost of the turbine. Noise is generated when a single sail changes its inflating direction; this noise is reduced by using multiple thickened narrow strips of canvas sewn together.

The application discloses a stratosphere area residence resistance type vertical axis power generation system and an application method thereof, and relates to the field of power generation. The system comprises a high altitude balloon, a fixed length connecting rope, an adjustable connecting rope, a connecting rope adjusting device and a resistance type vertical axis wind turbine. The high altitude balloon is connected with the fixed length connecting rope through a flange plate. The fixed length connecting rope suspends the connecting rope adjusting device. The upper end of the adjustable connecting rope is connected with a roller of the connecting rope adjusting device. The resistance type vertical axis wind turbine is suspended through the adjustable connecting rope. The application combines the function of a floatation device with the resistance type vertical axis wind turbine to form a double floatation device system. The high altitude balloon is connected with a high altitude wind power generation device through the connecting rope. The east-west direction aerodynamic forces of the two are in opposite directions and are offset to each other, so that the area residence is realized and the working height of the resistance type vertical axis wind turbine is effectively improved.

The present invention relates to a modular individual polygonal module grouping device of 5 to 9 sides (100) of wind or hydro energy comprising a wind or hydro block (10) with vertical axis and a cage (20) having the form of a right prism with polygonal base of 5 to 9 sides, in which said two bases (21a, 21b) are connected to each other at the level of their respective vertices (23a, 23b) by uprights (24) arranged so that each face (22) forms a panel open in its center for a passage of air through said face (22);and wherein said block (10) comprises a stage formed (11) by lower (12a) and upper (12b) plates that are superimposed in pairs, said plates (12a, 12b) being circular in shape, parallel to each other, and connected rigidly by blades (13), said block (10) being mounted for rotation inside said cage (20) such that the fluid exerts a stress on each of the blades (13) causing said block (10) to rotate about itself. Abbreviated figure: Figure 1;

The invention provides an apparatus for introducing skew to a fluid flow directed on to one or more vertical axis turbine, the apparatus comprising a support structure (2, 4, 6) having mounted thereon a plurality of vertically spaced aerofoils (8) arranged to surround the one or more vertical axis turbines, the vertical spacings being selected and the aerofoils being profiled and arranged at an angle such that fluid flow between the aerofoils is skewed before it is incident upon the vertical axis turbine(s).

A vertical axis wind turbine with movable wings comprises a generator, a central main shaft, a tower, a transmission frame, movable wings, wherein the movable wings are uniformly arranged along the circumference of the central main shaft, and each movable wing comprises a movable wing, a structure frame, a limiting device, a bearing, a shaft, and a counterweight, one side of the movable wing is provided with a reinforcing frame, the counterweight is arranged in the reinforcing frame, a hole is formed in a predetermined position of the reinforcing frame, the bearing and the shaft are connected with the structure frame along the axis of the hole, and the limiting device limits the rotation range of the movable wing in the structure frame; the outer side of the transmission frame is connected with the movable wings, the inner side of the transmission frame is connected with the central main shaft; the central main shaft is connected with the generator; the tower supports the central main shaft and is coaxial with the central main shaft; and the generator is fixed to the tower.

The present application provides a wind direction adjusting device in which the adjustment amount of the wind direction is not easily limited by the swing angle of the louvers. The wind direction adjusting device (1) has a cylindrical housing (3) in which a wind path (4) is formed. The wind direction adjusting device (1) has a shaft support body (5) having a rotation axis (X) in a direction intersecting the axial direction of the housing (3) and rotatably arranged in the wind path (4). The wind direction adjusting device (1) has louvers (6) having a rotation axis (Y) in a direction intersecting the rotation axis (X) of the shaft support body (5) and rotatably supported by the shaft support body (5). The wind direction adjusting device (1) has a fin portion (20) located at a position further upstream of the wind path (4) than the louvers (6) and rectifying the wind passing through the wind path (4) by rotating with the rotation of the shaft support body (5).

A vertical wind turbine includes a shroud for directing vehicle-created wind towards the turbine blades, which are oriented in response to wind direction.

A compact wind turbine system arranged for retrofitting to existing poles is provided. The invention achieves its objectives using a twin vertical axis wind turbine downwind from a diverter shield.

The invention provides an apparatus for introducing skew to a fluid flow directed on to one or more vertical axis turbines, the apparatus comprising a support structure having mounted thereon a plurality of vertically spaced aerofoils arranged to surround the one or more vertical axis turbines, the vertical spacings being selected and the aerofoils being profiled and arranged at an angle such that fluid flow between the aerofoils is skewed before it is incident upon the one or more vertical axis turbine.

[Problem] The current vertical wind power generators have low power efficiency, resulting in low electricity generation capacity, and due to this factor, the installation of these power generators is still not widespread in the market, and in order to promote widespread use of small vertical generators in the future, there is a need to enhance the electricity generation capacity by improving the current wind power generator systems to increase the power efficiency and enhance the electricity generation capacity. [Solution] Conventional vertical wind power generators include Darrieus type, Savonius type, and straight type, but despite being in practical use, these are not widespread. The contributing factors and causes include a problem with rotor start-up. The insufficient rotor torque, which as a matter of course makes it difficult to achieve sufficient electricity generation capacity, is also presumed to be a cause. In order to generate electricity with a vertical wind power motor, it is considered to be necessary to renew the design by devising a wind power generator having a structure capable of increasing the rotor torque of a wind turbine and efficiently rotating the generator at a low to high rotation speed to achieve sufficient electricity generation efficiency. Thus, on the basis of a completely new idea, crescent-shaped paddle-type wind-receiving blades are disposed on the upper surface of a drum-shaped cylindrical rotor, on surface portions of the rotor, one end of each of the wind-receiving blades is disposed via a support shaft, and a spring is disposed inside the support shaft. When rotating by being exposed to wind, the wind-receiving blades each open with the support shaft as a fulcrum on the outside of the cylindrical rotor, catch the wind, and rotate, and when in reverse, the wind-receiving blades are configured to rotate by merging with the cylindrical rotor, overlapping the surface portions of the cylindrical rotor due to the action of the spring

This invention relates to the field of wind power generation technology and discloses a flexible low-wind-speed vertical axis wind power generation device, including a support column and a generator. A rotating rod is installed at the input end of the generator. A turntable is fixedly connected to both the top and bottom ends of the rotating rod. A support frame is fixedly connected to the outer side of the turntable. Five shaping frames are fixedly connected to the outer sides of the two support frames. Main blades are fixedly connected to the outer sides of the shaping frames. An auxiliary power generation component is disposed on the outer side of the rotating rod. The auxiliary power generation component includes two semi-cylinders. The inner sides of the semi-cylinders are fitted to the outer side of the rotating rod, and locking blocks are fixedly connected to the inner sides of the semi-cylinders. In this invention, the generator and flange are detachably connected using bolts. The mounting post at the bottom of the flange precisely matches the mounting groove at the top of the support column, forming a quick-locking structure with the help of a connecting rod, locking cap, and spring assembly. Compared with traditional non-detachable welding or multi-bolt assembly methods, this significantly shortens the assembly time.

A compact wind turbine system arranged for retrogradation of an existing pole string is provided. The purpose is achieved by adopting a double-vertical-axis wind turbine in the downwind direction of the flow guide cover.

A device (10) for installing a blade assembly (12) at a rotor receiver unit (14) of a vertical axis wind turbine (3). The turbine is configured to be arranged at an elongated support pillar (5). The blade assembly comprises a blade (20) and a strut (22). The device comprises a first installation pivot (30) a second installation pivot (32), a third installation pivot (34) and a displacement arrangement (40) configured to hold and guide a displacement of one of the second installation pivot and the third installation pivot between a first position and a second position. The displacement of the second installation pivot or the third installation pivot is such that, in the first position, the second installation pivot or the third installation pivot is located further away from the first installation pivot than when the second installation pivot or third installation pivot is located in the second position.

We provide a vertical-axis wind turbine that can generate electricity stably without causing noise pollution, even in light or strong winds. [Solution] At low wind speeds, the fins 5 are widely extended on the outside of the wing 1, rotating the generator 3 with strong torque to enable power generation even in weak winds. In strong winds, the fins are retracted into the wing to prevent over-rotation, changing the shape to one that is less sensitive to wind force and creating a braking force, thus preventing damage. Furthermore, since the necessary power sources within the wing are replaced by gravity, centrifugal force, and the restoring force of the spring, no special external power source is required.

The invention discloses a vertical shaft impeller with a horizontal inhaul cable and a wind turbine generator. The device comprises an impeller and an inhaul cable assembly. The impeller comprises straight blades, an impeller support and an impeller rotating shaft. The straight blades are tail-swinging type variable wing type blades. The inhaul cable assembly comprises an inhaul cable ring, an inhaul cable supporting piece, an inhaul cable fixing piece and a speed limiting tension spring. Each group of inhaul cable rings is of a closed polygonal structure formed by connecting an inhaul cable and at least one speed limiting tension spring. And each group of inhaul cable rings is arranged on the wing surface, close to the impeller rotating shaft, of the movable wing-shaped part through an inhaul cable fixing piece and an inhaul cable supporting piece. The inhaul cable fixing piece is connected with the inhaul cable supporting piece. Each group of inhaul cable rings is supported by a plurality of inhaul cable supporting pieces and can move relative to the inhaul cable supporting pieces. The inhaul cable rings balance the centrifugal force of the blades mutually, and a proper attack angle is guaranteed. The inhaul cable ring moves relative to the blades and adapts to the change of the distance between the blades, and the speed limiting tension spring can enable the blades to continuously swing outwards under the driving of centrifugal force, so that the aerodynamic force of the blades is greatly reduced, and overspeed braking is completed.

This invention discloses a passive pitch vertical axis wind turbine, relating to the technical field of vertical axis wind turbines. It includes a main shaft with blade supports mounted on its outer periphery; multiple blades evenly distributed along the circumference of the main shaft; blade limiting baffles fixed on the blade supports; and a blade angle-of-attack adjustment mechanism, including an adjustable tilting slide bar, an elastic element, and centrifugal claw assemblies. Each blade support is hinged with a tilting slide bar; a centrifugal claw assembly is slidably connected to each tilting slide bar; an elastic element is installed between each centrifugal claw assembly and its corresponding tilting slide bar. When the main shaft rotates, it drives the centrifugal claw assemblies to rotate. Under the action of centrifugal force, each centrifugal claw assembly overcomes the elastic damping force of its corresponding elastic element and slides along the length of its corresponding tilting slide bar, thus contacting the blade surface and driving the blade to rotate to change its angle of attack. This invention effectively improves its self-starting capability, low-wind-speed operating efficiency, and wind energy utilization rate.

To provide a wind power generator capable of smoothly rotating a vertical rotational shaft.SOLUTION: A wind power generator 1 comprises: a vertical rotational shaft 3 that transmits rotational force to a power generation motor 7; a plurality of arms 4 extending radially from the vertical rotational axis 3 at equal intervals; and a plurality of blades 5 provided at the tip part of each arm 4. The blade 5 has a wind receiving panel (receiving plate) 51 whose outside surface is curved in a concave shape, and a curved airflow storage part 52 formed so as to protrude forward in a rotational direction of the wind receiving panel 51, where the height positions of the blades 5 adjacent to each other in the rotational direction are made different.SELECTED DRAWING: Figure 2

This invention relates to a full-range wind-catching vertical axis wind turbine, belonging to the field of wind power generation technology. Specifically, it includes a central generator assembly, an upper support frame, and a lower support frame. The upper support frame is mounted on the top of the central generator assembly, and the lower support frame is mounted on the bottom. Multiple first wind-catching blades are installed between the outer edges of the upper and lower support frames, and multiple second wind-catching blades are installed between their inner edges. The second wind-catching blades are arranged between the intervals of the first wind-catching blades and are located behind the first wind-catching blades. The first wind-catching blades are symmetrical streamlined blades with a variable cross-section structure, and the leading edge of the blade has a wave-shaped concave-convex structure arranged along the length of the blade. The second wind-catching blades are asymmetrical power function fused reference curve curved blades. This invention has a reasonable structural design, and through the reasonable distribution of airflow by the wind-catching blades, it can fully capture the stable airflow on the outer diameter of the wind turbine and the chaotic vortex inside the wind turbine.

The utility model relates to the technical field of wind power generation, in particular to a power device of a vertical wind driven generator, which realizes the area change of a windward side and a headwind side through the overlying of long fan blade plates and short fan blade plates, and realizes the maximization of the area of the windward side and the minimization of the area of the headwind side. Different stress conditions when wind blows to the windward side and the headwind side are realized; fixed fan blades in the prior art are changed into the curtain type fan blades capable of rotating, the area difference between the windward side and the headwind side is achieved, and self-starting is achieved; the operation of the device is not influenced by the wind direction, and the device can freely operate in any wind direction; the number of maintenance and electric auxiliary systems is small, the fan main shaft is driven to rotate through alternate closing, a load can be driven to rotate by additionally arranging a speed control system, wind energy is converted into mechanical energy, unpowered starting and small-resistance operation of the vertical fan are achieved, and the working efficiency of the vertical fan is greatly improved.

The present specification relates to a variable radius impeller comprising: a frame assembly configured for coupling to a generator; a plurality of blades for generating rotational force around an axis of rotation defined by the frame assembly, each blade rotatably mounted to the frame assembly; and a plurality of actuation rods, each actuation rod operably connected to an opposing pair of the plurality of blades, the opposing pair comprising a first blade and a second blade; wherein a driving force of wind on an outer surface of the first blade causes the first blade to move in a closing direction to decrease wind resistance, which in turn causes the corresponding actuation rod to simultaneously push the second blade in an opening direction to increase wind capture.

The present invention provides a wind turbine, a wind power generation device, and a building that can suitably perform wind power generation using wind from multiple directions. [Solution] A wind turbine 100 that rotates around a rotation axis, comprising: a savonius section 130 that rotates in the direction of wind turbine rotation with respect to wind force in a direction perpendicular to the axial direction of the rotation axis; and a propeller section 140 provided on at least one of the axial directions of the savonius section 130 and the other side, and that rotates in the direction of wind turbine rotation with respect to wind force in the axial direction.

This invention discloses a magnetically controlled speed-limiting vertical axis wind turbine, comprising a generator, a main shaft, a connecting arm, and blades. The connecting arm includes a main component, a tail plate, a pin, a mass block, a large elastic component, a magnet, and a small elastic component. During operation, this invention utilizes the centrifugal force generated by the rotation of the mass block and the magnetic force of the magnet to control the opening of the tail plate of the connecting arm, thus limiting the rotational speed of the vertical axis wind turbine. Simultaneously, the elastic force of the large elastic component, the gravity of the tail plate, and the magnetic force of the magnet control the automatic closing of the tail plate. This magnetically controlled speed-limiting structure requires no electricity, automatically limits the rotational speed of the vertical axis wind turbine, and provides precise control. The tail plate only automatically opens when the rotational speed exceeds a set threshold. The entire mechanical structure is simple, stable, and reliable.

Vertical axis wind turbines (VAWT) and methods of installing. In some embodiments, the VAWT includes a stage and a deflector. The stage includes two turbine sub-units, each with a rotor. The rotors are arranged to rotate (in response to incident wind) in opposite directions, with the rotor blades intermeshing during rotation. The deflector diverts the incident wind from interfacing with a parasitic side of the blades as they rotate. In some embodiments, the rotor blades are origami-based, each being created at an installation site from a flat sheet imparted with origami-type features.

A turbine with an associated shaftless electric generator is disclosed. The generator includes a rotor and a stator; a mounting plate rotatable with the rotor and a void along a central axis of the rotor. A plurality of blades extend from the mounting plate. Adjustable bearings are interposed between the rotor and the stator, the adjustable bearings being configured to support the mounting plate and the plurality of blades. A threaded adjustor rod located in the void may be manipulated to adjust tension on the adjustable bearings.

The present invention has a mechanism whereby, at low wind speeds, fins (5) are opened wide at the outside of a blade (1) and a generator (3) is rotated with strong torque to enable power generation in a weak wind and, in strong winds, the fins are stored inside of the blade to prevent excessive rotation, changed into a shape insensitive to wind strength, and changed into a shape generating braking force to avoid breakage. Furthermore, since gravity, centrifugal force, and the restoring force of a spring substitute for a power source required in the blade, no special power source from the outside is required.