45 results about "Vertical axis wind turbine" patented technology

This invention discloses an aerodynamic test bench adapted to horizontal / vertical axis wind turbines, including a base and a connecting column. The connecting column is located on top of the base, and a test platform is provided above the connecting column. The test platform includes a horizontal bar, and one end of the horizontal bar is provided with... T The horizontal bar has a vertical bar at the other end. T A square platform is mounted on top of the support frame; a dynamic torque sensor is mounted on the square platform, with one end connected to a magnetic powder brake and the other end connected to a wind turbine fixing rod. This invention also discloses an aerodynamic testing method adapted to horizontal / vertical axis wind turbines, including: wind turbine type adaptation installation, basic aerodynamic performance testing (no yaw), yaw condition aerodynamic performance testing, and variable load condition aerodynamic performance testing. T The bracket enables rapid switching between horizontal and vertical axis wind turbines. The combination of a precise yaw system and stepless load adjustment can simulate various complex working conditions such as constant wind speed with varying load and constant load with varying yaw angle.

This invention discloses an aerodynamic optimization design method for scaled-down model blades of large vertical axis wind turbines based on DMST theory. The method includes: determining scaled-down parameters according to wind tunnel similarity criteria; selecting an optimized airfoil for aerodynamic characteristic matching at low Reynolds numbers based on the lift-to-drag ratio characteristics of the prototype blades; constructing an aerodynamic performance model based on dual-disk multi-flow theory, calculating and verifying the theoretical thrust coefficients of the prototype and optimized airfoils; conducting force-pressure tests in a wind tunnel, extracting the pure thrust of the blades by subtracting the total thrust of the turbine from the tower thrust vector; and comparing the measured thrust coefficients with the theoretical thrust coefficients to verify the aerodynamic load matching degree. This invention effectively eliminates the Reynolds number effect in scaled-down tests by combining airfoil optimization, DMST theory verification, and wind tunnel test verification, achieving high-precision matching of aerodynamic loads on scaled-down model blades of vertical axis wind turbines and improving the reliability of wind tunnel test data.

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.

The present invention provide a system and method for generating electricity using a helicoid vertical axis wind turbine. The system comprises a rotor designed for rotation from airflow; a plurality of helicoid blades having an airplane wing profile to generate a lifting force from said airflow, enabling rotation of the rotor; a generator mechanically connected to the rotor to produce electricity upon the rotor's rotation; a controller connected to said generator to process the generated electricity; a battery connected to the controller for storing the processed electricity; and an inverter connected to the battery for converting and supplying the stored electricity. The invention provides more versatile, efficient, and reliable system and method for generating electricity via a helicoid vertical axis wind turbine.

This application provides a flexible grid-connected system for vertical axis wind turbines operating in isolated marine networks. It forms a three-stage series energy buffer and power smoothing architecture through a flexible converter module located on the vertical axis wind turbine side, an energy storage and smoothing unit connected in parallel to the DC bus, and a grid-type converter module located on the marine power grid side. This architecture achieves energy buffering and power fluctuation suppression across the entire chain from mechanical energy to electrical energy of the vertical axis wind turbine across multiple time scales. Simultaneously, the wind turbine converter employs a virtual synchronous generator control strategy, achieving grid-type control. This provides active support for the isolated marine power grid, significantly mitigating the impact of vertical axis wind turbine output fluctuations on the marine power grid and reducing the amplitude of grid-connected power fluctuations. This achieves flexible grid connection and solves the technical problem of ensuring the stability of vertical axis wind turbines operating in isolated marine power grids.

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.

This invention relates to the field of wind power generation technology, specifically disclosing a low-wind-speed active wind-generating wind power generation device and control method, including a base, a support sleeve, a support column, a mounting column, several mounting frames, several vertical-axis wind turbines, a mounting plate, a drive motor, and a lower annular guide rail. This invention solves the problem of low-wind-speed startup of traditional wind turbines. Through a low-power active wind-generating core design, the drive motor power consumption is strictly controlled within 60% of the power generation capacity. It can still stably start generating electricity when the natural wind speed is below 10 meters per second, increasing wind energy resource utilization by more than 60%. Compared to conventional wind turbines, this device overcomes the limitations of low-wind-speed environments, adapting to a wide range of scenarios including plains, urban areas, and hilly areas. It does not rely on high-wind-speed wind fields, significantly expanding the application range of wind power generation. Simultaneously, the rotating wind-generating mechanism creates a stable relative airflow, avoiding power generation interruptions caused by natural wind fluctuations, achieving continuous net power generation in low-wind environments.

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 utility model relates to wind power generation technical field discloses a kind of vertical axis wind generator blades, comprising: keel;Cable-stayed device is provided with multiple, multiple cable-stayed device is along the length direction interval of keel Setting;First flange plate is parallel interval and set in the side of keel;Second flange plate is parallel interval and set in the other side away from second flange plate;Skin is set on cable-stayed device, first flange plate and second flange plate, the utility model is installed cable-stayed device on keel, first flange plate and second flange plate are respectively installed in the both ends of cable-stayed device, and the frame of installing skin is formed by keel, cable-stayed device, first flange plate and second flange plate, after skin is installed to position at this time, first flange plate and second flange plate are set in the gap position between adjacent two cable-stayed device, at this time, skin is effectively supported at the gap between adjacent cable-stayed device, avoids deformation, improves the overall strength and stability of blade.

This utility model discloses a guide vane for a vertical axis wind turbine, relating to the field of wind power generation equipment technology. It includes a mounting base, mounting holes, and an arc-shaped guide vane. It also includes: a support ring, a power generation component mounted on the mounting base, a fixed column, a T-shaped limiting plate, a rotating mechanism mounted on the fixed column, a pressure sensor, and a regulator. Through the cooperation of the fixed column, T-shaped limiting plate, arc-shaped guide vane, rotating mechanism, pressure sensor, and regulator, the pressure sensor detects the wind force acting on the arc-shaped guide vane in real time and transmits the information to the regulator. The regulator controls the rotating mechanism to rotate the arc-shaped guide vane, automatically adjusting the angle of the arc-shaped guide vane according to changes in wind speed, thereby improving adaptability in complex and variable wind environments.

The utility model discloses a photovoltaic wind power generation integrated ventilation and exhaust fan, by photovoltaic power generation subassembly, vertical shaft aerogenerator, battery, control electric appliance, ventilation and exhaust fan is constituted photovoltaic wind power generation integrated ventilation and exhaust fan, adopts photovoltaic power generation subassembly and wind driven generator, battery storage and provides electric power, drives ventilation and exhaust fan operation. Can not use external power supply, installs independently in the place needing ventilation and exhaust, realizes the effect of saving electric energy, ventilation and exhaust.

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 application discloses a large vertical axis fan wind tunnel scale model blade aerodynamic optimization design method based on a DMST theory, and comprises the following steps: determining scale parameters according to wind tunnel test similarity criteria; selecting an optimized airfoil with matched aerodynamic characteristics under low Reynolds number based on the lift-drag ratio characteristics of a prototype blade; constructing an aerodynamic performance model based on a double disk multi-flow management theory, calculating the theoretical thrust coefficient of the prototype and the optimized airfoil, and performing matching verification; carrying out a force-measuring and pressure-measuring test in a wind tunnel, stripping the pure thrust of the blade by subtracting the total thrust of the whole machine from the thrust vector of the tower column; and comparing and verifying the aerodynamic load matching degree by comparing the measured thrust coefficient with the theoretical thrust coefficient. The application combines airfoil optimization, DMST theory verification and wind tunnel test stripping verification, effectively eliminates the Reynolds number effect in the scale test, realizes high-precision matching of the aerodynamic load of the vertical axis fan scale model blade, and improves the reliability of the wind tunnel test data.

The present application relates to the technical field of H-type vertical axis wind turbine blade, and particularly relates to a blade structure of an H-type vertical axis wind turbine which is formed by compounding a once-pultruded carbon fiber core material with other carbon fiber materials.1. The present application can improve the structural strength of the vertical axis wind turbine blade and solve the problem of fatigue fracture of the vertical axis wind turbine blade.2. The present application effectively utilizes the advantages of the carbon fiber pultrusion process, greatly improves the tensile properties in the length direction of the blade, and combines the core material and the composite material skin to improve the stiffness in the remaining directions of the blade.3. The carbon fiber pultruded plate and the carbon fiber fabric are laminated and combined to manufacture the blade contour; the core material used has high shear strength and compression stiffness; and the blade synthesized with other materials can effectively prevent buckling and resist planar shear load.4. The carbon fiber composite material blade structure of the H-type vertical axis wind turbine can not only improve the impact resistance and stability of the blade, but also focuses on solving the weight of the blade, reduces the weight of the wind wheel, and makes a major change to the structure.5. The light-weight carbon fiber composite material blade and the wind turbine blade structure can reduce the weight of the wind wheel by 70-80% compared with the traditional aluminum alloy blade, greatly reduce the weight of the blade, and have light weight, high strength, and long product life cycle.

[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

The present application relates to the technical field of communication tower, more particularly, the present application provides a modular vertical axis wind power generation device suitable for communication tower, which comprises a single-pipe tower and a vertical axis wind power generator, the vertical axis wind power generator and the single-pipe tower are spliced through a connecting assembly, the connecting assembly comprises a plug-in mechanism and an inner buckle mechanism, the plug-in mechanism is connected to the lower end shaft of the vertical axis wind power generator, and the inner buckle mechanism is arranged on the inner side of the upper end of the single-pipe tower; the present application realizes auxiliary positioning during assembly and plug-in, improves installation efficiency, then in the process of assembly and plug-in, the inner buckle mechanism can realize automatic locking and positioning, ensures the stable and rapid connection between the vertical axis wind power generator and the single-pipe tower, ensures the stability in the subsequent use process, and does not need to improve the tower body, is provided with a modular structure, so that it can be applied to most vertical axis wind power generators and single-pipe towers, and the installation cost is significantly reduced.

The utility model relates to wind driven generator technical field discloses a fan blade support structure and vertical shaft wind driven generator, include: main shaft, blade assembly and support mechanism, blade assembly includes a plurality of interval settings blade along the circumference of main shaft, support mechanism includes interval settings first support piece and second support piece along the axial direction of main shaft, and support piece includes: carousel and a plurality of connecting arm, carousel sets up in main shaft, a plurality of connecting arms interval settings along the circumference of carousel, and the top end of blade is connected with the one end of connecting arm of first support piece away from carousel, and the bottom end of blade is connected with the one end of connecting arm of second support piece away from carousel, the utility model discloses through the support piece of setting up up and down along main shaft, fixes and connects the top end and bottom end of blade respectively in main shaft, installs firmly under the premise of not destroying the streamline structure of blade, reduces the wind resistance of blade in the rotation process, improves the wind energy utilization rate and power generation efficiency of wind driven generator.

A movable airfoil blade for a vertical axis wind turbine includes: a structural frame, a movable airfoil, a limiting device, a shaft, a rotating support, and a counterweight. A reinforcing frame is mounted on one side of the airfoil's blade, and an opening is formed at a predetermined position on the reinforcing frame. The frame opening is connected to the movable airfoil via the rotating support and the shaft along an axial extension line at the predetermined position. The limiting device includes a first limiting device and / or a second limiting device, which limits the rotation range of the movable airfoil within the frame opening of the structural frame. The counterweight is mounted within the frame border of the reinforcing frame.

The application provides a variable speed ratio vertical axis wind turbine system, comprising: a vertical axis wind rotor with blades; a brake, a multi-gear transmission, a generator, a power battery, and an electric power distribution unit, a gear hydraulic system and a controller electrically connected with the generator. Through the switching and regulation of gears, the generator is always in the high-efficiency power generation area. At the same time, smooth switching of the gearbox gears can be realized during the working process, the impact is reduced, the service life of the generator is increased, the brake can be used for the vertical axis wind turbine, and in the case of emergency, the accumulator can ensure that the wind turbine still has the brake function in the case of failure of the hydraulic system, so that safe, reliable and efficient power generation is ensured.

A vertical axis wind turbine (VAWT) (1) comprising a turbine (102) for coupling to a generator (101), the turbine (102) rotatable about a vertical turbine rotation axis and comprising a plurality of blade devices (2) disposed around the vertical turbine rotation axis coupled via at least one turbine rotor arm (105) to a rotor of the VAWT, each blade device (2) comprising at least one blade (6) and at least one blade actuator (7) coupled to the blade (6) configured to vary a pitch angle of the at least one blade, the turbine further comprising : a sensor system (3) including a blade sensor system, and a control system (4) connected to the sensor system and to the blade actuator (7) in a feedback loop for real-time control of the blade pitch angle, the control system configured to receive measurement data from the sensor system and to output a target blade pitch angle to the blade actuator (7). The blade sensor system (8) further comprises at least one blade deformation sensor (10) arranged on the blade and a plurality of pressure sensors (9) arranged on a surface of the blade, on opposite sides of the blade relative to a chord of the blade, the at least one deformation sensor and plurality of pressure sensors connected to the control system and outputting at least a portion of said measurement data, the control system comprising software configured to compute a fluid flow state around the blade based on the measurement data output by the pressure sensors, the control system further configured to compute said target blade pitch angle based at least on said fluid flow state and an output of said blade deformation sensor as a function of a control objective, said control objective stored in the control system, input into the control system, or computed in the control system as a function of at least a wind condition impinging upon the VAWT.

The present application relates to the field of wind power generation technology, and provides a wind speed prediction method and system for wind power generation regulation, comprising the following steps: step 1, real-time acquisition of the operating state data of a vertical axis wind turbine is sent to a main controller MCU; step 2, the operating state data of step 1 is input into a preset physical and data fusion hybrid prediction model on the main controller MCU to calculate a predicted instantaneous torque; step 3, the predicted instantaneous torque and the predicted speed obtained by the main controller MCU in step 2 are interacted to a converter control unit VCU, the converter control unit VCU calculates an optimal transmission speed ratio, and the converter control unit VCU controls the gear shifting of a multi-gear gearbox connected to the blades according to the optimal transmission speed ratio to make the generator operate in a high-efficiency power generation area to realize maximum power point tracking regulation. The present application solves the problems of severe feedback control lag and low wind energy capture efficiency of the existing vertical axis wind turbine.

1. The name of the design product: vertical axis wind turbine. 2. The use of the design product: for wind power generation. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

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.

1. The name of the design product: vertical axis wind turbine (wind tunnel type). 2. The use of the design product: the design product is used for vertical axis wind turbine. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

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.

1. Name of the product in this design: Vertical Axis Wind Turbine Generator (Constant Power Model). 2. Purpose of this design: To convert wind energy into electrical energy. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention discloses a novel straight-blade vertical-axis wind turbine, comprising: a tower, a wind turbine mounted on the top of the tower, and multiple sets of pitch angle adjustment devices. The wind turbine includes multiple connecting rods, support bearings fixed to the extended ends of each connecting rod, blades rotatably mounted in each support bearing, and positioning bosses fixed to each blade. The blades are eccentrically rotated around a vertical mounting centerline. Each pitch angle adjustment device includes a positioning stop. When the positioning boss contacts the positioning stop, the angle between the blade chord length and the tangent of its revolution forms a pitch angle β. The positioning stop limits the blade to rotate at a pitch angle β within the working range of azimuth angle β to 180°+β. This invention can effectively improve wind energy utilization and solves the problem of difficulties in applying variable pitch technology to vertical-axis wind turbines.