212 results about "Vertical axis wind turbine" patented technology

The invention discloses an operation control method and device for a vertical axis wind turbine generator, and belongs to the technical field of wind power generation. The method comprises the steps that a pitch angle of a lower blade is driven to be gradually increased to a preset angle at a preset angular speed through a variable pitch controller; when the rotating speed of the wind wheel reaches the cut-in rotating speed, the optimal tip speed ratio is tracked until the rotating speed of the wind wheel rises to the rated rotating speed; when the rotating speed of the wind wheel reaches the rated rotating speed, the rotating speed of the wind wheel is stabilized at the rated rotating speed; when the driving torque under the action of the aerodynamic load continuously exceeds the rated torque of the generator and the rotating speed of the generator reaches an early-warning rotating speed threshold value, a shutdown control strategy is triggered; and under the shutdown control strategy, the connection between the generator and the power grid is cut off, and mechanical braking is applied, so that the wind wheel stops rotating. According to the technical scheme, smooth starting of the wind wheel, stable operation at the rated rotating speed and safe shutdown in the fault state are achieved, the starting and stopping capacity and power stability of the unit are effectively improved, the wind speed application range is expanded, and it is guaranteed that the whole-process operation of the unit is safe and reliable.

The invention relates to the field of wind driven generators, and particularly discloses a floating type vertical axis wind turbine multi-partition variable pitch control strategy which comprises the steps that S1, basic parameters and operating condition parameters of a unit are obtained; s2, establishing an aerodynamic model based on a double-disk multi-flow management theory and a superposition wind speed method; s3, measuring parameters through a sensor, and calculating a theoretical attack angle of the blade; s4, establishing a multi-partition pitch angle change function based on the theoretical attack angle; s5, constructing an NSGA-II multi-target optimization model, and taking maximization of an average power coefficient and minimization of a blade thrust standard deviation as targets; s6, substituting a function to obtain an optimal variable pitch control factor and an optimal pitch angle; and S7, the optimal pitch angle is converted into a variable pitch actuator instruction. The problems that an existing strategy is limited in partition, the wind direction influence is ignored, and optimal parameters for working condition adaptation are lacked are solved, the wind energy capture efficiency is improved, the load fluctuation is reduced, and the variable pitch control accuracy is improved.

The invention discloses a method for calculating aerodynamic characteristics of a vertical axis wind turbine. The method comprises the following steps: establishing a computational fluid mechanics model and a free vortex wake model and forming interaction, segmenting a blade and establishing a two-dimensional local area, and initializing flow field and vortex wake parameters; calculating an induced flow velocity sum of each vortex element in the center of a local area, and loading the induced flow velocity sum and a far-field incoming flow velocity to a boundary node; the airfoil action is equivalent to point vortex and dipole flow at the circle center, and induced velocities of the point vortex and the dipole flow at boundary nodes are loaded; carrying out fluid mechanics parameter calculation on the flow in each two-dimensional local area; integrating the airfoil surface pressure to obtain a lift force, and calculating a circular rector to update the point vortex intensity; the dipole flow intensity is calculated and updated through the flow velocities of the three specific observation points. The method for calculating the aerodynamic characteristics of the vertical axis wind turbine is high in calculation efficiency and reliable in precision, the aerodynamic characteristics of the vertical axis wind turbine are accurately obtained with small calculation amount, and powerful support is provided for structural design and optimization of the vertical axis wind turbine.

The invention relates to the technical field of vertical axis wind driven generators, and discloses a control method, device and equipment of a vertical axis wind driven generator, a medium and a product. The control method of the vertical axis wind driven generator comprises the steps that according to historical environment data around a target vertical axis wind driven generator and historical operation data of the target vertical axis wind driven generator, the target vertical axis wind driven generator is controlled; determining a target relationship between the environmental condition and the optimal operation parameter combination; according to the current environment data around the target vertical axis wind turbine, predicting the environment trend in the preset time period to obtain environment prediction data; determining a target operation parameter combination according to the environment prediction data and a target relationship between the environment condition and the optimal operation parameter combination; the target vertical axis wind turbine is controlled according to the target operation parameter combination in the preset time period, the target vertical axis wind turbine is controlled according to the dynamic environment change, and the power generation efficiency is improved.

The invention relates to the technical field of state monitoring and fault diagnosis of wind power generation equipment, and discloses a fault diagnosis system and method for a vertical axis wind power generator based on digital twinning, and the system comprises a physical sensing unit, a digital twinning body, an intelligent diagnosis engine, and a predictive maintenance platform. The physical sensing unit deploys a multi-source sensor to collect real-time data; the digital twin body is a high-fidelity virtual model fusing high-precision geometry, multi-physics field simulation and a data-driven degradation model; and the intelligent diagnosis engine realizes fault identification, positioning and mechanism traceability by comparing measured data with simulation data and combining fault mode library matching and virtual fault injection simulation. According to the method, the digital twin which dynamically interacts with the physical entity in real time and is continuously evolved and updated is constructed, the conversion from threshold alarm to mechanism simulation prediction is realized, and the technical problems that in the prior art, multi-source data is isolated, a diagnosis model lacks physical mechanism support, and dynamic simulation and predictive maintenance cannot be carried out are solved.

The invention relates to the technical field of vertical axis wind turbines, in particular to a vertical axis wind turbine based on the Magnus effect, and aims to solve the technical problem that an existing lift force type vertical axis wind turbine is difficult to start in a breeze environment. To this end, the Magnus effect-based vertical axis wind turbine of the present application comprises: a vertical axis; the at least three lifting force blades and the at least three Magnus rotors are connected to the vertical shaft; the driving assembly is used for driving the Magnus rotor; and the control module is electrically connected with the driving assembly and used for controlling starting and stopping of the driving assembly according to the actual wind condition so as to drive the Magnus rotor to rotate, and after the Magnus rotor rotates, the lifting force blades continuously capture wind energy to maintain operation of the vertical axis wind turbine. In this way, the defects that a lift type vertical axis fan is small in starting torque and difficult to start are overcome, and normal starting of the lift type vertical axis fan under the breeze condition is achieved.

A large-scale, modular, wind power generating structure and system involving a toroidal or ovoidal shaped wind amplification structure / module that can be stacked vertically to form a tower that passively accelerates a wind flow that moves around each of the modules due to the Bernoulli Principle. Each amplification level includes a plurality of vertical axis wind turbine and generator assemblies, fairings, and vanes that form a synergistic system wherein the efficiency of the vertical axis turbine and generator assemblies and the amount of energy that can be produced per module are substantially improved compared to the turbine assemblies operating outside the integrated and amplified wind system.

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.

The invention provides a two-dimensional flow field calculation method and system for a vertical axis wind turbine, and relates to the technical field of computational fluid mechanics, and the method comprises the steps: building a two-dimensional numerical model for a middle plane of the vertical axis wind turbine; based on the two-dimensional numerical model, determining a two-dimensional flow field of the vertical axis wind turbine at the current moment; according to the two-dimensional flow field, blade lift force is determined; generating a target blade tip vortex element, and calculating the strength of the target blade tip vortex element through the Rogowski lift theorem; updating the position and strength of the vortex element of the blade tip vortex; traversing all grids in the two-dimensional flow field drainage basin based on the updated blade tip vortex elements, and for each grid, calculating the blade tip vortex induced velocity of the position where the grid is located; calculating and applying a required mass source item and a required momentum source item according to the induced velocity; and after the preset updating frequency is reached, outputting a calculation result. The calculation amount is reduced, and the calculation efficiency and accuracy are improved.

The invention discloses a vertical axis wind turbine integrated with auxiliary motor starting, and belongs to the technical field of wind power generation. Comprising a base, a generator is fixedly connected to the right side of the upper surface of the base, an outer disc is fixedly connected to the top end of the output end of the generator, a blade assembly is fixedly connected to the upper surface of the outer disc, a transmission assembly is fixedly connected to the left side of the upper surface of the base, and a fluted disc is fixedly connected to the outer side wall of the outer disc. The transmission assembly is in meshed connection with the fluted disc; through the exquisite design of the transmission assembly, the bottleneck of low-wind-speed starting of traditional equipment is effectively broken through, and the applicability and practicability of the equipment are remarkably improved. In the initial state of the equipment, the electric telescopic rod on the base is in an extending state, the transverse block stops at the initial position of the side groove, the sliding block is located at the tail end of the sliding groove, the auxiliary gear and the fluted disc are kept in a separated state, and interference between components in a non-working state is avoided.

The utility model provides a high-pole lamp with a wind power energy storage device, which relates to the technical field of lighting street lamps and comprises a control mechanism, the control mechanism comprises a mounting base, a controller is arranged on one side of the mounting base, a console is arranged on one side, far away from the controller, of the mounting base, and a splicing mechanism is arranged on the mounting base. According to the high-pole lamp, the vertical-axis wind driven generator is arranged, wind power can be used for generating power, autonomous power supply is achieved, dependence on the mains supply is reduced, energy can be stored through power generation under the condition that the wind power is sufficient, continuous and stable power supply is provided for the high-pole lamp and accessory equipment of the high-pole lamp, and therefore the power cost is greatly saved; and the energy utilization efficiency is improved.

The invention discloses a vertical axis wind turbine with self-adaptive deformation blades and a control method. The vertical axis wind turbine comprises a main shaft and a rotating sleeve arranged on the main shaft. The folding and unfolding piece comprises a fixed blade, a folding blade, a containing cavity formed in the fixed blade and a rotating shaft arranged at one end of the folding blade, and the rotating shaft is embedded in the containing cavity; the driving parts are arranged in the rotating sleeve, and the number of the driving parts is matched with that of the stretching parts; wherein the folding blades can rotate along the rotating shaft to be placed into the containing cavity or unfolded, when the fixed blades and the folding blades are folded, the vertical-axis wind driven generator is used as a lift force type wind driven generator, and when the fixed blades and the folding blades are unfolded, the vertical-axis wind driven generator is used as a lift force type wind driven generator. After being matched with the controller and the anemograph, the vertical-axis wind turbine can be automatically switched into a lift type and a resistance type according to the wind speed, and efficiency maximization can be achieved without manual intervention.

The utility model discloses a novel vertical axis wind turbine based on a 3D printing technology. Comprising two sets of resistance type blades, a set of lift type blades and the like, the contact area between the resistance type blades and wind is enlarged through a spiral structure, the starting torque and the wind energy capturing efficiency are improved, and the lift type blades can maintain efficient conversion at medium and high wind speeds and can provide balance for the whole fan; the rotating speed of the blades is regulated and controlled through inner and outer shafts and a gear speed change device, light-weight and modular manufacturing is achieved in combination with a 3D printing high-performance composite material, and a wind speed sensor is integrated. PID (Proportion Integration Differentiation) control parameters are dynamically optimized by adopting a BP (Back Propagation) neural network, the optimal tip speed ratio of a resistance type fan blade and a lift type fan blade is matched according to real-time wind speed, and when the resistance type fan blade reaches the optimal tip speed ratio, an operation mode is switched through a separation device, so that the lift type fan blade and the resistance type fan blade independently operate to ensure that the lift type fan blade reaches the optimal tip speed ratio; the utility model aims to give consideration to high starting performance and stable and efficient power generation.

The invention relates to the technical field of wind power generation, in particular to a coaxial reversal bimodal vertical axis wind turbine. An upper connecting piece and a lower connecting piece are arranged at the upper end and the lower end of a fixed shaft respectively, and lifting force type blades are arranged between the upper connecting piece and the lower connecting piece. The rotating shaft is connected to the outer side of the fixed shaft through a bearing, the resistance type blade is fixedly arranged on the rotating shaft, and the lift type blade and the resistance type blade coaxially and reversely rotate; a first power generator is arranged on the fixed shaft and below the lift type blade, the lift type blade is connected with the first power generator through a lower connecting piece, a second power generator is arranged on the fixed shaft and below the rotating shaft, and the resistance type blade is connected with the second power generator through the rotating shaft. According to the wind driven generator, structural decoupling and function cooperation of the lift type blades and the resistance type blades can be achieved, the wind speed application range is widened, and stable operation and power generation efficiency of the whole generator are improved.

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.

The invention discloses a vertical axis wind turbine blade structure, which relates to the field of wind power generation, and comprises a basic platform, a rotating rack, two blade bodies and two linear telescopic components, the rotating rack is rotatably mounted on the upper part of the basic platform, the bottom end of each blade body is hinged to the upper part of the rotating rack, and the two blade bodies are symmetrically arranged; the lower end of each linear telescopic component is hinged to the lower portion of the rotating rack, and the upper end of each linear telescopic component is hinged to the outer side of one blade body. According to the blade structure of the vertical-axis wind driven generator, the blade tip speed ratio and the sweeping area can be changed, the utilization hours of the wind driven generator are increased, and the survival wind speed of the wind driven generator is increased.

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.

This invention discloses a method for establishing a biomimetic vertical axis wind turbine model. It relates to a model establishment method. This invention aims to address the problem of low power generation efficiency in existing vertical axis wind turbines due to blade limitations. The steps of this invention include: Step 1, selecting the NACA0021 airfoil as the blade profile; Step 2, the shape of the leading edge protrusion of the wind turbine blade is a sine curve, and the convex peak cross-section profile is obtained by transforming the basic airfoil; Step 3, dividing the computational domain into an external fixed domain and an internal rotating domain; Step 4, calculating the wind turbine flow field using ANSYS Fluent software; Step 5, verifying the accuracy of the numerical simulation of the vertical axis wind turbine. This invention belongs to the technical field of biomimetic vertical axis wind turbines.

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.

A vertical axis wind turbine (VAWT) (100) for structural support and aesthetic integration with residences and buildings is provided. The turbine (100) is coupled to a substantially circular track (114) located near its periphery that at least partially supports the weight of the turbine while allowing rotation. The VAWT (100) may be used as a roof of a residential or other conventional building type as a support structure (112). The number of blades (102) may be three or five, and the turbine (100) may be located on a building having a polygonal profile. The turbine (100) may be supported on the rail (114) and may include a support cantilever (116) that extends beyond the support structure (112) and is connected to the rail (114) using a C-shaped bearing (122). A shaft (106) of the turbine (100) is connected to a gear (110) that transmits torque to one or more generators (108). The creative wind driven generator system provides an efficient and visually attractive integrated solution for generating renewable energy sources.

1. The name of the design product: household 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.

1. The name of the design product: vertical axis wind turbine (with flexible thin film solar energy). 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 1.

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.

The utility model discloses a blade mounting structure of a vertical axis wind turbine, which belongs to the technical field of blade mounting structures and comprises two mounting ends of the generator, and one side of each of the two mounting ends of the generator is provided with a same blade body. According to the utility model, the limiting frames are fixedly mounted at one ends of the two mounting ends of the generator, and the two L-shaped insertion plates are mounted on the surfaces of the blades, so that during use, a user inserts the two L-shaped insertion plates into the inner walls of the two limiting frames respectively, and then the two L-shaped insertion plates are limited through the limiting units; in the follow-up use process, even if the blades are driven by the two installation ends of the generator, the blades subjected to centrifugal force can drive the two L-shaped insertion plates to abut against the inner walls of the two limiting frames, and compared with the mode that the blades are directly installed at the two installation ends of the generator through bolts, the blades can be installed more stably. And in addition, tools are not needed.

To provide a hybrid vertical wind turbine that can realize the efficiency of a lift-type wind turbine at high wind speeds while ensuring the startability of a drag-type wind turbine at low wind speeds. [Solution] The blade 120 is supported by a main arm 112 extending radially outward from the main shaft 110 so as to be rotatable around a pitch axis parallel to the main shaft 110, and is provided with an auxiliary arm 114 that is installed separately from the main arm 112 to connect the main shaft 110 and the blade 120 and regulates the rotation angle (pitch angle) of the blade 120, and when the wind speed is below a predetermined level, the auxiliary arm 114 is installed on the blade 120 so that the rotation center β is at a position horizontally offset from the main shaft 114 depending on the wind direction, and is provided with an offset cancellation mechanism that cancels the offset when the wind speed exceeds a predetermined level.

This invention provides a method for predicting the power of a vertical axis wind turbine based on multidimensional environmental data. It relates to the field of vertical axis wind turbine power technology using multidimensional environmental data. The invention utilizes a sensor network to collect multidimensional data in real time, including environmental parameters such as wind speed, turbulence intensity, temperature, and humidity; operating states such as rotor speed and blade pitch angle; and structural responses such as blade strain and vibration acceleration. Next, empirical mode decomposition is performed on the vibration acceleration signal to construct a physical information neural network. Using environmental data and the frequency domain energy spectrum of aerodynamic loads as input, the real-time wind energy utilization coefficient and aerodynamic coefficients are output. Finally, based on the time domain signal of the aerodynamic loads, online rainflow counting with dynamic window length is used to extract the load cycle spectrum. Combined with a humidity-corrected fatigue damage model, the cumulative damage value is calculated. When the remaining lifetime is below a threshold, the load peak suppression and power generation efficiency are balanced through the coordinated control of linear decay of magnetoresistive torque and fuzzy PID control of the flaps.

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

The utility model discloses a flow guide type vertical shaft magnetic suspension wind power generation device, which belongs to the field of power equipment and comprises a mounting main body and a rotating part arranged on the mounting main body, the driving part is driven by wind power to drive the rotating part to rotate; the transmission part transmits kinetic energy generated by rotation of the rotating part to the power generator part and converts the kinetic energy into electric energy; and the static air collecting part is used for collecting and accelerating natural air and then guiding the natural air to the driving part. The utility model solves the problem of low power generation efficiency caused by the influence of natural wind resistance in the existing resistance type vertical axis wind driven generator, and adopts an efficient double-turbine structure, a magnetism gathering type permanent magnet suspension bearing and lubrication-free alloy rolling bearing shaft system technology, an efficient blade profile design and a reasonable blade layout scheme. Efficient utilization of wind energy resources is achieved, the input power of wind energy is increased, and the power generation efficiency is improved.