32 results about "Small wind turbine" patented technology

The invention provides a small wind driven generator, and belongs to the field of wind driven generators. The wind power generation device comprises a support cylinder, a vertical supporting column is arranged on the support cylinder, the top end of the vertical supporting column is rotationally connected with a power generation frame, one end of the power generation frame is rotationally connected with a wind power impeller, a generator assembly connected with the wind power impeller is arranged in the power generation frame, and a tail wing is arranged at the other end of the power generation frame. A length adaptive adjusting structure is arranged in the empennage and the power generation frame, the distance between the empennage and the power generation frame is adjusted through the length adaptive adjusting structure, the vertical supporting column is further connected with a lifting structure, and the vertical supporting column is connected with the support cylinder in a sliding mode through the lifting structure.

The utility model discloses an offshore wind power strain monitoring device, which comprises a vibrating wire strain gauge, and monitoring mounting racks are symmetrically arranged on two sides of the vibrating wire strain gauge; the monitoring frame is composed of a first position adjusting mechanism, two telescopic mechanisms, two angle adjusting mechanisms and two clamping mechanisms. A pressing block capable of moving up and down is arranged on the first position adjusting mechanism; the two telescopic mechanisms are symmetrically arranged on the two sides of the first position adjusting mechanism, and one ends of the two telescopic mechanisms are hinged to the pressing block. The two angle adjusting mechanisms are arranged at the other ends of the two telescopic mechanisms correspondingly, and the two clamping mechanisms are connected with the two angle adjusting mechanisms correspondingly. The clamping mechanism comprises a second position adjusting mechanism and a clamp; according to the device, the vibrating wire strain gauges are fixed on the fan blades through the monitoring mounting frames on the two sides, damage of the method to the fan blades is avoided, the mounting steps are simplified, stress monitoring can be effectively carried out, the device is widely suitable for small fan blades of different shapes and sizes, the mounting difficulty is small, and the mounting cost is low.

The invention provides a power-loss protection system of a wind turbine generator and a power supply method thereof. The power-loss protection system provided by the embodiment of the invention comprises a small wind generating set, an MPPT controller, a power-loss protection controller, an anemorumbometer and energy storage equipment, the energy storage device is electrically connected with the power-loss protection controller, the wind turbine generator and the MPPT controller, the MPPT controller is electrically connected with the small wind turbine generator, and the power-loss protection controller is electrically connected with the anemorumbometer; the power-losing protection controller is used for controlling the energy storage equipment to supply power to the wind turbine generator according to wind speed and wind direction data collected by the anemorumbometer in real time when the power grid loses power; and the MPPT controller is used for charging the energy storage equipment by using electric energy generated by the small wind generating set in the operation process of the small wind generating set. The method can automatically supply power to key equipment of the wind turbine generator after the power grid loses power, and has a power supply path independent of the power grid and the wind turbine generator.

The application provides a small wind turbine intelligent speed regulation control method, system and storage medium, and belongs to the field of wind turbine. The method comprises the following steps: determining the current wind condition according to the wind speed; in the case that the current wind condition is long-time strong wind condition, passive speed regulation is carried out through a passive speed regulation component to realize rapid wind avoidance; analyzing the reset torque borne by the tail rudder according to the tail rudder position; calculating the windward component of the wind wheel aerodynamic torque according to the reset torque; obtaining the variable pitch demand of the active speed regulation component according to the wind speed, the windward component of the wind wheel aerodynamic torque and the theoretical relationship curve of the pitch angle, and carrying out variable pitch until the wind turbine is in the windward state; collecting the corresponding relationship among the wind speed, the wind speed change rate, the pitch angle and the windward component of the wind wheel aerodynamic torque when the wind turbine is in the windward state, and generating an actual relationship curve of the wind speed, the wind wheel aerodynamic torque, the windward component and the pitch angle for iterating the theoretical relationship curve of the wind speed, the wind wheel aerodynamic torque, the windward component and the pitch angle.

The application provides a seismic information early warning terminal with a wireless frequency modulation loudspeaker, comprising: a seismic monitoring network communication module, which carries out multi-source communication of seismic early warning information through seismic monitoring network sound source communication and mobile terminal Bluetooth communication; carries out anti-interference communication protection through anti-interference setting; a seismic early warning information conversion module, which converts the signal of the seismic monitoring network communication module into a wireless frequency modulation signal, and receives an infrared remote control signal to carry out infrared remote control; a warning information wireless transceiver module, which carries out wireless frequency modulation signal transceiving communication and state monitoring with a wireless frequency modulation loudspeaker warning module through multiple groups of frequency modulation transmitting and receiving antenna groups; a wireless frequency modulation loudspeaker warning module, which converts the wireless frequency modulation signal into a seismic early warning loudspeaker broadcast trigger signal; a small wind turbine and an electric quantity monitoring storage battery group are used as an emergency power supply; a warning information partition broadcast loudspeaker group is used to carry out partition broadcast or full-area broadcast of seismic early warning information.

The matching auxiliary structure of the wind power generation equipment comprises a wind driven generator and a containing box, a mounting plate is arranged at the bottom of the containing box, a lifting column is arranged on the right side of an inner cavity of the containing box, a lifting device is arranged on the left side of the inner cavity of the containing box, and a supporting piece is arranged on the outer side of the containing box. The lifting device, the supporting piece and the control device are used in cooperation, and the problems that when an existing small wind driven generator is used, most of the existing small wind driven generators do not have the function of adjusting the height of the wind driven generator, maintenance is inconvenient when the wind driven generator breaks down and needs to be maintained, and after installation, the wind driven generator is not convenient to maintain are solved. The problems that in the prior art, existing vertical rods are mostly supported through single independent rods and fixed to the ground through bolts, when large wind power is encountered, the supporting performance of the single vertical rods is poor, shaking may occur, abrasion between the vertical rods and the bolts is serious, and the bolts may be fractured after a long time are solved.

The application relates to a novel isolated network power supply system supported by an underwater energy storage device, which comprises an underwater energy storage system, a photovoltaic power generation system, a wind power generation system, a load system and a control center system; the control center system is used for cooperatively controlling the underwater energy storage system, the photovoltaic power generation system and the wind power generation system according to load demand, and through direct power supply of the photovoltaic power generation system and the wind power generation system and switching of the charging and discharging mode of the underwater energy storage system, stable power supply of the load system is realized. The application provides a system for power supply under isolated network conditions supported by a novel underwater energy storage device, which can simultaneously generate power by a small wind turbine and photovoltaic power generation, and supply power for loads in the isolated network; when fluctuation occurs in the network, the energy storage system can play the roles of voltage stabilization and frequency regulation. Therefore, the application can be widely applied in the technical field of energy storage.

2.1 Conventional drag rotors have convex or concave rotor blades. While the concave turbine parts generate torques acting in the direction of rotation, the convex turbine parts generate torques opposing the rotation. Since the torque responsible for rotation is the difference between the two, the efficiency of such wind turbines is low. The minimum wind speed required for reliable turbine rotation also presents a problem. The new device is intended to generate electrical energy with greater efficiency, even at low wind speeds. 2.2 The device comprises a helical turbine (2) connected to a generator (1). An air guide (5) on the windward side accelerates incoming air masses and, thanks to its rectangular shape, directs them to those blades (3) of the turbine (2) that move with the wind. This baffle prevents convex blades from being impacted by the incoming air. Additionally, outer baffle elements (8) are connected to their respective blades and exhibit a concave shape as they move with the wind direction. 2.3 Due to its vertical axis of rotation, the rotor can be used in small wind turbines for decentralized energy systems.

This invention relates to the field of wind power generation technology, and more particularly to a small wind turbine generator that is easy to maintain. A small wind turbine generator that is easy to maintain includes a base, fan blades, and a power generation unit mounted on the base; two fan blades are arranged on the upper side of the base; it also includes a connecting shaft; a hollow cylinder is arranged on the power generation unit; a pair of fixing blocks are arranged on the outer side of the hollow cylinder, located below each connecting ring; each fixing block is provided with a fixing rod for connecting the fan blades; the fan blades are fixed to the fixing rods. This invention uses an arc-shaped groove to drive two opposing second limiting rods to move horizontally towards the center of a rotating disk, ultimately driving the fixing blocks to move horizontally towards the center of the rotating disk; the fixing blocks drive all the fixing rods and fan blades to move horizontally relative to each other, completing the relative closure of the two fan blades.

This utility model provides a dual-channel small wind turbine, relating to the field of power generation technology. The utility model includes a power generation component comprising a housing with two air vents on its side, positioned opposite each other. An air impeller is housed inside the housing, rotating within it. A generator is mounted on the surface of the housing, with its output shaft connected to the central shaft of the air impeller. In this utility model, high-speed air enters through one vent, driving the air impeller to rotate, and then exits through the other vent. The rotation of the air impeller drives the generator to generate electricity. A screw drives a baffle to move closer to or away from the housing, allowing adjustment according to the actual width requirements of the corridor. This enables installation to suit different corridor needs. The baffle has bolt holes, allowing for detachable mounting to a wall using expansion bolts.

The invention provides a wind-speed-sensor-free small wind driven generator off-grid system control method, device and equipment and a medium, and belongs to the field of generator off-grid system control. A wind driven generator blade mechanical energy capturing model is established by establishing a wind driven generator blade physical model and combining a wind field type, a fan physical model and a wind field installation angle. The optimal rotating speed curve corresponding to the maximum value of the mechanical energy captured by different types of wind driven generators at each wind speed can be fitted, and the accuracy of the rotating speed-power curve when the system applies different types of fans is improved. Simulation data and actual measurement data of motor hardware are subjected to bidirectional verification and fusion, so that the accuracy of the data and the precision of the whole system are improved. On the basis of an optimal rotating speed curve obtained through blade aerodynamic simulation, full-link parameter matching from blade mechanical energy capture to motor output is achieved in combination with a voltage-current curve of actual measurement and simulation.

The invention discloses a downwind type small wind driven generator turbine which comprises a rotor blade body axially swept back from a blade root to a blade tip, the front edge of the blade is provided with a bionic nodule structure changing in a sine rule, and the rear edge of the blade is provided with a sawtooth-shaped corrugated structure; the blades and the hub are connected to form a wind turbine rotor, the rotor is located on the downwind side of the tower, wind flow firstly passes through the tower and then acts on the rotor blades, the downwind layout enables the blades to be capable of natural feathering under the action of wind loads, therefore, dynamic load impact on the tower is reduced, and the yaw system structure is simplified. The tower shadow effect can be remarkably relieved through the whole sweepback type blades, and aerodynamic noise is reduced; the front edge nodules of the blades are bionic to fin limbs of the seat head whale, so that the lift-drag ratio can be effectively increased, broadband noise is reduced, and violent fluctuation of power and load is inhibited; sawtooth ripples on the rear edge of the blade imitate a comb-shaped structure on the rear edge of the flying feather of the owl, so that vortex shedding frequency concentration can be inhibited, and high-frequency noise can be remarkably reduced.

The invention discloses a small-sized wind driven generator with a passive blade pitch angle deflection mechanism. The small-sized wind driven generator comprises blades, a hub, a power generator, a torque generator and the pitch angle deflection mechanism, wherein the pitch angle deflection mechanism consists of a driving bevel gear, a passive bevel gear, a tension spring, a limiter, a torque generator rotating shaft and a related bearing; the blades are connected with the hub through bearings, the hub and a power generator rotating shaft fix a driving rotor, and the roots of the blades are connected with a driven bevel gear in the hub and receive torque which is transmitted by a driving bevel gear and generated by a torque generator rotating shaft concentric with the power generator rotating shaft. When the rotating speed of the impeller is lower than the rated rotating speed, the tension spring tensions the driving bevel gear to enable the blades to keep the initial pitch angle, and when the rotating speed of the impeller is higher than the rated rotating speed, the torque of the torque generator begins to overcome the resistance of the tension spring on the driving bevel gear, rotate the blades and increase the pitch angle, and at the moment, the rotating speed is reduced; and the steps are repeated, so that the rotating speed is kept balanced.

The invention provides a power supply system and a power supply method for a direct-current load and a typhoon-resistant backup power supply of a wind turbine generator. The power supply system provided by the embodiment of the invention can comprise a small fan set, a photovoltaic module and a wind-solar complementary controller, the wind-solar complementary controller comprises a power supply loop, and the small fan set and the photovoltaic module are electrically connected with the input end of the power supply loop of the wind-solar complementary controller. The power supply loop output end of the wind-solar complementary controller is electrically connected with the direct current side of the anti-typhoon back-up power supply and the direct current load of the wind-solar unit respectively; and the wind-solar complementary controller is used for integrating the output electric energy of the small fan set and the output electric energy of the photovoltaic module to supply power to the direct-current load of the wind turbine generator and charge the anti-typhoon backup power supply. According to the invention, the output electric energy of the small-sized fan set and the photovoltaic module can be used for charging the typhoon-resistant backup power supply of the wind turbine generator and supplying power to the direct-current load of the wind turbine generator.

A large wind turbine consists of a series of smaller wind turbines. The smaller wind turbines are positioned in a suitable configuration. The entire construction is hollow and may be any shape on which a series of smaller wind turbines may be placed. The exterior of the construction may be covered with threads to prevent birds or animals from entering. In this way, wind enters the cage and encounters a series of waiting wind turbines, by which the kinetic energy of the wind is converted into electrical energy, thereby causing the cage to become a wind turbine cage. From the perspective of environment, this is a very safe and clean solution.

This small wind power generator comprises: a shaft; a spiral blade formed in a spiral shape to generate a rotational force by wind and having a blade member having a curved edge and straight edges each having one end connected to an end of the curved edge; a vibration reduction unit extending along the curved edge to reduce vibration generated by rotation of the blade member and wind; a reinforcement unit extending along each straight edge to reduce the vibration of the spiral blade; a bracket rotatably supporting opposite ends of the shaft; and a generator supported by the bracket and coupled to the shaft to generate electricity by using the rotational force of the shaft.

A small turbine generator is connected to a wind turbine. The wind turbine spins freely due to a variable wind force on the wind turbine. The generator includes a spinning rotor that is responsive and spins proportional to spin of the wind turbine. A stator is connected to an actuator. The stator is selectively moved by the actuator nearer to or further from the rotor to vary the electrical power generated. Movement of the stator is controlled such that an electrical measure, such as voltage of the electrical power generated, does not exceed a threshold level.

The invention relates to the field of intelligent dynamic electric power optimization regulation and control, and particularly provides an electric bicycle charging pile setting method and device, and the method comprises the following steps: S1, installing a solar panel at the top of a charging pile, equipping a small wind driven generator, and connecting commercial power to supply power to the charging pile; s2, installing a current sensor, a voltage sensor and a temperature sensor in the charging pile; s3, automatically adjusting the charging power; s4, registering, logging in and recharging by the user; s5, a manager manages the platform and remotely monitors and manages the running state of the charging pile; s6, installing a leakage protector in the charging pile, and installing an overvoltage and overcurrent protection device; s7, installing a lightning protection device; s8, the charging pile is provided with various types of charging interfaces to meet the charging requirements of different users; and S9, interface automatic identification and adaptation are carried out, and a charging wire storage device is arranged on the charging pile. Compared with the prior art, the charging pile and the electric bicycle can be protected against damage, and the safety of the charging pile under the complex weather condition is greatly improved.

The application discloses a wind turbine design method for three wind wheels, comprising the following steps: building a wind turbine model test table in a wind tunnel test section and placing a grid at the entrance of the wind tunnel test section; setting output power collection parameters, opening the wind tunnel, collecting output power, and closing the wind tunnel; repeating the above experiment to collect power of the three wind wheel wind turbine; processing data to estimate the degree of electricity cost with the test data; estimating the cost and calculating the annual power generation of the single wind wheel wind turbine unit and the three wind wheel wind turbine unit, and comparing and evaluating the design effect of the designed three wind wheel wind turbine. The application optimizes the existing single wind wheel wind turbine, solves the problems of low power generation and large occupation area of small wind turbines by designing the three wind wheel wind turbine, solves the problems of transportation, installation and maintenance of large wind turbines, and has important engineering significance for the research on the aerodynamic characteristics of the wind turbine.

The utility model discloses a yaw slip ring assembly structure for a small wind turbine generator, which comprises a main frame and a sliding yaw system, and the main frame is connected with a tower of the wind turbine generator through the sliding yaw system; the sliding yaw system comprises a yaw communication slip ring, a yaw power supply slip ring, a yaw bracket, a slip ring mounting base, a slip ring mounting bracket, a yaw sliding bearing and a yaw main shaft; the yaw support is supported on the yaw main shaft through a yaw sliding bearing, and the main machine frame is rotationally connected with the yaw main shaft through the yaw support. The yaw communication slip ring is installed above the yaw power supply slip ring, the yaw power supply slip ring penetrates into the slip ring installation support and is connected with the yaw support through the slip ring installation base, the yaw power supply slip ring comprises herringbone electric brushes and a base body, and the multiple herringbone electric brushes are installed on the two sides of the base body respectively and matched with the base body. The installation problem of the yaw slip ring of the small direct drive unit is solved, and the structure is simple and reliable.

The invention discloses a variable-pitch mechanism of a small wind generating set, a control method and the wind generating set, the variable-pitch mechanism comprises a generator, a hub and blades rotationally connected to the hub, and a variable-pitch reduction gearbox device or a worm and gear reducer is arranged at the end, away from the hub, of the generator; the output end of the variable pitch reduction gearbox device or the output end of the worm and gear reducer is connected with a ball screw capable of driving the blades to rotate. The output end of the variable-pitch reduction gearbox device or the output end of the worm and gear speed reducer is connected with the ball screw driving the blades to rotate, the crank connecting rod is connected with the blades, the speed reduction effect is achieved, meanwhile, the final speed reduction motion is converted into linear motion of the screw, the synchronous disc is directly pulled to conduct variable-pitch adjustment, the structure is simple, and operation is convenient. In addition, the variable pitch reduction gearbox device or the worm and gear speed reducer can achieve transmission with a large reduction ratio.

This invention belongs to the field of wind turbine technology and provides a method and system for predicting the rotational speed of a small vertical-axis wind turbine. The method includes: acquiring an operating video of the small wind turbine; performing cropping and resolution reduction preprocessing on the operating video; decomposing and numbering the preprocessed operating video to obtain numbered static images; extracting feature colors from the static images; calculating the feature color area of ​​each static image and plotting a curve corresponding to the feature color area according to the static image number; obtaining the predicted rotational speed value of the small wind turbine based on the number of frames between adjacent peaks in the curve. Based on feature color recognition, this method achieves the goal of predicting the rotational speed of the small wind turbine, solving the problem of requiring specialized equipment and personnel for rotational speed detection, and replacing the traditional method of measuring and calibrating rotational speed by installing sensors.

The utility model relates to a household miniature generator, and particularly discloses a household miniature wind driven generator structure which comprises a vertical rod and a vertical motor. The axis of the vertical motor is vertically arranged, and a vertical rod is arranged along the axis of the vertical motor; the vertical motor comprises a first rotating barrel part and a second rotating barrel part; the first rotating barrel part is rotatably mounted on the vertical rod and is provided with first blades which are clockwise arranged; the second rotating barrel part can also be rotationally mounted on the vertical rod and is provided with anticlockwise second blades; the first rotating barrel part is provided with a first winding, and the second rotating barrel part is provided with a plurality of corresponding second permanent magnets. The beneficial effects of the utility model are that the power generation efficiency is improved by rotating the corresponding blades forwardly and reversely; and under the condition that the operation stability is ensured, the power generation efficiency can be improved through the size.

A large wind turbine consists of a series of smaller wind turbines. These smaller turbines are positioned on a suitable structure. The entire structure is hollow and can be any shape on which a series of smaller wind turbines can be mounted. It can be enclosed with wire mesh to prevent birds or other animals from entering. In this way, the wind enters a cage containing a series of wind turbines, which convert its kinetic energy into electrical energy, thus transforming the wind turbine cage itself. From an ecological perspective, this is a very safe and clean solution.

The utility model relates to a variable centrifugal fly rod assembly and a small wind turbine comprising the same, which comprise a centrifugal fly rod base, a centrifugal fly rod guide sleeve, a pre-tightening adjusting assembly, a linear bearing, a centrifugal fly rod guide rod with an end table at the inner end, a centrifugal fly rod spring and a fly rod counterweight sleeve sleeved at the outer end of the centrifugal fly rod guide rod, the centrifugal fly rod guide rod is sleeved with the centrifugal fly rod spring, the centrifugal fly rod spring is limited between the end table and the linear bearing and can be switched between an initial compression state and a re-compression state, and the centrifugal fly rod guide rod abuts against the pre-tightening adjusting assembly in the initial compression state; and after the rotating speed of the wind turbine impeller reaches a preset rotating speed, the centrifugal fly rod guide rod moves outwards to enable the centrifugal fly rod spring to enter a re-compressed state. The maximum rotating speed of the small wind turbine is reduced again, the service life of the generator, the main shaft brake and the like is prolonged, the small wind turbine can be compatible with a permanent magnet generator with higher voltage, the wind energy conversion efficiency of the whole machine is improved, the using amount of red copper and rare earth permanent magnets is reduced, and the production cost of the whole machine is reasonably reduced.

Carport (1) for several multi-track motor vehicles, in particular trucks, comprising a wooden structure (2) with a closed, sealed roof (3), wherein photovoltaic modules (4) are arranged on the roof (3), the carport (1) preferably comprising at least one small wind turbine (5), the carport (1) further comprising a battery storage system (6) with one or more accumulators which can be charged by means of the photovoltaic modules (4), and preferably by means of the at least one small wind turbine (5), wherein the carport (1) comprises at least one charging station (10) for at least one electric vehicle, wherein the at least one charging station (10) is electrically connected to the battery storage system (6) in order to be able to provide electrical energy from the battery storage system (6) for the operation of the at least one charging station (10).

The application discloses an optimal design method for cutting a PVC pipe to manufacture a horizontal-axis wind turbine blade, and comprises the following steps: establishing a parameterized equation of an airfoil; determining the relationship between the maximum chord length of the airfoil and the central angle of the PVC pipe; establishing control variables of the optimal design; establishing an objective function of the optimal design, and obtaining an optimal solution through an iterative algorithm; and determining the optimal wind turbine blade through optimization. The optimal design method provided by the application can better adapt to the geometric characteristics of the PVC pipe, simplify a processing procedure, effectively reduce the operation and maintenance cost of a small wind turbine, significantly improve the economic benefit of the small wind turbine, and increase the market competitiveness of the small wind turbine.

The utility model relates to the technical field of wind power generation equipment, and discloses a novel low-cost small wind power generation blade which comprises a core framework, upper frameworks which are evenly distributed are fixedly connected to the top of an outer ring of the core framework, and lower frameworks which are evenly distributed are fixedly connected to the bottom of the outer ring of the core framework. A supporting frame is fixedly connected between the core framework and the lower framework, canvas bags are arranged on the surfaces of the upper framework and the lower framework, rivet holes which are evenly distributed are formed in one side of the outer wall of each canvas bag, and nylon ropes are connected to the inner walls of the rivet holes in a sliding mode. According to the wind power generation blade, the upper framework, the supporting frame and the lower framework are combined together to form the supporting framework, the canvas bag is sleeved on the surface of the supporting framework, the canvas bag is combined with the supporting framework through the rivet holes by using the nylon rope, the fan blade bag can be disassembled by unfastening the nylon rope during disassembly, the wind power generation blade is simple and convenient to install and disassemble, and the maintenance cost of the wind power generation blade is reduced.

The present invention discloses a small wind turbine generator, which relates to the field of wind turbine generators. The small wind turbine generator comprises a conversion mechanism, wherein the conversion mechanism comprises a nacelle, a sealing disk is provided on the top of the nacelle, a secondary shaft is fixedly mounted in the center of the top of the sealing disk, the conversion mechanism is used to convert mechanical energy into electrical energy, an adjustment mechanism is provided on the top of the secondary shaft, and three energy supply mechanisms are provided on the outer ring of the adjustment mechanism, the energy supply mechanism comprises a mounting assembly and a buffer assembly, the mounting assembly comprises a hard blade frame, blades are provided inside the hard blade frame, the hard blade frame and the blades are both inclined, and a blade shaft is fixedly mounted in the center of the front and rear ends of the blades. The present invention can reduce the windward surface of the blades and the hard blade frame, reduce the wind pressure on the blades and the hard blade frame, reduce the output power, release excess wind pressure, and thus protect the small wind turbine generator from damage.