254results about "Renewable energy generation" 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 utility model discloses a vertical shaft light-weight blade universal breeze power generation device which comprises a tower drum, a stand column, a net rack, blades, a generator set, a mounting base and a bearing mechanism. The net frame is arranged on the stand column, the blades are fixed to the net frame, the tower barrel is hollow, a step ladder for climbing is arranged in the tower barrel, the generator set is fixedly arranged in the tower barrel through the mounting frame, the bottom end of the stand column is connected with the mounting base, the mounting base is arranged on the bearing mechanism and rotationally connected with the bearing mechanism, and the bearing mechanism is arranged at the top end of the tower barrel. One end of the mounting seat is connected with a generator set; blades are blown by breeze to drive the net rack, the stand column and the mounting base to rotate, and then the generator set is driven to rotate for power generation. According to the utility model, the blades are vertically and densely arranged, so that the wind direction limitation is avoided, and acting force can be generated in various wind directions to drive a generator set to operate and generate electricity.

The present invention relates to a method for determining the value of electric energy in consideration of a power generation source in an EV ecosystem and a device for performing same. The method for determining the value of electric energy in consideration of a power generation source in an EV ecosystem may comprise: a step in which an EV ecosystem management device determines the incentive of an EV power plant on the basis of a power generation source of the EV power plant; and a step in which the EV ecosystem management device determines the carbon emission right to be allocated to the EV power plant on the basis of the power generation source of the EV power plant.

A vertical-axis turbine extending longitudinally along an axis of rotation is disclosed, wherein the turbine has first and second blades disposed around the axis of rotation, the first and second blades having proximal portions and distal portions located relatively close to and away from the axis of rotation respectively, and body portions located between the proximal portions and the distal portions. The turbine also has a rotor assembly coupled to an end of the first and second blades. The proximal portion of the first blade contacts the body portion of the second blade and the proximal portion of the second blade contacts the body portion of the first blade to form a closed volumetric region around the axis of rotation. The shape of the first and second blades may be defined by twisting a sheet of flexible material according to a frame comprising two or more pairs of battens.

The invention provides a dual-mode self-adaptive vertical axis fan and a control method thereof. In the structure, the fan comprises a fan tower drum which is vertically arranged, at least two fan blades, corresponding fan supporting rods, an upper-layer controller, a lower-side blade connector and the like. The advantages of a Darrieus lift type fan and a Savonius resistance type fan are fused, a fan supporting rod is used for forming a resistance difference during initial starting, rotational inertia is reduced, and ultralow-wind-speed self-starting is achieved; in the working state, the upper-layer controller and the lower-side blade connector cooperate to adjust the attack angle of the blades, and the power generation efficiency is improved. In addition, the adaptability and efficiency of the fan are enhanced through the design of ball knot connection, cable fixing devices and the like. The control method comprises the steps of initial starting, working state switching and storage state switching, it is ensured that the fan keeps the optimal performance in various environments through intelligent control, the operation and maintenance process is simplified, the operation and maintenance cost is reduced, and the wind energy utilization rate is increased.

The wind power generation device (1) includes: a support shaft (10); a rotating body (20) formed of a dielectric material and supported on the support shaft in such a way that it can rotate about the central axis of the support shaft; a plurality of electrodes (30) arranged at intervals along the circumference of the central axis on the surface of the rotating body; a power source (50) applying a predetermined voltage to each of the plurality of electrodes at predetermined time intervals; and a generator (60) connected to the rotating body.

The application provides a vertical windmill with a wind-aiming device, and belongs to the field of wind power generation. The vertical windmill with the wind-aiming device comprises a main shaft, a blade assembly, a sleeve, a wind-aiming device and a bearing assembly. The blade assembly is connected with the main shaft; the wind-aiming device is connected with the sleeve, and the wind-aiming device is configured to drive the sleeve to rotate synchronously; the bearing assembly is arranged between the inner wall of the sleeve and the outer wall of the main shaft. The vertical windmill has a wind-aiming state and a power generation state. The bearing assembly is configured to meet the following conditions: when the vertical windmill is in the power generation state, the main shaft rotates and the sleeve does not rotate; when the vertical windmill is in the wind-aiming state, the sleeve rotates and the main shaft does not rotate. Through the vertical windmill, the mutual interference of the vertical windmill in the wind-aiming and power generation processes can be effectively avoided, so as to ensure the wind-aiming and power generation efficiency.

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.

Conventional saponius-type wind turbines are large because the generator is connected to the lower part of the turbine's rotating shaft; the goal is to make them more compact. Furthermore, it prevents rainwater, snow, or fallen leaves from accumulating in various parts of the wind turbine. A small, lightweight wind turbine and wind power generation device that can generate stable torque and electromotive force even when wind direction and speed change rapidly, and can utilize wind from all directions, including horizontal, vertical, and oblique directions, to generate rotational torque. [Solution] A vertical-axis wind turbine comprising a bucket having a roughly hemispherical paddle section at the top and a semi-cylindrical bucket section at the body, arranged horizontally offset along the plane of a cylinder cut in half vertically, such that wind flowing into the concave side of one bucket flows into the concave side of the other bucket, and a wind power generation device equipped with a generator inside the bucket.

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 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.

To provide a drag-type wind turbine with reduced costs. [Solution] The drag-type wind turbine comprises a power generation unit having blades, a first plate connected to the upper end of the blades, a second plate connected to the lower end of the blades, a generator, and a first shaft connected to the generator; a connecting member fixed to one of the first plate and the second plate and having a first hole into which the first shaft of the power generation unit is fitted; a second shaft arranged along the central axis of the drag-type wind turbine; and a holding member for holding the second shaft. Each of the first plate and the second plate has a main body that rotates with respect to the central axis of the drag-type wind turbine and a through hole positioned to coincide with the central axis. The second shaft is inserted through the respective through holes of the first plate and the second plate while being held by the holding member. As the first plate and the second plate rotate, the first shaft of the power generation unit rotates, while the second shaft 50 held by the holding member does not rotate.

The present invention relates to a wind power plant comprising at least one wind turbine (1) having a vertical rotational axis and a support column (4) having a support assembly. The wind turbine (1) comprises a horizontally mounted rotor with blades (11, 11 ') arranged from above on the support column (4) and at least one power generator (16). The support assembly comprises a base (6) for housing at least one wind turbine (1) comprising three vertically arranged blade modules (2) arranged one above the other. Each blade module (2) comprises three vertically arranged blades (11, 11 '), each of which is mounted on its own alignment shaft (12), wherein the three alignment shafts (12) are arranged vertically parallel to each other. The blades (11, 11 ') of the blade module (2) are arranged symmetrically in one horizontal plane so that together they form substantially a propeller without a direct common centre fit. Each individual alignment shaft (12) is common to a trio of superimposed blades (11, 11 '), one from each blade module (2) belonging to a single wind turbine assembly (1). The wind turbine (1) is arranged in a cage (5), which is part of the support assembly, to protect the wind turbine from birds and larger flying objects.

An electric energy distribution method and an electric energy distribution system are provided that maintain the power supply stability or power supply reliability of a power grid during a contracted time period. [Solution] The electric energy distribution method includes receiving a contracted power supply amount and a contracted time period of a power distribution contract for an area, controlling a plurality of energy storage devices in the area based on the contracted power supply amount during the contracted time period to provide a plurality of stored electric energies to the power grid, and utilizing the plurality of stored electric energies to stabilize the power supply of the power grid.

A horizontal axis rotational force generator is introduced, utilizing fluid flow to drive motion. The system includes one or more rotating mechanisms, each with multiple blades positioned at equal phase angle intervals. These blades revolve around a horizontal shaft while simultaneously rotating around parallel sub-shafts when exposed to fluid pressure, producing torque on the main shaft. A support structure holds the shaft and allows stable axial rotation at designated heights. A gear interlocking unit adjusts angular velocities, shifting blade revolution speeds to half their value in the opposite direction, and transfers the result to the main shaft. As blades pass vertically above the shaft, their orientation is controlled so that surfaces align horizontally or vertically relative to the shaft. This ensures blades consistently generate maximum rotational force on the horizontal plane, efficiently converting fluid flow into usable mechanical energy.

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

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.

The invention described herein pertains to a housing for a vertical-axis wind turbine, a vertical-axis wind turbine, and an apparatus comprising a housing and a vertical-axis wind turbine. For example, the disclosure below provides more efficient electricity generation from a vertical-axis wind turbine assembly. Increases in efficiency may be achieved by the housing through novel angled louvres and integrally housed electrical stators. Increases in efficiency may also be achieved through a magnetic spindle bearing and Savonius blade geometry. The turbine may be sized and configured for attachment to existing structures.

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 provides a novel wind turbine structure that can rotate regardless of wind direction. [Solution] The device has a vertical rotating shaft 4 and a blade support 11 mounted on the vertical rotating shaft 4, which supports multiple identical blades 12 and 13 at multiple equally spaced locations in the circumferential direction in a cantilevered manner so as to be rotatable around the vertical axis. Each blade 12 and 13 is plate-shaped along a vertical plane, with one end edge extending vertically supported by the blade support 11 and the other end edge extending vertically acting as a rotating edge that can rotate in the horizontal plane. The blade support 11 is provided with a limiting means for each blade 12 and 13 to limit the range of rotation of the blade.

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.

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.

A wind turbine with blades composed of funnel-shaped components. These blades, which rotate around a vertical axis, are designed to optimize the utilization of kinetic wind energy. Furthermore, they enable an optimized turbine design, positively impacting the financial aspects of development and installation. From an ecological perspective, such a wind turbine aligns with efforts to generate electricity in a clean and safe manner, benefiting both humans and the ecosystem, including birds and other wildlife.

The present invention relates to a method for determining the value of electric energy in consideration of a power generation source in an EV ecosystem and a device for performing same. The method for determining the value of electric energy in consideration of a power generation source in an EV ecosystem may comprise: a step in which an EV ecosystem management device determines the incentive of an EV power plant on the basis of a power generation source of the EV power plant; and a step in which the EV ecosystem management device determines the carbon emission right to be allocated to the EV power plant on the basis of the power generation source of the EV power plant.

The invention concerns a power plant with vertical axis wind turbines. Said vertical axis wind turbines (10) (VAWT) comprise a rotor (15) with rotating blades (16), mounted on a main shaft (14), said main shaft (14) defining a lower end (14a) and an upper end, the lower end (14a) of the main shaft (14) being attached to a base structure (17), said base structure (17) being anchored through a foundation (12'). According to the invention, the power plant (100) further comprises a civil engineering work (20) and a mechanical attachment (18) between the upper end (14b) of the main shaft (14) and a portion of the civil engineering work.