133 results about "Wind energy conversion" patented technology

The invention belongs to the technical field of comprehensive utilization of ocean renewable energy sources, and particularly relates to a pilot frequency coupling-based wind wave energy multi-degree-of-freedom broadband control method, which comprises the following steps of: performing frequency domain identification on wind wave environment characteristics, and constructing a wind wave pilot frequency energy coupling model; based on the motion response characteristics of the multi-degree-of-freedom floating platform, designing a pilot frequency energy regulation and conversion mechanism; a full-working-condition dynamic optimization control strategy is adopted, and cooperative operation and energy flow self-adaptive distribution of the wind energy conversion unit and the wave energy conversion unit are achieved. Aiming at the significant difference and relevance of wind energy and wave energy in frequency characteristics, time scale and spatial distribution, a pilot frequency wind wave coupling dynamic model is established, and broadband capture of low-frequency wind-induced and high-frequency wave-induced coupling energy is realized under complex sea conditions through multi-degree-of-freedom motion decoupling and state observation, so that the wind-induced and high-frequency wave-induced coupling energy is obtained. The energy utilization rate, the attitude stability and the structural safety of the system are effectively improved, and good robustness and engineering adaptability are achieved.

The invention belongs to the technical field of wind power generation, and particularly discloses a wind energy directional rectifier which comprises a body and at least one airflow channel, the body is provided with at least one airflow channel in the extending direction of the central axis, and the body and the airflow channels are each of a streamline gradual change structure and have the same gradual change direction. Comprising a device for converting the wind energy rectified by the wind energy directional rectifier into mechanical kinetic energy to drive a generator to generate electricity. Wind energy in different directions is collected through the wind energy directional rectifier and then converged together to become high-speed jet flow consistent in direction and stable in flow speed, then the high-speed jet flow is converted into mechanical kinetic energy through the power conversion structure, finally the generator is driven to generate electricity, the wind energy utilization efficiency of the wind power conversion device is effectively improved, and the wind energy utilization efficiency is improved. The power generation efficiency of the wind-power conversion device is improved.

The invention discloses a wind turbine blade aerodynamic characteristic optimization and power generation efficiency improvement system, and relates to the technical field of wind turbine operation optimization. A wind speed analysis module establishes wind energy distribution models of different wind speed grades according to historical wind regime data and real-time wind speed changes, analyzes whether wind speed sudden change exists or not based on the wind energy distribution models, and sends the analyzed wind speed sudden change to a power generation module; the load analysis module introduces a power grid end load demand to form a load change model, whether load fluctuation exists or not is analyzed based on the load change model, and the collaborative optimization module takes wind speed abrupt change and the load fluctuation as input variables and collaboratively optimizes a real-time adjustment strategy of a paddle through an adaptive control algorithm. According to the lifting system, a wind speed and load double sensing mechanism is constructed, an intelligent optimization algorithm and a pneumatic real-time monitoring network are introduced, the self-adaptive capacity of a fan in a variable environment is remarkably improved, the real-time performance and the fineness of paddle control are enhanced, and the control efficiency is improved. And the wind energy conversion efficiency, the power generation output stability, the structural safety and the operation intelligence level are obviously improved.

The invention discloses a circuit board optimization method applied to wind energy conversion, and the method comprises the steps: integrating a dynamic load matching module on a circuit board, collecting the voltage, current and frequency signals outputted by a wind turbine generator in real time, calculating the current wind energy conversion efficiency through an embedded controller, and combining with a preset maximum power point tracking algorithm, dynamically adjusting the switching frequency of the power semiconductor device; a layered heat dissipation structure is adopted, a circuit board base material is made of a high-thermal-conductivity composite ceramic material, a micro-channel cooling system is embedded in the circuit board base material, and the circuit board base material is connected with external heat dissipation fins through heat pipes; a thermoelectric refrigeration sheet is arranged below the power device, and the refrigeration power is dynamically adjusted according to the feedback of a temperature sensor, so that the temperature of a key device is maintained in a safe range of 50-80 DEG C; through a multi-objective optimization algorithm, the circuit loss, the heat dissipation efficiency and the electromagnetic compatibility are balanced, the circuit layout and the wiring path are optimized, and the influence of parasitic inductance and capacitance on the high-frequency switch is reduced.

The invention relates to the technical field of wind power prediction, and discloses a wind power prediction system fusing a physical model and machine learning, which comprises a multi-dimensional acquisition module and an intelligent prediction module. According to the wind power prediction system fusing the physical model and the machine learning, forecast data, sensing data and fan management data of all meteorological factors are acquired through a multi-dimensional acquisition module and are classified to form a data set, an intelligent prediction module analyzes a linear feature relationship among the meteorological factors, predicted atmospheric pressure, predicted air density and predicted power are generated, and the wind power prediction efficiency is improved. The intelligent prediction module establishes constraint conditions for a subsequent prediction model, monitors a nonlinear characteristic relation between a meteorological factor prediction value and a real-time numerical value, generates a monitoring data set and a random forest model, dynamically corrects model parameters, and is high in wind energy prediction accuracy according to the monitoring data set. The influence of each meteorological factor on the wind energy conversion efficiency is analyzed, a corresponding evaluation report is output, and the dynamic monitoring optimization capability is high.

The application discloses a constant power control method and device of a wind energy conversion system based on non-Gaussian data and a medium, establishes a performance index based on second-order information potential, and obtains optimal control input by optimizing the established performance index through a Newton method, so that the output speed and output power of the wind energy conversion system under non-Gaussian wind speed interference can track the set value, constant power control of the wind energy conversion system is realized, the fluctuation of the output power is reduced, and the service life of the wind turbine is prolonged. The application performs controller design under the condition that the interference is a non-Gaussian random variable, compared with the existing method in which noise is ignored or noise is assumed to be subject to Gaussian distribution, the application is more general and practical. Moreover, the application considers the mutual relationship between two closed loop circuits in a multivariable system, adds joint information potential in the performance index, allows variable speed during a transient period, and can obtain higher control performance.

The invention relates to the field of electric power, in particular to a wind power generation system. Comprising a rotating base and a wind power driving component installed on the rotating base, a middle base is connected to the rotating base in a matched mode, two fixing pieces are symmetrically and rotationally connected to the middle base, motors I are fixedly connected to the two ends of the middle base, rotating shafts are connected to output shafts of the two motors I through couplings, and the two rotating shafts are fixedly connected with the two fixing pieces respectively. The rotating seat is rotationally connected to the middle seat, a gear ring is fixedly connected to the rotating seat, a gear is fixedly connected to the middle seat, a motor III is fixedly connected to an output shaft of the gear, and the motor III is in meshing transmission connection with the gear ring. The wind power generation device has the beneficial effects that windward stress can be carried out at different height positions to realize conversion and utilization of wind energy.

The application relates to the field of ship energy centralized management technology, in particular to a comprehensive ship electric energy management system based on the Internet of Things, which comprises a front-end power generation module, an electric power algorithm module, a control management module, a front-end monitoring module and a man-machine interaction module; the front-end power generation module converts wind energy into electric energy, converts heat energy generated by diesel engine work into electric energy and converts mechanical energy output by the diesel engine into electric energy; the front-end power generation module is connected to a power grid and delivers electric power to the power grid; the electric power algorithm module monitors electric power output of a wind flow power generation unit, a low-temperature waste heat unit and a shaft power generation unit, collects and analyzes stored electric energy of the front-end power generation module; the front-end monitoring module is used for monitoring electric power generation; and the control management module adjusts electric power flowing into the power grid according to fitting and analysis results. The application has the effect of reducing additional energy consumption of the ship and maintaining overall electric energy efficiency of the ship in an optimal range.

The present invention discloses a composite energy recovery system for an industrial cooling tower, comprising a support plate, a wind power generation device, a solar power generation device, and a water collection device, wherein the support plate can be fixedly arranged at the tower mouth of the industrial cooling tower; the wind power generation device is used to convert wind energy into electrical energy, and includes a variable configuration power generation mechanism that can switch between a swing power generation mode and a rotation power generation mode; the solar power generation device is used to convert received light energy into electrical energy; and the water collection device is used to collect water vapor in the industrial cooling tower. The present invention is installed at the tower mouth, integrating wind power, photovoltaic power, and water utilization, and can recover the kinetic energy of the fluid in the tower, the solar energy at the tower mouth, and water vapor. In addition, the innovative variable configuration power generation mechanism is used to realize the interactive and coordinated operation of swing and rotation power generation, so that the device uses a swing power generation mode under low wind speed or turbulent conditions and a rotation power generation mode under medium wind speed conditions, so that the power generation system stably converts and outputs electrical energy.

The invention provides a wind power deviation correction method, and relates to the field of wind power deviation correction, and the method comprises the following steps: obtaining five-element microclimate operation data of a wind power plant, and constructing a five-element feature vector; a microclimate state vector is generated through a microclimate state encoder, and the fusion weight of the LSTM and the Self-Attention is dynamically calculated; respectively processing short-term, medium-term and long-term time sequence dependency relationships, and generating a global dependency feature vector; embedding a wind energy conversion physical law into a loss function, and constructing a physical constraint reinforcement learning framework; dynamically adjusting the weight of each microclimate factor to generate a weighted feature vector; and generating a final wind power deviation correction result through the decoder network. According to the method, through microclimate adaptive model fusion, multi-scale time sequence modeling, physical constraint enhancement and dynamic feature optimization, the accuracy of wind power deviation correction and the adaptability to different meteorological conditions are improved.

The invention provides a wind generating set control system and method, and the method comprises the steps: deducing short-term wind power information of a power generation environment and short-term power generation of a generator according to real-time information, determining the power demand of the generator according to the total power demand of a power grid, and adjusting the response speed of the generator to the short-term wind power information, the current wind energy conversion efficiency of the generator is determined according to the real-time rotating speed of the generator, the generated electric energy is synchronously transmitted to the power grid, the temporary electricity demand of the power grid is determined according to the transmission feedback information of the power grid, and the rotating speed of the generator is subjected to auxiliary adjustment, so that the wind power condition in a short period can be predicted; therefore, the generator is controlled to adjust the rotating speed in advance, voltage instability caused by wind speed fluctuation is avoided, power generation work of the generator is adjusted according to the electricity demand of the power grid, and the phenomenon of overload or low-efficiency operation is avoided.

The natural energy power generation assembly of Pan is in the field of new energy, which is composed of solar photovoltaic panel, centrifugal fan component, wind control component, wind receiving component and generator, the main idea is to obtain 1100W / hour of electric energy through solar panel, and convert 200W / hour to 400W / hour of electric energy into negative pressure energy acting on the wind control component through the centrifugal fan, and convert the negative pressure energy into wind energy with wind speed of 11m / s to 45 / s through the cooperation of "fire tornado" effect device and "Laval tube" in the wind control component, and convert the wind energy into kinetic energy of 300rpm to 500rpm through the wind receiving component to drive the generator to generate 1000W / hour to 2000W / hour of electric energy.

The present application relates to high-altitude wind energy field, disclose a kind of hoist type umbrella type wind energy conversion method and power generation system.The first cable of the method is tied to the edge of the umbrella of working umbrella;Second cable is tied to the top of the umbrella of working umbrella.Power generation stage, high-altitude wind energy drives working umbrella to rise, first cable and second cable respectively pull first drum and second drum to rotate, and first drum or second drum drives generator to generate electricity;Close umbrella stage, working umbrella rises to first height, first cable stops rope than second cable, umbrella edge continues to rise and folds up to close;Recycling stage, motor drives first drum and second drum to rotate simultaneously, and first cable and second cable pull working umbrella to descend;Open umbrella stage, working umbrella descends to second height, first cable stops rope than second cable, umbrella edge continues to descend and folds down to open.The present application is used to solve the opening and closing problem of umbrella type wind energy conversion device, and achieves the effect of simple, efficient and reliable.

The invention discloses a novel offshore wind power generation system control method based on a disturbance observer, and relates to the technical field of permanent magnet synchronous wind power generator control. The method comprises the following steps: constructing a mathematical model of a wind turbine, and designing a maximum power tracking module; constructing a mathematical model of the permanent magnet synchronous generator; designing a disturbance torque observer, and introducing a low-pass filter to improve the observation precision; designing a sliding mode controller based on a double-exponential reaching law; and combining the output values of the sliding mode controller and the disturbance torque observer as a q-axis current instruction to control the rotating speed of the permanent magnet synchronous generator. According to the method, the maximum power point of the wind turbine is captured, the air disturbance torque is estimated and compensated, accurate and rapid tracking of the rotating speed of the rotor matched with the maximum power point of the wind turbine is achieved through the novel double-exponential sliding mode controller, and the wind energy conversion efficiency is improved. And the anti-interference capability of the wind power generation system is enhanced in a complex marine environment.

The utility model relates to wind driven generator technical field discloses a wind driven generator, its characterized in that, including fan main shaft, first blade layer, first blade layer includes a plurality of first blade, first blade is along the circumferential interval distribution of fan main shaft, second blade layer, second blade layer includes a plurality of second blade, second blade is along the circumferential interval distribution of fan main shaft, and second blade layer is set in the circumferential of fan main shaft relative to first blade layer staggered angle, the wind driven generator provided by the utility model, through setting first blade layer and second blade layer, and second blade layer is in the circumferential of fan main shaft relative to first blade layer staggered angle, can reduce the wind catching empty window period of fan rotation, improve the utilization of effective wind sweeping area, strengthen the overall wind catching capacity, simultaneously, the difference of angle of attack change that two layers of blades experience in the rotation process, can alleviate dynamic stall phenomenon, help to promote the wind energy conversion efficiency.

The utility model discloses a kind of reinforced axial flow fan blades, it is related to axial flow fan blade field, including mounting hub, the inner side of mounting hub is uniformly fixedly connected with installation component, another end of installation component is fixedly connected with mounting seat, the other side of mounting seat is uniformly fixedly connected with blade body, installation component includes the clamping frame being set in mounting hub inner side, the clamping frame penetrates mounting hub, the upper and lower sides of clamping frame are uniformly set with clamping hole, one side of mounting seat is fixedly connected with clamping block, clamping block and clamping frame are mutually inserted. The utility model uses above-mentioned structure, installation component is set in the inside of mounting hub, can reduce the eddy current and turbulence due to component obstruction, axial flow fan blade can more smoothly guide airflow, reduce energy loss, and then significantly improve wind energy conversion efficiency, ensure that axial flow fan blade always maintains efficient operating state during working process.

The environment-friendly wind energy magnetic resonance heating system comprises a support which is movably installed on a base, and a rotating rod is arranged in the support in a penetrating mode in the vertical direction; the fan blades are movably mounted on the outer side of the rotating rod above the bracket and are circumferentially distributed; the adjusting plate is movably mounted on the fan blades and used for adjusting the air volume of the fan blades and the rotating speed of the rotating rod; the magnetic heater is arranged at the bottom in the bracket and is movably connected with the bottom of the rotating rod through a driving rod; the motor is mounted in the bracket and is connected with the rotating rod; and the storage battery is mounted in the bracket and is used for storing electric quantity. According to the heating system, wind energy in natural resources can be converted into heat energy and electric energy to be transmitted outwards for use, traditional boiler heating can be replaced, and therefore environmental pollution caused by boiler heating is effectively avoided, the heating system can be conveniently disassembled and installed, small-scale use is facilitated, a user can conveniently install the heating system, and the heating system is convenient to use. The rotating speed of the fan blades can be conveniently adjusted according to external wind speed.

The invention relates to the technical field of power supply of wind power detection equipment, in particular to a multi-mode power supply device for wind power blade detection equipment. And the power supply assembly comprises a wind power storage bin, and the wind power storage bin is fixedly connected to the top of the device bottom plate. According to the multi-mode power supply device of the wind power blade detection equipment and the use method, by installing the power supply assembly, the wind power storage bin can serve as a core energy storage module to be fixed to the top of the bottom plate of the device and is specially used for bearing and storing wind energy input by external wind power generation equipment through a wind power charging hole and converting the wind energy into electric energy; basic power supply support is provided for the wind power blade detection equipment, electric energy converted by the solar panel is accurately conveyed to the wind power storage bin or the standby storage bin through the power storage wire for classified storage, and a multi-mode power supply guarantee system with dual-energy complementation, efficient collection and stable storage is constructed for the wind power blade detection equipment; and thus, the continuous power utilization requirements of the equipment in different environments are met.

The invention relates to the technical field of wind driven generators, and discloses a rigid inverted cone vortex-induced swing vibration type wind driven generator which comprises a shell, a wire, a permanent magnet, a spherical hinge, a base, a return mechanism and a lubricating mechanism. The wire is installed on the inner wall of the shell, the shell is fixedly connected with a ball seat of the spherical hinge, and the permanent magnet is fixedly connected with a ball head of the spherical hinge; the base is fixedly connected with a ball head of the spherical hinge, the return mechanism is arranged on the inner wall of the base, and the lubricating mechanism is arranged in the spherical hinge. An independent motor is not needed, the structure is more compact, any transmission mechanism is not needed, energy loss is reduced, the wind energy conversion rate is increased, and wind energy capture at any angle can be achieved.

A method is presented for determining a setpoint signal of a wind energy conversion system. The method includes: providing a first input signal, comprising system frequency values of an electric power system, and a second input signal comprising an angular speed value of a wind energy conversion system; determining, from the first input signal, an intermediate signal comprising system frequency deviation values, the system frequency deviation values indicating deviations between the system frequency values and a target frequency value; determining, from the intermediate signal and the first input signal, a power correction signal comprising a first power value; determining, from the second input signal, a first reference signal comprising a second power value corresponding to a point of maximum power extraction of the wind energy conversion system; and determining a setpoint signal for setting an output power value of the wind energy conversion system.

The invention relates to a wind energy utilization technology in the field of new energy, in particular to a wind energy wind turbine with high energy conversion, and mainly solves the problem that an existing fan is low in wind energy conversion efficiency. A wind energy wind turbine comprises a wind guide assembly, a fan blade assembly and a structural member, the fan blade assembly is composed of fan blades and fan blade connecting pieces, the wind guide assembly is composed of a wind guide plate and a wind guide body, and the wind guide plate and the wind guide body are fixedly connected together through a top cover or a base. The wind turbine is characterized in that an air flow channel for guiding air flow to flow is formed between the air guide plate and the air guide body, the air flow channel is conical, the sectional area of the air flow channel is gradually reduced from air inlet to air outlet, the air guide plate intercepts and collects incoming air and guides the incoming air into the air flow channel in the wind turbine, and the incoming air flows in the axial direction of the air guide body and is accelerated. And the air flows out of the air outlet of the air flow channel to blow the fan blades at the air outlet to rotate.

The present application relates to a ram air turbine emergency power drive device, comprising: a first set of turbine blades and a second set of turbine blades coaxially arranged in an axial direction, wherein the second set of turbine blades can be rotated relative to the first set of turbine blades around the axial direction from a first position to a second position and kept in the second position, wherein in the first position, the first set of turbine blades is superposed with the second set of turbine blades, and in the second position, the first set of turbine blades is at a predetermined non-zero angle with the second set of turbine blades. In this way, the number of blades is increased without affecting the space in the ram air turbine cabin, so that the turbine starting speed is faster, and the RAT access to the power grid time is reduced. In addition, increasing the number of blades can also improve the efficiency of the turbine in converting wind energy, thereby improving the efficiency of the emergency power generation. The present application also relates to an aircraft comprising the ram air turbine emergency power drive device.

The utility model provides a vertical shaft power generation assembly and power generation equipment with the vertical shaft power generation assembly, and relates to the technical field of power generation equipment.The vertical shaft power generation assembly mainly comprises a rotating structure, a rotating shaft and an induction coil, integrated design is achieved through a plurality of air guide grooves formed in a fan blade barrel, and a rotating body capable of rotating by means of wind power is formed; the rotating shaft transmits power to the first magnetic piece, and the first magnetic piece is matched with the induction coil to convert wind energy into electric energy. The wind guide grooves achieve utilization of wind power and are formed in a machining mode instead of assembling, so that the fan blade barrel forms an integral structure, the conditions that parts are increased and assembling is difficult due to assembling are avoided, the integral structure is compact, the mass is relatively light, and collection and transmission of the wind power are better facilitated. The vertical shaft power generation assembly effectively solves the problems that a vertical shaft power generation assembly in the prior art is complex in structure, large in mass and not beneficial to power generation due to the fact that the split type fin design is adopted.

The application discloses a typhoon intensity self-adaptive correction method for offshore wind power, relates to the technical field of offshore wind power prediction and typhoon early warning, and the method firstly fuses marine monitoring data and a typhoon prediction initial field, recursively updates a typhoon center position and a maximum wind speed; then a mapping relationship between a typhoon wind field and a geographical position of a wind power plant is constructed, fine wind speeds of each machine position are obtained, and wind power generators are divided into three types of operating states, i.e., low constant speed, maximum power tracking and high constant speed, according to the wind speeds; aggregated parameters are dynamically adjusted according to different operating states, a wind energy conversion efficiency coefficient is corrected on line, and collaborative optimization is formed; when electrical parameters are detected to be abnormal, the method is switched to a correction parameter in a fault ride-through state; and the application realizes closed-loop feedback of typhoon intensity prediction and wind power prediction, and significantly improves the offshore wind power prediction accuracy and the power grid operation safety during the influence of a typhoon.

The application relates to the technical field of wind power generation equipment, in particular to a fan blade and a wind driven generator. The fan blade of the application adopts a symmetrical airfoil design and has obvious aerodynamic performance advantages. The symmetrical airfoil makes the fan blade maintain relatively uniform airflow distribution in the rotating process regardless of the angle, thereby reducing turbulence and resistance and improving wind energy conversion efficiency. In addition, the head and tail design of the symmetrical airfoil makes the fan blade more balanced under stress, enhances the structural stability and service life of the fan blade. Through real-time optimization of the airfoil by a curve equation, the current environmental wind power conditions can be further matched, so that the fan can maintain the best operating state under different wind speeds.

The present invention discloses a wind and wave energy combined power generation device and a control method, comprising a wind turbine generator set, a semi-submersible floating platform and a wave energy device; the semi-submersible floating platform comprises a Y-shaped base body and three connecting plates; the three end points of the upper part of the Y-shaped base body are connected by the three connecting plates; the wave energy device is mounted on the connecting plates via an upper hinge sleeve, and the wave energy device is used to convert wave energy into electrical energy; the wind turbine generator set is mounted at the center point of the Y-shaped base body, and the wind turbine generator set is used to convert wind energy into electrical energy; the present invention solves the technical problem that the wave energy power generation devices in the existing semi-submersible wind and wave combined power generation devices are all tightly connected to the floating platform, and the angle between the wave energy power generation device and the incoming wave direction cannot be flexibly adjusted, resulting in the wave energy power generation device being difficult to achieve long-term and efficient capture of wave energy.

The wind wheel blade structure comprises an upper end cover, a vertical shaft, a tension bar, an external H-shaped wind wheel blade, an internal air duct and a lower end cover, the spiral design of the internal air duct is beneficial to guiding airflow to smoothly pass through an internal space, eddy current loss is reduced, the wind energy conversion efficiency is improved, and the wind wheel blade structure can be started at low wind speed. The internal air duct rotates at a constant speed to drive the external H-shaped wind wheel blades to rotate, the speed is controllable, and the effect of stably outputting electric power is achieved. The wind driven generator can be started at low wind speed, the speed is controllable, and electric power is stably output.

The utility model discloses a self-adaptive energy storage heating deicing system for a road surface, and solves the technical problems that the road surface is damaged or corroded and manpower is consumed due to the fact that ice and snow are removed by using mechanical equipment or a snow melting agent in the prior art. Comprising a first energy collection mechanism arranged on a road base layer and a road surface layer, a second energy collection mechanism arranged on one side of a road, an energy storage mechanism connected out of the first energy collection mechanism and the second energy collection mechanism, and a plurality of heat release mechanisms distributed in the road base layer in the length direction of the road. And the plurality of temperature sensors are distributed on the road surface layer along the length direction of the road and are respectively connected out of the energy storage mechanism. According to the utility model, the road is heated to remove ice and snow in a manner of converting vehicle mechanical energy, solar energy and wind energy into electric energy and then converting the electric energy into heat energy, so that the road surface is prevented from being mechanically damaged or corroded by a snow melting agent; the road ice and snow removing device is free of manual participation in the road ice and snow removing process, and manpower consumption is avoided.