598results about How to "Improve wind energy utilization" patented technology

Kite generate electricity methods is that generate electricity/ electric motor, gear shifting box are installed at wind direction turn plate, it is characterized in: kite control device, ropes, kite, hauling engine, sensor and computer control device, electro-magnet brake, prevent air craft knock into kite device, kite horizontal position automatic regulating apparatus, elastic safety device. Kite windward angle is changed by control device on ground. When the kite surface is perpendicular to airflow, kite produces maximum pull by wind resistance, and kite generates electricity by dragging generator with ropes. In retrace backing out during, kite surface approaches and parallels to airflow with minimum resisting force by changing kite windward angle through kite control device, and generator changes into electric motor which is provided energy by outer portion, and draws kite back with ropes. Kite generates electricity intermittently by using upper air current.

The invention belongs to the field of motor optimization designs, and relates to a multi-objective hybrid particle swam optimization design method for a double-fed wind power generator. The method comprises the following steps of: (1) determining a constraint condition and a to-be-optimized design variable of the double-fed wind power generator, and establishing sub-objective function equations to form a multi-objective function; (2) constructing variable space by using the to-be-optimized design variable, and constructing non-dominated solution sets of population according to the quality of an objective value; (3) ordering the non-dominated solution sets according a Pareto domination mechanism, determining a population niche by taking a non-dominated solution as a core, establishing a particle speed updating mechanism and finally obtaining an optimal design scheme; manufacturing a mode machine according to the optimal design scheme, inspecting an actual operation index of a motor, and comparing the actual operation index with an index given by the design scheme; and if the actual operation index exceeds a requirement range of operation indexes, adjusting a performance design scheme. Due to the adoption of the motor optimization design method provided by the invention, overall economic benefit and wind energy utilization rate of a wind power generating system can be improved.

The invention provides a wind turbine generator control method, a controller and a control system of wind turbine generator. The method comprises the steps of acquiring the air velocity in front a hub by a distance two to three times the diameter of an impeller, the pitch angle of the impeller at the current moment as well as the rotation angular speed of the generator, calculating the pneumatic torque of the impeller, and calculating corresponding electromagnetic torque; acquiring the current torque given value and a pitch angle given value; and correcting the given value outputted by a torque controller or a variable-pitch controller. The controller comprises a pneumatic torque calculation module, a torque controller, a variable-pitch controller and a controller given value correcting module. The control system comprises a laser radar wind speed measurement instrument, a wind turbine generator, and the above controller. The wind turbine generator control system provided by the invention can respond to the wind speed change in advance to correct the variable-pitch and torque control effect so as to improve the wind energy utilization rate of the wind turbine generator, thereby obviating integral fatigue loads and power generation loss caused by impeller inertia and delay of the pitch-variable system.

The invention discloses a variable speed wind-power system based on a variable frequency transformer and a control method of the variable speed wind-power system. The variable speed wind-power system comprises a cage type wind-power unit group, a variable frequency AC bus, a booster transformer, a high voltage transmission line, a step down transformer, a variable frequency transformer and a power frequency power grid, wherein a variable frequency AC sent by the cage type wind-power unit group is collected to the variable frequency AC bus, the variable frequency AC subjected to voltage reduction of the step down transformer enters the variable frequency transformer, the variable frequency transformer converts the variable frequency AC into power frequency AC, and the power frequency AC is injected into the power frequency power grid. According to the variable speed wind-power system based on the variable frequency transformer, the single-machine capacity of the wind-power unit group can be increased, the failure rate of the wind-power unit group is reduced, the maintenance work is reduced, the effective power generation time is increased, the wind energy utilization rate can be increased, and mechanical stress and output power fluctuation are decreased. The control method is simple in control and is convenient for operation.

The invention relates to a wind-magnetism pyrogenic water heater which comprises a vertical shaft-type S-shaped wind turbine and a pyrogenic device, wherein the upper cover and lower cover of the wind turbine are divided into two layers by a layering plate, and each layer is equipped with two semi-cylindrical blades; the openings of the two semi-cylindrical blades of each layer are opposite to form an S shaped, and a part of overlapping area is arranged on a rotating center; a water-storing tank and an accelerator are installed on a pyrogenic device support, and the input end of the accelerator is connected with the transmission shaft of the fan; and an output shaft passes through the bottom of the water-storing tank, a turntable provided with a permanent magnet is installed on the output shaft, and the bottom of the water-storing tank is connected with a heating plate. The water heater provided by the invention has the advantages that the wind energy conversion efficiency is high, the windward area is large, no requirements on the wind direction exists, and the eddy current pyrogenic efficiency of the pyrogenic device is high.

The invention discloses a lift-drag complementary vertical axis wind wheel, which comprises a wind wheel axis. The wind wheel axis is provided with two to three lift-type blades and two to three drag-type spiral blades, and the ratio of the rotation diameter of the drag-type spiral blades to the rotation equatorial diameter of the lift-type blades is 1:3-7. Compared with the prior art, a structure of which the ratio of the rotation diameter of the drag-type spiral blades to the rotation equatorial diameter of the lift-type blades of 1:3-7 is designed, so that the wind energy utilization ratio of the wind wheel is 5 percent higher than the prior complementary wind wheel. The compactness of the lift-type blades sigma is between 0.13 and 0.4, and the output power of the lift-type blades in the interval is maximum; and a spiral angle of the drag-type blades is designed between 90 and 360 degrees. Partial downwind concave blades are stressed by the thrust of wind at arbitrary intersection angle so as to increase the positive moment of the wind wheel and increase the efficiency of the wind wheel. End covers are arranged at two ends of the drag-type blades and partition boards are arranged in the blades so as to increase the wind gathering capability of concave blades, increase the positive moment and improve the wind wheel efficiency.

The invention discloses a variable pitch and variable speed wind generating set, comprising a three-blade wind turbine for collecting wind energy. A wheel hub of the three-blade wind turbine is internally provided with a variable pitch device; a main shaft of the three-blade wind turbine is connected with a speed-increasing box which is connected with a synchronous generator with a coaxial exciter by a coupler; and the variable pitch device and the synchronous generator are connected with a PLC control panel which is used for controlling the connected variable pitch device to adjust blade angle, thus adjusting an output power value of the generator. The wind generating set adopts the combination of a variable pitch controller and a power controller, completes optimization to the output power of the set and leads the set to operate in optimal state, thus obtaining maximum wind energy utilization ratio and improving the generating efficiency of the set. The wind generating set can absorb and release transient wind energy, has smooth and stable output power of the set, good electric energy quality and small shock to load of a transmission mechanism. A frequency converter has high reliability and the cycle operation speed of a main controller of the wind generating set is high.

This invention relates to a telescopic dual-rotor wind-electric excitation mode, its control system and its motor, in which, a magnet inner rotor rotating corresponding to a stator is set on the sub-drive shaft of the generator and driven by it, a ring rotor driven by the primary drive shaft and rotating against the stator is set on the primary drive shaft, and the ring rotor is in the structure of surrounding the magnet inner rotor and rotating around it, the pole logarithm of the inside winding of the ring rotor is the same with the magnet inner rotor as Pe and the pole logarithm of the outside winding of the ring rotor is the same with the stator winding as Pg and the outer winding and the inside winding are connected in phase reversion, a primary vane rev testing device and a sub-vane rev testing device are set on the main and sub-vanes transferring rev signals to the integrated control device of the set, and the crab controller and the integrated control device are connected in the mode of controlling rotation of wind direction under the main vane.

The invention discloses a cross foldable automatic retracting and spreading wing type sail. A first fixed pulley is fixed at the upper end of a multi-section main mast, a second fixed pulley is fixed at the right end of a top frame cross rod, and a third fixed pulley is fixed at the right end of a bottom frame cross rod. The left ends of an upper spring telescopic rod and a lower spring telescopic rod are fixedly connected with one corresponding frame cross rod respectively, and the right ends are fixedly connected with one corresponding sliding block in snap grooves respectively. A first sail body fixing mast is arranged close to the right of the multi-section main mast, the upper end of a second sail body fixing mast is fixedly connected with a first sliding block at the top, and the lower end of the second sail body fixing mast is fixedly connected with a second sliding block at the bottom. One end of a first pulling cable is fixedly connected with the lower end of the inside of a base, and the other end is fixedly connected with the first sliding block. One end of a second pulling cable is fixedly connected with the upper end of the inside of the multi-section main mast, and the other end is fixedly connected with the second sliding block. By means of the sail, the sail is driven to be spread and retracted automatically by using hydraulic lifting rods as power, and accordingly, the wind energy utilization rate is improved.

A VSCF wind motor excitation control system relates to wind generator, especially the tandem permanent magnet excitation VSCF dual-rotor wind motor and the excitation control system, which includes a main motor. The exciter is installed in the shell in coaxial series with the main motor through the main shaft of main wind wheel. The permanent magnet is set in the magnetic yoke of permanent magnet outside rotor, to constitute the outside rotor of exciter. The exciter constitutes a relative rotating structure with the inside rotor through a connector and a rotating structure relative to the stator of motor. The deputy wind wheel constitutes a structure to drive the permanent magnet outside rotor on the deputy shaft. The deputy transmission shaft driven by the deputy wind wheel links the master transmission shaft driven by the master wind wheel coaxially in the way of mutual rotation.

A disk type generator capable of changing power is disclosed. The disk type generator comprises a generator shaft; one end of the generator shaft is connected with a power input apparatus; the disk type generator also comprises disk type motors, a control signal collection and feedback unit and a control unit; the number of the disk type motors is at least two; each disk type motor comprises a stator and a rotor; the stators and the rotors are alternatively arranged on the generator shaft in a sleeving manner; the disk type motors are arranged on the generator shaft in a sleeving manner; the stators of the disk type motors are provided with electric power output ends; the electric power output ends are connected with output cables and externally connected with a power grid through the output cables; a control switch is arranged between the disk type motors and the output cables; the input end of the control signal collection and feedback unit is connected with the output ends of the disk type motors; the output end of the control signal collection and feedback unit is connected with the input end of the control unit; and the output end of the control unit is connected with the control switch. The disk type generator is simple in structure, and capable of stably outputting voltage and automatically changing the output power according to changes of external conditions at the right moment.

The present invention provides a closed cabinet cooling system, which is used to cool at least one heat-generating device in a closed cabinet, which includes a circulation channel, a cooling device, a heat exchange device, a driving device and a heat exchange medium; the heat exchange device is arranged in On the circulation channel, the cooling device is connected to the circulation channel or the heat exchange device; the driving device drives the heat exchange medium to circulate in the circulation channel, and the heat exchange medium passes through the heat exchange device and the heat exchange device. The heat generating device performs heat exchange. The airtight cabinet cooling system provided by the present invention can effectively cool the heat-generating devices in the air-tight cabinet in a high-temperature environment, ensure that the heat-generating devices are in a suitable temperature range, and avoid malfunctions caused by excessive temperature.

The present invention discloses an optimization design method of a blunt trailing edge airfoil under the condition of surface roughness of a wind turbine blade. The method comprises the following steps: forming parameterized control equations of a blunt trailing edge airfoil profile by adopting a generalized functional integrated expression and a B-spline curve of the wind airfoil; by using the method of shifting coordinates of the specified position of the leading edge of the airfoil, adding a boss to the specified position of the suction surface to simulate the surface roughness of the blade; taking a shape function coefficient of the airfoil, control parameters of the B-spline curve, the thickness of the blunt trailing edge and a distribution ratio of the blunt trailing edge on the upper side of the mean camber line as design variables, using particle swarm optimization coupled XFOIL software to optimize the rough blunt trailing edge airfoil profile, and proposing an optimization design method of the blunt trailing edge airfoil under the condition of the surface roughness of the blade; and for the rough S822R airfoil (R represents rough), optimizing to obtain the blunt trailingedge modification with thickness of 2.13% and thickness distribution ratio of 0:1, and using the CFD method to study the lift and drag coefficients and the ratio of lift to drag of the airfoil. According to the method disclosed by the present invention, the aerodynamic performance of the blunt trailing edge airfoil under the condition of the surface roughness of the wind turbine blade can be significantly improved, and the wind energy utilization efficiency of the wind turbine under the harsh working environment is better enhanced.

The invention relates to the filed of wind power generation, and aims to provide a vertical axis wind power generation system with unidirectional-opening type blades. The vertical axis wind power generation system has the beneficial effects that the wind area is increased, the wind power generation system is suitable for the manufacture of high-power fans, the flexibility is improved, and the utilization rate of wind energy is improved. The wind power generation system comprises a generator unit, a windmill bracket, a power transmission shaft and a plurality of blades, wherein the blades are fixedly arranged on the windmill bracket and the power transmission shaft, each blade comprises a lattice-shaped frame body, and each lattice of the frame body is connected with a unidirectional-opening type small blade. Compared with the original other vertical axis wind power generation systems, the vertical axis wind power generation system has the advantages that the wind area is effectively and greatly increased, so the output power and the utilization rate of the wind energy are greatly improved; the structure is simple, the cost is low, the wind power generation system can be manufactured into a large or ultra-large wind power generation system, the output power can be flexibly controlled, and the safety of the fans can be improved.

The invention discloses a wind power generator comprising a tower, a first wind wheel, a cabin, a first wheel hub, a first main shaft, a first generator set and a yaw driving system, wherein the first wind wheel comprises a plurality of vanes, the cabin is installed on the tower, the first wheel hub is used for installing the first wind wheel, the first main shaft extends out of one end of the cabin, the first generator set is arranged in the cabin, and the yaw driving system is arranged at the lower end of the cabin; and one end of the first main shaft is connected with the first wheel hub, and the other end of the first main shaft is connected with the first generator set through a first drive system. The wind power generator also comprises a first wind wheel, a second wheel hub, a second main shaft and a second generator set, wherein the first wind wheel comprises a plurality of vanes, the second wheel hub is used for installing the second wind wheel, the second main shaft extends out of the other end of the cabin, and the second generator set is arranged in the cabin; and one end of the second main shaft is connected with the second wheel hub, and the other end of the second main shaft is connected with the second generator set through a second drive system. The wind power generator has low cost and can effectively improve the utilization rate of wind energy.

The invention provides a hydrogen production capacity optimization and configuration method for wind power absorption and wind curtailment through a hydrogen production system. The method is characterized in that the structure and operation characteristics of the wind power hydrogen production system are analyzed, and accordingly the hydrogen production capacity optimization and configuration method for wind power absorption and wind curtailment through the hydrogen production system is disclosed. By analyzing and calculating the wind curtailment level of a wind power plant, a wind power wind curtailment duration curve is formed, a wind power annual wind curtailment power statistic model is built through the interval estimation method, the maximum economic benefit serves as the target, the optimal capacity configuration interval of the hydrogen production system is determined by means of the interval optimization theory, and a multi-attribute decision-making model is built so that the optimal electrolytic cell configuration scheme of the hydrogen production system is determined. According to the method, by means of the hydrogen production system with the optical capacity, wind power adsorption and wind curtailment are conducted through the hydrogen production system, and considerable social benefits are higher on the basis of realization of wind power plant benefits.

The invention discloses a multi-wind-direction accelerating aerogenerator, pertaining to the technical field of the aerogenerator. The structure of the aerogenerator comprises a rotating vane, the shaft of which is arranged vertically and the top of which is connected with a generator shaft, and rotating vane blades are evenly distributed on the exterior of the rotating vane shaft and arranged vertically. The aerogenerator is characterized in that: fixed vane blades are evenly distributed around the rotating vane by taking the rotating vane shaft as the axes and arranged vertically, externally wide and internally narrow diversion air passages are formed between the neighboring fixed vane blades; no steering mechanism is needed and full utilization of wind energy can be realized; the structure is simple, the implementation is easy and the cost is low; whatever the wind direction is, wind can be blown into the rotating vane through the diversion air passages among 2 to 3 fixed vane blades to drive the rotating vane to rotate, and then the generator is driven to rotate by the rotating vane shaft, thus achieving the purpose of power generation. The diversion air passages formed between the neighboring fixed vane blades can accelerate the speed of wind blowing into the rotating vane, thus utilizing the wind energy fully.

The invention provides a vertical-axis wind driven generator. The vertical-axis wind driven generator comprises fan blades, a disc-type motor, fan blade supports and a vertical column. The vertical-axis wind driven generator is characterized by further comprising a wind blocking and collecting plate, a wind velocity transducer, a controller, an angle adjusting device and an empennage; the wind blocking and collecting plate is a cone and comprises a large wind collecting port and a small wind exhaust port, the fan blades and the disc-type motor are arranged on the wind exhaust port in the cone of the wind blocking and collecting plate, and the wind blocking and collecting plate is connected with the vertical column through a bearing; the wind blocking and collecting plate is arranged on the vertical-axis wind driven generator, wind can be collected when the wind velocity is smaller than the rated wind velocity, the wind power utilization rate is increased, when the wind velocity is larger than the rated wind velocity, wind is blocked, the rotating speed of the generator is limited, the generator and a circuit are protected, a velocity-limiting mechanism is separated from and is not directly connected with a wind driven generation mechanism based on the wind blocking velocity-limiting principle, the wind driven generation mechanism is more stable, and high-strength materials do not need to be utilized to overcome the influences caused by instability.

The invention discloses a power-heat decoupling system in a heat-power cogeneration system. The power-heat decoupling system comprises a gas generator, a heat-power set, a wind power generation device, a heat storage device, a power-heat conversion device, a power load and a heat load, wherein the gas generator is connected with the power load; the wind power generation device and the heat-power set are connected with the heat storage device through the power-heat conversion device; the heat-power set is connected to the power load, the heat load and the heat storage device respectively; the heat storage device is connected to the heat load. A method comprises the following steps: determining demanded quantity of the heat load and the power load, the purchased wind power unit price, fuel unit price, power selling price and heat selling price; determining power quantity and heat quantity generated by unit fuel and heat generated by unit power quantity through power-heat conversion; solving power of the heat-power set, the heat storage device and the gas generator, interaction power of the wind power generation device and the heat storage device, and interaction power of the heat-power set and the heat storage device; and regulating the heat load and the power load via the heat storage device and the gas generator if the heat load and the power load have fluctuation. Through the power-heat decoupling system, an operation method of ordering power by heat is decoupled; and the problem of the wind power consumption is solved.

The invention discloses a vertical type rotating impeller and a vertical type wind driven generator, relating to a rotating shaft and a wind driven generator perpendicular to a wind direction, and aiming at providing the wind driven generator which has simple structure, low cost, high wind energy utility ratio and wide application range. The vertical type rotating impeller comprises a vertical supporting device provided with a sleeve rotor; the sleeve rotor can rotate around the vertical supporting device; the outer side of the sleeve rotor is fixedly provided with a rotor frame; the rotor frame is provided with a plurality of mutually parallel blade shafts; the blade shafts are provided with rotating blades; the rotating blades can rotate relative to the rotor frame; when the rotor frame rotates to an upwind area along with the sleeve rotor, the rotating blades rotate to a position in an alpha plane included angle with the rotor frame along the wind direction so that both sides of the rotor frame are communicated; and when the rotor frame rotates to a downwind area along with the sleeve rotor, the rotating blades rotates to a position parallel to a plane provided with the rotor frame along the wind direction so that the rotor frame forms closed blade surfaces.

A wind water-pumping generating system includes a reservoir, a water turbine, a generator connected with the water turbine and a transmission system. A lower reservoir is built below the height of outlet end of the water turbine. The lower reservoir forms a water delivery passage with the upper reservoir via the water pump set. Each water pump of the water pump set is connected in the wind generating system, which comprises a stabilized DC generating set consists of a fan, a pressure-regulating device and a rectifier and a power-splitting controller. When there is wind, the wind generating system starts to work, and the water pump can delivery the water in the lower reservoir back to the upper reservoir, so that the water can be used circularly.

The invention discloses a heat dissipation device. The heat dissipation device comprises a fan, a plurality of cooling fins arranged in parallel, and an air guiding pipe penetrating through the cooling fins. One end of the air guiding pipe is communicated with the fan. A plurality of air holes are formed in the air guiding pipe. Each air hole is located between the corresponding two adjacent cooling fins. In the heat dissipation device, whole air flow generated by the fan flows to the air guiding pipe and is sprayed out only through the air holes, and therefore the wind energy utilization rate of the fan is increased. In addition, the heat dissipation structure that the air guiding pipe penetrates through the cooling fins is adopted, and therefore the heat dissipation efficiency of the heat dissipation device is improved.