30results about How to "Generating power is stable" patented technology

The invention belongs to the technical field of distributed generating micro-grid systems, and provides an energy management system for the grid-connected operation of a wind and photovoltaic power storage micro-grid system, wherein the micro-grid system is connected to an alternating-current bus through a current conversion system and connected with a large power grid, and the factory load is also connected to the large power grid. The wind and photovoltaic power storage micro-grid system is composed of at least a wind driven generator unit, at least a photovoltaic power generation unit and at least an energy storage device. The micro-grid energy management system controls the grid-connected operation of the wind and photovoltaic power storage micro-grid system, and carries out starting, stopping and power control on each unit of the wind and photovoltaic power storage micro-grid system, so that each unit of the wind and photovoltaic power storage micro-grid system can run safely and stably, only supplies power to the factory load and does not supply power to the large power grid. According to the invention, through the energy management of the wind and photovoltaic power storage micro-grid system, each unit of the wind and photovoltaic power storage micro-grid system can carry out grid-connected operation safely; and when the factory load is changed, the energy management system carries out starting, stopping and power control on each unit of the wind and photovoltaic power storage micro-grid system, so that each unit of the wind and photovoltaic power storage micro-grid system can run safely and stably, only supplies power to the factory load and does not supply power to the large power grid.

The invention discloses a variable-pitch robust control method based on a UDE for a wind generating set. The method comprises the steps of creating a dynamic model of wind-driven generators on the basis of unmodeled dynamics and disturbance of the wind generating set; defining dynamic characteristics of regulation errors and expectation errors; rewriting the dynamic model of the wind generating set and obtaining a preliminary expression of a pitch angle controller; arranging a low pass filter for carrying out approximation on non-affine uncertain items and disturbance terms of the dynamic model of the wind-driven generators, substituting the approximation result into the preliminary expression of the pitch angle controller, carrying out Laplace transformation, carrying out inverse Laplace transformation after merging and sorting and obtaining final pitch angle control signals. In the design process, the problem that the design of a non-affine system controller is difficult is solved, the unmodeled dynamics and the environmental disturbance of a system are fully considered, the structure of an obtained controller is simple, the number of needed parameters is small, the robustness is good, the anti-jamming capability is high, a more stable wind wheel rotation speed and more stable generation power can be provided, and high-quality electric energy can be provided for a power grid.

The invention relates to the field of power, in particular to a method for wind generation and device thereof. The method includes the steps of: firstly compressing air into an air storage container, using the high-pressure air in the air storage container to drive a turbine and achieving the wind generation by a generator driven by the turbine. An air compressing system is arranged between a blade transmission set and a generator set, namely, the kinetic energy from the rotation of the blade is converted into the compressed air by an air compressor to be stored; then the compressed air in the air storage container of the air compressor drives the generator set to rotate to achieve the generation, so that the power of generation can be stabilized greatly through the adjustment of the air outlet valve of the air storage container, the adjustment of the brake and rotary speed of the blade can be realized through the configuration of the air compressing system and the like. The air can be stored when the wind is heavy or released when the wind is light, thus the wind generation is not limited by the wind power any more.

The invention discloses a device for controlling loading and deformation of a wind turbine blade. The device is characterized in that the tip of the wind turbine blade is provided with a free rotation-type blade with proper length; a steering engine in the free rotation-type blade is connected with a control plane at the rear through a drive rod; the control plane is driven by the steering engine to rotate, and therefore the aerodynamic configuration of the free rotation-type blade is changed; the free rotation-type blade rotates around the wind turbine blade under the action of aerodynamic moment to change an angle of attack between the free rotation-type blade and incoming flow, and therefore the aerodynamic loading and deformation of the wind turbine blade are controlled. The device disclosed by the invention is broader in application range, and certain modification is performed on the traditional mature commercial wind turbine blade; not only is the precious time saved and the cost of redevelopment reduced but also the aerodynamic performance of the wind turbine blade under different working conditions can be improved; the output power of a wind turbine under different incoming flow conditions is stabilized; the working envelope of the wind turbine is enlarged, and therefore the annual energy output of the wind turbine is advantageously increased, and the safety of the blade and related equipment is also enhanced.

The invention discloses a water reaction metal fuel cyclone punching power generation system, and aims to solve the problems of low efficiency, environmental pollution, high fuel consumption and the like in traditional power generation modes. The water reaction metal fuel cyclone punching power generation system comprises a water storage container, a high-pressure pump, a high-pressure power system, a water pressure stabilizing unit, a machine box, a cyclone generator, an air supply system, a punching cone, a combustion chamber, a turbine set, a generator set and a waste gas treatment device.The water reaction metal fuel cyclone punching power generation system realizes controllable continuous reaction of water and metal particles under the conditions of normal temperature and normal pressure, is low in cost and high in efficiency, and is adopted as a power source of a power generation system to realize continuous and stable power generation of the power generation system. Further, the water reaction metal fuel cyclone punching power generation system adopts the water and metal reaction, so that the fuel cost is reduced, the ecological environment is not polluted, higher power generation efficiency and adaptability are achieved, and higher actual application value is achieved. The water reaction metal fuel cyclone punching power generation system is skillful in concept and reasonable in design, and can adapt to various working conditions to achieve wide application prospect.

The invention relates to an active motion suppression device for an offshore floating scientific research platform. The two ends of folding canvas are fixed to a pair of rigid movable supports; the wave measuring radar can monitor the sea wave environment condition far away from the platform in real time and obtain wave data, and the controller controls the rigid moving support to move to the position where the floating platform is prevented from generating the heaving motion trend under the influence of waves in advance according to the wave data. The controller can judge the force application direction of waves to the folding canvas in real time according to the damping direction of the damping sensor, so that the driving device is controlled to drive the rigid moving support to move along the sliding rail, the middle of the folding canvas is aligned with the center of the waves, and the folding canvas is unfolded as much as possible. The purpose of reducing heaving, rolling and pitching motions of the platform at the same time is achieved. In addition, the device can also effectively utilize ocean wave energy to generate electricity, so that electric energy supply is continuously provided for the offshore floating type scientific research platform.

The invention discloses a photovoltaic panel film layer for river regulation and a production process, the film layer is used for the surface of a photovoltaic panel, and the film layer comprises the following raw materials in parts by weight: 50-70 parts of epoxy modified polyacrylic resin, 1-5 parts of a curing agent, 2-8 parts of an infrared reflection filler, 1-5 parts of a heat dissipation filler, 1-10 parts of a self-cleaning filler, 0.2-0.6 part of a leveling agent and 15-30 parts of a solvent. According to the film layer for protecting the antireflection layer of the photovoltaic glass, the antireflection layer of the antireflection glass can be well protected, the service life of the antireflection layer is effectively prolonged, and the stability of the power generation power of a component is ensured. By reasonably selecting the raw materials and proportion of the components, the components of the film layer have a synergistic effect, the light transmittance of the photovoltaic panel is maintained, meanwhile, the passing rate of infrared rays is greatly reduced, the heat dissipation filler is cooperated, the temperature of the inner layer can be greatly reduced, the efficiency of a component in the actual use process is improved, meanwhile, the surface hardness of the coating is high and is 2H or above, and the service life of the coating is prolonged. And the coating is scratch-resistant and good in weather resistance.

The invention relates to the technical field of wind power generation, and discloses a variable pitch device for a wind power generator. The variable pitch device comprises a nose plate; and a fixed mounting ring is fixedly mounted on an outer ring on the lower surface of the nose plate. A fixed way of a paddle is changed to a movable way; and when wind changes, the paddle is first detached from ablade bearing, then a variable pitch motor is started to drive the blade bearing to rotate, and next the paddle is pushed by a hydraulic rod to return to the original position, so that clamping rodsare inserted in clamping grooves, the angle adjustment of the paddle on the blade bearing is started, and the variable pitch motor first drives the blade bearing to rotate before the paddle rotates every time, and therefore, tooth grooves in the inner ring of the blade bearing rotate to different positions before the paddle is adjusted to enable the tooth grooves in the inner ring to be meshed with a variable pitch gear in turn, thereby ensuring the wear uniformity of the tooth grooves in the inner ring of the blade bearing, and prolonging the service life of the wind power generator.

The invention discloses a wave energy recovery device and energy recovery method based on an electrochemical principle, and belongs to the technical field of ocean wave energy recovery. The wave energy recovery device comprises an energy recovery mechanism, wherein the energy recovery mechanism is used for converting wave energy of pressure generated by a seawater liquid level change into electric energy, and the energy recovery mechanism comprises a working electrode, a diaphragm and a counter electrode; the working electrode is made of a double-electric-layer structure material; the energy recovery mechanism converts the wave energy generated by the seawater liquid level change into the electric energy by adopting the pressure-induced potential variation characteristic of the double-electric-layer structure material; and the energy recovery mechanism obtains the current liquid level change according to the relation between the power corresponding to the electric energy obtained by wave energy conversion and the corresponding liquid level change and the current power, thereby achieving real-time recovery of the ocean wave energy. According to the wave energy recovery device, the wave energy can be converted into the electric energy at the low compression frequency, and the wave energy with the frequency lower than the lowest recovery frequency of an existing wave energy recovery device can be recovered, so that the recoverable wave frequency interval is widened.

The invention discloses water-supported floating hydroelectric power generation equipment, and mainly relates to the technical field of hydroelectric power generation. The equipment comprises a reinforced concrete center tower, an annular pontoon with wing plates, an annular supporting framework, an adjustable motor driving device assembly and generators, wherein the annular pontoon with the wing plates is concentrically and rotationally arranged outside the reinforced concrete center tower; the adjustable motor driving device assembly comprises a tight supporting chain, a chain supporting device and a chain horizontal position maintaining and adjusting device; and the generators are arranged in the reinforced concrete center tower. The equipment has the beneficial effects that a novel hydraulic power generation mode is provided, and the energy of the flowing water of the river can be fully utilized. The equipment is simple in overall structure, low in manufacturing cost and relatively stable in power generation power and power generation current, can be used for manufacturing large, medium, small and micro equipment of various models, and can be respectively installed on different river reaches of more than 400,000 kilometers in domestic.