301results about How to "Reduce power generation" patented technology

The invention discloses an assembled integral building and a construction method thereof. The assembled integral building comprises a reinforced concrete wall and floor slabs, wherein the reinforced concrete wall is formed by hoisting and assembling prefabricated composite insulating wallboards integrally at a construction site; a board body of each prefabricated composite insulating wallboard comprises a structure layer, an insulating layer and a protective layer from the inside to the outside in turn; a reinforcement cage is arranged in the structural layer; steel meshes are arranged in the concrete of the protective layer; the structural layer, the insulating layer and the protective layer are anchored together by inserting connecting members in a dotted distribution; the left and right edges of the protective layer and the insulating layer protrude out of the structural layer; a lower edge of the protective layer extends downward to form a bulged opening; the top parts of the protective layer and the insulating layer upward protrude out of the structural layer; and an upper edge of the protective layer is provided with a notch which corresponds to the bulged opening of the prefabricated composite insulating wallboard adjacent to an upper layer. The building overcomes the defects of erecting shuttering on site, binding steel bars and concreting in a traditional construction method, speeds up the construction, and lowers the construction cost; and the construction quality of the building structure can be sufficiently guaranteed.

The invention discloses an assembled integral shear wall structure system and a construction method thereof. Prefabricated composite wallboards are hoisted and assembled integrally at a construction site; a board body of the prefabricated composite wallboards comprises a structural layer, an insulating layer and a protective layer from the inside to the outside in turn; a reinforcement cage is arranged in the structural layer; the insulating layer is an extruded polystyrene foam plastic board; steel meshes are arranged in the concrete of the protective layer; and anchor bolts in a dotted distribution are connected among the structural layer, the insulating layer and the protective layer. Vertical seams and horizontal seams of prefabricated composite walls adopt structural self-waterproofing, so that common quality problems such as leakage and cracks and the like in a traditional process are solved. The prefabricated composite walls simplify construction processes, speed up the construction, and lower the construction cost. Furthermore, products prefabricated in a factory have uniform specifications and unified quality, so that the construction quality of a building construction can be sufficiently guaranteed; the industrialization, standardization, and generalization of the building walls are realized; and the products can be widely applicable to the construction of reinforced concrete buildings in the construction industry.

A liquid crystal display includes a liquid crystal display panel having a plurality of data lines, a plurality of gate lines crossing the plurality of data lines, and a plurality of liquid crystal cells, a timing controller to determine gray levels of input digital video data and a time at which a polarity of a data voltage to be supplied to the data lines is inverted, to activate a dynamic charge share control signal to indicate a time at which the gray level of the data voltage is changed from a white gray level to a black gray level and a time at which the polarity of the data voltage is inverted, to detect weakness patterns in which the data of the white gray level and the black gray level are regularly arranged in the input digital video data, and to activate a dot inversion control signal for widening a horizontal polarity inversion period of data voltages to be supplied to the data lines when the weakness patterns are input, a data driving circuit to convert the digital video data from the timing controller into the data voltage, to convert the polarity of the data voltage, to supply any one of a common voltage and a charge share voltage between a positive data voltage and a negative data voltage to the data lines in response to the dynamic charge share control signal, and to widen the horizontal polarity inversion period of the data voltages in response to the dot inversion control signal, and a gate driving circuit to sequentially supply a scan pulse to the gate lines under the control of the timing controller.

The invention relates to a precast concrete wallboard and a preparation method thereof. A wall body has a structural layer and a protection layer from inside to outside, wherein the structural layer is internally provided with a reinforcement cage, and a reinforcement fabric is arranged in the concrete of the protection layer; the protection layer is connected with the structural layer through a transverse connecting reinforcement connected to the reinforcement fabric; the left edge and the right edge of the protection layer protrude out of the structural layer; the lower edge of the protection layer downwards extends out of a protruded port; and the top of the protection layer upwards protrudes out of the structural layer; the upper edge of the protection layer has a dent corresponding to the protruded port of the adjacent precast concrete wallboard on the upper layer; and the two ends of a transverse bar of the reinforcement cage protrudes out of the left side surface and the right side surface of the structural layer of the wall body and form two rows of transverse steel ties bending inwards. The wallboard has the advantages that the construction process is simplified, the construction speed is accelerated, and the construction cost is reduced. Meanwhile, products precast by a factory have uniform specification and quality, and thus, the construction quality of a building structure can be guaranteed sufficiently. The precast concrete wallboard can be widely applied to construction of concrete steel buildings in building industry.

Methods for operating a wind turbine system are provided. In one embodiment, a method includes adjusting a threshold direct current (DC) bus voltage for a dynamic brake in a wind turbine power converter above a reference DC bus voltage based on at least one system condition. The method further includes gating the dynamic brake on when an experienced DC bus voltage is equal to or greater than the threshold DC bus voltage, and inputting a dynamic brake condition into a controller when the dynamic brake is gated on. The method further includes determining if a grid fault has occurred, reducing power generation of the wind turbine if no grid fault has occurred, and blocking the power converter if a grid fault has occurred. The method further includes gating the dynamic brake off when the experienced DC bus voltage is less than the threshold DC bus voltage.

A fuel cell system which includes: a fuel cell fed with a reaction gas for generating power; an output detection unit which detects output current and voltage of the fuel cell; a storage unit which stores a standard current-voltage characteristic of the fuel cell, from which a standard voltage of the fuel cell at an output current thereof is obtainable; and a gas feed mismatch detection unit which detects a gas feed mismatch of the reaction gas, based on a comparison between the detected output voltage of the fuel cell and the standard voltage at the detected output current, obtained from the standard current-voltage characteristic stored.

The invention provides a megawatt-stage vertical shaft wind power generator with an adjustable attack angle. The vertical axis wind power generator comprises an electric power conversion device, a speed increasing box, a power generator, a variable pitch motor, a main vertical shaft, a cantilever cylinder, blade crossbeams, and blades with airfoils, wherein the cantilever cylinder is sleeved on the outer side of the main vertical shaft; the main vertical shaft is connected with the cantilever cylinder through a bearing; one end of each blade crossbeam is fixed on the cantilever cylinder, and blade autorotation devices are mounted at the other end of each blade crossbeam; a lightning rod is mounted at the top end of the main vertical shaft; an anemoscope is connected with an electronic control device; and the electronic control device controls the blade autorotation devices on each cantilever crossbeam, so as to enable the blades to adjust the windward angles according to a preset program and enable the power generator to be throughout in a state capable of producing the maximum torque. The starting wind speed is effectively reduced, and the wind energy utilization rate is increased.

The invention discloses a carbon capture virtual plant scheduling optimization method, comprising the steps of S1, constructing a dual carbon amount model of a carbon capture unit for a thermal power plant, the dual carbon amount module being used for representing an absorption link and a regeneration link of a liquid storage type carbon capture unit in a decoupling manner; S2, constructing a virtual power plant aggregated with the thermal power plant and a clean energy power plant, and determining a scheduling optimization objective function and constraints of the virtual power plant by maximizing the net income of the virtual power plant; and S3, according to the predicted output of the clean energy power plant, carrying out scheduling optimization on operating parameters of the virtual power plant through the dual carbon amount model. The method of the invention has the advantages of enabling the power plant to obtain better operation benefits, maximizing the net income during the scheduling period, obtaining more significant carbon emission reduction benefits and higher economic benefits, and having better economy and low carbon performance.

In an air-cooled fuel cell system (10), a controlling apparatus (100) performs a temperature controlling process on the basis of the temperature of a fuel cell detected by a temperature sensor (500). At this time, if the cell temperature is greater than a target temperature Ta and if the cell temperature is less than a threshold temperature Tth for defining a boundary between (i) a temperature group TG1, in which a change in a cell voltage is small relative to the stoichiometric ratio of the air for power generation, and (ii) a temperature group TG2, in which a change in the cell voltage is large relative to the stoichiometric ratio of the air for power generation, the controlling apparatus (100) controls an air supplying apparatus (210) to increase the amount of the air supplied to an air intake manifold (320). If the cell temperature is equal to or greater than the threshold temperature Tth, the controlling apparatus (100) controls a variable valve (400) to increase the amount of the air flowing into a cooling air channel portion (315) without an increase in the amount of the air flowing into a power generating air channel portion 314.

The invention provides a piezoelectric vibration battery device, which relates to a piezoelectric electricity generator. The piezoelectric vibration battery device comprises a case (7), a plurality of suspended wall plates (5) and mass blocks (6), wherein the suspended wall plates (5) are arranged on the inner side of the case, the mass blocks (6) are connected with the case through the suspended wall plates, at least one piezoelectric element (4) is respectively pasted at both sides of the suspended wall plates, a rectifier (10), a charging controller (11) and an energy storage element (12) are also arranged in the case (7), one end of the case (7) is connected with the energy storage element (12) to be used as a positive electrode (8) of the battery, and the other end of the case (7) is connected with the energy storage element (12) to be used as a negative electrode (13) of the battery. The invention can convert the vibration mechanical energy of the environment into electric energy for replacing the ordinary battery to supply electricity to mobile electronic equipment, the battery charging or battery replacement can be avoided, and the application amount of the traditional chemical battery is reduced.

The present invention provides a fuel cell employing a metal separator in which low gas pressure loss, high hydrogen utilization factor operation and long term power generation are possible. The fuel cell according to the present invention is constituted by laminating a plurality of units, the units combining a metal gas channel plate having on both faces a frame portion and a plurality of gas channel sets formed inside the frame portion, a frame having a supply manifold for supplying reaction gas to an end turn-around portion of the gas channels closely attached to the frame portion of the above described metal gas channel plate and a discharge manifold for discharging reaction gas, a reaction gas diffusion layer in contact with the above described frame, an electrolyte membrane which is in contact with the above described diffusion layer and in which one side is in contact with an anode and another side in contact with a cathode, a reaction gas diffusion layer in contact with the above described anode or the above described cathode, the above described metal gas channel plate and the above described frame, wherein a plurality of supply manifolds and/or discharge manifolds are provided per each frame.

The invention discloses a multi-combination independent alcohol-water hydrogen generation fuel cell car. The multi-combination independent alcohol-water hydrogen generation fuel cell car comprises a methanol water storage vessel, at least two groups of methanol water reforming hydrogen generation and power generation modules, a car motor and at least two conveying pumps, wherein the methanol water reforming hydrogen generation and power generation modules are integrated with a reforming device and a fuel cell, a reforming chamber and a hydrogen purifying device are arranged in the reforming device, the temperature in the reforming chamber is 300 to 570 DEG C, methanol and water have the reforming hydrogen generation reaction in the reforming chamber to prepare hydrogen-containing gas, the hydrogen-containing gas is purified by the hydrogen purifying device to obtain hydrogen, and obtained hydrogen is supplied to the fuel cell; the fuel cell is used for generating electric power which is used for powering the car motor; the car motor is used for driving a car axle to rotate so as to enable a car to run. According to the invention, the speed for converting methanol and water raw materials into hydrogen is high, the methanol conversion efficiency is high, the utilization rate of methanol is high, and the hydrogen-containing gas is easy to purify; the reforming device is easy to start, the stability is good, the vibration quantity is small, parameters such as the hydrogen generation temperature are sensitive to control, the safety is high, and the reliability is high.

In a fuel cell system, regeneration-time voltage fixed control is implemented where during regeneration or when regeneration is expected to occur, output voltage of a fuel cell is set to a voltage value outside an oxidation reduction progress voltage range, and the amount of reactant gas supplied to the fuel cell is changed based on the amount of electric power remaining in an energy storage device. In the regeneration-time voltage fixed control, it is determined whether or not regeneration occurs while a moving body equipped with the fuel cell system is moving down a slope, and in the case where it is determined that regeneration occurs while the moving body is moving down a slope, the amount of the reactant gas supplied to the fuel cell is decreased in comparison with the case where it is determined that regeneration occurs while the moving body is not moving down a slope.

A method of operating a wind turbine above a predefined wind velocity comprising the step of operating a control parameter of the wind turbine within a tolerance band from a reference set-point curve of that control parameter. A wind turbine and a cluster of wind turbines is also contemplated.

The invention relates to a portable wind-solar complementary power storage and supply system. The system comprises a first power supply system and a second power supply system; the first power supply system comprises a wind driven generator, a photovoltaic module and a control inverter; the wind driven generator is used for conducting wind power generation so as to produce electric energy; the photovoltaic module is used for conducting photovoltaic power generation so as to produce the electric energy; the control inverter is connected with the wind driven generator and the photovoltaic module and used for tracking maximum power points of wind power generation and photovoltaic power generation respectively and outputting the electric energy produced by the wind driven generator and the photovoltaic module at the maximum power respectively, and the second power supply system is a solar rechargeable battery. According to the portable wind-solar complementary power storage and supply system, power generation can be conducted by means of wind energy and solar energy, regional power supply can be conducted on field operation, power supply can be conducted on equipment with certain power, and vehicle carrying, spreading and erecting are convenient to achieve.

A method and a system to influence the power generation of at least one adjustable speed generator. The system includes a first voltage source converter connected to a local AC bus. The local AC bus is provided with power by the at least one adjustable speed generator. A second voltage source converter connected to an AC grid. A DC link is connected between the first and the second voltage source converter. At least one control unit controls the first and the second voltage source converters. The at least one control unit performs the method to control the AC voltage in the local AC bus via the first voltage source converter and to modify a reference value for the AC voltage magnitude of the local AC bus in dependence on the AC voltage magnitude of the AC grid.

In the battery charging device of the present invention, a U, V, W phase voltage generating circuit detects a voltage signal of a U phase sub-coil of a three-phase alternating current generator, and generates a signal of a triangular wave that is in synchronization with the U phase. Moreover, a first triangular wave is generated in synchronization with a phase from 0° to 180° of the U phase rectangular wave, and a second triangular wave is generated in synchronization with a phase from 180° to 360° of the U phase. In addition, a V phase rectangular wave is generated in which the level is inverted at a voltage point of two thirds the peak voltage of the first triangular wave, and in which the level is inverted at a voltage point of two thirds the peak voltage of the second triangular wave, and a W phase rectangular wave is generated in which the level is inverted at a voltage point of one third the peak voltage of the first triangular wave, and in which the level is inverted at a voltage point of one third the peak voltage of the second triangular wave.

A thermoelectric conversion module includes a thermoelectric conversion module body which includes a plurality of thermoelectric conversion module substrates in which at least one of a P-type thermoelectric conversion element having a P-type thermoelectric conversion layer and a pair of connection electrodes which are electrically connected to the P-type thermoelectric conversion layer, or an N-type thermoelectric conversion element having an N-type thermoelectric conversion layer and a pair of connection electrodes which are electrically connected to the N-type thermoelectric conversion layer is provided on one surface of an insulating substrate having flexibility, the plurality of thermoelectric conversion module substrates being arranged such that a direction of the connection electrode and a direction of the insulating substrate are aligned, and a heat transfer portion which is provided on a side of the thermoelectric conversion module body close to at least one connection electrode of the thermoelectric conversion module substrate, presses the thermoelectric conversion module substrate in an arrangement direction, and transfers heat to the thermoelectric conversion module body or dissipates heat of the thermoelectric conversion module body. A thermal conductivity of the heat transfer portion is 10 W/mK or higher. A normal stress in a direction perpendicular to a surface of the insulating substrate in a case of pressing the thermoelectric conversion module substrate in the arrangement direction by the heat transfer portion is 0.01 MPa or higher.

Based on big data analysis and energy balance principles, the invention provides a thermoelectric load optimization scheduling system for multiple sets of gas-steam combined cycle units. The system obtains and uploads operating parameters of the gas-steam combined cycle unit measured and uploaded by field measurement instruments from a power plant DCS system; analyzes the operation parameters to obtain an actual operation trend curve of the equipment; combines the thermal demand and the power generation load demand as the total energy demand of the unit; the method aims at minimizing the totalconsumption of natural gas, thermal power and power generation load requirements of the thermal power plant are optimally distributed in all units through an optimization method, and the purposes that under the condition that the same thermal power and power generation load conditions are met, the comprehensive energy consumption of power generation and heat supply of the thermal power plant is the lowest, and the energy efficiency level is the optimal can be achieved. The system can effectively guide operating personnel to reasonably adjust the operating state, meet the production requirement, improve the heat supply quality, reduce the operating cost, achieve economic operation and improve the overall operating benefit of the thermal power plant.

This invention relates to a quasi-two dimension tracking light-gathering photovoltaic generating device including a light-gathering solar energy battery component array parts mounted on a one dimension automatic tracking solar unit, both ends of the shaft of which are supported on frames with high and low ends by bearings separately and at least one of the frames includes a highly regulated unit, which realizes the result of a two-dimension tracking solar system with a simple height regulation unit based on a one-dimension automatic tracking solar unit.

The invention discloses an energy storage scheduling method for a large power grid with high penetration rate of wind power. First, a corresponding wind power prediction risk analysis is made according to historical wind power prediction error and wind power prediction data, the credible capacity of wind power is obtained, and the load and the settlement electricity price are predicted. Then, according to the operation mode and parameter requirement of the electric power market, an appropriate two-level energy storage device is selected and used, and a corresponding two-level energy storage scheduling strategy is designed, to complete the scheduling of the grid connection power of a wind farm, the charge and discharge of an energy storage system and the grid-connection power of a thermal power plant. Therefore, the balance of supply and demand of the power system is reliably guaranteed, and the stability of the power grid is maintained.

The present invention is electrical stepless speed variator and its driving mode. The electrical stepless speed variator has a planetary sun gear connected to the inner rotor of the double mechanical port motor, a planetary ring gear connected through a clutch to the outer rotor of the motor, the clutch for controlling the connection and disconnection between the outer rotor and the ring gear, the first brake between the ring gear and the casing of the power assembly for braking the ring gear, and the second brake between the engine shaft and the casing of the power assembly for braking the engine. By switching with these two brakes and the clutch, the vehicle may be switched in different driving modes; and controlling the rotation speed of the inner rotor can control the switching of the electrical stepless speed variator in different mixed driving modes.

The invention provides an ISG (integrated starter generator) motor. The ISG motor comprises a shell, a stator, a rotor, a rotating shaft, two bearings, a front end cover and a rear end cover. The ISG motor is a disc-type motor, the rotating shaft is a hollow shaft, and the disc-type motor also comprises a separation plate, a ball-cage constant-speed coupler and a rotary transformer. The invention also provides a hybrid power drive system with the ISG motor. The hybrid power drive system comprises an engine, a car clutch, a drive motor, a transmission shaft driving axle and a control assembly, the engine is sequentially connected with the car clutch, the drive motor and the transmission shaft driving axle, the engine is coaxially and integrally installed with the car clutch and the drive motor, the ISG motor is connected with the engine by virtue of the ball-cage constant-speed coupler, and the ISG motor and the engine are coaxially installed in a splitting manner. The ISG motor is small in size, small in occupied installation space and small in weight, an additional set of flywheel and flywheel shell is not needed, the axial length is reduced, and the problems caused by the arrangement of a belt transmission device such as low transmission efficiency, high oil consumption and complicated structure of the drive system can be avoided.