3648 results about "Generating capacity" patented technology

An electromagnetic linear generator and regenerative electromagnetic shock absorber is disclosed which converts variable frequency, repetitive intermittent linear displacement motion to useful electrical power. The innovative device provides for superposition of radial components of the magnetic flux density from a plurality of adjacent magnets to produce a maximum average radial magnetic flux density within a coil winding array. Due to the vector superposition of the magnetic fields and magnetic flux from a plurality of magnets, a nearly four-fold increase in magnetic flux density is achieved over conventional electromagnetic generator designs with a potential sixteen-fold increase in power generating capacity. As a regenerative shock absorber, the disclosed device is capable of converting parasitic displacement motion and vibrations encountered under normal urban driving conditions to a useful electrical energy for powering vehicles and accessories or charging batteries in electric and fossil fuel powered vehicles. The disclosed device is capable of high power generation capacity and energy conversion efficiency with minimal weight penalty for improved fuel efficiency.

A vertical axis windmill is provided wherein the amount of wind directed to blades in the power producing part of rotation and the mechanical load of multiple generators is controlled by a feedback control to maintain a relatively constant rotational frequency of the shaft of the windmill. In a preferred embodiment, two wind foils extend radially outwardly from the blades to thereby provide a scoop capable of pulling in more air than would normally be received by the blades. The wind foils then direct the wind flow to the power producing part of rotation of the blades for maximum power output, when necessary. The wind foils can close to control the wind flow to the blades. The generating capacity of a plurality of generators is also controlled in response to shaft rotation to maintain substantially constant shaft rotation.

An electric power supply apparatus includes a distributed power generator such as a gas turbine generator and a power converter such as an inverter apparatus for converting electric power generated by the distributed power generator into AC electric power (alternating-current power) having a required frequency and a required voltage and supplying the AC electric power to a load. The electric power supply apparatus further includes a control unit having output voltage vs. output current characteristics for determining an output voltage corresponding to an output current of the power converter. The output voltage vs. output current characteristics has a first dropping characteristic for causing output electric power of the electric generator to be limited, between a first output current exceeding a power generation capability of the electric generator and a second output current exceeding a power converting capability of the power converter.

A generating facility is provided for generating electricity from both solar and non-solar energy sources. The solar generating portion of the facility includes capability to directly generate electricity from solar insolation, or to store the solar energy in a tangible medium, including stored heat, or solar generating fuel. The generating facility is configured to generate electricity simultaneously from both solar and non-solar sources, as well a solely from immediate solar insolation and from solar energy stored in a tangible medium. Additionally, the solar generating capacity may be segregated; such that separate spectra of solar insolation are used to capture heat for steam turbine based electrical generation, capture light energy for photovoltaic based electrical generation, and to grow biomass to generate a solar fuel.

An energy optimization method and control apparatus may be used in a single building or a group of buildings to optimize utility-supplied and renewable sources in order to minimize the total energy cost. Simultaneously, it may also produce and store energy, such as electricity or hydrogen, that can be used to fuel vehicles, provide a means for independent production of household energy needs, or both. Various factors, such as the production of thermal energy and electricity from the renewable sources, the current store of stored energy, the current and expected thermal and electricity requirements of the building (based on a profile), the current and expected electricity loads of the equipment used to process stored energy, the expected thermal and electricity generating capacity of the renewable sources and other factors can be used to determine the mix of renewable-based and utility-based energy that minimizes the total energy cost.

A detection voltage, which is obtained by dividing the voltage of a fuel cell 1 by resistors, is compared with a first reference voltage Vref1 by a differential amplifier. The differential voltage is input to a control section. The control section performs PWM control for the circuit section according to the difference. The first reference voltage Vref1 is set according to the dividing ratio of the resistors, based on the output voltage when the fuel cell generates power at the maximum power point. To determine the output voltage for maximum power generation, a characteristic curve representing a current-voltage characteristic is approximated by an approximating line within a range excluding an area in which the output voltage changes abruptly when the output current is nearly zero, and an extrapolated voltage is obtained on the extension line of the approximating line at an output current of zero. Fifty percent of the extrapolated voltage is then determined as the output voltage when the fuel cell generates power at the maximum power point. Thus, a fuel cell control system that identifies a highly precise output voltage for power generation at a maximum power point and controls power so that the maximum power point is not exceeded could be provided.

The invention relates to the field of solar cells, in particular to an efficient energy conversion device for a solar cell panel, an array and an application method thereof. The device comprises an input voltage and current sampling circuit, a DC-DC conversion circuit, an output voltage and current sampling circuit, a switching control circuit and a central processing circuit, wherein the centralprocessing circuit controls the input voltage of the DC-DC conversion circuit through the switching control circuit by taking the input voltage and current sampling circuit and the output voltage andcurrent sampling circuit as feedback. The device is an energy balance device which can solve the problem that the power generation quantity of the whole system is greatly reduced and the system cannot work normally due to mismatch of individual photovoltaic units in a solar photovoltaic array, save at most 50 percent of energy lost due to the mismatch under the actual installation condition and promote the power generation quantity of the solar power generation system to the highest level.

A generating facility is provided for generating electricity from both solar and non-solar energy sources. The solar generating portion of the facility includes capability to directly generate electricity from solar insolation, or to store the solar energy in a tangible medium, including stored heat, or solar generating fuel. The generating facility is configured to generate electricity simultaneously from both solar and non-solar sources, as well a solely from immediate solar insolation and from solar energy stored in a tangible medium. Additionally, the solar generating capacity may be segregated; such that separate spectra of solar insolation are used to capture heat for steam turbine based electrical generation, capture light energy for photovoltaic based electrical generation, and to grow biomass to generate a solar fuel.

A power supply for a downhole instrument is provided. The power supply includes high temperature rechargeable energy storage, power generation capabilities and provides for operation in high temperature environments. A method of fabrication and use are provided.

A wind power generation evaluation system includes: a laser aerovane that measures, with a laser, the direction and velocity of wind at a distance from a wind power generator' connected to an electric power system, to predict the direction and velocity of wind at the wind power generator; a second aerovane that measures the wind velocity and direction at the wind power generator; a wind power generation output calculation unit that integrates difference between power outputs calculated based on measurements by the laser aerovane and by the second aerovane, while referring to a windmill performance curve indicating output power characteristics of the wind power generator with respect to wind velocity, to produce a difference between the amounts of generated power; and an additional value calculation unit that calculates additional value of an influence on the environment based on the difference between the amounts of generated power produced by the calculation unit.

A generating facility is provided for generating electricity from both solar and non-solar energy sources. The solar generating portion of the facility includes capability to directly generate electricity from solar insolation, or to store the solar energy in a tangible medium, including stored heat, or solar generating fuel. The generating facility is configured to generate electricity simultaneously from both solar and non-solar sources, as well a solely from immediate solar insolation and from solar energy stored in a tangible medium. Additionally, the solar generating capacity may be segregated; such that separate spectra of solar insolation are used to capture heat for steam turbine based electrical generation, capture light energy for photovoltaic based electrical generation, and to grow biomass to generate a solar fuel.

An energy optimization method and control apparatus may be used in a single building or a group of buildings to optimize utility-supplied and renewable sources in order to minimize the total energy cost. Simultaneously, it may also produce and store energy, such as electricity or hydrogen, that can be used to fuel vehicles, provide a means for independent production of household energy needs, or both. Various factors, such as the production of thermal energy and electricity from the renewable sources, the current store of stored energy, the current and expected thermal and electricity requirements of the building (based on a profile), the current and expected electricity loads of the equipment used to process stored energy, the expected thermal and electricity generating capacity of the renewable sources and other factors can be used to determine the mix of renewable-based and utility-based energy that minimizes the total energy cost.

A method and apparatus is disclosed for monitoring the performance of a solar powered electrical supply where the supply comprises an array of photovoltaic cells that are mounted on a building. In one embodiment, the apparatus comprises: a device for producing a signal representative of solar irradiance; circuitry for computing a running performance signal by using at least the irradiance signal and a measure of the electrical power supplied to the load from the array; a radio for broadcasting the performance signal; and a portable unit for receiving the performance signal from the radio and for visually displaying the performance signal, power production, and electrical utility usage.

A power control interface between an unstable power source such as a wind farm and a power transmission line employs an electrical energy storage, control system, and electronic compensation module which act together like an “electronic shock absorber” for storing excess power during periods of increased power generation and releasing stored energy during periods of decreased power generation due to wind fluctuations. The control system is provided with a “look ahead” capability for predicting power output (wind speed conditions) and maintaining energy storage or release over a “narrow-band” range despite short duration fluctuations. The control system uses data derived from monitoring the wind farm power output and the power transmission line, and employs system-modeling algorithms to predict narrow-band wind speed conditions. The power control interface can also use its energy storage capacity to provide voltage support at the point of injection into the power transmission system, as well as fault clearance capability for “riding out” transient fault conditions occurring on the power transmission line.

The present invention discloses an automatic warehouse management method. The method comprises the following steps of: S100: receiving new orders, and generating capacity requirement data; S200: assigning production tasks to workshops; S300: delivering the assigned production tasks to production lines; S400: delivering parts to warehouse shelves; S500: sending a part transporting instruction to an AGV; S600: the AGV performing path planning; S700: driving the AGV to reach the target warehouse shelf; S800: loading parts to the AGV; and S900: transporting the parts to stations and updating stock part information. According to the system and the method, the circulation of the parts is accelerated, thereby improving production efficiency.

A process for retrofitting an industrial gas turbine engine of a power plant where an old industrial engine with a high spool has a new low spool with a low pressure turbine that drives a low pressure compressor using exhaust gas from the high pressure turbine, and where the new low pressure compressor delivers compressed air through a new compressed air line to the high pressure compressor through a new inlet added to the high pressure compressor. The old electric generator is replaced with a new generator having around twice the electrical power production. One or more stages of vanes and blades are removed from the high pressure compressor to optimally match a pressure ratio split. Closed loop cooling of one or more new stages of vanes and blades in the high pressure turbine is added and the spent cooling air is discharged into the combustor.

A power source device is provided which is capable of charging a secondary cell in a stable manner even in an environment in which power generated by a solar cell varies due to changes in sunlight intensity and / or ambient temperatures. By power generated by a solar cell module, an electric double-layer capacitor is charged and, by using a charging voltage of the electric double-layer capacitor, a booster-type DC-DC (Direct Current-Direct Current) converter is driven. A charge on / off controlling circuit detects the voltage of the electric double-layer capacitor and, when the voltage exceeds a high level threshold voltage, keeps a charge controlling signal (output signal from a terminal) in an active mode and performs a charge starting operation and, after that, when the voltage of the electric double-layer capacitor reaches a low level threshold value, holds the charge controlling signal in a non-active mode and performs a charge stopping operation.

The invention relates to a method for evaluating the new energy development potential of regional power grids based on power generation absorption. New energy power characteristics are described from the level of new energy output power parameters, and power grid structure constraints are described from the level of power grid load flow calculation parameters. Based on a sequential production simulation method, by establishing a multi-period load flow optimization evaluation model and adopting matlab software for programming simulation calculation, a corresponding new energy receptivity evaluation model is established with the power generation of new energy units as the objective function and the new energy wind curtailment / light curtailment rate as the constraint. The new energy development degree of the regional power grids is comprehensively measured, visual development potential measurement indexes are obtained finally, and the new energy receptivity trend of the regional power grids is analyzed in a drawing mode. The power generation of the power grids by renewable energy absorption is simply and visually calculated, and reasons for the insufficient new energy receptivity of the power grids are analyzed. The economy and safety of power grid operation are analyzed based on various operation scenes, and the new energy receptivity of the power grids under various scenes is studied.

An amount of electric power generatable by an exhaust gas-driven rotating electric machine is determined corresponding to an operating point, so that an increment amount of fuel by the exhaust gas-driven electric power generation is smaller than engine-driven alternator power generation. The power generation can be thereby performed by effectively utilizing exhaust energy of the engine.

A method for operating a wind farm is provided. The method includes determining a wind condition, determining a wake-effect between at least two wind turbines forming at least a sub-set of the wind farm, each of the at least two wind turbines having a yaw system, and determining a desired yaw angle setpoint for each of the at least two wind turbines so that a total power production of at least the sub-set is expected to be increased compared to independently operating the yaw systems of each of the at least two wind turbines. Furthermore, a wind farm is provided

In the case where a user changes a set state of apparatuses, an apparatus operation control portion repressively controls the apparatuses, in spite of an instruction of a control signal according to that change, so that an increasing amount of power consumption of the apparatuses obtained from an apparatus power consumption measuring portion will not exceed an increasing amount of the generating capacity of a generator obtained from a generating capacity measuring portion so as to gradually bring it closer to a target set state set up by the user.

A generating facility is provided for generating electricity from both solar and non-solar energy sources. The solar generating portion of the facility includes capability to directly generate electricity from solar insolation, or to store the solar energy in a tangible medium, including stored heat, or solar generating fuel. The generating facility is configured to generate electricity simultaneously from both solar and non-solar sources, as well a solely from immediate solar insolation and from solar energy stored in a tangible medium. Additionally, the solar generating capacity may be segregated; such that separate spectra of solar insolation are used to capture heat for steam turbine based electrical generation, capture light energy for photovoltaic based electrical generation, and to grow biomass to generate a solar fuel.

The invention discloses a switch magnetic resistance generator system capable of realizing rapid excitation / demagnetization. The system comprises a switch magnetic resistance motor body, a prime mover, a position sensor, a power converter, a DC power supply and a controller, wherein the power converter is a four-level power converter. By adopting the four-level power converter, at an excitation stage, in an angle position control mode, the exciter current of a phase winding is increased, and the energy storage of a magnetic field is increased so that the output power of an overall power generation system is improved and it is easier for the power generation system to reach a rated power; in an current chopping control mode, the excitation time is reduced, rapid excitation is realized, and the time of a generating stage is increased so that the generating capacity of a motor is enhanced and the output power of the system is increased; and at the generating system, when two voltage sources are utilized, rapid demagnetization can be realized.

The invention relates to a board band piezoelectric generating set. A plurality of socle beams L1, L2, L3 are divided into two groups; one end of each socle beam is fixed and the other end keeps free; the socle beams keep parallel with each other; a crossing section is arranged between the two groups of the socle beams; wherein, the socle beam consists of piezoelectric transduction elements (34, 36), a down-lead (31), a metal block (32) and electrodes (33, 35, 37). The electrodes and the transduction elements are alternately arranged; the down-lead (31) is arranged at the fixed end of the socle beam; the metal block (32) is arranged at the free end of the socle beam. The sizes and the structures of the socle beams L1, L2, L3 are different, the manufacture materials of the piezoelectric transduction elements are different and the qualities of the metal blocks are different, therefore, the resonance frequency of each beam is different. The two groups of the socle beams L1, L2, L3 are arranged in an interdigital structure in plane or an interdigital structure in space. The board band piezoelectric generating set can absorb the mechanical vibration or noise of a plurality of frequency components in the environment and realize the transformation from mechanical energy to electricity energy by the piezoelectric transduction elements so as to increase the generating capacity and improve the generating efficiency.

A control apparatus for a vehicle electric generator judges the currently available generating capacity of the generator and establishes a regenerative current mode of operation, utilizing an induced current of the field winding, only when the generating capacity is estimated to be below a predetermined level. The control apparatus also controls the conduction factor of a power transistor to adjust the average voltage applied to the field winding such as to prevent fluctuations in output current and generator torque that would otherwise occur at each changeover to / from the regenerative current mode.

The invention discloses a method and a system for optimizing scheduling for short-term combined generation of a cascade reservoir group. The method comprises the following steps: S1) establishing and storing two short-term optimizing scheduling models, namely, a maximum cascade generating capacity model and a maximum cascade energy storage model, by a scheduling server; S2) selecting a short-term optimizing scheduling model according to a generating optimizing target by the scheduling server; S3) collecting model solving materials by a data collecting device, and selecting an algorithm for solving the short-term optimizing scheduling model by the scheduling server; and S4) generating and outputting a short-term generating scheduling optimizing scheme by the scheduling server. According to the method provided by the invention, the benefit and the speed are both considered while an optimizing scheduling model for a cascade hydropower station and a solving algorithm are searched, and the optimal optimizing scheduling scheme for the short-term combined generation of the cascade reservoir group is achieved.

The invention belongs to the technical field of energy management of distributed generation energy supply systems of electric power systems. The control method comprises the following steps: before running a combined system on every workday, extracting history cooling load data and power load data of a terminal user from a historical data base and obtaining the delay variation curve of the coolingload and the power load of the terminal user during the whole workday by lone-term load predicting; according to load predicting results, working out the optimal generated output plan of the combinedsystem by adopting optimization control mathematical model; during the running of the combined system, carrying out optimization control calculation again by utilizing the terminal user real-time cooling and power load need obtained from the distributed control system, and modifying the generating capacity and the refrigerating capacity of the combined system. The invention utilizes a distributedmonitoring system to monitor the actual cooling and power load need of the terminal user and can modify the load forecasting result in real time and adjusting the respective controlled variable of the combined system.

The invention discloses an intelligent electric meter (100), and the electric meter (100) comprises a central processor (101); a metering module (102) which is connected with the central processor (101) and is used for the bidirectional metering of the electric quantity; a blockchain module (103) which carries out the data interaction with the central processor (101), and is used for achieving thepoint-to-point power transaction between nodes in a blockchain network in a region and the storage of he distributed electric quantity metering and transaction data. The electric meter provided by the invention achieves the power transaction and recording through the blockchain module (103), and enables the final electric quantity information and point-to-point power transaction information to bestored in the blockchain network in a distributed and non-tampered manner. The electric meter achieves the distributed power generation and storage and the bidirectional metering of the power generation quantity and power utilization quantity of a power user, and achieves the metering, transaction and recording of the electric quantity of a distributed intelligent microgrid. A distributed power generation side and power utilization side serve as the basis of the transaction and charging through the intelligent electric meter, thereby enabling the microgrid to be more economically feasible.

An in-vehicle generator is caused to start regenerative generation when the regenerative generation is possible. This regenerative generation can decrease a generation amount under a vehicle traveling state where fuel is consumed and exhaust gas is emitted, thereby decreasing a load of an engine and amounts of fuel consumption and exhaust emission. The fuel consumption or exhaust emission to be decreased is computed and transmitted to a managing center via an in-vehicle wireless terminal. The managing center provides a driver with a reward such as a service corresponding to the decreased amount of fuel consumption or exhaust emission that is computed in the relevant vehicle. This system enables the regenerative generation to be returned to the driver as an economic value, motivating the driver to decrease the fuel consumption or exhaust emission. This thereby contributes to the conservation of global environment.