52 results about "Electrical efficiency" patented technology

The application relates to a performance analysis method of an advanced adiabatic compressed air energy storage system, which comprises the following steps: when the application scene is determined, the inlet pressure and temperature of a first compressor, the outlet pressure of a last compressor, the inlet pressure of a first expander and the outlet pressure of a last expander are known; the outlet temperature of the first compressor, the outlet temperature of the first expander, the pinch point temperature difference of a heat exchanger, the isentropic efficiency of each compressor and expander, the compressed mass flow, the compression time length, the expanded mass flow, the expansion time length are unknown; the outlet temperature of the last compressor, the inlet temperature of the first expander, the outlet temperature of the last expander and the polytropic efficiency of each compressor and expander are dependent variables of the known and unknown parameters; according to the relationship among the parameters, the compression power, the expansion power and the electric-to-electric efficiency are theoretically calculated, and the optimal scheme of the system performance of the advanced adiabatic compressed air energy storage is obtained in the shortest time cost and the least calculation cost.

This invention discloses a method for preparing and applying a high-efficiency fixed-wavelength reflective film for silicon-based power generation in the field of photovoltaic power generation enhancement materials. The method involves mixing and extruding a functional masterbatch made from cerium-yttrium modified magnesium fluoride-coated barium sulfate microspheres, cerium-zirconium modified rutile titanium-silicon composite microspheres, rutile titanium dioxide, precipitated barium sulfate, hollow glass microspheres, light calcium carbonate, maleic anhydride-grafted polyethylene, and high-density polyethylene resin. This masterbatch is then co-extruded and blow-molded with low-density polyethylene, ethylene-octene copolymer, silicone masterbatch, polytetrafluoroethylene, antioxidants, UV absorbers, light stabilizers, calcined kaolin, and oxidized polyethylene wax to form a film. The film is then embossed, corona-treated, and wound to obtain the final product. This reflective film exhibits high diffuse reflectance, weather resistance, wear resistance, and anti-aging properties, and can be used in medium to large-scale photovoltaic power plants to improve the power generation efficiency of silicon-based photovoltaic modules.

The application is suitable for power distribution automation technical field, especially relates to a primary and secondary fusion pole-mounted circuit breaker and a capacitor power supply parameter optimization method thereof, the method comprises the following steps: obtaining the measurement accuracy requirement level and the state of charge of the energy storage unit at the current time; determining the allocation proportion of the measurement time slot and the power taking time slot in a power frequency cycle according to the measurement accuracy requirement level and the state of charge; alternately configuring the measurement time slot and the power taking time slot in each power frequency cycle according to the allocation proportion; in the measurement time slot, shutting down the DC converter and collecting the voltage measurement value of the capacitor voltage division node; in the power taking time slot, enabling the DC converter and supplying power to the load and charging the energy storage unit. In the method, by dynamically allocating the proportion of the measurement time slot and the power taking time slot, the power taking efficiency is maximized under the premise of ensuring the voltage measurement accuracy, the energy storage state is considered, the problem that the existing technology cannot completely eliminate the influence of the power taking branch and increases the hardware cost can be solved.

The application provides a multi-power control device and system, and relates to the technical field of power supply.The multi-power control device comprises a control module and a plurality of power switching modules.Each power switching module comprises at least two switching units, and each switching unit corresponds to a different output channel.The control module is connected with the control end of each switching unit, and at least two switching units comprise a target unit.The control module is used for sending a first control signal to the target unit to drive the target unit to be turned on, so that the target unit corresponding output channel supplies power to the load.Based on this, the application can make up for the problem that the prior art lacks a control structure that can switch the output of multiple powers, realize fast and accurate multi-power switching output, and improve power supply efficiency.

The application relates to the field of power supply, and discloses a cascade connection power supply method and device of a mobile power supply and a storage medium. The method comprises the following steps: a second MCU module detects and judges the connection state of a second output end; when the second output end is connected with a power supply, the second power supply system is set as a slave system, data of a second battery module is periodically reported based on the second output end, and a control instruction input in the second output end is listened to; when the second output end is connected with a load, the second power supply system is set as a master control system, and operation parameters corresponding to a first power supply system and a second power supply system group are read to generate characteristic parameters; and according to the characteristic parameters, the first power supply system and the second power supply system select a target mode to supply power to the load, wherein the target mode comprises a parallel cooperative working mode and an independent power supply mode. In the embodiment of the application, fine management and cooperative output of the energy of multiple battery modules are realized, and the power supply efficiency and safety are improved.

The application relates to the technical field of material sorting equipment, and discloses an electrostatic sorting method and system based on a friction generator, which comprises a friction electrification device, is used for frictionally charging mixed materials to be sorted, and synchronously completes continuous feeding; the friction electrification device is connected with an electrostatic sorting device; a discharge port of the friction electrification device is in communication with a feeding port of the electrostatic sorting device; an electrode input end of the electrostatic sorting device is coupled with an output end of a voltage-boosting rectifier circuit, which is used for forming a stable high-voltage electrostatic field in the electrostatic sorting device; an input end of the voltage-boosting rectifier circuit is electrically connected with an electric energy output end of the friction generator; the application breaks away from the dependence of traditional electrostatic sorting on external high-voltage power supply, has the advantages of excellent human body safety, small energy consumption, low cost and easy integration, and solves the technical problems of low pre-charging efficiency and low material charge-to-mass ratio through the friction electrification device.

The present application relates to the technical field of wind power generation control, in particular to an event-triggered wind turbine sliding mode control method and system based on data driving, which calculates the error by real-time acquisition of actual and expected aerodynamic torque of the wind turbine, quantifies the error by a quantizer and restricts it to a preset range by a prescribed performance function, constructs a sliding surface function and a torque controller based on the equivalent error to generate a control signal, screens the control signal by an event-triggered mechanism, and iteratively optimizes until the error converges or the preset time is reached to maximize the power generation efficiency. This method has strong robustness under wind speed gradual change / mutation conditions, reduces communication volume through quantization and event-triggered mechanism, and achieves the collaborative optimization of power generation efficiency and communication energy consumption.

The application discloses a power-on control system and method of a vehicle and the vehicle. The method comprises the following steps: a power supply circuit is connected with a suspension system of the vehicle and used for supplying electric energy for the suspension system; an energy storage device is connected with an output end of the power supply circuit and used for exchanging energy with the suspension system; a current-limiting switching circuit is connected between the output end of the power supply circuit and the energy storage device and used for controlling a current value between the power supply circuit and the energy storage device; and a controller is connected with the current-limiting switching circuit and used for controlling a working state of the current-limiting switching circuit based on a voltage of the energy storage device. The application solves the technical problem of low power-on efficiency of the vehicle in the related art.

The application discloses a power control method, device and program product, and belongs to the technical field of computers. The method comprises the following steps: in the case that power supply information of a micro-grid does not satisfy a preset condition, determining a first target power according to the power supply information, the first target power being a target power required to be output by an energy storage module, the target power being reactive power or active power; and in the case that the first target power is less than or equal to a second target power, adjusting the target power output by the energy storage module according to the first target power, the second target power being a maximum target power that can be output by the energy storage module. When the load fluctuates and the energy storage module can independently consume the fluctuation caused by the load, only the output power of the energy storage module is adjusted, so that the power generation efficiency of a diesel generator module and the power supply quality can be ensured, and the power supply efficiency is improved. Moreover, the energy storage module can quickly respond to the control of the micro-grid and output stable power, and the energy scheduling speed of the micro-grid can be improved.

This invention provides a method for controlling the silent mode of a charging pile, a control unit, and a charging pile, relating to the field of charging pile technology. When preset conditions for entering silent mode are met, the method determines a target silent mode from a set of preset silent modes. Each silent mode corresponds to a power threshold and a speed. The method then determines the target power threshold corresponding to the target silent mode, configures the upper limit of the charging pile's output power as the target power threshold, and controls the actual output power of the charging pile to be less than or equal to the target power threshold. After determining that the actual output power is less than or equal to the target power threshold, the method determines the target speed corresponding to the target silent mode and adjusts the speed of the charging pile's fan to the target speed. Thus, through hierarchical control of the silent mode, both the need for quiet operation and charging efficiency are considered; and by reducing power first and then fan speed, the risk of temperature rise damage to power devices is reduced, achieving a silent effect matching the silent mode.

The application relates to the technical field of data processing, and discloses a super capacitor charging and discharging control method, a system and a storage medium. The method comprises the following steps: collecting voltage and current signals through a sensor, and obtaining initial data by using an analog-to-digital conversion technology; processing the signals by using a filtering algorithm, and extracting a characteristic point distribution sequence; judging potential drift and adjusting voltage offset according to a voltage offset amplitude and a load change weight; determining an internal resistance growth rate and a capacity attenuation curve by fitting an aging trend, and estimating residual capacity; adjusting a voltage reference point and a current threshold by combining a charging efficiency deviation value, and optimizing a charging process; and ensuring long-term stable operation of the super capacitor by updating control parameters. The application improves the efficiency and stability of the super capacitor charging and discharging process.

The application belongs to the technical field of wireless charging, and discloses a wireless charging method, a wireless charging system and a hearing aid device. A communication connection is established with a power receiving device, energy is output to the power receiving device to start a charging process, a switching frequency is adjusted within a preset frequency range, charging information reported by the power receiving device is received at each switching frequency, a charging efficiency value at each switching frequency is calculated based on the charging information of the power receiving device, a target switching frequency corresponding to the maximum charging efficiency value is determined, and the power receiving device is charged at the target switching frequency. By dynamically adjusting the switching frequency and optimizing the charging parameters according to the feedback of the power receiving device, the most suitable charging parameters for the current conditions can be found, and the best charging efficiency can be adaptively maintained in various scenarios such as different placement states, environmental changes and device aging.

The application relates to a combined electricity sales quantity prediction method, device, equipment and medium, wherein the method comprises the following steps: collecting power technology parameters, associated parameters and environment adaptation parameters in real time and preprocessing; taking the preprocessed power technology parameters, associated parameters and environment adaptation parameters as inputs, outputting a first sub-period electricity sales quantity prediction value by using an LSTM neural network, and introducing a power error penalty factor to impose an additional penalty on the peak-valley period prediction error in the LSTM neural network training process; taking the sub-period electricity sales quantity as an explained variable, the preprocessed associated parameters as core explained variables, and introducing a power grid power transmission efficiency, a transformer loss coefficient and an extreme weather influence coefficient as power regulation factors to construct a generalized additive model and output a second sub-period electricity sales quantity prediction value; and calculating a fusion weight, fusing the first and second sub-period electricity sales quantity prediction values, and obtaining a final electricity sales quantity prediction result. Compared with the prior art, the application has the advantages of high prediction accuracy.

The application discloses a kind of pneumatic wave energy generation device, belongs to wave energy generation technical field, to solve pneumatic wave energy generation device when using, in the conventional sea state of weak wave intensity, wave amplitude is smaller, device power generation efficiency is greatly reduced, power output is intermittent and unstable, simultaneously under extreme weather conditions, seawater level is easily rapidly raised and exceeds airflow passage height, causes electrical components short circuit, metal component corrosion damage, affect device service life problem, application includes inclined channel, one side of inclined channel is communicated with horizontal channel, radar liquid level meter is installed on the inner wall top of inclined channel, air pressure sensor is installed on the inner wall top of horizontal channel, the present application can be dynamically reduced when sea wave intensity is insufficient Chamber volume, shrink airflow passage cross-sectional area, improve the fluctuation amplitude of chamber air pressure and airflow kinetic energy, make up the defect that fixed volume chamber is poorly adapted, improve the power generation efficiency under low wave working condition.

The present specification relates to the technical field of power transmission, and discloses a photovoltaic high-voltage direct-current transmission method based on a current source type active commutation converter, to solve the problems of too high number of power conversion stages, too large power loss and low transmission efficiency of the current source type power transmission system in the existing power transmission system. The photovoltaic high-voltage direct-current transmission system of the current source type active commutation converter comprises, in sequence, a photovoltaic power supply module, a voltage boosting module, a high-voltage direct-current transmission module, a high-voltage active commutation module and a power transmission grid connection module; wherein the voltage boosting module comprises a low-voltage active commutation converter, a medium-frequency transformer and a high-voltage uncontrolled rectification bridge. The present application adopts a current source active commutation converter and a high-voltage uncontrolled rectification bridge on the low-voltage side, and can realize photovoltaic power generation maximum power tracking without an additional DC / DC converter, thereby reducing one level of power conversion, reducing switching loss, adopting an uncontrolled rectification bridge on the sending end high-voltage side, realizing unidirectional energy flow and reducing system cost.

This invention provides a power supply control system for supplying power to a load and includes a first power supply device, a second power supply device, and a buck converter. The first power supply device has a first output voltage and outputs a first output current to the load. The second power supply device has a second output voltage and outputs a second output current to the load. The buck converter selectively connects to either the first or second power supply device, and then connects in parallel with the unconnected power supply device and the load. Based on the first and second output voltages, the buck converter selectively connects to the power supply device with the higher output voltage, and controls the converter's output voltage to match the voltage of the other power supply device, thereby connecting the two power supply devices in parallel and outputting current to the load. The power supply control system provided by this invention can improve the endurance and power supply efficiency of the power supply device.

The application provides a fast charging circuit of an energy storage device and a charging method and a charger thereof, wherein the charging circuit comprises a forward conversion module, the forward conversion module outputs a first stable current or a second stable current to the energy storage device through a transformer; an energy storage capacitor is electrically connected to an output power supply of the forward conversion module, and the energy storage capacitor is electrically connected to the energy storage device through a control switch; when the output of the charging circuit is switched from the first stable current to the second stable current, the control switch is closed, the energy storage capacitor charges the energy storage device, so as to accelerate the switching process from the first stable current to the second stable current; the energy storage capacitor is electrically connected to an output port of the transformer, the output port of the transformer is allowed to be switched, so as to maintain the voltage of the energy storage capacitor at a preset voltage. The application can generate continuous current and high-quality pulse current, and the charging efficiency is high.

The application discloses a kind of high-conductivity aluminum alloy wire and preparation method thereof, including following weight percentage of element: B is 0.01-0.05%, Si is 0.1-0.3%, Fe is 0.1-0.25%, Zn is 0.01-0.05%, Tb is 0.001-0.005%, Ce is 0.005-0.02%, V is 0.001-0.005%, Ti is 0.001-0.005%, Zr is 0.01-0.05%, Er is 0.001-0.005%, the rest is Al;The beneficial effect of the application is: B and the compound formed by Si are dispersed in aluminum alloy matrix, effectively refine grain, reduce the influence of electron scattering on grain boundary, so as to significantly improve the conductivity of aluminum alloy wire, can effectively reduce the power loss of power transmission line, improve transmission efficiency;Tb, Ce, Er and other rare earth elements interact with Fe, Zn and other elements, improve the crystal structure of alloy, strengthen the grain boundary binding force, so that aluminum alloy wire has excellent tensile strength, elongation and fatigue life, can better adapt to complex power transmission environment, improve the reliability and stability of power transmission line.

This utility model discloses an energy meter with a multi-parameter acquisition and optimization circuit, comprising: a multi-dimensional sensing module, a parameter optimization bus, a real-time protection execution module, a collaborative communication module, an adaptive power supply module, and a dynamic compensation processor. The multi-dimensional sensing module is connected to the dynamic compensation processor via the parameter optimization bus. The dynamic compensation processor is connected to both the collaborative communication module and the real-time protection execution module. The adaptive power supply module is connected to the dynamic compensation processor, the parameter optimization bus, the multi-dimensional sensing module, and the collaborative communication module. This solution achieves accurate acquisition and processing of multiple parameters. Three-level current acquisition and hardware calibration technology significantly improve metering accuracy. The parameter optimization bus enhances signal transmission stability. Phase synchronous tripping extends relay life. Data compression reduces communication bandwidth usage. Energy recovery improves power supply efficiency, comprehensively enhancing the performance and reliability of the energy meter.

To increase electrical efficiency and enable cost-effective and reliable manufacturing, an optimized spoke design for a rotor (3) of an electric drive motor (1) is proposed, allowing the use of ferrite-based permanent magnets (5). The motor design is characterized by particularly delicate spokes (7), which allow for an increased magnet volume and thus the generation of high torques, especially when starting the motor (1), as required when the drive motor (1) is used as a lifting motor in an elevator system.

The present disclosure provides a chip power supply device, comprising a power distribution network, the power distribution network comprising an integrated power regulator and a decoupling silicon capacitor; the integrated power regulator is placed directly below a chip power supply device package substrate; the decoupling silicon capacitor is embedded in and / or embedded below the chip power supply device package substrate. By using the integrated power regulator and placing the integrated power regulator directly below the chip power supply device package substrate, the present disclosure realizes vertical power supply, embeds the decoupling silicon capacitor in and / or embeds the decoupling silicon capacitor below the chip power supply device package substrate, reduces the occupied area, improves the power supply efficiency, and reduces the chip power consumption.

This invention relates to the field of industrial robot fault diagnosis technology, and discloses a fault early warning and remote diagnosis method for the electrical control system of an industrial robot. This method obtains mechanical load parameters through a potential load model, an inertial load model, and a basic dynamic model; obtains electrical state parameters through an electrical efficiency model; generates correction factors through a correction model based on ambient temperature; calculates dynamic current thresholds through a threshold model based on the correction factors and a basic current threshold; and finally outputs health scores and fault early warning information through a diagnostic model by combining vibration acceleration and servo loop following error. This invention integrates multi-source parameters from mechanical, electrical, and environmental sources to achieve dynamic threshold adjustment and multi-dimensional health assessment, effectively distinguishing between normal operating conditions and abnormal states, significantly improving the accuracy of fault early warnings, reducing false alarm rates, and providing a reliable remote diagnosis solution for industrial robots.

The application provides a front discharge electrode group and a gas particle purification machine, the front discharge electrode group comprising at least one discharge beam connected with a direct current power supply, the discharge beam comprising a plurality of metal wires and / or conductive non-metal wires. The discharge beam comprises more than 0.1 ten thousand metal wires and / or conductive non-metal wires; the metal wires comprise at least one of stainless steel fiber wires, titanium-chromium-aluminum alloy wires, titanium alloy wires and nickel alloy wires. The front discharge electrode group of the application is similar to a brush, adopts corona discharge, the tip of each fiber wire of the free end is a discharge point, the discharge effect is significantly improved, the charging efficiency of particles in the gas is improved, and the generation of ozone is effectively reduced to almost none.

A semiconductor structure and a forming method thereof, the semiconductor structure comprising: a bottom dielectric layer, comprising a first dielectric layer and a second dielectric layer located on the first dielectric layer, a plurality of interconnection layers are formed in the first dielectric layer, comprising spaced first and second interconnection layers, a conductive plug is formed in the second dielectric layer and in contact with the first interconnection layer; a top dielectric layer located on the bottom dielectric layer; a first metal line penetrating through the top dielectric layer and in contact with the conductive plug, the first metal line serving as a signal line; a second metal line penetrating through the second dielectric layer and the top dielectric layer and in contact with the second interconnection layer, the second metal line serving as a power supply line, so that the power supply line and the second interconnection layer are electrically connected without the conductive plug, which is conducive to preventing the influence of the resistance of the conductive plug on the electrical connection performance between the power supply line and the second interconnection layer, optimizing the electrical connection performance between the power supply line and the second interconnection layer, reducing the IR drop, and improving the power supply efficiency of the device.

This invention discloses a power generation system for a PEMFC fuel cell, belonging to the field of natural gas hydrogen production technology. The power generation system of this invention includes a methanol-water hydrogen production module, a CO deep purification module, a gas regulation module, a compatible PEMFC stack, and an intelligent control module connected in sequence. Unlike the traditional pure hydrogen system's "hydrogen production-purification-compression-power generation" structure, it eliminates PSA purification and pure hydrogen compression steps, reducing system construction and fuel costs. Furthermore, it reduces several core devices, simplifies the structure, and shrinks the system size, making it suitable for vehicle-mounted and portable power supply scenarios. Through flow channel optimization and pressure regulation, the power generation efficiency reaches 92%~95% of traditional systems, and even after 2000 hours of continuous operation, the performance degradation rate remains less than or equal to 5%. In addition, the CO2 in the hydrogen-rich gas mixture is an inert gas, which can reduce the risk of combustion and explosion in the event of hydrogen leakage.

This invention relates to the field of electronic technology and discloses a surge suppression circuit and power supply, comprising: a control module that matches the control voltage to the initial voltage value of the switching circuit based on the first voltage signal of the first sampling circuit, thereby keeping the switching circuit in the off state and preventing the destructive impact of large current at the moment of power-on from the source; then gradually reducing the control voltage to drive the switching circuit into the variable resistance region to achieve current limiting; simultaneously, calculating the actual current of the circuit in real time through the second voltage signal of the second sampling circuit and dynamically comparing it with the maximum surge current setting value; when the difference reaches the preset value, immediately fixing the control voltage to fully turn on the switching circuit. This closed-loop logic allows the surge suppression process to adaptively adjust with changes in the actual current, effectively limiting the surge current to a safe range while avoiding the problem of slow power-on caused by traditional fixed current limiting methods, achieving a dual balance between surge suppression effect and power-on efficiency.

The utility model relates to a dry -type transformer of adjustable number of turns relates to electric power equipment technical field, including base, lower mounting bracket, upper mounting bracket, first magnetic core, second magnetic core, access primary coil, self -variable secondary coil and pressure regulating component, lower mounting bracket sets up on the base, first magnetic core second magnetic core sets up on the lower mounting bracket, upper mounting bracket sets up on first magnetic core and second magnetic core, access primary coil sets up on first magnetic core, self -variable secondary coil sets up on second magnetic core, the pressure regulating component includes installation department and adjusting part, installation department sets up on second magnetic core, self -variable secondary coil has a plurality of output parts along its axial arrangement, adjusting part slidingly sets up on installation department, the sliding of adjusting part can be in turn with output part electricity is connected, the utility model discloses can pass through adjusting component, can reduce the electric energy loss among power transmission line, and voltage regulation is helpful to improve power transmission efficiency.