21results about How to "Stable power" patented technology

The application belongs to the field of vehicle-mounted refrigerators, and discloses a dual-temperature cooperative acquisition circuit, an intelligent temperature measurement method and a vehicle-mounted refrigerator, which comprise: a synchronous acquisition unit, which is used for synchronously acquiring temperature signals of at least two target regions of the vehicle-mounted refrigerator and outputting corresponding temperature analog signals; an anti-interference processing unit, which is connected with the output end of the synchronous acquisition unit and is used for filtering various interference signals in the vehicle-mounted environment; an adaptive signal conditioning unit, which is connected with the output end of the anti-interference processing unit and is used for adaptively amplifying, filtering and linearizing the temperature analog signals; a main control unit, which is connected with the output end of the adaptive signal conditioning unit and is used for digitizing the temperature signals, performing algorithm operation and logical control; and a wide-adaptive power supply unit, which is connected with the synchronous acquisition unit, the anti-interference processing unit, the adaptive signal conditioning unit and the main control unit and is used for providing a stable working voltage that is adapted to the vehicle-mounted power supply.

The invention relates to the technical field of power system load management, and discloses a multi-element load collaborative optimization regulation and control method, which comprises the following steps: acquiring multi-element load data through a monitoring and data acquisition device, and representing a multi-element load nonlinear regulation behavior; a core optimization variable is determined by adopting a quasi-inverse Harris eagle optimization algorithm, a regulation and control scheme on that day is updated in combination with a historical scheme, real-time data, electricity price and load prediction, and the QOHHO algorithm gives consideration to nonlinear characteristics of multiple loads and communication delay; a single-step improved QOHHO algorithm is adopted to generate a day-ahead regulation and control plan; and in consideration of the power exchange penalty cost caused by the load deviation, modeling communication delay by adopting a preset method, and compensating a load adjustment dead zone and a rate constraint deviation through the optimized TDOF controller. The method is applied to the power distribution network containing high-proportion renewable energy sources, collaborative optimization scheduling of industrial, commercial and resident multi-element loads is achieved, and the power balance capacity, the renewable energy source consumption rate and the operation economy of the power grid are improved.

An optimization method for stabilizing photovoltaic (PV) power generation fluctuations using distributed energy storage based on scenario sets is proposed. This method establishes a dispatchable capacity model for distributed energy storage based on its physical characteristics; establishes node voltage constraints and branch transmission capacity constraints for the distribution network; introduces reactive power regulation equipment to establish a dispatchable reactive power support range; and maintains power and voltage stability through distributed energy storage and various reactive power regulation devices while considering branch transmission capacity constraints. Finally, a coordinated optimization model for distributed energy storage based on PV power generation prediction scenarios is established. This invention prioritizes the basic safety of the distribution network and can be well applied to cities with abundant solar resources. By equipping distributed energy storage and certain reactive power regulation devices, it alleviates power and voltage fluctuations caused by intermittent PV power generation, thereby improving grid operational stability, reducing economic costs, and conserving resources.

The utility model discloses a motor load simulation device. The device comprises a shielding darkroom; the torque rotating speed sensor is arranged in the shielding darkroom; the left half coupling and the right half coupling are respectively provided with a through hole, the left half coupling is connected with the torque rotating speed sensor, and the right half coupling is used for connecting a power shaft of a motor to be tested; column bodies are arranged on the two sides of the disc-shaped transmission part, and the column bodies are inserted into the through holes of the left half coupling and the right half coupling respectively; the dynamometer is arranged in the shielding darkroom; the dynamometer and the torque rotating speed sensor are connected through a second coupler. And the torque rotating speed power measuring instrument is connected with the torque rotating speed sensor and is arranged outside the shielding darkroom. In the device, a disc-shaped transmission part is arranged between the left half coupling and the right half coupling of the first coupling, so that electromagnetic signals generated by the dynamometer and the torque rotating speed sensor are physically isolated from the motor to be tested, and the electromagnetic compatibility test result of the motor is prevented from being influenced.

The application discloses a floating offshore wind power device, which comprises a wind power mechanism and a floating foundation platform; wherein the floating foundation platform comprises a central column and a plurality of side columns which are arranged around the outer side of the circumference of the central column, and the central column and the side columns are fixedly connected through connecting assemblies; the wind power mechanism is fixedly connected to the upper end of the central column, and is used for converting offshore wind energy into electric energy; the lower end of each side column is fixedly connected with two heave plates which are arranged in an up-down mode, and the two heave plates have a preset distance in the vertical direction. The application can effectively reduce the motion response amplitude of the floating foundation platform, so as to ensure that the wind power mechanism can maintain stable wind power generation power and structural safety.

This invention discloses a fast dynamic tracking method and system for radio frequency power supply frequency tuning. The method includes: S1 generating a frequency-modulated signal based on the carrier frequency and the modulation signal frequency; S2 coupling and sampling the radio frequency signal after power amplification of the frequency-modulated signal to extract three frequency components: a first frequency component, a second frequency component, and a third frequency component; S3 calculating the reflection coefficient amplitude values ​​at the corresponding frequency points of the three frequency components; S4 calculating the slope using the first and third reflection coefficient amplitude values; S5 calculating the frequency tuning step using the slope and the second reflection coefficient amplitude value; S6 tuning the carrier frequency based on the frequency tuning step to obtain the tuned carrier frequency; and S7 cyclically executing steps S1-S6 to output the optimal frequency. This invention provides accurate tuning direction determination, adaptive and adjustable step size, fast convergence speed, high frequency resolution, and the ability to rapidly and dynamically track changes in plasma load.

The invention discloses an intelligent electromagnetic balance energy-saving system, and relates to the technical field of intelligent power grids. According to the system, power grid operation data are collected and preprocessed into per unit values, equivalent reactance and the total reactive power vacancy of the system are calculated according to the per unit values, then the rated capacity of a reactive compensation device is combined, the reactive power vacancy of an inverter is calculated, inverter operation data and current collection line parameters are obtained, and first reactive power and second reactive power are obtained through preset operation; and finally, the bus voltage and the system power factor of the transformer after control are collected again, and an adjusting instruction is judged and generated according to the bus voltage and the system power factor. Reactive power compensation of the inverter is realized, output of the inverter is controlled to be optimal, influence of electromagnetism on a power grid is reduced, stability of voltage and power factors of the power grid is ensured, a control strategy can be automatically adjusted according to closed-loop design, and stability of the power grid and operation efficiency of the inverter are improved.

The application discloses a kind of radio frequency power frequency tuning fast dynamic tracking method and system.The method comprises the following steps: S1 generates frequency modulation signal based on carrier frequency and modulation signal frequency;S2 is coupled and sampled to the radio frequency signal after the power amplification of the frequency modulation signal, and three frequency components, namely first frequency component, second frequency component and third frequency component, are extracted;S3 respectively calculates the reflection coefficient amplitude value at the corresponding frequency point of the three frequency components;S4 calculates the slope using the first reflection coefficient amplitude value and the third reflection coefficient amplitude value;S5 calculates the frequency tuning step using the slope and the second reflection coefficient amplitude value;S6 tunes the carrier frequency based on the frequency tuning step to obtain the tuned carrier frequency;S7 cyclically executes steps S1-S6, and outputs the optimal frequency.The application is accurate in tuning direction judgment, adaptive in step, fast in convergence speed, high in frequency resolution, and can quickly and dynamically track the change of plasma load.

The invention discloses a power buffering system and method for high-power bidirectional wireless charging equipment, and relates to the technical field of wireless power transmission. According to the device, a super capacitor module and a power optimization controller are integrated on a receiving side, a high-power energy transfer buffer algorithm is carried, a super capacitor serves as an electric energy buffer of an energy storage battery of the device, the electric quantity of the battery and the charging and discharging power are stabilized, and high-power electric energy interaction between global power grids is achieved. And a DCDC output path is improved and designed, so that the problem of insufficient voltage of the super capacitor in a low-electric-quantity working condition is solved. According to the equipment, the problem that the battery is damaged by high-power charging when the battery is fully charged and high-power discharging when the battery is low can be solved, and the damage to the battery caused by over-charging, over-discharging, high-power charging and discharging and the like is reduced.

The invention discloses a virtual synchronous machine comprehensive control method based on optimal power compensation and inertia damping self-adaption, and belongs to the technical field of virtual synchronous machine control in a micro-grid. The method comprises the following steps: firstly, establishing a mathematical model of a virtual synchronous machine (VSG), analyzing the influence of parameters such as virtual inertia and virtual damping on system stability, and realizing online adaptive adjustment of virtual parameters based on a radial basis function neural network (RBF); and then, constructing a discretization prediction model according to an active-frequency relation of the VSG, setting an optimization target based on angular frequency deviation and output active power, designing a corresponding cost function, and solving an optimal power compensation amount through quadratic programming so as to adjust an active reference value of the VSG in real time. Compared with the prior art, overshoot and oscillation of power and frequency can be effectively restrained, the frequency change rate and deviation are reduced, and the power frequency response speed is increased.

This invention relates to the field of integrated layout and environmental safety control technology for electrochemical energy storage systems, proposing an all-vanadium redox flow battery system for underground space deployment and its environmental control method. The system includes modular cabin units, comprising a fuel cell stack cabin, an electrical cabin, and a liquid storage chamber. The fuel cell stack cabin connects the main exhaust channel (exhaust fan, anti-backflow components) to the controlled gas supply channel (filter assembly, electrically adjustable gas supply valve, pressure stabilizer), and is equipped with a pressure relief channel and a pressure release valve. A differential pressure measurement unit and a constant current sampling unit are configured to output the static pressure difference between the inside and outside of the cabin, gas concentration, and sampling validity. The main controller identifies disturbance conditions based on sampling validity and differential pressure change rate, and switches between pressure stabilization closed-loop and graded linkage control. Through gas path decoupling, reliable sampling, and coordinated anti-disturbance control, the system can reduce pressure difference and concentration distortion caused by ventilation / supply air disturbances in underground parking garages, reduce false triggering, missed triggering, and frequent oscillations, and improve system operational safety and control stability.

This invention relates to the field of coal-to-methanol production equipment technology, and more particularly to a distillation column for separating crude methanol by-products from coal-to-methanol production. The column includes a pre-distillation column, a pressurized distillation column, and an atmospheric distillation column. An energy-saving control device is installed between the pressurized and atmospheric distillation columns. The power control device controls the steam output of the pressurized distillation column, and then valve two controls the liquid phase distribution to the atmospheric distillation column, thereby achieving equilibrium and effectively saving energy. A temperature compensation device is installed between the pressurized distillation column and the reboiler. This device includes a heat storage body installed on pipeline two, with an insulation layer outside the heat storage body. A temperature sensor is installed near the end of the heat storage body. The heat storage body can store heat when the steam flow is high, thus stabilizing the power of the reboiler and providing a buffer time for delayed feedback control, ensuring stable operation of the three columns.

The utility model discloses a high pressure spraying equipment of wet type dust removal belongs to spraying dust removal technical field, and its technical scheme main points include bottom plate, both sides of bottom plate top rear side all have the fixed block of shuanchang, the inside of fixed block is provided with telescopic link, the top of telescopic link is provided with angle regulation spraying assembly, the top of bottom plate is provided with constant pressure stabilization subassembly, angle regulation spraying assembly includes two mounting plates, and the bottom of two mounting plates respectively with corresponding telescopic link top shuanchang, has solved the existing spraying dust removal equipment mostly fixed installation, faces different height's spraying dust removal, cannot nimblely apply, on the other hand, the angle of spraying is mostly fixed and cannot very good angle adjustment of dust removal spraying for the source of dust, also cannot swing back and forth through the spraying head and increase the area of dust removal water mist, and when facing the problem that the water pressure of spraying is not stable, cannot carry out effective adjustment.

The invention relates to the technical field of air conditioners, and provides an oil return control method and device of a solar air conditioner and an air conditioning system.The method comprises the steps that when the solar air conditioner is in a low-frequency running state, whether a preset oil return triggering condition is met or not is judged; when conditions are met, the current oil temperature of refrigerant oil is obtained; when the oil temperature is smaller than a preset oil return temperature threshold value, a stepped frequency increasing strategy for the compressor to enter an oil return mode is determined, and the compressor is controlled to operate according to the stepped frequency increasing strategy; and if the solar power supply system does not meet the power required for maintaining the operation of the stepped frequency raising strategy, triggering the multi-energy complementary machine. The compressor is controlled to gradually increase the frequency according to the stepped frequency increasing strategy, so that the frequency of the compressor is in smooth transition, transient load impact in the oil return process is buffered, stable operation of the compressor is guaranteed, and the service life of an air conditioning system is prolonged; and auxiliary energy is introduced through a multi-energy complementary mechanism for power compensation, stable power supply in the oil return process is guaranteed, and then the operation reliability of the system is improved.

This disclosure relates to a method, device, medium, and vehicle for monitoring boost charging power. The method includes: acquiring real-time power during continuous charging; determining power fluctuations based on the real-time power; determining whether a single power fluctuation exceeds a preset power fluctuation value and the number of consecutive occurrences exceeds a first preset number of occurrences based on the power fluctuations; and identifying the maximum available power when a single power fluctuation exceeds the preset power fluctuation value and the number of consecutive occurrences exceeds the first preset number of occurrences. Based on this, a method for identifying power oscillations during boost charging is provided, enabling the identification of potential power oscillations during charging, thereby facilitating further power stabilization, mitigating the impact of power oscillations on the charging system, and extending the service life of the charging pile.

The application provides a device and method for removing residual adhesive layer of a flat wire stator of a vehicle. The device comprises a control processing module, a carbon dioxide laser, a beam splitter, a beam expander, a galvanometer and a field lens connected in sequence. The method comprises the following steps: clamping and fixing the flat wire stator at a predetermined position; starting the carbon dioxide laser to emit carbon dioxide laser with a center wavelength of 10.6 microns, which sequentially passes through the beam splitter, the beam expander, the galvanometer and the field lens, and is incident on the end face of the flat wire stator at an oblique angle to gasify the residual adhesive layer; operating the galvanometer to remove the residual adhesive layer; and removing the flat wire stator. The application can avoid damage to silicon steel sheets caused by manual removal of the residual adhesive layer and burning of the trace two-dimensional code during removal of the residual adhesive layer, and realizes efficient removal of the residual adhesive layer and stable laser power.

The application discloses a series hybrid electric vehicle energy management method based on event-triggered multi-target MPC, and belongs to the technical field of hybrid electric vehicle energy management and motion control. Firstly, a power system and a dynamics system of the vehicle are modeled, and the obtained mathematical model is used as a prediction model of multi-target MPC. Then, according to a control target, a suitable optimization target function and system constraints are selected to construct a multi-target MPC constraint optimization problem. The system state at the current time is sampled, a finite time domain multi-target MPC constraint optimization problem is constructed and solved, and the optimal control sequence predicted at the current time is obtained, and the first s optimal controls are applied to the vehicle system. Finally, an event-triggered mechanism is designed, the new system state is obtained at a new triggering time, and the multi-target MPC constraint optimization problem is updated, and the rolling iteration is performed until the control process is finished. The application guarantees the stability of the power battery pack and the engine power of the series hybrid electric vehicle, and the calculation efficiency of the optimization problem is higher.

The utility model relates to a kind of radio frequency power amplification circuit, belong to radio frequency power amplifier technical field, solve the problem that radio frequency power amplifier in prior art is difficult to stabilize output certain power under different temperature changes.The radio frequency power amplification circuit includes: detection circuit, for receiving coupling signal and carrying out temperature compensation to coupling signal, obtains detection signal;High gain amplification circuit, for receiving detection signal and carrying out gain amplification to detection signal, obtains detection amplification signal;Power setting circuit, for according to detection amplification signal and pre-set threshold voltage output control signal to electrically-controlled attenuator.It is realized that radio frequency power amplifier stabilizes output certain power under different temperature changes.

The invention provides a power self-locking system, a power self-locking method and a fiber laser bi-pass amplification device. According to the power self-locking system, the power self-locking method and the optical fiber laser bi-pass amplification device, three hundred watts laser in hundred femtosecond magnitude can be output, and meanwhile, the compact laser layout is achieved. The laser has the advantages of simple and compact structure, low cost, one-way laser output, narrower pulse width, higher beam quality and the like, can be widely applied to the fields of national defense and military industry, biomedical treatment, laser processing, scientific research and the like, and has good application prospects and commercial values.

The invention discloses a Raman reflector large-angle control and calibration device which comprises a Raman laser light source, a 2 * 2 optical fiber coupler, a Raman collimating lens group, a 1 / 4 wave plate, a Raman reflector I, a Raman reflex lens group, a magneto-optical trap device, a 1 / 4 wave plate II and a Raman reflector II, wherein the Raman reflex lens group, the magneto-optical trap device, the 1 / 4 wave plate II and the Raman reflector II are arranged in an atomic gravimeter structure frame; the invention further discloses a control and calibration method. The method is suitable for the precision and the accuracy of the overlap ratio of the light wave vector reflected by the Raman light and the Raman light at a large angle, and the dynamic environment adaptability of the atomic gravimeter can be greatly improved.

The application discloses a network-constructing converter control method, system, device and medium, and belongs to the technical field of converter control. The method is as follows: determining a reference current according to real-time inductance current and real-time capacitance voltage of a linear virtual oscillator, and active power reference value and reactive power reference value of a target converter; obtaining real-time alternating current of the target converter to determine a given current; obtaining instantaneous inductance current and instantaneous capacitance voltage of the linear virtual oscillator according to the given current to determine a frequency locking direction; obtaining a target capacitance value according to the frequency locking direction and total current of the linear virtual oscillator to obtain adjusted inductance current and adjusted capacitance voltage of the linear virtual oscillator; and obtaining a voltage modulation reference value of the target converter to control the target converter. Therefore, the application can solve the technical problems of complex and unstable network-constructing converter control in the prior art, and realizes efficient control of the converter.