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49results about How to "Stable output power" patented technology

AGC frequency modulation control method, system and device based on lithium battery energy storage system and medium

The invention relates to the technical field of power grid frequency modulation, in particular to an AGC frequency modulation control method, system and device based on a lithium battery energy storage system and a medium, and the method comprises the steps: collecting the operation data of a thermal power generating unit and a lithium battery energy storage device in real time, determining an AGC instruction according to the operation data, and obtaining the frequency of a power grid; determining a control signal for power adjustment of the thermal power generating unit according to a power target value and actual generator power in the AGC instruction; adjusting the output power of a generator in the thermal power generating unit by adopting a set control strategy according to the control signal; and according to the power grid frequency deviation, the AGC instruction and the operation states of the unit and the lithium battery energy storage equipment, dynamically adjusting the power distribution proportion of the lithium battery energy storage and the thermal power unit until the power grid frequency modulation requirement is met. The method can maximize the regulation capability of the energy storage system.
Owner:HUANENG TAICANG POWER GENERATION CO LTD +1

Control method and control system of frequency conversion device and air conditioner

PendingCN119628477ASolve the problem of insufficient temperature controlReduced problems of inadequate temperature controlElectric motor controlAC motor controlTemperature controlControl manner
According to the control method and control system of the frequency conversion device and the air conditioner, under the condition that the temperature data exceeds the first temperature threshold value, the dead zone time and / or the minimum opening time of the frequency conversion device are / is dynamically adjusted, effective control over the temperature of the frequency conversion device is achieved, and the service life of the frequency conversion device is prolonged. The problem that the temperature of the frequency conversion device is not properly controlled in the prior art is solved. Specifically, the method can effectively reduce the switching frequency and continuous turn-on duration of switching devices such as an IGBT (Insulated Gate Bipolar Transistor) and the like in a mode of timely increasing the dead time and the minimum turn-on time, thereby reducing the calorific value of the switching devices, reducing the turn-on and turn-off loss, and avoiding performance reduction or device damage caused by overhigh temperature. Meanwhile, the control mode does not change the carrier frequency, so that the response speed and the control precision of the system are not influenced, the stable output power of the frequency conversion device is ensured under severe working conditions, and the reliability and the service life of equipment are improved.
Owner:GREE ELECTRIC APPLIANCE INC OF ZHUHAI

Wind speed self-adaptive triboelectricity-electromagnetic induction hybrid wind-driven generator based on inertia driving conversion mechanism and operation steps of wind-driven generator

The invention relates to the technical field of wind power utilization, in particular to a wind speed self-adaptive triboelectricity-electromagnetic induction hybrid wind-driven generator based on an inertia driving conversion mechanism, which comprises a base, an induction power generation structure, a planetary gear structure, a friction rotor structure, a friction stator structure and a wind power conversion mechanism, the induction power generation structure is located above the base and connected with the base in a clamped mode, the planetary gear structure is located above the induction power generation structure, the friction rotor structure is connected with the induction power generation structure and the base in a clamped mode, the friction rotor structure surrounds the planetary gear structure, and the friction stator structure surrounds the friction rotor structure. The wind power conversion mechanism penetrates through the friction stator structure and is fixedly connected with the planetary gear structure. The wind energy collecting device has the efficient wind energy collecting effect.
Owner:JILIN UNIVERSITY

DC bias voltage control device and control method, electronic equipment and storage medium

InactiveCN119472911AStable output powerStable etch rateElectric variable regulationWaferingControl theory
The invention discloses a direct current bias voltage control device and control method, electronic equipment and a storage medium. The direct current bias voltage control device comprises an electrostatic chuck which adsorbs a wafer; a lower radio frequency power supply and a lower matcher, wherein the lower radio frequency power supply is connected with the lower matcher; the voltage sensor is arranged at the bottom of the electrostatic chuck, the voltage sensor is connected with the electrostatic chuck and the lower radio frequency power supply, and the voltage sensor obtains a voltage signal of the electrostatic chuck to the ground, converts the voltage signal into an analog quantity voltage signal and transmits the analog quantity voltage signal to the lower radio frequency power supply; the lower radio frequency power supply processes the received analog quantity voltage signal to obtain a direct current bias voltage, the direct current bias voltage is compared with a preset voltage value, and the output power of the lower radio frequency power supply is adjusted to enable the direct current bias voltage to be equal to the preset voltage value. According to the invention, the output power is stable and does not fluctuate greatly, reliable power output is provided, and adverse effects on a process result are avoided.
Owner:ADVANCED MATERIALS TECH & ENG INC +1

Power amplifier module

The invention relates to the technical field of wireless communication, and provides a power amplifier module which comprises an input matching circuit, a first-stage amplifier, a first inter-stage matching circuit, a second-stage amplifier, a second inter-stage matching circuit, a third-stage amplifier and an output matching circuit which are electrically connected in sequence. The output matching circuit is connected to a load; the power amplifier further comprises a control module and a direct-current power supply module. The direct-current power supply module is used for supplying power to the control module, the first-stage amplifier, the second-stage amplifier and the third-stage amplifier. The input end of the control module is used for receiving an external logic enable signal and controlling the direct-current power supply module to provide direct-current bias voltage for the first-stage amplifier, the second-stage amplifier and the third-stage amplifier according to the external logic enable signal. The power amplifier module can improve the PVT index performance of the power amplifier and improve the communication quality.
Owner:FEIXIANG TECH (WUXI) CO LTD

Permanent magnet motor suitable for oilfield pumping equipment

The utility model relates to permanent magnet motor technical field, concretely relates to a kind of permanent magnet motor suitable for oilfield pumping equipment, including speed reducer, the input end of speed reducer is fixedly connected with input shaft, the outside of one end of input shaft is fixedly connected with shaft sleeve, the outer wall of shaft sleeve is fixedly connected with rotor iron core, the outer wall of rotor iron core is fixedly connected with multiple equidistance evenly distributed permanent magnet, the outer wall of speed reducer near input shaft is fixedly connected with mounting flange, the side wall of mounting flange is provided with front end cover, and the side wall of front end cover is provided with machine shell.Compared with prior art, after the structure design of increasing air gap is used, even if slight axial displacement or radial swing occurs in the running process of rotor iron core, the interference between permanent magnet and stator iron core can be effectively avoided, and the reliability and adaptability of motor under high impact, high vibration working condition are improved.
Owner:SHENGLI OILFIELD SHUNTIAN PETROLEUM TECH CO LTD

Rotor magnetic ring and frameless motor

The utility model discloses a rotor magnetic ring and a frameless motor, the rotor magnetic ring comprises m magnetic circuit splicing blocks which are annularly and sequentially spliced, the m magnetic circuit splicing blocks are divided into n first splicing blocks, each first splicing block is provided with a first inner cambered surface and a first outer cambered surface, and the chord length of the first outer cambered surface is greater than that of the first inner cambered surface; each second splicing block is provided with a second inner cambered surface and a second outer cambered surface, the chord length of each second outer cambered surface is smaller than that of each second inner cambered surface, and m is larger than or equal to 2 and equal to 2n; the side waists of the first splicing blocks abut against the side waists of the second splicing blocks, and the first splicing blocks and the second splicing blocks are arranged in a staggered mode in the circumferential direction. When the rotor magnetic ring is applied to the frameless motor, a magnetic conductive ring is equivalently canceled, so that the overall size of the frameless motor is obviously reduced, and the difficulty of manually assembling the frameless motor is reduced.
Owner:CHINA LEADSHINE TECH CO LTD +1

Load adjusting system and method of photovoltaic power generation network

The invention provides a load regulation system and method for a photovoltaic power generation network, and the method comprises the steps: extracting an active power feature and a reactive power feature in the photovoltaic power generation network from nonlinear load power, and determining a compensation relation between the reactive power and the active power in the photovoltaic power generation network through the reactive power feature; determining power loss characteristics during nonlinear fluctuation of the load according to the compensation relation and the active power characteristics; extracting a stationary feature of the linear load power, and performing balance prediction on the load power according to the stationary feature and a linear relationship between supply power and load demand in the linear load power to obtain a load balance value of the photovoltaic power generation network; and performing loss compensation on the load balance value by using the power loss characteristic to obtain a balance parameter value of the load power in the photovoltaic power generation network, and performing balance adjustment on the output power of the photovoltaic power generation network based on the balance parameter value of the load power. Based on the scheme, balance adjustment of the output power in the photovoltaic power generation network can be realized.
Owner:DONGGUAN GUANNENG GREEN ENERGY SERVICE CO LTD

Wind power plant

The utility model relates to wind power generation technical field discloses wind power generation device, including support subassembly, wind wheel subassembly and power generation subassembly, wind wheel subassembly includes main shaft and impeller, and the main shaft fixed mounting is in support subassembly, and the impeller rotatablely installs on the main shaft, power generation subassembly includes first power generation unit and second power generation unit, and the stator of first power generation unit and second power generation unit all fixed mounting is in main shaft, and the outer rotor of first power generation unit and second power generation unit all are connected with the impeller fixedly, the utility model under the same wind force condition, first power generation unit and second power generation unit can work simultaneously, and the mechanical energy of impeller capture is more efficient, more fully converts into electric energy, effectively increases the overall power generation, improves the wind energy utilization efficiency and power generation efficiency, solves when the outside wind speed is at the low level, and the overall power generation of generator is insufficient.
Owner:YUANGONG ENERGY TECH GRP CO LTD +1

A gas turbine combustor gas-liquid dual fuel mixed combustion test system and a working method thereof

The present application relates to the field of gas turbine, in particular to a gas turbine combustion chamber gas-liquid dual fuel mixed combustion test system and working method thereof, comprising: a combustion cavity unit, a combustion state monitoring unit, a liquid fuel supply unit, a gas fuel supply unit, a main air supply unit and a central control unit; the combustion cavity unit comprises a test shell, a flame tube, a dual fuel nozzle and an igniter, the flame tube is installed in the inner cavity of the test shell and is fixed by the head and tail support. The present application sets up a test system by setting a dual fuel nozzle and a flame tube in a unique test shell, and configuring an igniter, a pressure pulsation sensor and other structures, combined with a central control computer to ensure that the combustion chamber outlet temperature remains unchanged, through precise control of the gas fuel and liquid fuel flow, the dual fuel mixed combustion characteristic curve under each working condition is automatically obtained.
Owner:NO 703 RES INST OF CHINA SHIPBUILDING IND CORP

A synchronous boost power supply control circuit

The present invention provides a synchronous boost power supply control circuit: comprising a power management unit U1, field effect tubes Q1-Q2, capacitors C1-C7, resistors R1-R7, diodes D1-D4, and inductors L1-L2; the main purpose of the invention is to provide a 100W synchronous boost and dual-cell lithium battery charging management circuit with an external power tube, supporting 5V USB input to charge dual-cell lithium batteries, and the maximum charging current at the battery end reaches 1.2A.
Owner:SHENZHEN APEMAN INNOVATIONS TECH CO LTD

Alarm device and alarm system

The utility model provides an alarm device and an alarm system with an internal power supply module, the alarm device comprises a base, a function part and the internal power supply module, the function part is arranged on the base, the function part comprises a wireless communication module, a control module and an alarm module, the wireless communication module is configured to be capable of receiving external start-stop signals, and the control module is configured to be capable of controlling the alarm module. The control module communicates with the wireless communication module, the alarm module communicates with the control module, and the control module is configured to control the alarm module to send out an alarm signal according to the start-stop signal. The internal power supply module comprises a primary battery, and the primary battery is electrically connected with the control module, the wireless communication module and the alarm module. According to the embodiment of the utility model, the operation of the alarm device can be maintained for a long time under the condition that the external power supply is powered off, the applicability and the stability of the alarm device in an emergency are improved, the requirement of the alarm device on an external power supply is reduced, and the alarm device can normally operate for a long time even if the alarm device is not connected to the external power supply.
Owner:BEIJING VITALSAFE EQUIP CO LTD +1

Bilateral LC Compensated ECPT System Based on Parity-Time Symmetry and Its Design Method

The present invention proposes a bilateral LC compensation ECPT system based on parity-time symmetry and a design method thereof, the system includes a primary transmitting circuit and a secondary receiving circuit, the parameters of the system are configured to make the system work in a floating frequency real eigenstate; the primary transmitting circuit also includes a negative resistance gain circuit, and the negative resistance gain circuit is equivalent to a negative resistance whose absolute value is equal to the load value. The present invention introduces the parity-time symmetry principle into the system, configures the system parameters to make the system work in a floating frequency real eigenstate, and configures the resistance gain circuit to make the system gain and loss balance in the floating frequency real eigenstate. At this time, the system can self-oscillate, and the oscillation frequency is adaptively adjusted as the system parameters change. That is, when the plate is offset or the distance between the plates changes, even if the self-capacitance and mutual capacitance change, the system operating frequency is still at the resonant frequency, and the energy efficiency will not be reduced at this time, and the output power will maintain a stable value.
Owner:CHINA UNIV OF MINING & TECH +1

Novel battery box

The utility model discloses a novel battery box which comprises a battery box main body, a battery mounting cavity is arranged on the battery box main body, and a positive electrode circuit board and a negative electrode circuit board are respectively arranged at two ends of the battery mounting cavity; the positive electrode circuit board and the negative electrode circuit board are connected through a connecting wire; and the battery modules are mounted in the battery mounting cavity in the same direction and are connected with the positive electrode circuit board and the negative electrode circuit board. Positive and negative electrodes of the battery are uniform in direction, so that the battery is convenient to install and more convenient to use; the power supply is provided with an output voltage and current adjusting button, through voltage and current adjustment, under the condition that the load needs to be adjusted, the output power is reduced, the output power is more stable, meanwhile, the electricity load can obtain more stable and more suitable working voltage and current, and the situations that a battery and the load are heated and even fire breaks out are reduced.
Owner:GANZHOU LEWEI ELECTRONIC TECH DEV CO LTD

Adaptive temperature control system and method for ensuring stable output power of pump laser

ActiveCN120978514BStable output powerActively compensates for the effects of thermal loads
The application provides a kind of self-adaptive temperature control system and method of pump laser for guaranteeing output power stability, and relates to the technical field of laser temperature control.The method comprises the following steps:step S1: calculating the current temperature difference and the real-time change rate of pump laser output optical power;step S2: judging whether the current temperature difference exceeds the temperature difference threshold;step S3: confirming whether the real-time change rate of the current pump laser output optical power exceeds the output optical power change rate threshold;step S4: if the real-time change rate of the current pump laser output optical power exceeds the output optical power change rate threshold, the current temperature control target is issued to the temperature control execution module and the temperature control is started;step S5: repeating the above steps S1 to S4.The system comprises a processor, a detection module and a temperature control execution module.Based on this, the application solves the problem that the existing TEC temperature control system and method cannot adapt to environmental temperature changes, thereby making it difficult to effectively guarantee the stability of pump laser output power.
Owner:SHANDONG ZHONGKEJILIAN OPTOELECTRONIC INTEGRATED TECH RES INST CO LTD

Active combiner of DRTD optical fiber repeater

ActiveCN222638537UAttenuation adjustmentStable output powerElectromagnetic transmissionHigh level techniquesCommunication interfaceOptical Module
The utility model relates to an active combiner of a DRTD optical fiber repeater. The active combiner comprises a single-chip microcomputer, and an uplink communication interface, a DC stabilized power supply module, an ALC automatic level control circuit and an optical module alarm signal discrimination and radio frequency switch switching circuit which are connected with the single-chip microcomputer. A plurality of paths of uplink input radio frequency signals are respectively subjected to gain adjustment and attenuation through a radio frequency digital attenuation chip, are combined by a radio frequency power divider and then are input into an ALC (Automatic Level Control) circuit; the ALC automatic level control circuit filters the radio frequency signal through a 400MHz filter and a 450MHz filter which are connected in parallel and then outputs the radio frequency signal; a radio frequency signal of an output end is coupled and then converted into a voltage analog quantity signal, and the voltage analog quantity signal is compared with a reference level and then fed back to the attenuator so as to adjust output power. Compared with the prior art, the output ALC function is supported, the threshold of the output power is set by adjusting the reference level, and the attenuation amount is automatically adjusted, so that the stable output power is realized.
Owner:CRSC COMM & INFORMATION

Exhaust pressure stabilizing device

The application discloses an exhaust gas pressure stabilizing device, which is used for connecting to an exhaust port of a special diesel engine and comprises a body and a volume adjusting mechanism. The body is provided with a tail gas inlet for receiving tail gas from the exhaust port and a tail gas outlet for discharging the tail gas, and the body has a buffer cavity inside for buffering the pressure of the tail gas; the volume adjusting mechanism is connected with the body and is configured to adjust the volume of the buffer cavity. Thus, the buffer cavity provided on the body can receive and temporarily store the tail gas from the special diesel engine, can discharge the tail gas after stabilizing the pressure of the tail gas, can reduce the influence of the external environment on the special diesel engine, and can make the special diesel engine output stable power. In addition, the volume adjusting mechanism can adjust the volume of the buffer cavity according to different tail gas discharge amounts of the special diesel engine, so that the exhaust gas pressure stabilizing device can adapt to diesel engines of various different models.
Owner:THE 711TH RES INST OF CHINA STATE SHIPBUILDING CORP

Control method of grid-connected inverter of distributed energy system based on inertia self-adaption

The application provides a control method of an inertia adaptive based distributed energy system grid-connected inverter, and relates to the technical field of control of grid-connected inverters in distributed energy systems. The method comprises the following steps: collecting output voltage and output power of a virtual synchronous generator (VSG) in a distributed information energy system, and establishing a VSG model of a cascaded micro-grid in the distributed information energy system according to the collected data; determining a control strategy by using a distributed learning algorithm, and performing phase-locked loop control on the phase of the angular frequency of the VSG according to the control strategy, so as to obtain the load demand of the active power and the reactive power of the VSG; designing an adaptive virtual inertia control law according to the change process of the real-time angular frequency of the VSG, establishing an adaptive virtual inertia model of the VSG and designing a deviation term, so as to obtain an adaptive virtual inertia strategy. According to the method, the power grid state and the actual situation of the distributed information energy system are dynamically responded to the strategy, and the stability and response capability of the grid-connected inverter are improved.
Owner:NORTHEASTERN UNIV CHINA

A kind of fast adjusting the output power of pulse optical fiber laser device and laser radar

The application discloses a kind of fast regulation pulse output power's fiber laser device and laser radar, fiber laser device includes seed light source, wave division multiplexer, amplifier, demultiplexer, fiber optic splitter, power monitoring circuit, signal processing circuit, laser main control circuit and seed drive, laser main control circuit is connected with seed drive and signal processing circuit, seed drive is connected with seed light source, power monitoring circuit is connected with fiber optic splitter and signal processing circuit.The signal light generated by the first seed light source and the second seed light source in the application is first passed through the wave division multiplexer and then sequentially enters the multi-stage fiber amplifier and the demultiplexer, and then is divided into two output lights, one of which is passed through the fiber optic splitter to enter the power monitoring circuit to achieve the purpose of monitoring the main output power, and then the main output power is adjusted according to the size of the main output power to ensure the stability of the main output power of the laser, and the cost is controllable.
Owner:JIANGSU BRIGHT SPOT PHOTOELECTRIC RES CO LTD

Power adjusting device system for hydraulic compressed air energy storage

ActiveCN224214291UStable adjustment of speedStable adjustment of output powerMachines/enginesSafety/regulatory devicesPower qualityPower equipment
The utility model provides a hydraulic power compressed air energy storage power adjusting device system, a water flow adjusting device in the power adjusting device system comprises an air storage container and a water storage container, an air compression device pipeline is connected with the air storage container, and the air storage container is communicated with the water storage container through an air expansion pipe network and an energy storage air delivery pipe network respectively. The water storage container is connected with the water storage tank through an energy storage water injection pipe network, and an adjusting pump assembly is arranged on the energy storage water injection pipe network. The inlet end of the hydroelectric generation device is connected with the water storage container through the energy releasing water conveying pipe network, the outlet end of the hydroelectric generation device is connected with the water storage tank, and the frequency conversion rectifying device is electrically connected with the hydroelectric generation device. The water outlet pressure and flow of the water storage container are controlled by adjusting the pressure of compressed air, the rotating speed, the output power and the like of hydraulic equipment are stably adjusted by combining the hydraulic power generation device and adjusting the water inlet quantity, the variable-frequency rectifying device is connected, the current of an output power supply is adjusted, the power is kept stable, and the quality of the power supply is improved.
Owner:QIXING (BEIJING) TECHNOLOGY INNOVATION CO LTD

Wireless power transfer system with large coupling tolerance based on dual-frequency detuning

A wireless power transmission system with a wide range of coupling tolerance based on dual-frequency detuning. First, the system has two LC series resonant and two LC parallel resonant branches. By designing the parameters of each branch component, the entire system can operate in resonant and detuned states at different frequency points, where detuning can be divided into inductive detuning and capacitive detuning; then, the system parameters of the dual-frequency compensation network are designed according to the two preset resonant frequencies, so that the system can present different SS compensated resonant states and power transmission characteristics at different operating frequencies; finally, since the square wave input voltage contains all odd harmonics with the switching frequency as the fundamental frequency, the system can be excited by the fundamental frequency and triple frequency components of the square wave voltage, so the system power can superimpose two detuned SS power transmission characteristics to achieve the function of resisting coupling changes. The system can improve the ability of the wireless power transmission system to resist coupling changes without additional feedback control or primary-secondary communication.
Owner:CENT SOUTH UNIV

Method and system for adjusting power of static wireless charging system

ActiveCN119527087AStable output powerRealize dynamic constant voltage regulationCharging stationsVehicular energy storageVoltage loopTransmission technology
The invention relates to the technical field of wireless power transmission, and particularly discloses a static wireless charging system power regulation method and system, aiming at system output voltage fluctuation, a buck circuit is designed, system output voltage is detected in real time and further compared with reference output voltage, and the duty ratio of an MOS tube in the buck circuit is dynamically controlled in cooperation with a voltage loop, so that the static wireless charging system power regulation is realized. Dynamic constant-voltage regulation of the system output voltage is realized, so that the system output power is stable. Besides, on the basis of fluctuation of the inverter voltage of the transmitting end, voltage loop and current loop control is carried out by detecting high-frequency inverter output voltage and current in real time, stable output of the inverter voltage of the transmitting end is achieved, and further stabilization of the output power of the system is facilitated. A comparison result shows that the method and the system for adjusting the power of the static wireless charging system provided by the invention can quickly stabilize the output power of the static wireless charging system.
Owner:ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD +1

Engine cooling system, method for controlling the same and vehicle

ActiveCN117905565BReduce uneven thermal deformation up and downStable output powerLiquid coolingAir-treating devicesControl theoryCooling fluid
The application provides an engine cooling system, a control method thereof and a vehicle. The engine cooling system comprises a cylinder, a first water inlet pipe, a first water outlet pipe and a second water outlet pipe. The cylinder comprises a cylinder body. An inlet of the first water inlet pipe is used for receiving cooling liquid for cooling the cylinder body. An outlet of the first water inlet pipe is connected to the cylinder body. The first water outlet pipe is arranged at an upper half of the cylinder body. The second water outlet pipe is arranged at a lower half of the cylinder body. The first water inlet pipe is in communication with the first water outlet pipe and the second water outlet pipe, and the communication position is located at the cylinder body. The technical scheme can reduce the non-uniform thermal deformation of the cylinder body, reduce air leakage, and ensure the stable output power of the engine.
Owner:GUANGZHOU AUTOMOBILE GROUP CO LTD

Dual-frequency ultrasound penetration device, control method and applications thereof

This invention relates to a dual-frequency ultrasonic transdermal penetration enhancement device, its control method, and its application. The dual-frequency ultrasonic transdermal penetration enhancement device includes: a rectification and voltage regulation unit for adjusting the input power supply voltage to a preset voltage range; a dual-frequency signal generation unit for generating a first frequency signal and a second frequency signal respectively through two sets of DDS waveform generators; an impedance matching unit for adjusting the output impedance to match the input impedance of the ultrasonic transducer; a detection feedback unit for acquiring voltage and current signals and calculating the phase difference and the effective value of the current; and a control unit for obtaining the resonant frequency range of the ultrasonic transducer through frequency sweeping, adjusting the driving frequency when the real-time detected phase difference is too large and causes the transducer to deviate from its resonant state, and adjusting the output power to a stable state based on the error between the effective value of the current and a preset target value. This invention simultaneously increases cavitation effect and promotes molecular diffusion, thereby effectively improving drug transdermal efficiency.
Owner:ZHEJIANG WELLSUN INTELLIGENT TECH CO LTD

Uninterruptible power supply and control method thereof

The present invention provides an uninterruptible power supply comprising: an input configured to be electrically connectable to an AC power supply; an output configured to be electrically connectable to a load; the main branch comprises a rectifier module and an inverter module which are electrically connected between the input end and the output end in sequence; the storage battery branch comprises a power conversion module and a storage battery, and the storage battery branch is configured to be electrically connected to a node between the rectification module and the inversion module; wherein the power conversion module is configured to be capable of bidirectionally transmitting and converting direct current, and comprises the following working modes: a charging mode, in which the power conversion module is configured to enable the alternating current power supply to charge the storage battery under the condition that the increment of the load capacity of the load is lower than a preset threshold value; and in the power supply mode, under the condition that the increment of the load capacity of the load is greater than or equal to the preset threshold value, the power conversion module is configured to convert the direct current output by the storage battery, so that the alternating current power supply cooperatively supplies power to the load.
Owner:SANTAK ELECTRONICS SHENZHEN

High-power linear adjustable power stabilizing circuit with protection function for radio frequency power supply

The invention discloses a high-power linear adjustable power stabilizing circuit with a protection function for a radio frequency power supply. The high-power linear adjustable power stabilizing circuit comprises a voltage stabilizing circuit, a sampling circuit, an error amplifying circuit, a differential pressure detection circuit and a differential pressure protection circuit, the voltage stabilizing circuit comprises an input voltage, a first resistor, a second resistor, a voltage stabilizing diode and a voltage stabilizing PMOS tube. A source electrode of the voltage stabilizing PMOS tube is connected with input voltage, a grid electrode is connected with one end of the second resistor, and a drain electrode is output voltage; the first resistor is connected with an input voltage and a grid electrode of the voltage-stabilizing PMOS tube; the positive electrode of the voltage-stabilizing diode is connected with the grid electrode of the voltage-stabilizing PMOS tube, and the negative electrode is connected with input voltage. The power supply is used for stabilizing the output power of the radio frequency power supply, the voltage of the drain electrode of the final-stage power amplifier is controlled mainly through the high-power linear fine adjustable voltage stabilizing circuit, fine adjustment compensation of the output power is achieved, and the purpose of stabilizing the output power is achieved; meanwhile, an input and output voltage difference detection protection function is achieved, and the voltage stabilizing circuit can be prevented from being burnt out under abnormal conditions.
Owner:WUHAN GEWEI ELECTRONICS TECH

Monocrystalline silicon with high resistance concentration and crystal pulling process thereof

The invention provides a crystal pulling process of monocrystalline silicon with high resistance concentration ratio, which comprises the following steps of: according to a preset initial furnace charge of polycrystalline silicon, performing crystal pulling on a formed silicon melt by using a polycrystalline silicon material and a dopant through an RCZ method, and growing to obtain a monocrystalline silicon crystal bar; the initial furnace feeding amount is M0, the unit is kilogram and meets the formula 1: M0 = (piLr2 * 2.33 / 10) / fsend, L is the length of a crystal bar, and the unit is meter; r is the radius of the crystal bar, and the unit is centimeter; fsend is the maximum solidification rate of a single crystal bar and meets the following formula 2; cs is the concentration of the dopant in the crystal bar, and C0 is the concentration of the dopant in the silicon melt in the initial crystal pulling stage; keff is the effective segregation coefficient of the dopant, K is the mass transfer coefficient of the dopant, and v is the crystal pulling rate. The whole crystal pulling process is stable, easy to control and high in operability; the obtained crystal bar is stable in quality, and the head resistivity hit rate of different crystal bars is high. # imgabs0 #
Owner:SHUANGLIANG ECO ENERGY SYST CO LTD

EV-DWPT system output power control method and device based on primary side control

PendingCN119254046Acontrol output powerStable output powerDc-dc conversionAc-dc conversionSynchronous controlTransmission technology
The invention relates to an EV-DWPT system output power control method and device based on primary side control, and belongs to the wireless power transmission technology, and the method comprises the steps: determining a power fluctuation influence factor according to the output characteristics of an LCC-S topological structure; on the basis of an LCC-S compensation EV-DWPT system with double electric energy transmitting ends and a single electric energy receiving end, parameter information of the double electric energy transmitting ends is collected, and a system equivalent mutual inductance model about the power fluctuation influence factors is established; wherein the double-electric-energy transmitting end comprises a first electric-energy transmitting end and a second electric-energy transmitting end, the first electric-energy transmitting end at least comprises a first high-frequency inversion module, and the second electric-energy transmitting end at least comprises a second high-frequency inversion module; and performing synchronous phase shift control on the first high-frequency inversion module and the second high-frequency inversion module through a synchronous control structure according to the system equivalent mutual inductance model, so that the output voltage and the output power of the electric energy receiving end are kept stable.
Owner:ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD +1

Generator set load optimal distribution method based on epidemic virus propagation algorithm

The invention discloses a generator set load optimal distribution method based on an epidemic virus propagation algorithm, and the method specifically comprises the steps: building a scheduling model with the lowest unit operation cost as a target, and forming a system operation constraint condition; according to an epidemic virus propagation algorithm, solving an optimal solution and a worst solution of each operation cost under the condition of meeting operation constraint conditions of equality and inequality of the power system; and then a comprehensive sorting index is adopted to sort a large number of obtained Pareto optimal solutions, and the highest composite sorting index is used as an optimal scheme after multiple costs are weighed. According to the generator set load optimal distribution method, intelligent optimization of power load distribution is realized by simulating a virus transmission mechanism, the utilization rate of various heterogeneous power supplies can be effectively improved, and a power system can better accept wind power, photovoltaic power, hydroelectric power and other clean energy through optimal distribution of loads, so that the power generation efficiency is improved. And the method has important significance for assisting in realizing the dual-carbon target.
Owner:XIAN UNIV OF TECH

High-power magnetron cathode operating temperature detection and real-time control device

The application discloses a high-power magnetron cathode working temperature detection and real-time control device, and relates to the technical field of magnetron temperature detection.The technical points of the application include a composite detection module, an intelligent control module, an execution adjustment module, an anti-interference module and an environment adaptation module.The composite detection module is used for collecting magnetron cathode working temperature signals and pre-processing.The intelligent control module is used for receiving temperature signals and outputting control instructions.The execution adjustment module is used for adjusting the cathode temperature according to the control instructions.The anti-interference module is used for inhibiting electromagnetic interference.The environment adaptation module is used for collecting working condition parameters and feeding back to the intelligent control module.The technical effect is that the application solves the problems of large detection error and unstable signals of the existing device in a high-power high-frequency environment, ensures the accuracy and reliability of temperature detection, realizes real-time and accurate control of the cathode temperature, and ensures the stability of the magnetron output power and frequency.
Owner:GAN SU HONG GUANG DIAN ZI YOU XIAN ZE REN GONG SI