147 results about "Pulse discharge" patented technology

The invention discloses a rock pulse fracturing and high-voltage pulse discharge collaborative fracturing simulation device and method.The device comprises a triaxial loading mechanism, a pulse fracturing mechanism, a high-voltage pulse discharge mechanism, a collaborative control part and a monitoring mechanism, and the triaxial loading mechanism is used for loading triaxial pressure to a rock sample; a simulation hole is formed in the upper end surface of the rock sample, and a plug is plugged at the hole opening of the simulation hole; the pulse fracturing mechanism comprises a fracturing fluid storage tank and a pulse pumping assembly; the high-voltage pulse discharge mechanism comprises a Marx generator and a discharge electrode; the monitoring mechanism comprises a plurality of acoustic emission sensors and an acoustic emission data processor. The influence of the synergistic effect of pulse fracturing and high-voltage pulse discharge on the rock fracturing process can be systematically studied, the synergistic effect mechanism of the two is disclosed by accurately controlling the fracturing fluid release rhythm and the high-voltage pulse discharge rhythm, a parameter optimization basis is provided for field fracturing operation, the fracturing effect is improved, and the rock fracturing efficiency is improved. The mining cost is reduced.

The invention discloses a cable operation environment optimization method based on cable trench collection information, and relates to the technical field of intelligent operation and maintenance of a power system, and the method comprises the steps: collecting an original parameter data set in a cable trench; a pulse current signal is collected at a cable grounding wire connection point, and a standard pulse discharge capacity sequence is generated through band-pass filtering and amplitude integral conversion; based on the original relative humidity measurement value and the environment temperature value, calculating a compensated relative humidity value through a multi-scale heat conduction-diffusion coupling equation; calculating a cable insulation risk index through a quantum annealing algorithm by using the compensated relative humidity value and the standard pulse discharge capacity sequence; the dynamic measurement deviation of the temperature and humidity sensor is subjected to double compensation of thermal radiation and molecular adsorption by constructing a multi-scale heat conduction-diffusion coupling equation, so that the reliability of environmental state sensing is greatly improved, and the operation safety, stability and intelligent operation and maintenance level of a power cable system are effectively enhanced.

The invention relates to the technical field of internal resistance measurement, in particular to a method for measuring the internal resistance of a battery based on a variable-frequency pulse type discharge method. The method comprises the following steps: acquiring ripple voltage signals at two ends of a battery; extracting an alternating current component of the ripple voltage signal, and performing fast Fourier transform analysis on the alternating current component to obtain a fundamental frequency and a carrier frequency of the current ripple; respectively calculating time periods of the fundamental wave frequency and the carrier frequency to obtain a fundamental wave period and a carrier period; determining a reference period according to the fundamental wave period and the carrier wave period, and generating a dynamic discharge interval time range; acquiring an alternating current side voltage phase of the uninterruptible power supply; and performing zero value judgment on the alternating-current side voltage phase, and triggering a pulse discharge instruction when the alternating-current side voltage phase crosses zero. According to the invention, through dynamic adjustment of the discharge interval, frequency-variable pulse discharge and real-time internal resistance calculation, the measurement accuracy of the internal resistance of the battery is improved.

The invention relates to the technical field of battery management, and discloses a battery health state evaluation method and system for an electric tool energy supply device, and the method comprises the steps: obtaining multi-source sensor data in the operation process of an electric tool, and carrying out the preprocessing of the data; identifying and classifying multi-stage pulse discharge events, extracting multi-scale voltage response features and performing temperature compensation; equivalent circuit model parameter identification is carried out, abnormal identification results are checked and removed, and parameter aging characteristics are extracted; constructing a time sequence prediction model for prediction; evaluating the overall health state and the monomer consistency of the battery pack; defining a judgment standard of effective cycles, predicting the number of remaining effective cycles, calculating a confidence interval of a prediction result, and generating a battery management suggestion; formatting into a standardized evaluation report, carrying out data synchronization and model optimization through edge cloud collaboration, and recording a system operation log; according to the invention, accurate health state evaluation and residual life prediction are realized.

The invention provides a bulk metal ore grade online analysis method based on high-voltage pulse discharge breakdown spectroscopy, which comprises the following steps: (a) placing bulk metal ore particles in a high-voltage discharge electrode system filled with a liquid insulating medium, and applying 30-250kV voltage through a high-voltage electric pulse generator to carry out pulse discharge, carrying out electric breakdown on the ore particles and generating plasmas; (b) synchronously acquiring a plasma characteristic spectrum signal and a voltage waveform signal and a current waveform signal of pulse discharge in the electric breakdown process; (c) preprocessing the characteristic spectral signal, determining element types according to the wavelength of a characteristic spectral line, and extracting the intensity of the characteristic spectral line; and (d) inputting the characteristic spectral line intensity, the pulse discharge waveform parameter, the discharge condition and the ore particle property into a pre-established quantitative analysis model, and outputting the metal element grade of the ore particles.

The invention discloses a transformer partial discharge identification method and system based on phase preserving data enhancement, and the method comprises the steps: collecting the pulse discharge information of a transformer, converting the pulse discharge information into a first map, and carrying out the first preprocessing of the first map, and obtaining a second map; performing second preprocessing on the second atlas, dividing the second atlas into a training set and a test set, and performing data enhancement processing on the training set to generate a third atlas; and constructing a transformer partial discharge identification model, carrying out training based on the third atlas, obtaining an optimized transformer partial discharge identification model, and identifying a partial discharge type based on the optimized transformer partial discharge identification model. According to the method, the key phase information of the PRPD atlas is reserved, the recognition accuracy of the model and the recognition accuracy and robustness of various partial discharge types are improved, the method can better adapt to data changes in practical application, and the engineering applicability and reliability of partial discharge detection and fault diagnosis of power equipment are improved.

The invention discloses a load control method and system for mobile energy storage equipment, a medium and a product, and the method comprises the steps: obtaining the motion state data and environment state data of target mobile energy storage equipment; performing second-order differential operation on the real-time speed to obtain a jerk value; generating a power demand impact sequence; based on the real-time polarization impedance and the real-time open-circuit voltage, calculating a maximum pulse discharge power threshold value under the condition that a preset under-voltage protection threshold value is not triggered; when the maximum power demand value in the power demand impact sequence is greater than the maximum pulse discharge power threshold, determining that the target mobile energy storage equipment has a power supply drop risk in a preset load prediction time window; calculating an energy gap prediction sequence based on waveform integration of the power demand impact sequence; and generating a feed-forward compensation instruction based on the energy gap prediction sequence, and controlling an auxiliary power conversion unit in the target mobile energy storage equipment to execute the feed-forward compensation instruction. And the accuracy of load control is improved.

To provide a method for producing a hydrogen gas, which enables the production of a hydrogen gas with high energy efficiency.SOLUTION: This method for producing a hydrogen gas includes: placing water between electrodes; and allowing pulsed discharge to occur between the electrodes to decompose water molecules, thereby generating the hydrogen gas. In the method, the frequency for the pulsed discharge is 190-196 kHz or a double vibration frequency thereof.SELECTED DRAWING: Figure 1

The invention relates to the technical field of storage battery monitoring, and discloses a storage battery operation state visual monitoring method and system based on an electrochemical impedance and polarization internal resistance technology. The method comprises the following steps: sequentially applying sine wave alternating current excitation signals of a plurality of frequency points to a to-be-monitored storage battery, and synchronously drawing a first Nyquist graph; applying pulse discharge excitation in a floating charge state of the to-be-monitored storage battery, and acquiring a current signal and a terminal voltage signal in real time to obtain a polarization internal resistance estimated value; calculating a high-frequency intercept change rate according to the first Nyquist graph and a second Nyquist graph under a corresponding environment condition; and performing visual graphic display on the first Nyquist graph, the impedance parameter set, the voltage response waveform corresponding to the polarization internal resistance estimation value and the comprehensive aging index. According to the invention, a visual and clear battery operation state monitoring result can be provided for operation and maintenance personnel.

To realize an inexpensive and miniaturized test device for electrical and electronic equipment. [Solution] The present invention proposes an electrical and electronic equipment testing apparatus for housing an electrical and electronic equipment to be tested in an internal space and testing the electrical and electronic equipment, comprising: a voltage connector to which voltage is applied via a coaxial cable; a housing that includes the voltage connector at its end, constitutes an outer conductor, and forms an internal space; and an inner conductor provided inside the housing, extending from the coaxial conductor of the voltage connector, and constituting a conductor septum, wherein a resin-based insulating material that suppresses the discharge of high-voltage pulses is filled in a predetermined range from the end, determined based on the applied voltage and the distance from the inner conductor to the outer conductor.

The invention discloses a chirped pulse Fourier transform microwave spectrometer and a detection method, and belongs to the technical field of microwave spectrums.The chirped pulse Fourier transform microwave spectrometer comprises a pulse sample introduction and reactant in-situ generation system, a segmented chirped pulse generation and radiation system, a signal detection and high-speed acquisition system, a synchronous time sequence control system and a signal processing and automatic acquisition assembly. According to the chirped pulse Fourier transform microwave spectrometer and the detection method, 18-40 GHz continuous broadband coverage is realized through a segmented chirped pulse sequence, and a pulse discharge sampling system is integrated, so that high-reaction-activity intermediates and molecular clusters thereof can be generated and directly detected in situ; the technical blank of a broadband high-sensitivity microwave spectrometer with the frequency band of 18-40 GHz is filled, and a powerful tool is provided for research on structures and reaction kinetics of key transient species in atmospheric chemistry, combustion chemistry and celestial chemistry.

The application provides a rock square operation area mining device and method based on high-voltage pulse discharge, relates to the rock breaking technical field, and comprises a first electrode and four second electrodes, wherein the four second electrodes are uniformly distributed around the first electrode; the first electrode comprises a first fixed column, a first extension column is arranged on the side of the first fixed column every 90 degrees, and the tail end of the first extension column is connected with a first telescopic column; the side of the second fixed column is connected with two second extension columns and a third extension column, the tail end of the second electrode extension column is connected with a second telescopic column, the tail end of the third electrode extension column is connected with a third telescopic column, and the third telescopic column is telescopic along the direction of the third electrode extension column. The application provides a rock square operation area mining device based on high-voltage pulse discharge, simplifies the structure of the pulse discharge device, reduces the equipment cost, and improves the equipment reliability.

The invention provides a multi-pulse space trigger adjustable discharge method and device, and the method comprises the steps: a control module transmits a trigger signal to an ith discharge ignition module at an ignition time point of an ith exciter according to an ignition time sequence mode; and when the ith discharge ignition module receives the trigger signal, a rising edge pulse discharge signal is sent to the ith exciter, so that the ith exciter carries out ignition operation. By adjusting the ignition time sequence mode, the ignition time sequence of the multiple exciters can be flexibly controlled, different combustion chamber structures and working condition requirements are met, and the ignition efficiency is improved. Different distribution of the exciters in the space and combined use of multiple ignition modes can be overlapped to generate different ignition effects, the ignition reliability of the combustion chamber is further improved, and it is ensured that the engine can be successfully ignited under various complex conditions.

This invention discloses a device for degrading biochemical warfare agents using positive and negative pulse discharge. The device includes a positive and negative pulse drive power supply that self-excites to generate narrow pulse signals, converts mains power to DC power, and then chops the DC power to output high-voltage positive and negative pulses. A reactor includes a reaction vessel and an inner electrode core, with the inner electrode core fixed inside the reaction vessel. The reaction vessel has a wastewater inlet pipe and a clean water outlet pipe. The wastewater inlet pipe receives tap water containing the biochemical warfare agent, and the clean water outlet pipe connects to a clean water tank. The inner electrode core is filled with an inner stainless steel wire mesh, which is connected to the positive and negative pulse drive power supply via an insulated wire. The outside of the reaction vessel is wrapped with an outer stainless steel wire mesh, which is grounded via a wire. This invention achieves rapid wastewater purification and good degradation effect of biochemical warfare agents through high-voltage positive and negative pulse discharge using the positive and negative pulse drive power supply.

To eliminate the effect of noise derived from a cooling Sirocco fan superimposing on an ADC reference voltage of a microcontroller module when measuring the voltage of the Secondary battery, if the drive power supply for the cooling Sirocco fan and the power supply for the microcontroller module are shared.SOLUTION: A Sirocco fan drive circuit, including GNDPWR, is isolated via a jumper switch and power is supplied from a separate power source.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of ESD (Electro-Static Discharge) protection, and discloses an ESD (Electro-Static Discharge) protection circuit for dual power supply and a chip, the ESD protection circuit comprises a delay resistor, a divider resistor, a discharge MOS (Metal Oxide Semiconductor) tube and two ESD protection units; in actual use, the two ESD protection units are arranged, each ESD protection unit provides a negative electrostatic pulse discharge path through a reverse discharge branch, and provides a forward discharge path through a forward discharge branch and a discharge MOS tube, so that ESD protection can be carried out on two power supplies; in addition, a forward conduction voltage division unit is arranged to provide a unidirectional conduction current path, so that the two ESD electrostatic protection units do not generate leakage current; finally, the two ESD electrostatic protection units share the discharge MOS tube and the delay resistor, the circuit area is reduced through a device sharing mode, and integration realization is facilitated.

The application discloses a high-voltage thyristor short-circuit switch testing device and system, and the device comprises a direct-current power supply module, a charging current-limiting resistor, an IGBT discharge switch, a pulse discharge capacitor, an IGBT driving and protection circuit module, and further comprises an overcurrent detection and latching module; the overcurrent detection and latching module collects the Hall current of a measured loop, and sends a blocking IGBT control signal to the input end of the IGBT driving and protection circuit module according to the Hall current; and after the blocking signal is reset, the IGBT can be controlled by the IGBT driving signal.

The invention discloses a long pulse debugging method for a large-area thermionic cathode ion source, and belongs to the technical field of thermionic cathode ion sources, and the method comprises the steps: carrying out the air inlet vacuum debugging after the ion source is assembled; the insulation and voltage endurance capability is improved through cold high-voltage exercise; turning off high voltage, lighting a lamp filament, applying arc voltage, and cleaning the cavity through arc chamber plasma discharge; the extraction voltage is gradually applied to perform beam extraction exercise, and beam transmission is optimized through diversion coefficient scanning; and finally, the diversion coefficient is reduced, the pulse width is prolonged, and long-pulse discharge debugging is realized. According to the method, a systematic debugging process from vacuum verification, insulation and voltage resistance, cavity cleaning to beam extraction and long pulse discharge is established, the stability and reliability of the ion source can be effectively improved, the breakdown risk is reduced, and a technical basis is provided for long-term stable operation of a large-area hot cathode ion source in the future.

The invention relates to the technical field of power supply circuits, in particular to a modular circuit of a high-repetition-frequency pulse power supply and a control method of the modular circuit. According to the technical scheme, the device comprises a preceding-stage AC-DC charging unit, an energy storage capacitor, two pulse discharging modules connected in parallel and a discharging switch, and the preceding-stage AC-DC charging unit is used for converting alternating current input into direct current. According to the invention, by adopting a standardized and parallelizable modular circuit architecture, flexible and linear adjustment of the maximum output current of the system is realized, the product development and delivery cycle for different current requirements is remarkably shortened, and the customization and maintenance cost is reduced; meanwhile, the total power is dispersed to a plurality of independent modules through the design, the limit requirement for a single power device is lowered, and the reliability and maintainability of the whole system are improved; under the design of synchronous triggering and current sharing, all the modules can cooperatively output high-quality and high-consistency pulse current.

This invention provides a method for controlling the rate of change of current in an electrical discharge pulse power supply. The electrical discharge pulse power supply includes a high-voltage breakdown circuit for gap breakdown machining in electrical discharge processing, a constant current source circuit for controlling the peak current of the pulse discharge, and a current waveform control circuit for controlling the rate of change of current at the leading and trailing edges of the output current waveform. The pulse power supply of this invention adopts an energy-saving design, eliminating power consumption and heat dissipation problems caused by current-limiting resistors in traditional power supplies. It meets different needs in actual processing and has better market applicability. It can effectively control the output current waveform to rise and fall at a certain slope, increasing the variety of output current waveforms, resulting in high processing efficiency and low electrode loss, thus meeting different processing requirements in actual production.

The application discloses a kind of full-component aggregate continuous industrialization recycling system and method of waste concrete, and the system includes reaction vessel, flat plate discharge electrode, screen group, powder collection container and side aggregate collection container.The screen group includes multiple screen meshes arranged in parallel from top to bottom;Screen mesh can be switched to connect high-voltage pulse source or ground, thereby forming high-voltage electrode or grounding electrode.When recycling waste concrete, the electrode properties of adjacent screen mesh layers in the screen group are replaced in sequence, so that a pulse discharge circuit is formed between adjacent screen mesh layers, particles on the lower screen mesh in adjacent screen mesh layers are crushed, and different particle size aggregates separated are input into the aggregate collection container.Fine powder crushed is entered into the powder collection container through the fourth screen mesh, avoiding secondary crushing of regenerated aggregates that have been dissociated, ensuring the original size and apparent form of the aggregate, achieving continuous industrialization recycling of waste concrete, and reducing energy consumption.

The utility model discloses an active driving type intelligent voice pulse voltage anti-theft door which can be applied to a door provided with a common door lock and a high-grade door lock. According to the active driving type intelligent voice pulse voltage anti-theft door, the outside of the door is monitored at any time through the pyroelectric infrared sensor installed on the outer side of the door, and dynamic monitoring is conducted within the monitoring range. And when an abnormal phenomenon occurs, the camera system is started to carry out automatic camera shooting. Meanwhile, the first function is started for voice driving, and after 10 seconds of starting, if the thief does not give up, the second function is automatically started for pulse type discharging, so that the thief is prompted to stop the criminal behavior of theft due to instant electric shock, and the purpose of actively driving the thief is achieved.

The invention relates to a discharge control circuit, a corresponding system, a vehicle and a method. A discharge control circuit includes a driving circuit arrangement that applies a pulsed discharge signal to a control terminal of an electronic switch and generates a pulse in the pulsed discharge signal, the duration of the pulse being in accordance with a voltage applied to the control terminal of the electronic switch sensed at a sensing node. The circuit also includes a feedback network including a reference generator that generates a signal indicative of a reference duration of a pulse in the pulsed discharge signal, and a pulse duration generator coupled to the sensing node to generate a duration signal indicative of an actual duration of the pulse in the discharge signal. A pulse duration comparator coupled to the reference generator and the pulse duration generator acts on the pulse duration control circuitry to control the duration of a pulse in the pulse discharge signal applied to the control terminal of the electronic switch.

The invention discloses a solid-state switch output pulse voltage top drop compensation method and circuit, and the method comprises the steps: monitoring the discharge time of a main pulse in real time when a main pulse generation unit outputs pulse voltage, and immediately injecting a compensation current into an energy storage module of the main pulse generation unit when the main pulse begins to discharge, the compensation current is used for counteracting voltage drop caused by discharge of the energy storage module, so that the top of the discharge voltage of the main pulse generation unit is kept flat during discharge. According to the invention, solid-state switch output pulse top drop compensation is simply and efficiently realized.

The utility model provides a high power pulse discharge device, including power supply, pulse trigger control system, a plurality of discharge loop and oscilloscope, the discharge loop includes a plurality of discharge branch circuits that are connected in parallel, each discharge branch circuit includes switch tube and resistive load that are connected in order, each discharge branch circuit is connected with the pulse trigger control system, and the oscilloscope is connected with the switch tube and the resistive load. The oscilloscope is connected in parallel with each discharge branch and is used for monitoring the working voltage of each discharge branch in real time; the large-current pulse discharge test device can realize a pulse discharge test in a shorter time, can also realize a large-current discharge test, and is especially suitable for a large-current pulse discharge test of a large battery pack. Compared with the prior art, the device has remarkable advantages in the aspects of pulse time and discharge current, and can meet discharge test requirements of higher precision and higher power.

This invention belongs to the field of power semiconductor technology and relates to a parallel current sharing circuit for a variable conduction region MCT. This invention employs a gate layout partitioning and threshold hierarchical control method, dividing the MCT gate layout into multiple conduction regions. By combining a gate drive circuit, a pulse discharge circuit, a feedback circuit, and a gate control circuit, the MCT gate conduction regions are controlled in real time, achieving precise control of the current peak during pulse discharge. The gate drive circuit is powered by an external low-voltage power supply and provides the gate drive signal to the gate control circuit through a driver chip. The pulse discharge circuit is powered by an external high-voltage source, discharging a resistor to generate a high-frequency pulse current signal. The feedback circuit samples the current peak of the high-frequency pulse current signal and provides a feedback signal to the gate control circuit. The feedback signal from the feedback circuit is used to precisely control the MCT conduction regions. The parallel current sharing structure of the variable conduction region MCT has the advantages of high integration, small size, and high stability.

The invention relates to an electric pulse petroleum underground dredging system and method, and relates to the technical field of electric pulse unblocking, and the electric pulse petroleum underground dredging method comprises the following steps: a mains supply is connected, and a second power supply distributor supplies power to a first power supply distributor according to a preset electric energy output parameter; the first power supply distributor supplies power to the energy storage unit through the high-voltage power supply, and the control unit collects and analyzes the underground temperature, the underground pressure and the current peak value through the measuring unit; according to a data analysis result, the control unit sends a preset pulse signal to the energy storage unit to trigger the electronic switch to release a high-voltage pulse; the control unit controls the wire feeding mechanism to feed metal wires to the two ends of the discharge electrodes, high-voltage pulses discharge between the discharge electrodes through the metal wires, and shock waves are formed to break blockages. When the electric pulse discharges through the petroleum mixture, liquid is gasified and expanded within several microseconds, and generated pressure waves enable mineral substances blocked in pipeline holes to be stripped, so that petroleum enters an oil well smoothly, and the yield of the oil well is improved.

The invention belongs to the technical field of electric spark machine tools, and discloses an intelligent electric spark machine tool control method, which comprises the following steps of: setting an interface module to convert signal line strong current led from an electrode end and a workpiece end of a machine tool into weak current, connecting the weak current to an acquisition card to acquire voltage and current signal data, and performing electromagnetic interference signal isolation processing on the weak current part; the accuracy is ensured; voltage and current thresholds are set at a system end to distinguish various discharge pulses, and a discharge state is used for replacing a harmful discharge rate; 2-3 electrical gauge parameters of the gap voltage, the cutter lifting period and the pulse interval are adjusted in real time, so that the gap spark liquid breakdown strength with the highest machining efficiency is kept, electrode carbon deposition is avoided, and the stable and efficient machining requirements are met. It can be guaranteed that the gap spark liquid breakdown strength between the electrode and the workpiece is suitable for electric spark pulse discharge, carbon deposition is avoided, and the discharge efficiency and the machining efficiency are optimized.

The invention discloses a system for detecting the on-off performance of a direct-current switch, which comprises a pulse power supply device, a switch device and a voltage and current detection device, and is characterized in that the pulse power supply device and the voltage and current detection device are electrically connected with the switch device; the pulse power supply device is provided with a pulse voltage module and a pulse current module and is a single pulse; the pulse voltage module is executed immediately after the pulse current module ends, and the voltage and current detection device records the voltage and current of the direct current switch to be detected in real time so as to obtain voltage and current change diagrams used for analyzing the breaking performance; the invention also provides a detection method. According to the invention, pulse discharge is adopted and voltage and current changes are detected in real time to obtain voltage and current change diagrams, a pulse current module and a pulse voltage module of a pulse power supply device are used for discharging in sequence, and a voltage and current detection device is used for detecting the whole test process in real time to obtain the voltage and current change diagrams; therefore, the on-off performance of the direct-current switch is accurately analyzed.

The embodiment of the invention discloses a zero-crossing commutation control method, electronic equipment and a storage medium. The method comprises the following steps: detecting a polarity change of an input voltage; in response to the polarity change, according to a preset control parameter, an open-loop pulse is emitted through a corresponding active switching tube, and discharging of a plurality of open-loop periods is carried out on a corresponding synchronous rectifier tube; the control parameters comprise at least two groups of different pulse width step lengths, and the width of the open-loop pulse changes along with the pulse width step length corresponding to each open-loop period; and when the open-loop pulse number reaches the preset maximum pulse number, the corresponding synchronous rectifier tube is conducted. By adopting a multi-section linear open-loop pulse discharge strategy, the discharge current peak can be reduced, the discharge process is smooth, the synchronous rectifier tube is ensured to be conducted at the minimum voltage, and the problems of EMI and voltage oscillation in a traditional totem PFC zero-crossing commutation scheme are effectively solved.