184 results about "Electronic load" patented technology

The invention discloses a POL power supply automatic test method based on modular design, and belongs to the technical field of power supply test. The method comprises the following steps: firstly, under the control of an upper computer, automatically reading POL power supply basic parameters including key characteristic parameters such as input / output voltage, rated current and frequency from a preset Excel table, and establishing a judgment reference for testing; then, instrument initialization is completed, communication connection with test equipment such as an oscilloscope, an electronic load and a direct-current power supply is established, and configuration of initialization function parameters is completed; then, executing a measurement task of each core parameter of the POL power supply to be tested, and in the test process, executing a parallel measurement management mechanism, namely configuring each instrument parameter and channel state in real time according to a specific test item, and triggering a retry or interrupt logic under the conditions of communication abnormality, data timeout and the like until the test recovers a running state; and finally, after the test is completed, performing Excel storage and interaction on the standardized test data and the waveform screenshot, and finally safely exiting. According to the POL power supply automatic test method based on the modular design, the whole test process is divided into a plurality of serial or parallel function processing units such as parameter reading, instrument initialization, test execution and test management, data storage and interaction and the like, and high efficiency and usability of a test system are achieved.

The invention discloses a battery management unit equalization efficiency test method and system, and relates to the technical field of function test, and the method comprises the steps: inputting a time-varying test instruction sequence into an electronic load instrument and a BMS for active equalization, synchronously collecting multi-modal time sequence data in an active equalization process, and constructing a dynamic equalization matrix; inputting the dynamic equilibrium matrix into a time-varying efficiency evaluation model, performing real-time association mapping by a working condition mapping layer, performing feature aggregation by a statistical aggregation layer, and outputting an efficiency distribution thermodynamic diagram; and performing global statistical characteristic analysis and multi-parameter coupling association on the efficiency distribution thermodynamic diagram and the dynamic equilibrium matrix, identifying an efficiency abnormal trend, performing time sequence prediction analysis and root cause analysis on the efficiency abnormal trend, and generating an equilibrium performance evaluation report. According to the method, the time-varying efficiency evaluation model is constructed, and the time-varying test instruction sequence is synchronously generated, so that the visualization and deep insight of the test result are realized, and the authenticity and compositeness of test excitation are improved.

The utility model discloses a parallel operation copper bar and system of an electronic load, and the parallel operation copper bar comprises a positive electrode copper bar which is used for connecting the positive electrode power input end of the electronic load; the cathode copper bar is used for connecting a cathode power input end of the electronic load, and the cathode copper bar and the anode copper bar are oppositely arranged at an interval; the insulating plate is arranged between the positive electrode copper bar and the negative electrode copper bar, and the positive electrode copper bar and the negative electrode copper bar are tightly attached to one side face of the insulating plate respectively. According to the invention, the amplitude of current overshoot oscillation can be reduced, and the reliability and safety of the parallel operation system of the electronic load are improved.

The utility model discloses a miniature electronic load instrument applied to production, which comprises an instrument body, one end of the instrument body is provided with a to-be-tested switching power supply connecting port, the instrument body is provided with a liquid crystal display screen and a plurality of function keys, and the function keys comprise a start key, a setting key, a + key and a-key. A main control board is arranged in the instrument body, the main control board comprises a single chip microcomputer, a to-be-tested switching power supply connecting port, a liquid crystal display screen, a start key, a setting key, a + key and a-key are electrically connected with the main control board, and the to-be-tested switching power supply connecting port, the single chip microcomputer, the liquid crystal display screen, the start key, the setting key, the + key and the-key form a main control circuit. According to the utility model, the conventional professional equipment is replaced, the cost of instruments, equipment and materials is greatly reduced, the parameter adjustment of a test experiment product can be quickly responded, and meanwhile, various test parameters of the test product can be intuitively observed through the 1602 liquid crystal on the surface, so that the use is convenient.

The invention discloses a power electronic load-containing load equivalence and parameter identification method, which comprises the following steps of: preprocessing original power load data, and extracting data required by subsequent parameter identification; determining a load model structure, and performing aggregation equivalence on the power distribution network, the static load, the dynamic load and the power electronic load according to a principle that system response before and after aggregation remains unchanged; the method comprises the following steps: firstly, constructing a load model, then determining parameters, needing to be identified, of each type of load model, distinguishing dominant parameters and non-dominant parameters by adopting trajectory sensitivity, setting values of the non-dominant parameters as typical values, then identifying the dominant parameters through an improved quantum particle swarm algorithm, determining the values of the dominant parameters, and finally, performing accuracy evaluation on the established load model. According to the invention, a more accurate load model can be established for a modern power system containing a power electronic load, the simulation precision of the power system is improved, and the analysis and control of a power department on the power system are facilitated.

This invention discloses a test load control method and system based on collaborative protection, belonging to the technical field of power electronic testing equipment. It includes acquiring mode switching commands and controlling a regenerative DC power supply to maintain a constant voltage mode and controlling a linear electronic load to switch to a rapid load-pull mode based on these commands. An anti-backflow circuit is used to allow current to flow from the device under test (DUT) to the test loop, and energy replenishment is provided through a filter absorption circuit. The port voltage of the regenerative DC power supply is fine-tuned using an outer-loop voltage regulator to maintain a stable distribution ratio between the port voltage of the regenerative DC power supply and the port voltage of the linear electronic load during mode switching. This invention forms a three-layer protection mechanism of hardware anti-reverse circuitry, hardware voltage regulation, and software closed-loop fine-tuning, which can balance safety and performance indicators when facing complex dynamic testing conditions.

The present application belongs to the technical field of fuel cell, and particularly relates to a kind of fuel cell impedance spectrum fast measurement system and measurement method, system is divided into excitation current injection part, data acquisition part and host computer, host computer uses DIBS signal with excellent peak suppression ability and flexible amplitude frequency design ability as test excitation, uses electronic load as excitation source.Host computer can control electronic load to generate current excitation waveform for impedance test based on DIBS signal, and electronic load injects excitation current into the output current of the measured stack, and host computer can also read the sampling data of data acquisition part, and the collected excitation current and response voltage data are subjected to fast Fourier transform to obtain electrochemical impedance spectrum.The present application improves the impedance measurement efficiency, the hardware structure is simple, has good on-site application prospect, and the measured object can be extended to other electrochemical systems including electrolytic cell, and has good expandability.

The present disclosure is directed, in general, to (1) nonlinear optical (NLO) chromophores, including (2) compositions / materials / resistive layers comprising NLO chromophores, and the methods of making the compositions / materials / resistive layers comprising NLO chromophores (e.g., methods of poling and / or drying, and the like), (3) uses of NLO chromophores in electro-optic devices (e.g., electro-optic modulators (EOMs)). NLO chromophores disclosed herein not only have large EO effect, but also have fast modulation speed. In addition, NLO chromophores disclosed herein have superior refractive index, photostability and thermal stability compared to other EO Materials. As a consequence, NLO chromophores herein are particularly suited for use as EO materials in connection with low power and small footprint devices, including devices used in data acquisition systems, analog I / O modules, field transmitters, lab and field instrumentation, servo drive control modules, direct current (DC) power supply, alternating current (AC), and / or electronic load.

The invention provides an unmanned aerial vehicle wireless energy taking control method, device and system, and relates to the technical field of power systems and wireless charging. The method comprises the steps of obtaining power transmission line current parameters; based on the power transmission line current parameters, target load modes are determined, and the target load modes comprise a pure resistive load mode and a resistive-capacitive load mode; according to the target load mode, adjusting impedance characteristics of an adjustable electronic load in the unmanned aerial vehicle wireless energy taking control device and excitation parameters of an energy taking iron core in the unmanned aerial vehicle wireless energy taking control device; and according to the adjusted excitation parameters and impedance characteristics, the unmanned aerial vehicle wireless energy taking control device is controlled to output stable direct current voltage. The method is used for improving the energy taking stability and the energy taking efficiency of the unmanned aerial vehicle in operation states such as inspection, so that the unmanned aerial vehicle can work continuously, and the overall operation efficiency is improved.

An electronic load testing system is configured to emulate aspects of an integrated circuit (IC). A control module of the system is configured to be electrically coupled to a first location on a printed circuit board (PCB) of an electronic assembly, and a load module is configured to be electrically coupled to a second location on the PCB. The load module includes a load cell configured to selectively conduct current from a power supply of the electronic assembly. The first location and the second location are spaced apart and in electronic communication via one or more traces of the PCB. The control module is configured to communicate with the load module via the one or more traces of the PCB. In some examples, the load module and the IC have an equivalent form factor, such that the load module can be installed in place of the IC.

1. The name of the design product: multi-phase power controller system level test equipment. 2. The use of the design product: the design product is a test equipment for control board, electronic load board and signal detection board, used for simulating multi-phase power controller. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention relates to the technical field of electronic components, in particular to a diode full-automatic test system and a performance test method, and the system comprises a test management server, a programmable test resource array, a feeding and discharging and positioning module and a test station. The test management server is a central processing unit, carries test management software and is responsible for formulating a test process, scheduling and distributing test tasks, centrally storing and managing test data and generating a test report; the programmable test resource array is in communication connection with the test management server, and the programmable test resource array comprises a programmable direct current power supply, a programmable electronic load, a high-precision digital multimeter, a programmable function generator and a multiplexing switch matrix. According to the invention, qualitative leap of efficiency, precision and reliability is realized in production inspection, quality evaluation and sorting links of diodes.

The application discloses an engine loading power extraction multi-load integrated control system and method, and belongs to the technical field of engine test control. The system comprises a host computer, a PLC control unit, a database and a field device layer. The field device layer comprises electronic load, hydraulic load, fuel load and air load branch. The host computer is used for mode selection, parameter setting, control instruction generation and state display; the PLC control unit is used for logical judgment, task allocation, interlocking protection and closed-loop correction; the database is used for operation data storage and management. For valve control load, the host computer generates a reference command current, and uses historical data and a prediction model to intelligently correct the initial current; the PLC combines field feedback to complete closed-loop regulation. The application integrates multiple loads into a unified control platform, realizes centralized monitoring, collaborative scheduling and unified data management, reduces the dependence on manual experience, and improves the load response speed, control accuracy and system integration.

The embodiment of the invention discloses a bridge type bridging capacitor voltage regulation module circuit and a power supply system. The bridge type bridging capacitor voltage regulation module circuit comprises a voltage division converter module, a transformer module, at least two current doubling rectifier modules and an output module. The voltage-dividing converter module comprises an input power supply, two voltage-dividing capacitors, two groups of half-bridge circuits and two bridging capacitors. Each group of half-bridge circuits comprises two first switching tubes. And each current doubling rectifying module comprises a blocking capacitor, two second switching tubes and two output inductors. The output module comprises an output capacitor and an electronic load. By adopting the embodiment of the invention, high efficiency, high power density and excellent transient response can be realized at the same time under the conditions of high step-down ratio and large current load, remarkable engineering application value is shown, and the method is particularly suitable for a power supply system of a new generation of AI data center chip.

The invention discloses a photovoltaic MPPT (Maximum Power Point Tracking) dual-mode control system and method. The photovoltaic MPPT dual-mode control system comprises a photovoltaic module unit, a Boost circuit, a voltage and current sampling circuit, an MPPT controller, a PWM (Pulse-Width Modulation) module and a direct-current electronic load. The MPPT controller adopts a dual-mode power prediction control strategy combining an index adjustable step length conductance increment method and a constant voltage tracking method, and realizes prospective identification of environmental changes by constructing disturbance trend predictive quantity fusing power first-order and second-order changes; the hysteresis interval width of mode switching is dynamically adjusted based on the output power fluctuation variance, and the anti-noise capability is improved; in a conductance increment mode, a nonlinear potential function containing a first-order slope and a second-order curvature is utilized to generate an exponential self-adaptive step length, and high-precision control of far MPP large-step-length rapid tracking and near MPP small-step-length oscillation suppression is achieved. The tracking speed and the steady-state precision of the system under the dynamic and steady-state working conditions are effectively improved, and the overall energy capture efficiency is enhanced.

The invention discloses an automatic test method for rated power of a DC / DC converter of a new energy automobile, which mainly aims at finding and adjusting the condition that the actual output power of the DC / DC converter is higher than a rated value in time and avoiding the risks of fuse fusing, line overheating, low-voltage electric equipment burning, even fire and the like caused by exceeding the bearing limit of a low-voltage system component. Specifically, the method comprises the steps of firstly deploying a power test system and performing line connection, setting test parameters after deployment is completed, starting a test and collecting test data within a preset test duration; in the test process, when the output power of the DC / DC converter exceeds the power control upper and lower limit values, the current of the DC electronic load is automatically adjusted, so that the output power of the DC / DC converter returns to the control range. According to the invention, the test value of the rated power of the DC / DC converter can be accurately obtained at one time, the test cost is greatly reduced, the safety is improved, and the consistency and reliability of the test result are effectively ensured.

The invention discloses a self-charging direct-current electronic load circuit and a self-charging direct-current electronic load, and relates to the technical field of electronic load testing, and the circuit comprises a load simulation module, an energy storage module and a charging management module. The input end of the load simulation module is connected with the tested power supply for consuming the electric energy output by the tested power supply. The energy storage module is connected with the load simulation module and used for supplying power to the load simulation module. The charging management module is connected with the tested power supply and the energy storage module and is used for obtaining electric energy from the tested power supply and charging the energy storage module when the load simulation module works. Compared with the prior art, through the charging management module connected in parallel with the load simulation module, part of electric energy is recovered and charges the energy storage module while the electric energy of the tested power supply is consumed, so that self-sustaining work of the direct-current electronic load without depending on an external power supply is realized.

The utility model discloses a kind of multi-loop processing CV mode electronic load instrument, it includes main control module, main power module, auxiliary power module, display module, button module, power amplifier module, communication board module and interface module.Main control module is core control unit, contains instrument amplifier, and difference proportional circuit, integrated operational amplifier circuit, advance adjustment circuit, lag adjustment circuit and analog switch, different input signal characteristics are adapted by flexible switching adjustment mode.The main power module and auxiliary power module provide stable power supply respectively;Display module and button module form man-machine interface;Power amplifier module drives high-power MOS tube to maintain constant voltage output;Communication board module supports multiple communication protocols;Interface module provides physical connection port for external equipment.The utility model significantly improves system stability and adaptability through multi-loop design, suitable for a variety of application scenarios.

The application discloses a constant-current constant-voltage circuit and an electronic load for the electronic load, and relates to the technical field of electronic loads. The constant-current constant-voltage circuit comprises an MCU, a DAC module, a first error amplifier, a plurality of constant-current loops, a power supply end and a first differential amplifier, the plurality of constant-current loops are connected in parallel, the voltage or the current of the plurality of parallel constant-current loops is controlled through the DAC module and the first error amplifier, and the originally parallel circuit of a plurality of small closed loops is changed into the architecture of controlling small closed loops by a large closed loop. The plurality of constant-current loops are connected to the ground through a sampling resistor, the precision and the noise will not be affected by the measured power supply and overcurrent, and the sampling precision is high. The constant-current constant-voltage circuit has strong scalability, the number of the parallel constant-current loops can be infinitely stacked in theory, and is particularly suitable for the case of high voltage and small current.

The invention discloses a hardware-in-the-loop test system and method for a solid oxide high-temperature electrolysis system, which are used for testing the performance of a controller and an electrolysis power supply of an SOEC system. Comprising an electronic load used for simulating an electric pile body of an SOEC system and absorbing voltage and current output by an electrolysis power supply; the real-time simulation machine is used for operating a real-time simulation model, and the real-time simulation model is configured to be capable of simulating and outputting a virtual sensor signal of the galvanic pile according to the state parameters of the virtual actuator; and the peripheral board card is used for communication between the real-time simulation machine and the controller. According to the method, a virtual electric pile combining a multi-physics field coupled SOEC electric pile model and a high-dynamic electronic load is adopted to replace an SOEC electric pile entity for testing, so that the testing process can be parallelized and automated, the testing cost is remarkably reduced, and the research and development period is greatly shortened; by designing an integrated fault injection mechanism and a signal interface with a high security level, comprehensive verification of extreme faults is realized.

The utility model discloses an LED drive electrical parameter automatic testing device comprising a system cabinet, and a testing instrument, a load and a computer host are integrated in the system cabinet. A test control program is built in the computer host; an operation table is arranged outside the system cabinet, and wiring terminals connected with a test instrument and a load in the system cabinet are arranged on the operation table; a display screen fixed through a hinge is arranged above the operation table. Samples to be tested are connected to a test circuit through a terminal reserved on an operation table, when multiple voltages or multiple samples need to be tested, the multiple samples to be tested are connected to the circuit on a workbench, and multiple test voltages are set by a program for testing at the same time; and automatic load switching can be realized by setting different load degrees of the electronic load, so that the labor investment is greatly reduced, and the test efficiency is improved.

The present disclosure is directed, in general, to (1) nonlinear optical (NLO) chromophores, including (2) compositions / materials / resistive layers comprising NLO chromophores, and the methods of making the compositions / materials / resistive layers comprising NLO chromophores (e.g., methods of poling and / or drying, and the like), (3) uses of NLO chromophores in electro-optic devices (e.g., electro-optic modulators (EOMs)). NLO chromophores disclosed herein not only have large EO effect, but also have fast modulation speed. In addition, NLO chromophores disclosed herein have superior increased r33, photostability and thermal stability compared to other EO Materials. As a consequence, NLO chromophores herein are particularly suited for use as EO materials in connection with low power and small footprint devices, including devices used in data acquisition systems, analog I / O modules, field transmitters, lab and field instrumentation, servo drive control modules, direct current (DC) power supply, alternating current (AC), and / or electronic load.

This application discloses a signal calibration system for a plasma etching machine. The system includes a constant current source device, an electronic load instrument, and a host computer. A target constant current output unit in the constant current source device is communicatively connected to both the host computer and the electronic load instrument. The host computer is also communicatively connected to the electronic load instrument. The host computer sequentially sends M2 current output commands to the target constant current output unit. The target constant current output unit outputs a corresponding second driving current, which flows through the electronic load instrument to generate an output voltage. The target constant current output unit detects this output voltage and generates a voltage register value. The electronic load instrument detects the output voltage and outputs the measured voltage. When the measured voltage reaches the calibration voltage, the host computer generates a second mapping table based on the measured voltage and the voltage register value, and sends the second mapping table to the target constant current output unit. This signal calibration system uses the electronic load instrument as a calibration reference, improving calibration accuracy.

The invention discloses a three-phase load test circuit for testing a motor driver, and the circuit comprises a three-phase bridge driver which is used for generating a three-phase AC voltage signal; the synchronous rectification module is used for synchronously rectifying the three-phase alternating-current voltage signal into a direct-current voltage signal and providing the direct-current voltage signal to an electronic load; the electronic load is used for simulating a resistive load and completing the test under the driving of the direct-current voltage signal; wherein the electronic load is set to be in a current source mode in which the magnitude of output current is adjustable; the MCU controller is used for calculating a PWM (Pulse Width Modulation) signal with a target duty ratio according to the electronic load feedback signal; the isolation driver is used for driving the three-phase bridge driver and the synchronous rectification module to work according to the PWM signal; the synchronous rectification module comprises a power inductor used for simulating an inductive load. A conventional resistive load test scheme is replaced by a scheme of combining an inductive load and an electronic load, and the method can be suitable for load verification test and aging screening test of the motor driver with any load current.

1. The name of the design product: multifunctional test source table (SUM). 2. The use of the design product: a test instrument integrating voltage source, current source, voltmeter, ammeter, ohmmeter and electronic load functions. 3. The design points of the design product: in the front view. 4. The picture or photo that best indicates the design points: front view. 5. The bottom of the design product is not easily visible or not visible during use, so the top view is omitted. 6. Other circumstances that need to be explained: A part of the enlarged view is the enlarged view of A part of the front view.

1. The name of the design product: photovoltaic cell simulator. 2. The use of the design product: the product is a photovoltaic cell simulator, used as an electronic load, suitable for DC output testing of multiple voltage grades, load intervals. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

The invention discloses a precision verification device and a precision verification method of a multichannel impedance measuring instrument for an electrolytic cell. The verification device comprises a power supply module, an electronic load module, an electrolytic bath impedance simulation module, a loop current measurement module and a response voltage measurement module. The verification method adopts the verification device. The beneficial effects of the application are that the DC power supply module, the high-bandwidth energy consumption type electronic load and the electrolytic cell impedance simulation module are combined to form a closed loop verification loop, the loop structure is consistent with a power level measurement scheme of an actual high-power electrolytic cell, the power level simulation capability is provided, and the credibility is high. In addition, precision verification can be carried out on all channels of the multi-channel impedance measuring instrument at the same time, and precision verification of single channels one by one is not needed. The modular structure can be conveniently integrated on an existing measurement platform, the verification process is simplified, the consistency and repeatability of test results are improved, and reliable guarantee is provided for regular precision verification and precision drift prevention of the PEM electrolytic cell.

The present disclosure is directed, in general, to (1) nonlinear optical (NLO) chromophores, including (2) compositions / materials / resistive layers comprising NLO chromophores, and the methods of making the compositions / materials / resistive layers comprising NLO chromophores (e.g., methods of poling and / or drying, and the like), (3) uses of NLO chromophores in electro-optic devices (e.g., electro-optic modulators (EOMs)). NLO chromophores disclosed herein not only have large EO effect, but also have fast modulation speed. In addition, NLO chromophores disclosed herein have superior refractive index, photostability and thermal stability compared to other EO Materials. As a consequence, NLO chromophores herein are particularly suited for use as EO materials in connection with low power and small footprint devices, including devices used in data acquisition systems, analog I / O modules, field transmitters, lab and field instrumentation, servo drive control modules, direct current (DC) power supply, alternating current (AC), and / or electronic load.

The present application belongs to the technical field of non-vehicle charger efficiency testing, and discloses an intelligent program-controlled analog load system, a non-vehicle charger dynamic efficiency testing method, equipment and a medium to solve the problem of testability. The system comprises, connected in turn: a charging behavior portrait modeling module, which clusters high-dimensional charging behavior data based on a SOM network to generate multiple charging behavior portrait categories; a dynamic load simulation module, which generates a corresponding dynamic load curve for each charging behavior portrait category based on GAN and LSTM; a multi-modal load fusion module, which performs collaborative weighted fusion on the dynamic load curves corresponding to each charging behavior portrait category based on the Shapley value in the cooperative game theory to generate a comprehensive multi-modal load curve; and an intelligent program-controlled load generation module, which converts the multi-modal load curve into a power electronic load signal based on power electronic technology and outputs the signal to a power device to generate a physical load.

The invention discloses a method and device for simulating caliper operation and a related product. And obtaining reference data of the calipers for operation under different working conditions, and controlling the electronic load to simulate the calipers for operation based on the reference data to obtain simulation data. And the test is carried out without depending on real calipers, so that the test cost and complexity are reduced. Meanwhile, simulation of caliper operation under the fault working condition is supported, the test scene is expanded, and the test flexibility is improved. And when the difference between the analog data and the reference data is not within the preset range, the reference data is adjusted in time. And controlling the electronic load to simulate the operation again based on the adjusted reference data until the difference is within a preset range. The simulation data is highly consistent with the reference data of the real calipers, so that the brake system controller can be accurately and reliably tested under different working conditions under the condition that the test link does not depend on the reality.