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Gain scaling method, dynamic impedance testing method, apparatus, and medium
This application relates to the field of radio frequency (RF) power supply technology, and discloses a gain calibration method, a dynamic impedance testing method, equipment, and dielectric. The gain calibration method includes: acquiring multiple RF power measurements, where the RF power measurements are the output power measurements of an RF power supply in an open-loop state under multiple load impedance values; performing two-dimensional interpolation fitting in the complex plane of reflection coefficient based on the load impedance values and the RF power measurements to obtain a continuous power distribution; selecting a minimum RF power value in the complex plane of reflection coefficient based on the continuous power distribution to obtain a target minimum RF power value; and calculating the gain of the RF power supply based on the target minimum RF power value, the load impedance value corresponding to the target minimum RF power value, and a preset characteristic impedance value. The embodiments of this application can improve the accuracy of RF power supply gain calibration and reduce the impact of environmental noise and small impedance fluctuations.
Owner:SHENZHEN CSL VACUUM SCI & TECH CO LTD
AI spectrum monitoring and early warning system and method for power key device performance degradation
This invention discloses an AI-based spectral monitoring and early warning system and method for performance degradation of key power supply components, relating to the field of power supply component performance monitoring technology. The system includes the following steps: Under high-temperature, high-carrier excitation conditions, a phase-continuous mapping field characterizing nonlinear interactions is generated by establishing a time-frequency coherent baseline of multi-source signals and injecting micro-amplitude phase perturbations; a cross-scale energy differential inversion chain is constructed based on this mapping field to extract energy residuals and identify transient energy aggregations; a dynamic pseudo-peak constraint chain is formed through envelope self-reflection calibration; further, time-frequency drift correction and dynamic weight refeedback are performed to generate an adaptive health matrix; finally, the energy spectrum is topologicalized, and continuous monitoring and intelligent early warning of degradation risks are achieved based on topological perturbations. This invention achieves proactive identification and intelligent early warning of power supply component degradation by dynamically fusing energy and phase characteristics through time-frequency drift correction and the topological health matrix, thereby improving the accuracy of performance degradation monitoring for key power supply components.
Owner:SHENZHEN GREAT ENERGY TECH
A high-precision testing device for switching power supply
ActiveCN224399570UElectrical measurement instrument detailsPower supply testingSignal conditioningHemt circuits
The utility model discloses a kind of test devices, belong to switching power supply technical field, specifically related to a kind of switching power supply high-precision test device, comprising: signal acquisition module, signal conditioning module, AD conversion module and control module;The utility model processes the voltage signal and current signal of acquisition by signal conditioning module, to further guarantee the accuracy of each acquisition signal, and can inhibit the generation of noise and error, while signal conditioning module in the signal of incoming acquisition is handled, measured signal is converted into digitalizable voltage signal, and according to different signal passage gear attenuation amplitude, gain is carried out respectively by program-controlled gain circuit, finally the component of aliasing frequency in the level signal of output is filtered out by anti-aliasing filter circuit, eliminate aliasing in band and prevent dynamic performance reduction;So the utility model can carry out high-precision monitoring according to different signals, to guarantee the stability and accuracy of test device work.
Owner:WUXI OU RUIJIE ELECTRONIC TECH CO LTD
Power supply apparatus, electrical system, and temperature measurement method for power supply apparatus
A power supply apparatus (100) comprises an inverter (110), voltage and current measuring devices (120a, 120b), a temperature sensor (130), and an operation circuit (140). The inverter (110) comprises change-over switches (SW1-SW6). The voltage and current measuring devices (120a, 120b) are configured to measure the voltage (V1) and the current (I1) on the change-over switches (SW1-SW6). The temperature sensor (130) is configured to measure an initial temperature (T[0]) in an initial state. The operation circuit (140) is coupled to the voltage and current measuring devices (120a, 120b) and the temperature sensor (130). The operation circuit (140) is configured to: execute a power model (142), and calculate a first transient power of the change-over switches (SW1-SW6) on the basis of the initial temperature (T[0]), the voltage (V1), and the current (I1); and execute a thermal model (144), and calculate a first transient ideal temperature of the change-over switches (SW1-SW6) on basis of the first transient power. The power supply apparatus (100) calculates, in real time, the transient temperature of channel interfaces of the change-over switches (SW1-SW6) by measuring the voltage (V1) and the current (I1) on the change-over switches (SW1-SW6) of the inverter (110). The present invention also relates to a temperature measurement method (500) for a power supply apparatus, and an electrical system (ES1).
Owner:DELTA ELECTRONICS INC(CN)
Estimating parameter values of an intermediate circuit
A method comprises discharging electrical energy from an intermediate circuit comprised in the apparatus, measuring a direct current voltage, and inputting measured values to a parameter estimator for the intermediate circuit. The parameter estimator comprises at least a first parameter and a second parameter whose values are determined based on an equivalent capacitance value of the intermediate circuit, an equivalent resistance value of the intermediate circuit and an electrical load power value of the intermediate circuit, the parameter estimator outputting values for time constant and values for power-to-capacitance ratio of the intermediate circuit. The method further comprises storing values at least temporarily for condition monitoring.
Owner:ABB (SCHWEIZ) AG
Monitoring solutions for electrical systems
A method for probing a circuit breaker electrically connected to an electric line is described. The method comprises injecting one or more first signals at a first point of said electric line, wherein said one or more first signals have frequency content at least partially included in a predefined frequency range. The method further comprises detecting one or more second signals at a second point of said electric line, wherein said one or more second signals are detected with a detection frequency band calculated based on said frequency range. The method further comprises calculating a frequency response function indicative of a frequency response of said electric line in said frequency range based on the detected one or more second signals.
Owner:ABB (SCHWEIZ) AG
Machine learning-based degradation optimization framework
Techniques for machine learning-based degradation optimization are disclosed. In embodiments, a method includes identifying a power module, wherein the power module is controlled with a set of variables; determining, using functional relations of degradation of a degradation machine learning model, optimal set-point values that minimize degradation of the power module while utilizing minimal resources; and reducing a degradation rate of the power module by adjusting one or more of the variables that control the power module based on the determined optimal set-point values.
Owner:C3 AI INC
An integrated circuit end-of-life method and system based on dynamic power consumption compensation
PendingCN122131127AElectronic circuit testingElectrical measurement instrument detailsVoltage dropVoltage contrast
This invention belongs to the field of integrated circuit testing and semiconductor manufacturing quality control technology, and discloses an integrated circuit final testing method and system based on dynamic power consumption compensation. The method includes the following steps: acquiring power consumption prediction data for each test vector in the test program; querying a lookup table to obtain the expected voltage drop value corresponding to each test vector; performing feedforward pre-compensation on the supply voltage based on the expected voltage drop value before testing; monitoring the actual voltage at the power supply pin in real time during testing; comparing the actual voltage with the target voltage to generate an error signal; performing feedback fine-tuning compensation on the supply voltage based on the error signal; and collecting the actual voltage drop value under each test vector after testing, iteratively updating the expected voltage drop value of the corresponding test vector in the lookup table based on the deviation between the actual voltage drop value and the corresponding expected voltage drop value. This invention can solve the problems of test misjudgment, low yield, and insufficient test coverage caused by IR drop in traditional testing methods.
Owner:SINO IC TECH CO LTD +1
Product testing tool with multifunctional clamping structure
Owner:深圳市科赛自动化有限公司
Method and system for degradation prediction of a power device assembly
The present invention related to the field of degradation and / or failure prediction, and more specifically to the field of prediction of degradation and / or failure of power devices and assemblies comprising power devices. The method according to the invention comprises a pre-phase creating a data model for determining the degradation level of a power device; a calibration phase wherein the data model is used to provide a set of power devices with known degradation levels which are used to create a database of behavior signatures of power device assemblies; and a run-time phase determining the remaining lifetime of an installed power device assembly in use. A system suitable for executing the method is provided.
Owner:RISE RES INST OF SWEDEN AB
Improved monitoring solutions for electrical systems
The present invention relates to a method for probing a circuit breaker electrically connected between a first line section and a second line section of an electric line. The method comprises the following steps: - a first step of injecting one or more first signals at a first point of said electric line, wherein said one or more first signals have frequency content at least partially included in a predefined frequency range; - a second step of detecting one or more second signals at a second point of said electric line, wherein said one or more second signals are detected with a detection frequency band calculated based on said frequency range; - a third step of calculating a frequency response function of said electric line in said frequency range based on the detected one or more second signals.
Owner:ABB (SCHWEIZ) AG
Method and control unit for operating a charger for a vehicle
Method and apparatus for operating a charger with electromechanical switching elements (Sx), wherein a faulty electromechanical switching element (Sx) in the charger (100) is detected as a function of a current determined by means of one of the current sensors (Ax) and an error signal (F) is output after detection of a faulty electromechanical switching element (Sx).
Owner:ROBERT BOSCH GMBH
A radio frequency output lock detection system for a radio frequency power supply
ActiveCN224366169UEfficient and fast detectioneasy to controlPower supply testingMeasurement instrument housing
The utility model relates to a radio frequency output locking detection system for radio frequency power supply, contain radiator (1), PCB detection board (5), joint adapter (7) and output limiting mechanism, PCB detection board (5) install on the surface of radiator (1), and output limiting mechanism installs on radiator (1), and the connector of output limiting mechanism is connected with PCB detection board (5) through joint adapter (7). The utility model relates to a radio frequency output locking detection system for radio frequency power supply, and it can reliably and effectively lock the detection of the radio frequency output end of radio frequency power supply.
Owner:TIANJUN MAKER (JIANGSU) CO LTD
Universal LED power supply aging test tool carrier
ActiveCN224399568UEasy to fixEasy to batch testPower supply testingMeasurement instrument housingProduct testingFixed frame
The utility model provides a general type LED power supply ageing test frock carrier relates to LED power supply product test equipment technical field, including fixed frame, product electric connection input part, product electric connection output part, butt joint test connecting part, at least one product fixed part, product electric connection input part, product electric connection output part all are fixedly connected on the upper surface of fixed frame, product electric connection output part is away from product electric connection input part, product electric connection input part, product electric connection output part all are electrically connected with butt joint test connecting part, butt joint test connecting part fixedly connected in one side of fixed frame, product fixed part is fixedly connected with fixed frame and is located between product electric connection input part and product electric connection output part, this general type LED power supply ageing test frock carrier can be used in the same batch's fixation of the LED power supply product of different shapes in the automatic detection equipment, to facilitate the batch detection of LED power supply product to the automatic equipment.
Owner:深圳市科赛自动化有限公司
Operations for fault detection in adjustable frequency drives using neutral voltage monitoring and automatic frequency drives using the same
Adjustable frequency drives (AFDs) and methods of operating the same are described. An AFD includes a plurality of inverters having first terminals that are coupled to respective phases of a motor and having AC output terminals connected to one another at an AC neutral node. A voltage at the AC neutral node is detected. A root-mean-squared (RMS) voltage measurement is generated from the detected voltage. A potential ground fault is identified responsive to the generated RMS measurement. The AFD is controlled responsive to identification of the ground fault. Identifying a potential ground fault responsive to the generated RMS voltage measurement may include comparing the RMS voltage measurement to a reference value.
Owner:EATON INTELLIGENT POWER LTD
A method and system for monitoring residual current of an alternating current power supply for a station
This invention discloses a method and system for monitoring residual current of AC power supply in stations, relating to the field of electrical parameter measurement technology. The method includes: performing micro-amplitude reference self-check and acquisition deviation correction based on a time-scale aligned monitoring set; stitching together the spectral domains of low-frequency and high-frequency channels to generate a wideband calibrated residual current set; extracting frequency domain and transient features from the wideband calibrated residual current set; and using gated fusion to perform sparse inversion localization to obtain suspected abnormal feeders and target feature vectors; performing hierarchical cause discrimination based on the target feature vectors and suspected abnormal feeders; quantifying the deviation degree of the target feature vectors; and generating a handling judgment set. This invention generates self-check response records and forms acquisition deviation correction information through micro-amplitude reference self-check, achieving consistent calibration correction between low-frequency and high-frequency channel data to obtain a wideband calibrated residual current set, thereby stabilizing the wideband measurement reference.
Owner:HANGZHOU ZHILI ELECTRIC CO LTD
A method and device for identifying battery cell leakage in a power system
ActiveCN116659756BDetection of fluid at leakage pointPower supply testingTesting MethodsBattery cell
This invention belongs to the field of vehicle fault analysis, specifically relating to a method and device for identifying battery cell leakage in a power system. This method addresses the insulation fault conditions and characteristics caused by battery cell leakage. It utilizes the data characteristic of frequent alternation between normal and abnormal resistance values during battery cell leakage, characterizing the variability of battery cell leakage through parameters related to the insulation normal and abnormal time periods. Simultaneously, it leverages the fact that abnormal values of positive and negative electrode insulation resistance tend to stabilize with little change, while the absolute value of the difference between insulation resistance reductions caused by other reasons is much greater than in the case of battery cell leakage. The stability of battery cell leakage is characterized by the sum of the absolute values of the differences between the current sampling time's positive and negative electrode insulation resistance and the insulation resistance value at the previous sampling time. Therefore, the battery cell leakage identification method of this invention can judge fault data from multiple data feature perspectives, improving the reliability and accuracy of battery cell leakage identification.
Owner:ZHENGZHOU YUTONG BUS CO LTD
Commissioning of a test arrangement
Test arrangement, which includes test components interconnected via a data bus safer, and method of operating the test arrangement. Test components of the test devices are connected according to a specified test configuration; at least one test device having a functional-test unit is defined as an initiator device; all test components connected to the data bus are determined and stored as a test-component list in the initiator device; the test-component list is transmitted to a verification unit connected to the initiator device and displayed; the displayed test-component list is checked; the displayed test-component list is confirmed when it corresponds to the specified test configuration, and the test-component list is transmitted as a user configuration list to the initiator device and compared with the test-component list; and the test arrangement is brought into a ready-for-operation state when the user configuration list received corresponds to the stored test-component list.
Owner:OMICRON ELECTRONICS GMBH
Anomaly detection device
To provide an abnormality detection device which can eliminate a pull-up resistor for voltage monitoring.SOLUTION: A pull-down resistor Rdu is composed of two voltage dividing resistors Rdu1 and Rdu2 which divide voltage between an inter-arm connection point Nu being a connection point between an upper arm element 61 and a lower arm element 64 and the ground, and connects the inter-arm connection point Nu and the ground. A determination unit 25 detects abnormality of at least the upper arm element 61 and the lower arm element 64 based on voltage of a voltage dividing point Du being the connection point of the two voltage dividing resistors Rdu1 and Rdu2. A power supply line Lp and the inter-arm connection point are not connected through a pull-up resistor. The determination unit 25 detects ON fastening abnormality and OFF fastening abnormality of the upper arm element 61 and the lower arm element 64 based on voltage of the voltage dividing point Du when leak current IL flows to the ground from an upper arm element drive circuit 31 through the pull-down resistor Rdu during operation of the upper arm element drive circuit 31.SELECTED DRAWING: Figure 2
Owner:DENSO CORP
Fault diagnosis method for fuel cell uninterruptible power supply system and storage medium
ActiveCN119125898BDetermine timely and accurateEnsure scientific and efficientPower supply testingComplex mathematical operationsFuel cellsUninterruptible power supply
The application discloses a kind of fuel cell uninterruptible power supply system fault diagnosis method and storage medium.Therein method includes: obtaining the historical fault data and real-time operation data of fuel cell;According to historical fault data based on the hybrid model constructed in advance, determine the correlation coefficient threshold;According to real-time operation data based on the hybrid model constructed in advance, calculate actual correlation coefficient;According to the size relation of actual correlation coefficient and correlation coefficient threshold, determine whether fuel cell uninterruptible power supply system fails.Compared with traditional fault diagnosis method, the technical scheme provided in the embodiment of the application can more scientifically and efficiently determine the operating state of fuel cell UPS system, solves the problem that traditional fault diagnosis method depends on experience judgment and has certain limitations, leads to the poor reliability of fuel cell UPS system operation, effectively improves the reliability and safety of fuel cell UPS system operation.
Owner:GUANGDONG POWER GRID CO LTD +1
Hardware fault monitoring circuit
A fault detection circuit provides hardware-based fault detection to a system including power electronics. The fault detection circuit includes sensor interfaces and scaling amplifiers to scale sensor outputs for comparison to reference voltages at respective comparators. Logic levels output from the comparators are received at logic gate circuits and used to determine a master logic level that is used to control a gate driver, thereby directing response to the detection of a fault by the fault detection circuit. The fault detection circuit can be included in a motor controller such as a motor controller of a hydraulic power pack.
Owner:EATON INTELLIGENT POWER LTD
A voltage acquisition circuit, a bipolar direct current power supply and a voltage acquisition method
PendingCN122193677ADirection of current indicationVoltage polarity indication
The application discloses a voltage acquisition circuit, a bipolar direct-current power supply and a voltage acquisition method. A voltage difference between a near-end voltage and a far-end voltage is calculated by a subtracter. First, second and third switch switching units combine the positive and negative states of a power supply output voltage to switch the connection relationship between the voltage difference output by a positive voltage compensation voltage unit, a negative voltage compensation voltage unit and the subtracter and two input ends of a comparator. When a positive voltage is output, the positive voltage compensation voltage unit is connected to the inverting input end of the comparator, and the output end of the subtracter is connected to the non-inverting input end of the comparator; when a negative voltage is output by the power supply, the negative voltage compensation voltage unit is connected to the non-inverting input end of the comparator, and the output end of the subtracter is connected to the inverting input end of the comparator. A control unit determines whether far-end sensing sampling is normal according to the high and low levels of an abnormal comparison voltage output by the comparator. The application can identify the situations of disconnection and reverse connection when the bipolar direct-current power supply outputs a negative voltage.
Owner:HUNAN NEXT GENERATION INSTRUMENTAL T&C TECH CO LTD
Power supply abnormality alarm device
This utility model discloses a power supply abnormality alarm device, comprising: a power supply module for outputting stable 5V and 12V voltages; a charging detection module configured to connect to an external power source and charge a lithium battery, switching to lithium battery power supply when the external power supply is abnormal; a main control unit configured to trigger alarm actions based on voltage status; an audible and visual alarm module indicating power supply status through sound signals and light color changes; a wireless communication module transmitting power outage alarm information including location information to a designated terminal via wireless transmission when power supply is abnormal; and a testing and maintenance module including test pads connected to each operating voltage and status indicator LEDs for voltage visualization monitoring and maintenance, and also including a reserved interface module. This utility model belongs to the field of power supply alarm technology, specifically providing a solution to the problems of delayed fault response, low troubleshooting efficiency, and insufficient scalability in existing technologies.
Owner:HENAN COMM INVESTMENT GRP CO LTD SANMENXIA BRANCH
A method for detecting the health status of power supply in new energy vehicles
ActiveCN121763158BSolve the problem of incomplete extractionImprove effectivenessBiological modelsPower supply testingTime domainNew energy
This invention discloses a method for detecting the health status of a new energy vehicle power supply, belonging to the field of power supply technology. The invention first extracts abnormal current signals from the phase line current signals of the three-phase inverter of the new energy vehicle power supply at different scale windows. It then extracts amplitude dispersion values from the frequency domain, calculates the three-phase frequency domain cumulative values, generates frequency domain amplitude dispersion weights, and constructs a multi-scale frequency domain feature matrix and weight matrix. Next, it extracts effective abrupt change values from the time domain, calculates the three-phase time domain cumulative values, generates time domain abrupt change weights, and constructs a multi-scale time domain feature matrix and weight matrix. Finally, it fuses the feature matrix and weight matrix of the same dimension, inputs them into a fault detection neural network for processing, and outputs the power supply health status. This invention improves the sensitivity and accuracy of early power supply fault identification, effectively reducing the probability of false positives and false negatives.
Owner:MEISHAN VOCATIONAL & TECH COLLEGE (MEISHAN TECHNICIAN COLLEGE)
A fault detection circuit and energy storage power supply
ActiveCN224329214UBatteries circuit arrangementsEmergency protective circuit arrangementsHemt circuitsControl theory
The utility model relates to the technical field of energy storage power supply mainly provides fault detection circuit and energy storage power supply, and this fault detection circuit includes detection module, and the sampling module and drive module connected with detection module respectively, sampling module and drive module still all are connected with bridge circuit. Sampling module is used for gathering the current signal of bridge circuit, and first voltage signal and / or second voltage signal are exported based on the state output of current signal. When bridge circuit does not appear the fault, detection module will receive first voltage signal and second voltage signal alternately, thereby making drive module control bridge circuit normal work. When bridge circuit appears the fault, sampling module only exports first / second voltage signal, detection module will make drive module control bridge circuit stop working at this moment. Based on this, namely can close the drive of bridge circuit when bridge circuit appears the fault, to avoid appearing power tube breakdown and so on phenomenon in bridge circuit, thereby improved the reliability of energy storage power supply.
Owner:SHENZHEN POWEROAK NEWENER CO LTD
Integrated Circuit Power Supply Redundancy Self-Healing Control Method and Device
ActiveCN122092644AImprove monitoring accuracyovercome errorPower supply testingPower conversion systemsEvaluation resultControl signal
This specification provides an integrated circuit power supply analytical redundancy self-healing control method and apparatus. The integrated circuit power supply analytical redundancy self-healing control method includes: acquiring the current operating data and historical operating data at multiple historical moments collected by various sensors in an aging bench monitoring system; extracting fusion features from the historical operating data and the current operating data; processing the highly discrete data in the operating data and the prediction results of the operating data from the previous moment to obtain the prediction results of the operating data at the current moment; performing multi-task state evaluation based on the operating data, fusion features, and the prediction results of the operating data at the current moment to generate evaluation results of the output voltage, ripple voltage, and health status of the secondary power supply; updating the parameters of the PID controller based on the evaluation results; calculating and outputting control signals through the updated PID controller to perform self-healing control of the output power of the secondary power supply.
Owner:HANGZHOU INTERNATIONAL INNOVATION INSTITUTE OF BEIHANG UNIVERSITY
METHOD AND DEVICE FOR MONITORING A MULTI-CHIP POWER MODULE
ActiveDE602018091791T2Power supply testingIndividual semiconductor device testingBiochemistryBiomedical engineering
Owner:MITSUBISHI ELECTRIC CORP
A power state monitoring and thermal protection circuit based on FPGA
ActiveCN224319065UEmergency protective arrangement detailsEmergency protective arrangements for automatic disconnectionLevel shiftingHemt circuits
The utility model discloses a power state monitoring and thermal protection circuit based on FPGA, including analog signal acquisition module, AD signal conversion module, level conversion module, logic discrimination module, power module and reset module, analog signal acquisition module and AD signal conversion module's analog signal input electric connection, AD signal conversion module's digital signal output respectively with level conversion module's input electric connection, level conversion module's output respectively with logic discrimination module's parallel data input pin electric connection, power module and logic discrimination module's auxiliary power input pin, kernel power input pin, I / O power input pin electric connection, reset module and logic discrimination module's reset pin and configuration complete pin electric connection. The utility model can solve the technical problem of the existing fixed threshold's thermal protection circuit technology lack of dynamic analysis ability to temperature variation trend, and easy to produce the misoperation or protection lag.
Owner:JIANGSU NENGYAN ELECTRIC CO LTD
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