8 results about "Leakage energy" patented technology

The embodiment of the invention provides a method for determining storage energy consumption of tasks in a cluster. The method comprises the steps that the number of the tasks running in the cluster is determined; based on the number, determining a first output parameter, a second output parameter and a third output parameter of a power supply for supplying power to the cluster within a first duration; determining idle energy consumption and inherent energy consumption of the cluster based on the first output parameter, the second output parameter and the third output parameter; the inherent energy consumption comprises electric leakage energy consumption and activation energy consumption; determining that the number of tasks running in the cluster is multiple, and obtaining first total energy consumption of the cluster; acquiring a plurality of first energy consumption in one-to-one correspondence with the plurality of tasks; based on the first total energy consumption, the idle energy consumption, the inherent energy consumption and the plurality of first energy consumption, determining a plurality of second energy consumption in one-to-one correspondence with the plurality of tasks; wherein the first energy consumption is the energy consumption generated by the task occupying the processing unit in the cluster within the first duration; the second energy consumption is the energy consumption generated by the task occupying the storage unit in the cluster within the first duration.

The invention discloses a flyback conversion circuit. The flyback conversion circuit comprises an input filter capacitor, a power conversion circuit, a clamping capacitor and an isolated active absorption circuit; the input filter capacitor is used for filtering input voltage; the power conversion circuit comprises a switching tube, a first transformer and a clamping diode; the switching tube is connected with a primary winding of the first transformer in series, the primary winding of the first transformer is used for receiving filtered input voltage, a secondary winding of the first transformer is used for providing output voltage, the clamping diode is connected with the clamping capacitor in series to form a clamping circuit, and the clamping circuit is connected to the two ends of the primary winding of the first transformer in parallel; and the active absorption circuit with isolation is used for providing electrical isolation between the clamping circuit and the input filter capacitor, absorbing leakage inductance energy of the first transformer and feeding back the leakage inductance energy to the input filter capacitor. According to the embodiment of the invention, efficient conversion and active recovery of leakage inductance energy can be realized, and electromagnetic interference can be reduced.

The invention discloses a vehicle-mounted hydrogen system leakage identification method, system and device, a medium and a product, and relates to the field of hydrogen fuel cell vehicle safety monitoring, and the method comprises the steps: obtaining a leakage response signal, including a vibration signal and a deformation strain signal, of a vehicle-mounted hydrogen system pipeline, and carrying out the preprocessing operation; performing frequency domain feature extraction and time domain feature extraction on the preprocessed leakage response signal to obtain frequency domain feature data and time domain feature data; and if the frequency domain characteristic data is located in a preset leakage energy ratio interval and the time domain characteristic data meets a preset pulse leakage judgment condition, judging that the vehicle-mounted hydrogen system leaks and giving an alarm. According to the invention, monitoring is carried out based on pipeline vibration and deformation signals, rapid, accurate and non-intrusive leakage identification of the vehicle-mounted hydrogen system is realized through frequency domain and time domain double-feature fusion judgment, the problems of slow response, easy interference, difficult positioning, risks caused by intrusive measurement and the like are effectively overcome, and the real-time performance and reliability of monitoring are improved.

The application relates to the technical field of valve detection, and discloses a method and system for detecting the air tightness of a ball valve. The method comprises the following steps: in a pressurization and pressure maintenance test, a multi-channel pressure information flow is synchronously collected, and a three-dimensional pressure field dynamic evolution sequence reflecting a pressure transmission process of a sealing interface is constructed. By cross-comparing the sequence with a leakage signal simulation library in a time-frequency domain, a potential leakage characteristic signal is extracted, and reverse tracing analysis of a leakage energy propagation path is carried out, so that the spatial coordinates and energy intensity of a suspected leakage source are determined. Finally, an overall leakage state index is calculated, a sealing state evaluation atlas and a maintenance operation sequence are generated. The method realizes a change from single-point pressure monitoring to three-dimensional pressure field dynamic analysis, can accurately locate a leakage source position, and improves the intuitiveness of detection and the pertinence of maintenance.

The application discloses a kind of vehicle-mounted hydrogen system leakage identification method, system, equipment, medium and product, it is related to hydrogen fuel cell vehicle safety monitoring field, the method includes obtaining the leakage response signal of vehicle-mounted hydrogen system pipeline including vibration signal and deformation strain signal and carries out preprocessing operation;The preprocessed leakage response signal is respectively subjected to frequency domain feature extraction and time domain feature extraction, and frequency domain feature data and time domain feature data are obtained;If frequency domain feature data is located in the preset leakage energy proportion interval, and time domain feature data meets preset pulse discriminant leakage condition, then determine that vehicle-mounted hydrogen system occurs leakage and carries out alarm.The application is monitored based on pipeline vibration and deformation signal, is judged by frequency domain and time domain double feature fusion, realizes the leakage identification of fast, accurate, non-invasive of vehicle-mounted hydrogen system, effectively overcome the problem, such as slow response, easily disturbed, difficult to locate and the risk brought by invasive measurement, improves the real-time and reliability of monitoring.

The invention discloses an LC coupling inductor series connection type direct current boost converter, and belongs to the technical field of power electronic converters. The problem that an existing boost converter is poor in boost capacity is solved. An inductor, a capacitor, a diode and coupling inductors (N1 and N2) are combined in a specific series-cross connection mode to form an integrated high-gain unit. According to the invention, the turn ratio of the coupling inductor is improved and the voltage bootstrap effect of the capacitance-inductance network is utilized, so that high voltage gain can be realized under a medium duty ratio. Meanwhile, leakage inductance energy of the coupling inductor can be automatically and losslessly recycled and utilized through the specific connecting structure, voltage spikes of the switching tube and the diode are effectively restrained, voltage stress is reduced, an additional dissipative absorption circuit is not needed, and therefore the efficiency and reliability of the converter are remarkably improved while the boosting capacity is improved. The method is suitable for DC power conversion occasions requiring high step-up ratio, such as new energy power generation and distributed power supply systems.

The invention discloses a method for calculating the leakage inductance of a high-frequency transformer under non-sinusoidal excitation, and the method comprises the following steps: decomposing a non-sinusoidal high-frequency excitation source introduced into the high-frequency transformer into a plurality of sinusoidal high-frequency excitation sources through Fourier decomposition; according to the winding insulation gap of the high-frequency transformer needing to be calculated, a proper basic algorithm is selected, and the leakage inductance of the small-capacity high-frequency transformer is calculated through two Dowell correction algorithms; the sum of the leakage inductance energy generated by each sine excitation source is equal to the leakage inductance energy generated by the non-sine excitation source; respectively calculating leakage inductance energy of the high-frequency transformer under each high-frequency sine excitation source by using a basic algorithm so as to obtain leakage inductance under each harmonic wave; according to the proportion of the effective value of the harmonic component in the total effective value of the non-sine excitation, performing weighted correction calculation on the basic leakage inductance algorithm to obtain the leakage inductance of the high-frequency transformer under the non-sine excitation; according to the method, the leakage inductance of the high-frequency transformer under non-sine excitation is corrected and calculated, and the precision is greatly improved.

The invention discloses a safety socket based on active pulse injection and energy conservation and a use method of the safety socket. The safety socket comprises a monitoring module and a control module, wherein the monitoring module comprises a current transformer, a built-in NTC (Negative Temperature Coefficient) temperature sensor and an independent high-frequency ADC (Analog to Digital Converter) sampling channel; the protection execution module comprises an electromagnetic release; the electromagnetic release is connected with the control module; the control module comprises a microprocessor with a built-in high-frequency signal generator; the high-frequency signal generator is configured to inject a micro-pulse signal into the power supply loop at a zero crossing point of alternating current; the microprocessor is configured to receive the electrical response data of the power supply loop after the micro-pulse signal is injected so as to calculate a dynamic contact degradation index in real time; meanwhile, live wire and zero wire high-frequency transient electrical data collected by an independent high-frequency ADC sampling channel are received, so that differential leakage energy in a preset time window is calculated; and when the dynamic contact degradation index or the differential leakage energy exceeds a corresponding preset safety threshold value, the microprocessor drives the electromagnetic release to cut off the power supply loop.