95 results about "Electronic energy" patented technology

The invention relates to a DRU-MMC receiving end high-frequency oscillation suppression method and device. The method comprises the following steps: detecting an alternating current system side impedance and detecting whether an alternating current system side voltage has an oscillation trend or not; if it is judged that oscillation occurs, a reverse damping voltage needed to be output theoretically is calculated according to the alternating current system side impedance and serves as a voltage outer ring instruction value; tracking the generated voltage outer loop instruction value and outputting a modulation signal; driving pulses of all bridge arms of the power electronic energy converter are generated according to the modulation signals, so that the series converter is controlled to output active damping to counteract damping on the alternating current system side; according to the detected alternating current system side voltage, the positive sequence voltage phase and the angular frequency of the alternating current system side grid connection point are extracted, the positive sequence voltage phase is used for modulating module phase input, and the angular frequency is used for calculating the reverse damping voltage needed to be output theoretically. Impedance remodeling can be carried out according to the possible oscillation frequency, the positive damping characteristic is presented, and therefore the good oscillation suppression effect is achieved.

Thermionic generators are described herein that include a variety of features that allow the devices to efficiently and effectively convert large amounts of thermal energy directly to electrical energy, such as in the form of currents and / or voltages. For example, the thermionic generators can be used to generate an electron beam from a thermionic emission device, and focus or shape the electron beam in such a way that allows the energy of electrons in the electron beam to be captured and converted to electrical energy.

A quantifiable electromagnetic relay includes a housing, a PCB board, and two leading-out pieces extending from an inside to a first side of the housing and connected to a contact assembly inside the housing; one leading-out piece includes a plate-like sampling resistor piece made of high resistivity materials and conductive pieces connected at two ends of the sampling resistor piece, two sampling pins extending in the same direction are arranged at the two ends of the sampling resistor piece; the PCB board is connected to two sampling pins; a through-hole is provided in the sampling resistor piece. An induced current generated by a first closed loop formed by the through-hole offsets an induced current generated by a second closed loop formed by the sampling resistor piece, the sampling pins, and the PCB board in the external alternating magnetic field, thereby enhancing the relay's ability to resist interference.

Systems and methods for simultaneous phase-contrast imaging and electron energy loss spectroscopy. The method and system for imaging a sample with charged particles include guiding charged particles toward the sample along a principal axis, and simultaneously detecting a first portion and a second portion of the charged particles transmitted through the sample using a first detector and a second detector, respectively. The second detector is positioned downstream of the first detector. Each of the transmitted charged particles exits the sample at an exit angle between the direction of the transmitted charged particle and the principal axis. The exit angle of the first portion of the transmitted charged particle overlaps with the exit angle of the second portion of the transmitted charged particle. In this way, complementary information, such as structural and compositional information, can be obtained simultaneously.

The invention provides an improved camera for electron diffraction pattern analysis, and particularly relates to a device for detecting a Kikuchi diffraction pattern. The apparatus comprises: an electron column adapted to provide, in use, an electron beam directed toward the sample, the electron beam having an energy in the range of 2 keV to 50 keV, and; an imaging detector for receiving and counting electrons from the sample due to the interaction of the electron beam with the sample, the detector comprising an array of pixels and having a count rate capability of at least 2000 electrons per second for each pixel wherein: the imaging detector is adapted to provide electron energy filtering of the received electrons, the particle detector has an active region and a diffraction pattern for counting received electrons representing said diffraction pattern, and the particle detector has an inert layer on a surface on which electrons enter towards the active region of the detector, where the inert layer disperses the detection energy of 20 keV incident electrons having an energy dispersion of a full width at half maximum of less than 3.2 keV. The invention also provides a method for detecting the Kikuchi diffraction pattern.

A picking system and method includes an article storage, a picking station, a conveying system, a drive system, a control system and an energy supply system. The picking system further comprises an electronic energy saving module, with which the picking system can be switched from a normal operating mode to an energy saving mode and vice versa. The energy saving module is further configured for a) masking, suppressing or automatically acknowledging error messages when switching from the energy saving mode to the normal operating mode, and / or b) suppressing or automatically acknowledging error diagnosis functions or troubleshooting functions when switching from the energy saving mode to the normal operating mode, and / or c) providing an error message acknowledgement element when switching from the energy saving mode to the normal operating mode, by means of which multiple error messages can be acknowledged at the same time.

The invention discloses a thin-film photovoltaic module and a method for improving the photoelectric conversion efficiency of the thin-film photovoltaic module, and the thin-film photovoltaic module comprises a glass layer, a front electrode layer, a power generation layer and a back electrode layer which are sequentially stacked together. The method for improving the photoelectric conversion efficiency of the thin-film photovoltaic module comprises the following steps: sequentially performing P1 and P2 scribing on a front electrode layer and a power generation layer of the thin-film photovoltaic module, and dividing the front electrode layer and the power generation layer into a plurality of independent sub-battery blocks; light emitted by a light source is controlled to penetrate through a plurality of independent sub-battery blocks obtained through the P1 scribed line and the P2 scribed line, so that the light is absorbed and converted into electron energy, and current is generated; respectively testing the current of the plurality of independent sub-battery blocks, and comparing the current of each sub-battery block with a current threshold to screen out abnormal sub-battery blocks of which the current is smaller than the current threshold; and controlling the back electrode layer of the thin film photovoltaic module to carry out P3 scribing, and skipping the screened abnormal sub-cell blocks during P3 scribing.

The invention relates to the technical field of power electronic conversion control methods, in particular to a parallel bridge arm current-equalizing and heat-equalizing method based on alternate rest control, which is particularly suitable for power electronic energy conversion equipment, and can realize current-equalizing and heat-equalizing of parallel bridge arms by implementing a serialized alternate rest mechanism of the parallel bridge arms and accurately regulating and controlling the alternate rest duration of each bridge arm. Even under the conditions of significant parameter mismatch and complex working condition disturbance, each parallel bridge arm can still maintain balance between quiescent current (effective value) and heat productivity. The feedback correction relation between the rotation rest time and the bridge arm current is introduced, feedback is updated in real time, and the more optimized current-sharing and soaking effect is achieved; the reference alternate rest time of each bridge arm can ensure the current sharing effect on the fundamental wave frequency, higher harmonics can be introduced through alternate rest control, and the current sharing effect can be kept within the full bandwidth range and under different working conditions. According to the method, the design of complete decoupling from the main body control loop is adopted, the current sharing performance is ensured, the main body control loop is not interfered, and the stability of equipment is not influenced.

The present application relates to the field of power system control and power electronic energy storage technology, in particular to a generator set transient power compensation system and method thereof, the method comprising: collecting stator voltage, stator current, rotor angular velocity, power angle and DC bus voltage, and mapping into a generalized state vector; constructing a port-controlled Hamilton system model containing an initial interconnection matrix and an initial damping matrix based on preset physical parameters and obtaining a Hamilton energy function; taking partial derivative of the Hamilton energy function with respect to the generalized state vector, calculating an energy gradient vector, dynamically reconstructing a virtual interconnection matrix and a virtual damping matrix, analyzing control input and converting into a duty cycle command to send to an energy storage converter to perform transient power compensation; the system comprises a data acquisition module, a Hamilton energy controller and an energy storage converter; faster transient recovery, lower mechanical stress and more stable closed-loop response can be achieved.

The invention discloses an electron cyclotron synchronous acceleration method and system based on dynamic magnetic field modulation, belongs to the technical field of particle acceleration, and aims to solve the problems that in the prior art, the magnetic field adjustment precision is low, and the stability of the acceleration process is difficult to guarantee due to the non-uniform frequency change of the magnetic field in the dynamic magnetic field modulation process. Comprising the following steps: S1, monitoring electron energy change in real time; s2, dynamically adjusting magnetic field intensity and distribution based on energy change; s3, adjusting the electromagnetic wave frequency to be matched with the electron cyclotron frequency; s4, optimizing space-time distribution of the magnetic field; the electronic energy change is accurately matched, the acceleration energy loss is greatly reduced, the speed and position of the electron beam are tracked through high-precision detection equipment by means of the energy monitoring module, the electronic energy change information is acquired and calculated in real time, and accurate data support is provided for magnetic field adjustment; after receiving the energy data, the control unit drives the magnetic field adjusting module to dynamically adjust the magnetic field intensity to ensure that the electron cyclotron frequency is always synchronous with the magnetic field.

The application discloses a mixed dose calculation method based on an electron energy deposition kernel, Monte Carlo simulation is adopted for photons, the collision and transportation process is simulated in detail, different methods are adopted according to the energy of electrons, the dose distribution of low-energy and medium-energy electrons with energy lower than a threshold value in space is calculated by using a pre-calculated energy deposition kernel, and Monte Carlo transportation is carried out for high-energy electrons, and the energy deposition kernel is used when the energy of the high-energy electrons is reduced to the threshold value. The setting of the energy threshold value in the application influences the precision and speed, the precision is high and the simulation speed is slow when the threshold value is low, the speed is fast and the precision is lower when the threshold value is high, a low energy threshold value is set in a region with relatively high precision requirement, and a high energy threshold value is set in a region with less importance, so that the Monte Carlo-analytical coupling method of the region mixing is realized, and the calculation efficiency is improved while the precision is ensured.

Electronic energy storage manager for controlling the energy input and output of an energy storage device in a motor vehicle that is at least partially powered by the energy of the energy storage device, wherein the energy input and output are carried out depending on a predetermined control operating strategy with a predetermined maximum permissible charging stroke and / or a predetermined maximum permissible energy storage load, wherein the energy storage manager provides a power mode with a power operating strategy that deviates from the control operating strategy and can be activated on demand, and wherein, when the power mode is activated, a larger charging stroke is permitted during energy input and output compared to the maximum permissible charging stroke in the control operating strategy, characterized in thatthat the maximum permissible charging stroke and / or the maximum permissible energy storage load in performance mode are specified depending on a range desired by the driver, which should be achievable with the energy provided by the energy storage system.

A thermionic energy converter, preferably including an anode and a cathode. An anode of a thermionic energy converter, preferably including an n-type semiconductor, one or more supplemental layers, and an electrical contact. A method for work function reduction and / or thermionic energy conversion, preferably including inputting thermal energy to a thermionic energy converter, illuminating an anode of the thermionic energy converter, thereby preferably reducing a work function of the anode, and extracting electrical power from the system.

The application provides a semiconductor laser and a preparation method thereof. The semiconductor laser comprises, which are sequentially stacked in a first direction, a lower confinement layer, a lower waveguide layer, an electron energy relaxation structure, an active layer, an upper waveguide layer and an upper confinement layer. The electron energy relaxation structure comprises, which are sequentially stacked in the first direction, a first barrier layer, an electron energy relaxation layer and a second barrier layer. The second barrier layer is located between the electron energy relaxation layer and the active layer. The energy level of the conduction band bottom of the first barrier layer and the energy level of the conduction band bottom of the second barrier layer are higher than the energy level of the conduction band bottom of the electron energy relaxation layer respectively.

This invention discloses a control method for a DC heat pump system based on bus voltage, specifically relating to the fields of DC heat pump operation control and power electronic energy management. The method involves real-time acquisition of transient bus voltage change signals, extraction of amplitude disturbance, phase offset rate, and zero-crossing density to construct a bus voltage disturbance feature vector sequence. These feature vectors are then input into a support vector regression model for time series trend fitting, generating a predicted bus voltage curve within a short-term window. Based on the local slope extremes and trend change rate of the predicted curve, potential load jump precursor events are identified. A dynamic response control model is constructed, and the load prediction results are input into this model to generate a pre-response control command set, which is then sent to the actuators in advance. The adjusted bus voltage response is monitored, and a difference analysis is performed between the adjusted and predicted curves. The support vector regression model parameters are dynamically adjusted based on the error trend to achieve online self-learning optimization.

A system configured to provide a non-thermal plasma from a variety of feed gases is described. The system includes a plasma applicator; a feed gas source providing a gas flow to the plasma applicator; a power supply configured to deliver electrical power via a transmission line to an electrode of the plasma applicator; a signal generator configured to provide a drive signal to the power supply; and a controller. The controller is configured to receive at least one input status parameter associated with a quality of plasma delivered by the plasma applicator; and provide at least one parameter value for at least one parameter defining an output signal waveform of the power supply. The at least one parameter value is taken from the group consisting of: duty factor, pulse rate, pulse width, pulse delay, pulse modulation and pulse shape.

A method for measuring an atomic scale microscopic thermal conductivity, said method being based on a focused ion beam-based sample preparation method and scanning transmission electron microscopy-electron energy loss spectroscopy. A temperature gradient is generated by locally heating a sample in a scanning transmission electron microscope; the temperature is measured in the electron microscope by means of electron energy loss spectrums; local heating in a nano-scale region of a sample is realized, and a stable temperature field having a large temperature gradient is constructed; and atomically resolved phonon spectrum detection and temperature measurement are realized in space. Local temperature information and a relative value of a microscopic thermal conductivity can be measured at an atomic scale, so that the quantitative analysis of the microscopic thermal conductivities of structures at different positions inside the sample can be performed; and the present invention has the advantages of accurate measurement, high spatial resolution, capability of studying nano-scale thermal transport and micro-zone thermal conductivity, etc., and is suitable for samples having complex structures and a plurality of material systems.

The invention discloses a hydrogen sulfide fluorescent probe for diagnosing Parkinson's disease, and belongs to the technical field of biomedical detection. The probe is a product formed by combining chloroplatinic acid or a salt thereof with bipyrazine or bipyridine or a derivative thereof through a Pt-N bond, and can specifically form a Pt-S bond with H2S through platinum ions to trigger the electron energy level change of a ligand so as to change the fluorescence intensity. In a Parkinson's disease model, the fluorescence intensity of the probe is enhanced due to increase of the H2S level of the intestinal tract. The invention solves the problems of high cost and strong hysteresis of the existing diagnosis technology, is suitable for early screening of Parkinson's disease, and is beneficial to reducing the risk of illness and reducing the treatment cost.

Provided are a computer program, an information processing method, and an information processing device capable of anticipating estimation of a substrate processing state on the basis of spectral data measured during substrate processing.　A computer program according to the present embodiment causes a computer to execute: processing for acquiring spectral data measured pertaining to substrate processing; processing for separating the acquired spectral data into line spectral data for a plurality of reactive species; and processing for predicting at least one of electron density, electron temperature, or electron energy distribution for each of the reactive species on the basis of the separated line spectral data.

The invention belongs to the technical field of radio wave propagation, and particularly discloses a numerical simulation method for propagation characteristics before and after atmospheric breakdown of high-power microwaves. The electron fluid model comprises a Maxwell equation set, an electron density continuity equation, an electron fluid momentum conservation equation and an electron fluid energy equation, and the evolution process of an electromagnetic field, electron density and electron energy before and after high-power microwave atmospheric breakdown can be calculated by solving the improved electron fluid model. According to the method, a more accurate transport coefficient is adopted according to different atmospheric pressures and initial electron densities, so that the simulation precision can be greatly improved; according to the method, a three-dimensional electromagnetic propagation problem can be converted into a quasi-two-dimensional problem, so that the simulation time is greatly shortened, and the computer memory is saved.

The invention relates to an A-D-A type asymmetric wide-band-gap acceptor material and a preparation method and application thereof. The molecular structure general formula is shown in the following formula I. In the formula I, the A unit is an electron withdrawing group, and the D unit is an electron donating group and is of an asymmetric structure. Due to the asymmetric structure, the molecules have larger dipole moment compared with A-D-A type molecules with similar symmetric structures. Meanwhile, the molecules have strong ultraviolet visible light absorption capacity, high charge transfer performance and appropriate electron energy level, and are suitable for being used as electron acceptor materials to be applied to preparation of organic solar cells.

The application provides a method for in-situ monitoring of active ion deintercalation in an active material. The method comprises: thinning a sample to be tested to below 150 nm by using a FIB technology to obtain a sample to be tested; determining an angle between a preferential orientation path of active ion intercalation and an electron beam by using an EBSD technology, and selecting a grain with an angle of 85°-95° as an in-situ monitoring object; transferring the active metal to a conductive microprobe, oxidizing part of the active metal on the conductive microprobe to form an active metal oxide, and obtaining a negative electrode and an electrolyte attached to the conductive microprobe; fixing the sample to be tested at a fixed end of a sample rod of an in-situ TEM tester, fixing the negative electrode and the electrolyte at a moving end thereof, and building a solid-state battery in a field of view of the tester; connecting the sample to be tested with a negative electrode of an external power supply, connecting the negative electrode with a positive electrode of the external power supply, applying a voltage to the solid-state battery, and collecting electron energy loss spectra at different positions in the grain of the active material to be tested.

The application discloses a method for improving cycle performance of a manganese-based positive electrode material, a manganese-based positive electrode material prepared by the method and application, and belongs to the technical field of battery preparation. The specific process of improving cycle performance of the manganese-based positive electrode material and the manganese-based positive electrode material prepared by the method is as follows: the spin state of manganese ions in the manganese-based material is reduced, and then the manganese-based positive electrode material is prepared. The combination of different treatment modes in the magnetic field assistance, calcination and plasma treatment changes the electronic energy level structure of the manganese ions, makes the electrons of different spin states re-pair, obtains a new d-orbital electron filling state, changes the spin state of the manganese ions, and the manganese-based positive electrode material with low spin state is prepared. Meanwhile, due to the magnetostriction effect, the lattice constant is reduced, and the force of the TM-O bond is beneficial to be enhanced. In the manganese-based positive electrode material with low spin state, the lattice distortion caused by the Jahn-Teller effect can be significantly reduced, the cycle stability of the material is improved, and the service life of the material is prolonged.

The application relates to the technical field of composite photocatalysts, in particular to a modified g-C3N4 / CuFe2O4 / SnO2 ternary composite photocatalyst, a preparation method and application thereof, which comprises the following steps: S1. mixing anhydrous tin tetrachloride, deionized water and anhydrous ethanol, and stirring until the mixture is uniform; S2. mixing modified particles, a modified catalytic additive, deionized water and anhydrous ethanol, ultrasonic dispersing, and then adding the mixture drop by drop, and ultrasonic dispersing after dropwise addition is completed; S3. constant-temperature reaction of the mixture, centrifugal separation of the solid, cleaning and drying, and finally obtaining the modified g-C3N4 / CuFe2O4 / SnO2 ternary composite photocatalyst. The modified particles (containing the modification effect of a structure modifier) and the modified catalytic additive are cooperatively matched to effectively regulate the electronic energy band structure of g-C3N4, the particle size, the morphology and the pore structure of the overall catalyst, increase the specific surface area of the composite material, provide more surface active sites, widen the visible light response range, timely capture photo-generated electrons, and significantly enhance the separation efficiency of photo-generated carriers.

The invention provides a voltage-resistant monomer and a preparation method thereof, and direct-current breakdown-resistant low-density polyethylene and a preparation method thereof. The voltage-resistant monomer has a structure as shown in a formula I or a formula II, the preparation raw materials are cheap and easy to obtain, the voltage-resistant monomer can be synthesized by a one-step method, the experimental conditions are simple, and the yield is relatively high. After a small amount of the voltage-resistant monomer and the low-density polyethylene are subjected to melt blending, a trap effect can be achieved, and high-energy electron energy can be dissipated, so that the high-voltage direct current breakdown resistance of the low-density polyethylene material is improved. Tests show that the direct current breakdown strength of the direct current breakdown resistant low-density polyethylene material provided by the invention is more than 340KV / mm, the highest direct current breakdown strength reaches 440KV / mm, and compared with the direct current breakdown strength of an unmodified original low-density polyethylene material, the direct current breakdown strength of the direct current breakdown resistant low-density polyethylene material provided by the invention is increased by more than 42KV / mm, and the highest direct current breakdown strength of the direct current breakdown resistant low-density polyethylene material is increased by about 150KV / mm.

Disclosed in the present invention are a correction method and apparatus for an electron collision reaction rate, and a device and a medium. The method comprises: performing calculation on the basis of a Boltzmann equation corresponding to the electron distribution in a six-dimensional phase space, so as to obtain the electron energy distribution in the six-dimensional phase space, and then performing calculation on the basis of the electron energy distribution, so as to obtain electron collision reaction coefficients; on the basis of a preset Poisson equation and a preset particle transport equation, performing calculation to obtain the electric-field distribution and electron density in the six-dimensional phase space; on the basis of the electric-field distribution and the electron density, obtaining a corresponding electron energy transport equation, obtaining, on the basis of the electron energy transport equation, an electron energy loss balance in an inelastic collision process, and then obtaining a correction coefficient for an electron collision reaction rate; and on the basis of the correction coefficient for the electron collision reaction rate and the electron collision reaction coefficients, obtaining a corrected electron collision reaction rate. By means of the present invention, an electron collision reaction rate can be corrected.

The invention discloses a preparation method and application of a transition metal ion doped CdSe / ZnS core-shell quantum dot, according to the method, transition metal ions are controllably introduced into a host CdSe / ZnS material forbidden band as a magazine energy level so as to create a new electron energy level, and meanwhile, the number of defect energy levels of the CdSe core quantum dot is remarkably reduced; and a light-emitting mechanism is successfully converted from band-edge exciton recombination to non-radiative transition recombination. And the dependence of the luminescence performance on the physical size of the quantum dot is eliminated. Due to the characteristic, the material has the excellent temperature response characteristic: the material has wide-spectrum and tunable luminescence, huge Stokes shift to eliminate self-absorption, excellent light stability and long fluorescence lifetime, and has the potential of low toxicity. Due to the advantages, the material has a huge application prospect in the fields of biological imaging, fluorescence detection, solid-state illumination and the like.

The invention relates to a polymer and a synthesis method and application thereof, and belongs to the technical field of organic semiconductor materials, the polymer is a D-A copolymerization-based polymer, an electron donating unit thiophene is substituted by an ester group, on one hand, the ester group can well adjust the electron energy level, the intermolecular interaction and the hydrophobicity, and on the other hand, the ester group can well adjust the electron energy level; on the other hand, the solubility of the material can be promoted, and when the material is applied to an organic solar cell as a donor material, the photoelectric property of a device can be improved.

Systems, devices, methods, algorithms, and techniques are described for energy loss spectra at relatively large energy losses. A method includes modifying an acceleration voltage of a system source from a first energy to a second energy. The method may include modifying one or more optical elements of the system according to the calibration of the second energy. The method may include generating a set of operating conditions for the projection optics system. The method may include modifying one or more elements of the projection optics system to at least partially comply with the set of operating conditions. The method may include modifying a condenser lens of the system in accordance with focusing a charged particle beam onto a sample location. The method may also include modifying the acceleration voltage from the second energy to the first energy.

To reduce a processing time required for performing density functional theory calculation.SOLUTION: An information processing apparatus 100 stores a first condition that can be a convergence condition related to a density functional theory calculation 111. The first condition is, for example, that a difference ratio of a total electron energy based on an electron density updated last to a representative value of the total electron energy based on the electron density updated at an initial stage of the density functional theory calculation is equal to or less than a first threshold value. The information processing apparatus 100 performs the density functional theory calculation 111 of repeatedly updating the electron density. At this time, specifically, the information processing apparatus 100 repeatedly updates the electron density until the first condition is satisfied.SELECTED DRAWING: Figure 1