258 results about "High frequency power" patented technology

The invention discloses an extended double-side asymmetric phase shift modulation method for a dual-active bridge converter, and belongs to the technical field of isolated high-frequency power conversion in a power electronic technology. According to the symmetric phase shift modulation method, under the condition that the voltage conversion ratio is not matched, the zero voltage switching range of a switching tube is small, the light load efficiency is low, and variable abrupt change can occur during mode switching to cause the uncontrollable oscillation problem of inductive current. The invention provides an extended double-side asymmetric phase shift modulation method for a dual-active bridge converter in a wide voltage range. A multi-objective optimization scheme is established based on the provided modulation method, and an approximation method is provided to solve a full power range analytical solution. A smooth switching method between modes is realized, and uncontrollable oscillation of inductive current can be effectively avoided. And the conversion efficiency in a full-power range is improved.

The invention discloses an island micro-grid frequency coordination control method based on flywheel and battery hybrid energy storage, and provides a hybrid energy storage coordination control method for solving the problem that a diesel generator in an island micro-grid is low in inherent response speed and difficult to deal with rapid load disturbance in time. The method combines the advantages of a flywheel energy storage system (FESS) and a battery energy storage system (BESS) to construct a multi-time-scale frequency regulation mechanism: the FESS is responsible for absorbing or releasing a high-frequency power component and quickly responding to instantaneous fluctuation; the BESS bears an intermediate-frequency power component and realizes medium-term energy regulation; and the diesel generator compensates the low-frequency power component and maintains long-term steady-state operation. Through the multi-unit collaborative hierarchical control, the frequency stability and the operation reliability of the island micro-grid are remarkably improved, the dynamic regulation pressure of the diesel engine is reduced, and the frequent charge-discharge cycle of the battery is reduced, so that the service life of the energy storage system is prolonged.

The invention provides a power distribution method, device and equipment of an electricity-hydrogen hybrid energy storage system and a medium, and belongs to the technical field of energy storage. The electricity-hydrogen hybrid energy storage system comprises a super capacitor, a lithium battery and a hydrogen energy storage subsystem, and the method comprises the following steps: decomposing the total regulation power of the electricity-hydrogen hybrid energy storage system to obtain high-frequency power, intermediate-frequency power and low-frequency power; correcting the high-frequency power according to a first charge state value of the super capacitor to obtain a first power correction value and a first optimal adjustment power of the super capacitor; according to the first power correction value and a second charge state value of the lithium battery, correcting the intermediate frequency power to obtain a second power correction value and a second optimal adjustment power of the lithium battery; and correcting the low-frequency power according to the second power correction value and the health state value of the hydrogen energy storage subsystem to obtain third optimal adjustment power of the hydrogen energy storage subsystem. The energy utilization rate and the operation stability of the electricity-hydrogen hybrid energy storage system can be improved.

A method for providing high frequency high voltage alternating high current to a powered device the operation of which may generate a substantial change in inductance with common switching devices while exceeding their typically characterized datasheet specifications.

A high-frequency power supply system according to the present disclosure supplies high-frequency power to a load. The high-frequency power supply system comprises: a first high-frequency power supply that can supply first high-frequency power to the load by outputting a first high-frequency voltage having a first fundamental frequency from a first high-frequency voltage output unit toward the load; and a first slave device. The first high-frequency power supply has: a first high-frequency power supply setting value information output unit that outputs a first high-frequency power supply setting value corresponding to the elapsed time or a command signal corresponding to the first high-frequency power supply setting value on the basis of first high-frequency power supply setting value information indicating the relationship between the elapsed time from a starting point of a cycle within the time of one cycle of amplitude modulation and the first high-frequency power supply setting value; and a first slave device synchronization signal output unit that outputs a first slave device synchronization signal in accordance with the time at which the first slave device setting value should be changed on the basis of first slave device time information indicating the relationship between the elapsed time and the time at which the first slave device setting value used in the first slave device should be changed. The first slave device has a first slave device setting value information output unit that outputs the first slave device setting value corresponding to the elapsed time or a command signal corresponding to the first slave device setting value on the basis of the first slave device synchronization signal, and first slave device setting value information indicating the relationship between the elapsed time and the first slave device setting value.

This invention relates to the field of power electronics technology, and more particularly to a combined superimposed waveform control system suitable for high-voltage, high-frequency power supplies. The system includes a voltage amplitude control module, a phase angle control module, a modulation signal generation module, and a sorting algorithm module. The voltage amplitude control module takes as input the voltage amplitude setpoint and feedback for each frequency band, and outputs the amplitude of the modulation voltage for each frequency band. The phase control module takes as input the phase setpoint and feedback for each frequency band voltage, and outputs the phase of the modulation voltage for each frequency band. The modulation signal generation module takes as input the amplitude and phase of the modulation voltage for each frequency band, and outputs the target modulation signal required by the high-voltage, high-frequency power supply. The sorting algorithm module takes as input the target modulation signal and the feedback voltage of each module, and outputs the on / off commands for each power module. This invention can effectively avoid the influence of sampling delay and noise, generating a rich variety of voltage waveforms acting on power equipment.

The invention discloses a hybrid energy storage cooperative control method and system for stabilizing new energy fluctuation, and belongs to the technical field of energy storage control, and the method comprises the steps: collecting new energy output data and electric load data on a power supply bus in real time, and calculating a stabilizing error; decomposing the stabilizing error into a high-frequency power instruction, an intermediate-frequency power instruction and a low-frequency power instruction by adopting a variable filtering time constant method; the high-frequency power instruction is sent to a bidirectional converter of a super capacitor, the intermediate-frequency power instruction is sent to a bidirectional converter of lithium ion energy storage, and the low-frequency power instruction is sent to a heat pump electricity storage system; energy storage states of the three hybrid energy storage systems are obtained, and a filtering time constant of a coupling control layer is periodically updated according to a preset safety threshold; through operation strategies of the system super capacitor, the lithium ion energy storage system and the heat pump power storage system, fluctuation stabilization of photovoltaic, wind power and other new energy power stations in different time scales is achieved, and stable output of energy and safe and reliable operation of a power grid are guaranteed.

An impedance matching circuit for a plasma process supply system and a plasma process system, configured for powers≥500 W and frequencies in a range from 2 MHz to 100 MHz, the impedance matching circuit including a matching unit having one or more reactances and a resonator. The impedance matching circuit is configured for operation at a predetermined high frequency (HF) power signal with a predetermined basic frequency and auto-frequency tuning (AFT) bandwidth, limited by a predetermined upper AFT frequency and a predetermined lower AFT frequency. The resonator is configured to not influence the HF power signal at the predetermined basic frequency and to damp the HF power signal and / or influence the HF power signal in a phase at both the predetermined upper and lower AFT frequencies.

The utility model relates to high frequency power converter technical field, concretely is a kind of magnetic core structure suitable for high frequency power converter.The utility model, including coil and fixed frame, the coil is installed in the inner wall of fixed frame, the lower surface of fixed frame is fixedly connected with two connecting seats, the inside of connecting seat is installed with several pins, the inner wall of fixed frame is covered with insulating coating, the inner wall of fixed frame is movably installed with two ferrite magnetic cores, two the ferrite magnetic core adsorbs and connects, the surface of pin is covered with protection tube, the protection tube is silica gel tube, the surface of two the ferrite magnetic core is wound with fixed band, the fixed band is magnetic core fixed band.Solved under high frequency operating condition, the magnetic hysteresis loss and eddy current loss of magnetic core sharply increase, lead to the serious heating of magnetic core, not only reduce the conversion efficiency of power converter, also possibly influence its long-term reliability problem.

The utility model relates to the technical field of electronic power, in particular to a positive and negative voltage output circuit based on coreless transformer isolation, which comprises a cross-coupled oscillation circuit, a coreless transformer and a rectification filter circuit, the cross-coupled oscillation circuit generates sine wave oscillation, and energy is transmitted to a secondary coil through a primary coil of the coreless transformer. The secondary coil adopts a center tap structure, the rectification filter circuit receives signals transmitted by the secondary coil, and stable positive and negative voltage output is realized through rectification and filtering processing. High-efficiency energy transmission is realized through the coreless transformer, the voltage isolation capability is improved, electromagnetic interference is reduced, and the coreless transformer has the advantages of compact structure, low cost, high power density and the like, and is suitable for solid-state switch driving, high-frequency power conversion and other electronic power systems.

The application relates to the field of industrial automation control and discloses an adaptive adjustment method for a grease refining process, which comprises the following steps: synchronously acquiring raw material flow data and load current signals and storing the data into a historical state register sequence; extracting high-frequency power spectrum amplitudes in the load current signals to determine a dynamic correction coefficient reflecting a pipeline slip state; compensating a physical volume model according to the dynamic correction coefficient and calculating material dynamic time delay parameters; reversely searching time sequence associated process parameters in the sequence by using the dynamic time delay parameters; and correcting control gain according to the numerical deviation between the process parameters and the load current signals by a state observer, so as to adjust frying heating power. Through closed-loop compensation of nonlinear rheological characteristics of a transport process, the application ensures that the extracted historical parameters have physical and causal consistency, solves the time delay distortion problem caused by non-uniform materials, and improves system identification accuracy and operation stability.

The application discloses a kind of ultra-wideband high harmonic suppression power amplifier, including low-frequency power amplification branch, high-frequency power amplification branch, harmonic suppression matching network, the harmonic suppression matching network includes low-frequency harmonic suppression matching network, high-frequency harmonic suppression matching network and common output end;The low-frequency power amplification branch, high-frequency power amplification branch respectively to the frequency different low-frequency band signal, high-frequency band signal in work wideband is carried out power amplification, the low-frequency harmonic suppression matching network, high-frequency harmonic suppression matching network respectively to the impedance matching of fundamental wave in low-frequency band signal, high-frequency band signal after power amplification, while inhibiting second and third harmonic signals.The application solves the problem of low power efficiency and poor high-order harmonic suppression in the prior art.

An ultrasound vibrating-type defect detection apparatus (100) for detecting a defect in a semiconductor apparatus (10) is provided with: an ultrasound vibrator (42); a high-frequency power supply (40); a camera (45); and a controller (50) for adjusting the frequency of high-frequency power supplied from the high-frequency power supply (40) to the ultrasound vibrator (42), and for performing detection of a defect in the semiconductor apparatus (10). The controller (50) causes the camera (45) to capture an image of the semiconductor apparatus (10) while varying the frequency of high-frequency power supplied from the high-frequency power supply (40) to the ultrasound vibrator (42), and performs detection of a defect in the semiconductor apparatus (10) on the basis of the captured image.

Capacitorless solid-state power filter for power converters and electrical power systems. The capacitorless solid-state power filter has a high-frequency planar transformer and a high-frequency power converter. The capacitorless solid-state power filter injects voltage harmonics into the output voltage of a power converter or other source of raw voltage to attain a smoothed output voltage suitable for a given electrical load component. The capacitorless solid-state power filter can be implemented with a DC-DC and / or a DC-AC power converter to provide a smoothed output voltage, such as a flat wave (DC) or a sinusoidal wave (AC). The power converter is capable of generating a smoothed output voltage without relying on capacitors. The capacitorless solid-state power filter may be incorporated into different types of electrical power systems, such as marine systems, aeronautic systems, and / or utility power grids.

The present invention provides an apparatus for treating a substrate. The apparatus for treating a substrate may include: a process treatment unit that provides a treatment space in which the substrate is treated; and a plasma generation unit that is provided above the process treatment unit and generates plasma from a process gas. The plasma generation unit includes: a plasma chamber having an electric discharge space formed therein; a shield unit surrounding the exterior of the plasma chamber; an antenna which surrounds the shield unit from the outside of the shield unit and to which high-frequency power is applied; and a connecting unit electrically connecting the shield unit and the antenna.

The invention relates to high-pressure irrigation equipment, belongs to the technical field of irrigation equipment, and aims to solve the problems that the irrigation uniformity coefficient of the irrigation equipment is low, the phenomena of irrigation leakage and over-irrigation are easy to occur in partial areas, and the water flow atomization effect is poor. The high-pressure irrigation equipment comprises a storage battery pack and a driving part arranged on the surface of the storage battery pack, and a bracket is fixedly mounted on the surface of the storage battery pack; an annular coil is fixedly installed in the support, a high-frequency power source is fixedly installed on one side of the support and electrically connected with the annular coil, a water injection pipe is rotationally connected to one side of the storage battery pack, the driving part is in transmission connection with the water injection pipe, a collecting part is fixedly installed at one end of the water injection pipe, and a solar panel is arranged on one side of the collecting part; specific angles are preset for the three pulse nozzles, sprayed high-speed jet flow collides to form a firework-shaped atomization effect, water flow is dispersed into fine and uniform liquid drops, and the problems that traditional irrigation water flow is concentrated, and local wetting is uneven are solved.

Embodiments pertain to a resonant power conversion system comprising switching circuitry configured to convert a low frequency AC power signal to a high frequency AC power signal, power conversion circuitry electrically connected in parallel with a source of the low frequency AC power signal and additionally connected in parallel with a consumer of the high frequency AC power signal. The source and the consumer may be electrically connected in series, and a low-pass filter may be serially connected between an output of the switching circuitry and the source of low frequency AC power signal.

The invention provides a high-frequency power amplifier which can realize miniaturization and broadband. The input signal distributor distributes a high-frequency first input signal into a second input signal and a third input signal. A second input signal is input to the balanced amplifier. And two output ends of the balanced amplifier for outputting two amplified high-frequency signals with a phase difference of 90 degrees are respectively coupled with the first port and the second port. And the control amplifier amplifies the third input signal and outputs the amplified signal from the output end. The output of the control amplifier is coupled to the third port without via a circuit component that affects impedance matching. The balanced amplifier and the control amplifier are supplied with a common power supply voltage. The voltage level of the first input signal when the current output from the control amplifier rises is higher than the voltage level of the first input signal when the current output from the balance amplifier rises. The hybrid coupler varies a load impedance of a balanced amplifier coupled to the first and second ports in accordance with a current level of a high-frequency signal input from the control amplifier to the third port.

The invention relates to a method (100) for adjusting a high-frequency power distribution at two output ports (A3, A4) of a hybrid coupler (16) having two input ports (A1, A2) and two output ports (A3, A4) and three phase shifters (Qphi1, Qphi2, Qphi3), said method (100) comprising: a) generating (102) a first input signal (S1); b) generating (104) a second input signal (S2) that is phase-shifted relative to the first input signal (S1) by a fourth phase angle (phi0); c) coupling (106) the first input signal (S1) into the first input port (A1) and the second input signal (S2) into the second input port (A2); d) adjusting (108) a power distribution of output signals (S3, S4) at the output ports (A3, A4) using one of the phase angles (phi0, phi1, phi2, phi3), and e) out-coupling (110) the first output signal (S3) at the first output port (A3) and the second output signal (S4) at the second output port (A4). The invention also relates to a hybrid coupler (16) designed to carry out the method, to a hybrid coupler system (10), to a hybrid coupler arrangement (18), and to the use thereof.

The application discloses a low-loss planar inductor magnetic core and a design method thereof. The planar inductor magnetic core comprises an upper magnetic yoke and a lower magnetic yoke, a left column, a right column and a middle column. The upper magnetic yoke and the lower magnetic yoke, the left column, the right column and the middle column form a full-enclosed structure on the side surface, eliminating the traditional air gap structure. The upper magnetic yoke and the lower magnetic yoke are made of a first magnetic core material. The left column, the right column and the middle column are made of a second magnetic core material. The magnetic permeability of the first magnetic core material is lower than that of the second magnetic core material. The magnetic resistance of the planar inductor magnetic core is symmetrically distributed about a transverse symmetry axis. The magnetic core has a simple structure and is easy to implement, can significantly reduce the high-frequency copper loss of a high-frequency power magnetic component, and effectively solves the problem that the existing winding structure optimization method for MMF distribution optimization cannot be applied to the inductor.

The application discloses a kind of composite insulation coated metal soft magnetic powder and coating method and application.By system process flow implementation and performance comparison analysis, the soft magnetic powder composite insulation coating technology provided by the application shows significant advantages.Three-layer composite shell structure (flexible buffer layer+insulation layer+nanometer layer) effectively solves the problem of shell microcrack, insulation degradation and high dielectric loss under high frequency, high pressure and high temperature environment in traditional coating.The optimized key data: MLD / Al2O3 / [Al2O3 / HfO2] shell continuity rate reaches 99.8%, bulk resistivity is 5.2*10 9 Ω•cm, 100kHz loss is reduced by 67.1%, salt spray weight loss is only 38% of the control, fully meets the demand of high frequency magnetic device.The application provides a reliable material basis for the miniaturization and high efficiency of high frequency power electronic device.

Methods and systems for forming a low-k material layer on a surface of a substrate and structures and devices formed using the method or system are disclosed. Exemplary methods include providing a substrate within a reaction chamber of a reactor system, providing one or more precursors to the reaction chamber, and providing high frequency, high plasma power to polymerize the one or more precursors to form dense low-k material with desired properties.

A matching device disclosed herein comprises a plurality of reactance elements, a plurality of relays, a ground element, and an inductor element. The plurality of reactance elements are connected to a high frequency supply line for high frequency power for plasma generation. The plurality of relays include a relay coil and a relay switch each having a first contact connected to each of the plurality of reactance elements. A second contact different from the first contacts of some relay switches among the plurality of relay switches is connected to the ground element. A third contact different from the first contacts of the remaining relay switches among the plurality of relay switches is connected to the inductor element and is connected to the high frequency supply line. The plurality of reactance elements include a lower electrode, a dielectric plate, a plurality of first upper electrodes, and a plurality of second upper electrodes.

The invention discloses deposition process equipment and a thin film stress adjusting method. The deposition process equipment comprises a reaction cavity, a spraying plate serving as an upper electrode and a heating disc serving as a lower electrode are arranged in the reaction cavity, and the lower electrode is connected with a high-frequency power source. The deposition process equipment further comprises an insulating part which is connected with the spraying plate and is arranged between the spraying plate and the side wall of the cavity, so that the spraying plate is in an electric suspension state; one end of the impedance adjusting device is connected with the spraying plate, the other end of the impedance adjusting device is connected with the side wall of the cavity, and the impedance adjusting device is used for adjusting the impedance of the spraying plate so as to adjust the plasma field between the spraying plate and the heating disc. According to the invention, the dissipation of high-frequency energy can be reduced, and the retention time of electrons between the upper electrode and the lower electrode is prolonged, so that the film deposition rate is improved, the abnormal stress of film formation can be reduced, the finished product scrapping is reduced, and the production yield is improved.

The invention discloses a V2G-microgrid cooperative scheduling system and method based on an improved particle swarm algorithm, and belongs to the technical field of intelligent microgrid and electric vehicle energy management. In order to solve the problems of slow response of fixed energy storage, low utilization rate of V2G mobile energy storage, uncontrollable battery loss and the like, a V2G electric vehicle and a fixed storage battery are constructed into a hybrid energy storage system, and an improved particle swarm optimization algorithm is adopted for optimization. According to the method, the frequency modulation precision, the operation economy and the battery life are synchronously optimized in a fitness function through a double-layer architecture of optimizing the total power through an upper layer and dynamically distributing instructions through a lower layer. Finally, the V2G cluster responds to high-frequency power fluctuation in a millisecond level, and a basic load is supported in a fixed energy storage minute level, so that advantage complementation is formed. According to the invention, the frequency modulation response speed and the renewable energy consumption capability of the system are effectively improved, the operation cost is reduced, and the service life of the battery is prolonged.

The embodiment of the invention provides a supporting capacitor module, a motor controller, an electric drive system, an automobile and electronic equipment. The supporting capacitor module comprises a first current path passing through the first capacitor bank and a second current path passing through the second capacitor bank. The impedance of the first current path is smaller than that of the second current path in a first frequency interval; in a second frequency interval, the impedance of the first current path is greater than that of the second current path; the first frequency interval is smaller than the second frequency interval; a stray inductance of the first current path is greater than a stray inductance of the second current path. In the ripple current generated when the power switch is turned off, the low-frequency current component mainly passes through the first current path and is absorbed by the first capacitor group, and the high-frequency current component mainly passes through the second current path and is absorbed by the second capacitor group, so that the turn-off instantaneous voltage of the high-frequency power switch can be better stabilized.

A bipolar transistor having a structure capable of thinning a base layer to achieve high speed is provided. A collector layer, a base layer, and an emitter layer are formed on a substrate composed of a compound semiconductor. The emitter layer is disposed inside compared with the edge of the base layer in plan view. A base electrode is disposed on a region of a part of the emitter layer and the base layer to form a path from the inside of the emitter layer to the outside of the base layer in plan view. An insulating film is disposed between a part of the base layer not overlapping the emitter layer and the base electrode. An alloy layer penetrates the emitter layer from the base electrode in the thickness direction and reaches the base layer. The alloy layer contains a part of the constituent elements of the base electrode and the constituent elements of the emitter layer and the above base layer.

The invention discloses a prediction control method for a hybrid energy storage converter, solves the problems of complex control structure and control delay when a storage battery-super capacitor hybrid energy storage converter is controlled in the prior art, and belongs to the technical field of hybrid energy storage converter control. According to the method, a frequency weighting coefficient is added into an evaluation function of the storage battery-super capacitor hybrid energy storage converter, and a frequency weighting evaluation function is constructed. Frequency weighting evaluation is carried out on the output power of the storage battery and the super capacitor at the next moment, automatic power distribution is achieved, no extra filter needs to be arranged, the storage battery bears the low-frequency power of the direct-current bus, power impact can be reduced, the service life is prolonged, and the super capacitor responds to the high-frequency power; the advantage of high power density can be brought into full play to improve the dynamic response capability of direct current bus voltage control, the control structure of the hybrid energy storage converter is simplified, and the control delay is reduced.

The invention provides a pumping unit control system and method, and relates to the technical field of oil field oil extraction equipment control. According to the system, a control module is connected with a high-precision sampling module and a high-frequency power module; the high-precision sampling module is used for sampling the oil pumping unit based on the oversampling rate to obtain sampling data; the control module is used for determining state data of the oil pumping unit based on the sampling data and switching between an open-loop control mode and a closed-loop control mode based on the state data; and the high-frequency power module is used for starting a motor of the oil pumping unit in a closed-loop control mode. The high-precision sampling module and the high-frequency power module are cooperated to work, so that the working performance of the oil pumping unit is fundamentally improved, flexible starting of the oil pumping unit can be realized, heavy-load starting can be realized at ultra-low frequency, and the oil pumping unit can be effectively controlled on the basis that the original unit installed power of the oil pumping unit is not increased or even reduced. And strong instantaneous overload capacity is provided for the oil pumping unit, so that the oil pumping unit can reliably cope with various special working conditions.