68 results about "Power added" patented technology

The invention discloses a residual capacity harmonic compensation method for a household single-phase optical storage cooperative converter, and belongs to the technical field of converter control. The invention aims to provide a dynamic harmonic compensation method for household single-phase photovoltaic energy storage under limited power capacity and a residual capacity harmonic compensation method for a household single-phase photovoltaic energy storage cooperative converter based on an energy management harmonic priority compensation strategy. The household single-phase optical storage cooperative converter adopts a harmonic current priority compensation strategy, and the core of the harmonic current priority compensation strategy is to increase the residual current margin of a grid-connected inverter by utilizing photovoltaic load shedding and controlling the energy storage charging power, so that harmonic waves are completely compensated. Through a dynamic harmonic current compensation technology, when the output current of the grid-connected inverter exceeds a rated value, the harmonic current value is reduced through a harmonic current compensation factor, so that the output harmonic current value of the inverter is flexibly limited, and the harmonic current is compensated to the maximum extent while the grid-connected inverter works normally.

The invention relates to a super-capacitor-based flicker suppression method for a network construction type STATCOM (Static Synchronous Compensator). The method comprises the steps of network construction outer ring control, fundamental current control and harmonic current control, a virtual synchronous machine VSG control algorithm is adopted for network construction outer ring control, the frequency modulation characteristic and the inertia damping characteristic are decoupled, and the suppression of the active power high-frequency fluctuation quantity through a super capacitor serves as an effective means for flicker suppression; load harmonic current control open-loop control and closed-loop control are combined to achieve an optimal control effect, a first-order differential link and a second-order low-pass filter are cascaded to serve as a correction link, open-loop control gain is improved, resonance between a passive filter and a power grid is suppressed, a second-order low-pass filter link is added to reactive power of a PCC (point of common coupling), and the optimal control effect is achieved. The problem of harmonic amplification caused by the fact that the fundamental reactive power compensation speed is too high and conflicts with a harmonic rapid compensation link is avoided; the flicker suppression effect and the harmonic compensation rate are improved, and pollution of an arc load to a power grid is reduced.

The present application provides a data transmission method, a radio frequency device, and a control device. The method may be performed by the radio frequency device or by a chip in the radio frequency device. The method includes a step of the radio frequency device obtaining a transmission power. The transmission power is determined based on a first power increase information and a second power increase information. The first power increase information indicates a first power increase amplitude corresponding to a first standard in a time unit. The second power increase information indicates a second power increase amplitude corresponding to a second standard in a time unit. The radio frequency device transmits data corresponding to the time unit based on the transmission power. The first standard and the second standard are different baseband practical standards. This can improve the flexibility of data transmission by the system.

An apparatus is provided which comprises at least one processor, and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: receive a carrier wave transmission modulated by an ambient internet of things device in an ambient internet of things session, determine whether a received power of the carrier wave transmission is below a predetermined threshold; and in response to determination that the received power is below the predetermined threshold, prepare a notification requesting to control at least one carrier wave transmission characteristic such that the received power is increased, and transmit the notification to a carrier wave provider transmitting the carrier wave transmission or to a session control unit controlling the ambient internet of things session.

The invention belongs to the technical field of direct-current power transmission of a power system, and provides a large-scale new energy cluster black-start steady-state control method and system, and the method comprises the steps: unlocking a receiving-end MMC when the capacitor voltage of a half-bridge sub-module is consistent with the capacitor voltage of a full-bridge sub-module, and unlocking a sending-end MMC after the charging of all sub-module capacitors is completed, the DC voltage of the sending end MMC is adjusted based on the cooperative control of the new energy unit and the sending end MMC, when the DC voltage is adjusted to 0, the DC voltage is adjusted to 1.05 p.u. Based on the receiving end hybrid MMC, the diode uncontrolled rectification is successfully input, the DC voltage is adjusted to a rated value from 1.05 p.u. Based on the receiving end MMC, the power of the new energy station is increased, and the power of the new energy station is increased. And black start is completed until the large-scale new energy cluster sending-out topology recovers normal operation, the sending-end hybrid MMC operates at constant zero direct-current voltage by adjusting the alternating-current voltage amplitude of the new energy station, and black start steady-state control is completed.

The invention relates to the technical field of chip coating, in particular to a chip coating uniformity control system and method.The method comprises the steps that the characteristics of an adjustable magnet are adjusted on line, and a chip is coated under vacuum; verifying whether the film thickness uniformity is changed or not based on the chip coating film thickness uniformity; according to the method, the sputtering speed can be increased by adjusting the magnetic field intensity of the adjustable magnet and enhancing the magnetic field intensity within a certain range, the requirement that the film thickness uniformity difference is about 1% can be met, and the target material sputtering position quality is improved. The film thickness uniformity deviation of target sputter coating can be effectively reduced, the film thickness uniformity is improved, and the problems that according to an existing method for adjusting the film thickness uniformity of a chip by adding a baffle, the target consumed power is increased, and the cost is increased are solved.

The invention discloses a power supply circuit and electronic equipment, and relates to the technical field of display. The power circuit comprises a first power module and a second power module. The input end of the first power module is used for receiving power voltage. The output end of the first power module is connected with the input end of the second power module, the output end of the second power module is used for providing power supply voltage for the display driving module, and the display driving module is used for driving a screen to display images. Wherein under the condition that the at least two strings of batteries provide a power supply voltage with a wide input voltage range, the first power supply module is added, the power supply voltage is subjected to voltage reduction conversion, the second power supply module is subjected to voltage boosting conversion to form a power supply voltage, and the power supply voltage enables the display driving module to drive the screen to display an image. The power supply circuit can meet low-voltage-withstanding power supply, and the power supply voltage is firstly reduced and then increased, so that the lowest power supply voltage of the display driving module can be met, the voltage is reduced when a screen is in light load, the output power is increased, and the power supply efficiency in light load is improved.

The invention relates to a two-dimensional spatial multiplexing multi-path synthesis power amplifier circuit, which comprises an input power division network for distributing signals to each path of two-dimensional spatial multiplexing module for signal amplification; the two-dimensional space multiplexing module is used for placing the adjacent multi-path amplifying units or transmitting units in the same area, so that m * N paths of amplifying units or transmitting units are realized in N paths of areas, power synthesis miniaturization is realized, and signals are sent to an output synthesis network; and the output synthesis network is connected with the outputs of the two-dimensional spatial multiplexing modules, and outputs the output signals after power synthesis. Compared with a conventional power synthesis technical scheme, the area is more compact, the output power can be doubled under the same area, or the area is saved by 50% under the same output power, the on-chip power synthesis implementation cost can be greatly reduced, the design is simpler and more convenient through mutual decoupling of parameters of the embedded transformer and the peripheral transformer, and the power synthesis efficiency is improved. The design efficiency is improved.

The invention discloses a self-adaptive calculation method and system for the conversion efficiency of electrical equipment of a charging station based on load prediction, and the method comprises the steps: collecting load fluctuation condition data, current and voltage values and power factor information from the electrical equipment of the charging station in real time, and constructing an initial data set, obtaining a basic characteristic value of load change based on the initial data set; using a long short-term memory network model to predict a load fluctuation trend within a preset time, and determining an accuracy range of a load prediction result in combination with historical data and current and voltage values collected in real time; aiming at a load prediction result, constructing a calculation model of power factor deviation, and calculating a deviation value of a current power factor and an ideal value by utilizing a predicted load fluctuation trend and real-time monitoring data to obtain a specific numerical value of the power factor deviation; and if the specific value of the power factor deviation exceeds a preset threshold range, parameter adjustment is carried out, a targeted reactive power compensation instruction is generated, and the adjusted reactive power increment is determined.

The present invention discloses an energy-saving and parallel superposition wiring method for a three-phase CSR rectifier circuit in which two windings are output on the low-voltage side of a power distribution transformer, the two windings respectively supply power to two CSR half-bridge rectifier circuits, the voltages of the two windings are equal, and the phases of the corresponding phases are the same. Each of the windings has a set of CSR non-full-bridge circuits, and each of the two sets of CSR non-full-bridge circuits operates during its respective operating time, and the corresponding angular interval of the operating time is 60°, forming an interactive mode, where the times complement each other to complete the full-bridge CSR high-frequency rectification function. The present invention provides an energy-saving and parallel superposition wiring method for a three-phase CSR rectifier circuit with reduced switch tubes, reduced power consumption, high withstand voltage, large power factor, small harmonics, and increased power.

Various embodiments of the present application are directed towards a group III-V device including a rough buffer layer. The rough buffer layer overlies a silicon substrate, a buffer structure overlies the rough buffer layer, and a heterojunction structure overlies the buffer structure. The buffer structure causes band bending and formation of a two-dimensional hole gas (2DHG) in the rough buffer layer. The rough buffer layer includes silicon or some other suitable semiconductor material and, in some embodiments, is doped. A top surface of the rough buffer layer and / or a bottom surface of the rough buffer layer is / are rough to promote carrier scattering along the top and bottom surfaces. The carrier scattering reduces carrier mobility and increases resistance at the 2DHG. The increased resistance increases an overall resistance of the silicon substrate, which reduces substrate loses and increases a power added efficiency (PAE).

The utility model provides a kind of control system and superconducting magnet of superconducting magnet, and the intermediate node of the current drop resistor in its current drop circuit is connected to one end of the current drop resistor by second switch, and the resistance in current drop circuit can be adjusted by controlling the state of second switch, when quench protection, open second switch, maximize current drop power;When the current of coil is current drop adjusted, control second switch is closed, reduce current drop power, adapt current drop adjustment demand, and response is fast.The superconducting magnet of the utility model can provide a variety of different current drop power, increase the regulation and control precision when superconducting magnet coil is abnormal or quench, can effectively improve work stability and monocrystalline silicon crystal pulling quality.

A power module comprises a circuit board frame, a ceramic-based circuit board and a lower-layer circuit board which are welded into a whole through bonding pads. The ceramic-based circuit board further comprises two or more than two wafers in one group, and bottom surface bonding pads of the two or more than two wafers are welded on the top circuit layer of the lower circuit board, correspondingly connected with one group of bonding pads on the top circuit layer of the lower circuit board and located in a space defined by the circuit board frame, the ceramic-based circuit board and the lower circuit board. By adopting a ceramic-based circuit board, a wafer is packaged in a module by using a laminated circuit board; the ceramic-based circuit board is adopted, so that the heat of the wafer can be transferred out more quickly, and the working power of the module is improved; the cushion block is added, so that the thickness of the module can be flexibly adjusted to adapt to the thickness of a wafer, the process requirement of the circuit board frame is reduced, and the production stability is improved.

Redundant mechatronic system, wherein: - the redundant mechatronic system (2) is designed as a two-channel system and is connected or connectable to a mechanical arrangement for the delivery of varying mechanical power, - both channels each have a power supply (12.1, 12.2) or a common power supply is connected upstream of both channels, - both channels each contain a control circuit (11.1, 11.2) and are controllable by means of at least one control unit (13), - the control unit (13) acts on the control circuits (11.1, 11.2) such that the control circuits (11.1, 11.2) each switch an electrical power specified by the control unit (13) and obtained from the power supply (12.1, 12.2) to each winding set (10.1, 10.2) of at least one electrically operated actuator in order to generate the mechanical power, - the two channels are operated in parallel during normal operation. suchthat each channel provides half of the currently available mechanical power, - each of the two channels is designed such that, in the event of failure of the other channel, it alone provides the maximum mechanical power required to fulfill a function of the mechanical arrangement, wherein the redundant mechatronic system (2) has arrangements connected to the control unit (13) by means of which overloads in the channels and / or the components of the channels and / or in the mechanical arrangement can be detected by the control unit (13), - when an overload is detected by means of the control unit (13), a reduction factor (Rf) counteracting the overload can be determined and applied by means of the control unit (13), - the reduction factor (Rf) is dimensioned such that, when the reduction factor (Rf) is applied by the control unit (13), the maximum available system power of both channels is sufficient to fulfill the function,- the channel power can be controlled by the control unit (13) using the reduction factor (Rf) as a control variable, such that the respective current channel power counteracts the overload, characterized in that, by means of the control unit (13) of the redundant mechatronic system (2), the reduction factor (Rf) can be set in the mechanical arrangement when an overload occurs, such that when applied by the control unit (13), the power is reduced in one channel and increased in the other channel by the same amount, alternating over time.

This radio frequency device (2), configured to perform at least one radio frequency function, comprises a metallic structure (4) defining an internal volume, at least one power injection element (16) at an inlet of the metallic structure (4), and at least one power extraction element (18) at an outlet of the metallic structure (4), arranged such that an electromagnetic wave is capable of propagating from said power injection element (16) to said power extraction element (18), at least a portion of the internal volume defined by the metallic structure (4) being filled with a solid dielectric foam (24) having a relative dielectric permittivity of less than 1.5. (See Figure 1 for abbreviations.)

The invention relates to a power amplifier, in particular to a bipolar power amplifier and a preparation method thereof. Comprising a P-type substrate, and a plurality of N + type buried layers are arranged on the upper surface of the P-type substrate; the upper surface of the P-type substrate is provided with a plurality of first P + expansion regions and an N-type epitaxial layer located on the surface of the P-type substrate and the upper surface of the N + type buried layer; a second P + expansion region and a first N + expansion region are arranged on the upper surface of the N-type epitaxial layer; a second N + expansion region is arranged on the upper surface of the second P + expansion region; silicon dioxide layers are arranged on the upper surfaces of the first P + expansion region, the second P + expansion region, the N-type epitaxial layer, the first N + expansion region and the second N + expansion region; a plurality of wiring terminals are arranged on the surface of the silicon dioxide layer, and the lower end faces of the wiring terminals penetrate through the silicon dioxide layer and are connected with the second P + expansion area, the second N + expansion area and the first N + expansion area respectively. The high-frequency efficiency of the power amplifier can be improved from 65% to 80%, and the output power is increased by 30%.

The present invention provides a better power supply system, a mobile device having a better power supply system, a method for controlling a better power supply system, and a program for causing a computer to execute the method for controlling a better power supply system. [Solution] In the power supply system 10, when the supply of DC power from the first power generator 14a to the first power supply circuit 18a is interrupted, the control device 30 performs a first power suppression control on the first inverter 15a to reduce the power supplied to the first motor 17a from the first inverter 15a to less than the power supplied to the first power supply circuit from the first power generator before the interruption occurred, and performs a second power increase control on the second inverter 15b to increase the power supplied to the first motor from the second inverter 15b to more than the power supplied to the first power supply circuit from the first power generator before the interruption occurred.

The invention provides a power distribution system off-grid process emergency frequency control optimization decision method and system, and belongs to the technical field of power distribution network system frequency control. An average system frequency response model of a power distribution system is established, and based on a reasonable assumption that active power added by the system is approximately linearly increased along with time, frequency deviation is approximated to a quadratic function; and performing open-loop processing on the frequency response model to obtain an open-loop model, performing decision-making on the control quantity of the rapid power control resource in the power distribution system, establishing a power distribution system emergency frequency control optimization model, and solving to obtain a decision-making emergency control scheme under the condition of lowest emergency control measure cost. According to the method, open-loop processing of the frequency response model is realized, the expression of the lowest point of the frequency and the added active power of the system is obtained, the control quantity of the rapid power control resource in the power distribution system is decided, and the system frequency safety index and the like are ensured to meet the requirements under the condition that the emergency control measure cost is lowest.

A wireless power receiving device includes power receiving coils, power receiving resonance circuits, and rectifier circuits. The power receiving coils each generate a power receiving current by being coupled to an external magnetic field. Each power receiving resonance circuit includes a power receiving coil and a capacitor. The rectifier circuits are connected to the power receiving resonance circuits and rectify resonance currents, respectively. The power receiving coils are planar spiral coils, and the power receiving coils are cylindrical solenoid coils. The power receiving coils and the power receiving coils are disposed in a state where a direction orthogonal to a plane of the spiral coil and axes of cylindrical shapes of the solenoid coils are not parallel to each other. A power adding circuit adds DC outputs of the rectifier circuits at a subsequent stage of the rectifier circuits and supplies power to a load.

The application provides a loader control method, system, loader, electronic equipment and storage medium, and belongs to the technical field of loaders, wherein the control method comprises the following steps: after the loader enters an obstacle removal mode, adjusting the boom angle and the bucket angle of the loader to a target boom angle and a target bucket angle respectively; acquiring the hydraulic oil pressure of the loader; determining the resistance suffered by the bucket in the direction parallel to the road surface based on the target boom angle, the target bucket angle and the hydraulic oil pressure; when the resistance is greater than a critical resistance, providing an upward force perpendicular to the road surface to the bucket to reduce the resistance to less than or equal to the critical resistance. The application is used to solve the defects in the prior art that the output power of the engine increases, the bucket is severely worn and the obstacle removal function does not achieve the expected effect when the loader is used to remove obstacles on the road surface, because the influence of factors such as sand accumulation and road undulation on the resistance of the bucket in the horizontal direction of the road surface is not considered.

The embodiment of the invention provides an optical storage system and a reactive power coordination control method. The optical storage system comprises a power grid controller, at least one PCS and at least one inverter. The direct current side of each inverter is connected to the corresponding photovoltaic module, the direct current side of each PCS is connected to the corresponding energy storage module, and the PCS, the alternating current sides of the inverters and the load are electrically connected at the PCC; the power grid controller reduces reactive power output of the PCS and increases reactive power output of the inverters based on the active power and apparent power of each inverter and PCS state information, so that the total reduction amount of the reactive power of the PCS is equal to the total increase amount of the reactive power of the inverters; the PCS state information comprises the reactive power of each PCS, or the reactive power of any PCS and the total number of the PCS. On the basis, the inverter bears the reactive power demand, the problem that the reactive power output capacity of the PCS is limited is solved, the reactive power demand is determined on the basis of the reactive power output of the PCS, and the problem that the inverter is difficult to bear reactive power accurately is solved.

The utility model relates to a power supply additional control system, which is additionally arranged on one side of a direct current bus of a power supply load side current converter and is characterized in that an unloading circuit is used for dissipating excess energy; the signal acquisition circuit is used for detecting power and current on two sides of the load side current converter; the unloading circuit control circuit comprises a logic control and protection module which is used for generating an additional control signal to control a pulse generation module based on a direct current bus current and a load side current value acquired by signals, generating a trigger signal based on a power deviation between an acquired direct current bus power and a load side power, and outputting the trigger signal. And in combination with an additional control signal output by the logic control and protection module, an unloading circuit control signal is output so as to control the switching of the unloading circuit. Compared with the prior art, the control circuit generates signals to control the switching of the unloading circuit, so that redundant power is dissipated, the load side converter is protected from being impacted by large current, the power supply is prevented from being damaged by faults, and the service life of electronic components is prolonged.

The utility model relates to a heat dissipation device, which relates to the field of heat dissipation of electrical equipment and comprises a shell, a fan and a second gravity switch. According to the technical scheme, the second gravity switch is arranged on the fan, the installation efficiency is improved, the cost is reduced and the operability of the second gravity switch is enhanced while the power increase is extremely small and the air volume, the air pressure and the noise are not obviously changed.

An electronic device includes a power amplifier, a power detector, and a bias circuit. The power amplifier amplifies a radio frequency signal from an input end. The power detector is electrically coupled to the input end, detects an input power of the radio frequency signal, and correspondingly outputs a driving voltage according to the input power. The bias circuit is electrically connected with the power amplifier and the power detector, and outputs a first driving current to the power amplifier according to the driving voltage. The power amplifier increases the power of the radio frequency signal from the input power to a target power according to the first driving current.

The present invention discloses a field effect transistor with a pulse power amplifier, comprising an insulating substrate, a conductive channel layer, a source electrode, a gate electrode and a drain electrode, wherein the conductive channel layer is arranged on the upper surface of the insulating substrate, an insulating protective layer is arranged on the upper surface of the conductive channel layer, a first N-type region is arranged on one side inside the insulating protective layer, and a second N-type region is arranged on the other side inside the insulating protective layer, the source electrode covers the upper surface of the first N-type region, the drain electrode covers the upper surface of the second N-type region, the gate electrode is arranged at the center of the surface of the insulating protective layer, a signal amplification region is arranged inside the insulating substrate, and a pulse power amplifier module is arranged inside the signal amplification region. The present invention can increase the output power and the amplitude of the signal, can realize efficient, stable and reliable pulse signal amplification, and can meet the needs of specific applications.

This application relates to the field of charging system technology, specifically to a charging host, charging device, device controller, and power distribution control method. The charging host includes a power bus, a switch matrix, a switch controller, and a control module. Switches are connected to two corresponding power buses, and each switch in one switch matrix is ​​connected to two power buses belonging to different power units. Each switch controller is connected to a corresponding switch matrix. The control module sends corresponding switch control signals and bus charging enable signals to at least one switch controller. The switch controller performs interlock logic judgment on the switch control signals based on the bus charging enable signal; when the interlock logic is met, it controls the specified switch in the switch matrix to perform a switching operation. Through the above configuration, the charging host of this application increases the maximum output power of a single power unit and avoids abnormal series connection between power buses.

This invention relates to a power supply auxiliary control system. The system adds the following components to the DC bus side of the power supply load-side converter: a load unloading circuit for dissipating excess energy; a signal acquisition circuit for detecting power and current on both sides of the load-side converter; and a load unloading circuit control circuit including: a logic control and protection module that generates an auxiliary control signal based on the acquired DC bus current and load-side current values; and a control pulse generation module that generates a trigger signal based on the power deviation between the acquired DC bus power and load-side power, and, combined with the auxiliary control signal output from the logic control and protection module, outputs a load unloading circuit control signal to control the switching of the load unloading circuit. Compared with existing technologies, this invention dissipates excess power by generating a signal through the control circuit to control the switching of the load unloading circuit, protecting the load-side converter from high-current surges, preventing power supply failures and extending the lifespan of its electronic components.

An active heat dissipation power module comprises a lower layer circuit board which is composed of a lower layer circuit board bottom layer circuit layer, a lower layer circuit board ceramic substrate layer and a lower layer circuit board top layer circuit layer. The circuit board also comprises a group of two or more than two MOS tubes or IGBTs, and the group of two or more than two MOS tubes or IGBTs are welded on the bottom circuit layer of the lower circuit board. The upper-layer circuit board is composed of an upper-layer circuit board circuit layer and an upper-layer circuit board ceramic substrate layer; the circuit board further comprises two or more pairs of P-type and N-type semiconductor pairs, and the two ends of the P-type and N-type semiconductors are welded to the top circuit layer of the lower circuit board and the circuit layer of the upper circuit board respectively. The semiconductor refrigeration device is integrated on the power module of a group of MOS (Metal Oxide Semiconductor) tubes or IGBTs (Insulated Gate Bipolar Translator), so that heat generated when the group of MOS tubes or IGBTs works can be actively dissipated, the working efficiency and the power of the power module are improved, and the working duration and the reliability of the group of MOS tubes or IGBTs are increased.

The application relates to the fields of microelectronic, semiconductor and communication technology, and particularly relates to a low-power high-power low-noise amplifier circuit based on a gain expansion effect, which comprises a bias circuit with a gain expansion effect; in the case of keeping low power consumption, the output power is linearly increased with the increase of input power due to the gain expansion effect, so that the output 1dB compression point is improved; wherein a radio frequency signal enters from a radio frequency signal input end, is amplified by an amplifier module, and is finally output from a radio frequency signal output end; the bias circuit with the gain expansion effect provides bias for the amplifier module, so that compared with the prior art, the application can provide a high output 1dB compression point while ensuring the low power consumption performance of the circuit.

This distortion compensation device is disposed between a transmission signal generation unit (1) and a high-frequency power amplifier (4). The distortion compensation device is provided with: a low-regrowth transmission signal generation unit (21) to which a transmission signal from the transmission signal generation unit (1) and an operation status signal of the high-frequency power amplifier (4) are input, and which generates, from the input transmission signal according to the input operation status signal, a low-regrowth transmission signal in which spectrum regrowth, in which power outside a frequency band in a transmission signal output from the high-frequency power amplifier (4) increases when the high-frequency power amplifier (4) operates with low back-off, is suppressed; and a distortion compensation unit (22) that imparts distortion that compensates for a distortion component generated in the high-frequency power amplifier (4) to the low-regrowth transmission signal generated by the low-regrowth transmission signal generation unit (21) to generate a distortion-compensated low-regrowth transmission signal.