20 results about "Power added" patented technology

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 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.

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 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 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.

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 a distributed large-scale system of an all-vanadium redox flow battery, comprising a main electrical energy storage center, power distribution subsystems and a control subsystem. If the power of the power distribution subsystem does not meet a preset power requirement and / or the distance between the power distribution subsystem and the main electrical energy storage center exceeds a preset distance, a sub electric energy storage center connected with the main electrical energy storage center is arranged in the power distribution subsystem. The power distribution subsystem comprises an electric energy load point and / or an electric energy access point. The main electrical energy storage center and the plurality of power distribution subsystems are electrically connected with the control subsystem respectively. The power supply system has the effect of meeting the power increase and decrease requirements of a plurality of distributed external loads or power supply systems.

Embodiments of the present disclosure provide methods and apparatuses for power control. A method implemented at a network node includes determining a power backoff value for a first wireless device based on at least one of: a number of wireless devices including the first wireless device, and a maximum power increase estimated in an overlap region where two or more beams will overlap, wherein wireless devices including the first wireless device are jointly scheduled by the network node, wherein one of the two or more beams is used for the first wireless device. The method further includes transmitting a message or data through the beam for the first wireless device, wherein an output power of the beam for the first wireless device is controlled based on the power backoff value for the first wireless device.

The invention discloses a leakage current early warning method and device, equipment, a storage medium and a product, and relates to the technical field of power system safety management, and the disclosed leakage current early warning method comprises the steps: determining a leakage current increment according to target leakage current data and historical leakage current data at a main switch; if the leakage current increment is larger than the leakage current safety threshold value, according to the active power increment at the main switch, the electric leakage equipment type is determined, and the electric leakage equipment type comprises single-phase equipment or three-phase equipment; if the electric leakage equipment is single-phase equipment, determining target electric leakage equipment according to the active power increment and the power factor increment of a target phase connected with the single-phase equipment; generating early warning information of the target electric leakage equipment; the technical problem that the safety of an electrical system is low due to the fact that early warning is not carried out in advance when current leakage happens to the electrical system is solved, and the safety of the electrical system is improved.

The invention provides an electric power supply system, a control method thereof, a moving object, and a computer program product. When DC power supply from a first power generation device (14a) to a first electric power supply circuit (18a) is cut off, a control device (30) performs first electric power suppression control on a first inverter (15a) and performs first electric power increase control on a second inverter (15b). The first electric power suppression control is to control the electric power supplied from the first inverter to the first motor (17a) to be smaller than the electric power supplied from the first power generation device to the first electric power supply circuit before the DC power supply is cut off. The first electric power increase control is to control the electric power supplied from the second inverter to the first motor to be greater than the DC power supply from the first power generation device to the first electric power supply circuit before the cut-off. Therefore, when the DC power supply from the first power generation device to the first electric power supply circuit is cut off, the output torque of the first motor can be prevented from being reduced.

The embodiment of the invention provides a range extender output power control method and device, electronic equipment, a storage medium and a program product. The method comprises the steps that when it is detected that music is played in a cab of a target vehicle, a music signal of the played music is collected, and a music score file corresponding to the music signal is obtained; generating a note track diagram of the played music according to the music score file; the note track diagram is used for recording the tracks of the notes in the played music along with the time change; obtaining a mapping relation between the notes and the output power of the range extender, and converting the note track diagram into a range extender output power control sequence based on the mapping relation; and dynamically adjusting the output power of the range extender in the target vehicle in real time according to the range extender output power control sequence. By adopting the method, the output power of the range extender can be efficiently and intelligently controlled, and the fun of driving experience is increased.

The application relates to an adjustable adaptive bias circuit for a power amplifier, which comprises a bias voltage generating circuit and a positive feedback voltage dividing circuit; the bias voltage generating circuit generates a bias voltage input to the positive feedback voltage dividing circuit, and the bias voltage input to the positive feedback voltage dividing circuit is adjusted through an adjustable current source in the bias voltage generating circuit; the positive feedback voltage dividing circuit forms a positive feedback mechanism through voltage division on a gate bias voltage Vcs input to the power amplifier, which automatically increases with the increase of input power, so that the power amplifier maintains high transconductance and gain at large power output, thereby inhibiting the gain compression phenomenon and realizing adaptive bias control. The circuit structure is simple, can realize real-time sensing of output power change and adaptive adjustment of the size of the bias voltage, dynamically enhances the bias voltage with the increase of the output power, thereby effectively offsets the gain compression effect, and maintains high and stable gain output in a wide power range.

The invention relates to the technical field of electric vehicle charging equipment, in particular to a distributed station-level power limiting method for charging equipment, which comprises the following steps of: constructing a decentralized communication architecture, performing peer-to-peer communication on all the charging equipment through a CAN (Controller Area Network) bus, and realizing equipment state synchronization and offline detection through a heartbeat frame mechanism. The distributed consistency problem is solved through a version number arbitration algorithm, it is ensured that the power of the whole station does not exceed the limit when part of equipment is offline through an offline partition mechanism, dynamic fair power distribution is achieved through a proportional compression algorithm, a decentralized architecture is adopted, all charging equipment participates in power limitation in a peer-to-peer mode, main control equipment is not needed, and the power distribution efficiency is improved. When any equipment fails or is offline, the power limiting function of other equipment cannot be influenced, the reliability of the system is remarkably improved, the current station-level power limiting value and the station-level total maximum power are automatically obtained through heartbeat frames and a passive synchronization mechanism, and when the equipment is increased or decreased, only the station-level total maximum power configuration needs to be updated on any equipment, so that the operation is simple and convenient. And one-by-one configuration is not needed.

A photovoltaic inverter and a control method thereof, and a photovoltaic system. The photovoltaic inverter system includes a voltage conversion circuit, an inverter circuit, and a controller. The controller is configured to increase, based on an output power of the inverter circuit in a current time period and an output power of the inverter circuit in a first time period, an output power of the inverter circuit when the voltage conversion circuit does not work in a maximum power state. An increase of the output power of the inverter circuit is an estimated power increment value of the inverter circuit so as to stably increase an output power of the inverter while ensuring stable operation of the inverter and safe use of a power component, and improve power supply efficiency of the photovoltaic system.

The application relates to a two-dimensional spatial multiplexing power amplifier circuit which comprises an input power division network, a two-dimensional spatial multiplexing module, an output synthesis network and the like. The input power division network distributes signals to each two-dimensional spatial multiplexing module for signal amplification. The two-dimensional spatial multiplexing module is characterized in that adjacent multiple amplification units or transmitting units are placed in the same area, and then m*N amplification units or transmitting units are realized in N areas, so that the power synthesis is miniaturized, and signals are sent to the output synthesis network. The output synthesis network connects the outputs of the two-dimensional spatial multiplexing modules, and outputs the power synthesized output signals. Compared with the conventional power synthesis technical scheme, the application has a more compact area, can realize output power increase times under the same area, or save 50% of the area under the same output power, can greatly reduce the on-chip power synthesis implementation cost, and through the mutual decoupling of the embedded transformer and the peripheral transformer parameters, the design is more simple and convenient, and the design efficiency is improved.

A battery depletion prevention module configured to be coupled to a medication delivery device is provided. In some embodiments, the battery depletion prevention module comprises: an actuator; and a processing circuit comprising: a microcontroller; a battery configured to supply power to the microcontroller; and a power control module comprising a timer and at least one switch. In some embodiments, in response to the actuator switching to an engaged state: the power-on switch is configured to close, thereby causing an increase in power supplied by the battery to the microcontroller, and the timer is configured to be activated. In some embodiments, in response to the actuator remaining in the engaged state for a threshold amount of time since activation of the timer, the power control module is configured to switch to a power-off state, thereby causing a decrease in power supplied by the battery to the microcontroller.

The application discloses a kind of combined cycle unit cold end optimization methods considering unit operation state deviation, comprising the following steps: calculating the theoretical back pressure value and unit net power increase value under each cold end operating mode, and the system correction value obtained by calculating theoretical back pressure value;Based on system correction value, obtain the corrected theoretical back pressure value under each cold end operating mode, and then obtain the corrected theoretical optimal back pressure and corresponding optimal cold end operating mode and as initial optimization result;The rationality of initial optimization result is checked, and the final optimization result is determined based on the checking result.The application can obtain a higher accuracy calculation result by collecting system operating parameters to correct the system deviation caused by the change of unit operation state;And it also has good applicability to the operating conditions of extreme situations such as accident blowdown, condenser vacuum leakage, etc.