46 results about "Power sharing" patented technology

The invention relates to a method for managing power transfer of a turbine engine between a power generation mode and an assistance mode, the turbine engine having a high pressure shaft driving a high pressure electric machine and a low pressure shaft driving a low pressure electric machine, a high pressure power (PHP) being extracted from the high pressure shaft and a low pressure power (PBP) being extracted from the low pressure shaft, the power generation mode corresponding to a predetermined power sharing between the high pressure power and the low pressure power and the assistance mode corresponding to a request for injecting additional power onto the high pressure shaft or the low pressure shaft, in which method, to reach the requested additional power, when the extraction of the high pressure power or the low pressure power is interrupted and the high pressure electric machine or the low pressure electric machine driving the high pressure or the low pressure shaft whose extraction is interrupted enters a motor mode, the remaining power extracted from the high pressure shaft or the low pressure shaft in the generator mode is adjusted according to the high pressure or low pressure injection power output from the high pressure electric machine or the low pressure electric machine which has entered the motor mode.

A smart home power control device includes an AC power input terminal, an AC-DC circuit, a DC voltage conversion circuit, a power distribution circuit, multiple power distribution branches, a multi-channel LED dimming control circuit, several power switches, and a controller. The input and output terminals of the AC-DC circuit are connected to the AC power input terminal and the voltage input terminal of the power distribution circuit, respectively. The voltage output terminal of the power distribution circuit is connected to the voltage input terminals of the multiple power distribution branches. The voltage output terminals of the multiple power distribution branches are connected one-to-one with the voltage input terminals of the multi-channel LED dimming control circuit. Several power switches are connected in series between the voltage output terminals of every two adjacent power distribution branches. The controller controls the operation of the power distribution circuit, the multiple power distribution branches, the multi-channel LED dimming control circuit, and the power switches. This invention enables a single power supply to power multiple loads and supports power sharing.

A distributed small-scale reactor power system includes: a first set of small-scale reactors configured to supply power to a datacenter that includes a plurality of IT racks. The system also includes a set of power converters, where each small-scale reactor is operatively coupled to at least one power converter. Each power converter is also operatively coupled to at least one IT rack. In some aspects, the set of small-scale reactors is configured in a ring topology to provide power sharing and redundancy.

This invention relates to the field of air compressor technology, and provides a multi-functional air compressor, comprising: a housing, wherein a compression chamber is fixedly connected to the rear end of the housing, the input end of the compression chamber is provided with a stable air source through an air inlet assembly, and the air is compressed and pressurized by a pressurization assembly; and a cooling chamber, which is fixedly connected to the rear end of the outer wall of the compression chamber and filled with coolant to absorb the heat generated by the compressed air in the compression chamber. Through a system integration design of power sharing, composite heat exchange, and multi-output, the multi-functional integrated air compressor is achieved, which not only simplifies the equipment structure and reduces energy consumption and manufacturing costs, but also enables a single unit to simultaneously meet diverse application needs such as multi-station high-pressure air supply, efficient thermal management, and portability.

Techniques are provided for a network-controlled repeater (NCR) to share power during simultaneous transmission of control and backhaul links. When the total power used for transmission via the control and backhaul links is below a maximum power used for transmission, the NCR can use a calculated transmit power to transmit each link. Otherwise, the NCR can apply a relative priority for the links, a default priority for each link, a step-wise reduction of power, or a power sharing factor. The power sharing techniques can be based on whether there is an overlap between the links on the same time symbol, where the same or different beams are used for each link, and / or whether a priority flag is being used for the access link. These and numerous other features and examples are described.

This invention relates to the field of multi-source coordinated control technology in distribution networks, and discloses an automatic switching method and system for multiple power sources in a distribution network. The switching method includes: dynamically modeling the transient power flow of the main power source and distributed power sources in a multi-source distribution network, and performing dynamic response analysis of topology changes; evaluating the system energy obtained from the dynamic modeling using the transient energy function method, calculating the kinetic and potential energy components before and after the switching, and determining the system energy balance state based on the comparison result of the energy difference and the critical energy threshold; and executing phased soft switching control based on the energy evaluation result, through sequential control logic of synchronization stage, power sharing stage, and switching transition stage, and performing gradual power transition between the main power source and distributed power sources according to a predictive control algorithm. This invention achieves real-time power flow reconstruction under topology changes, energy-driven switching decisions, and smooth power transition, reducing voltage fluctuations and transient impacts caused by switching.

This invention discloses a multi-source time-domain collaborative control method, system, and device for a virtual synchronous generator, belonging to the field of power electronics control technology. The method includes: synchronously acquiring multi-source time-series data from the grid connection point and the virtual synchronous generator itself; constructing a multi-source time-domain state observer based on the fusion of Kalman filtering and recursive least squares to estimate the equivalent inertia coefficient and equivalent damping coefficient of the power grid in real time; designing a collaborative controller including a model predictive control layer and a sliding mode control layer, using the estimated equivalent inertia coefficient and damping coefficient as feedforward correction quantities, continuously optimizing the solution for the optimal voltage reference vector, and generating a compensation control quantity; superimposing the optimal voltage reference vector and the compensation control quantity, and generating a drive signal through pulse width modulation. This invention, through multi-source time-domain collaborative control, achieves adaptive matching of the inertia and damping of the virtual synchronous generator, improves the speed and stability of frequency support, and enhances the power sharing capability when multiple generators are connected in parallel.

A multi-channel amplifier system for power supplies with specific power output ratings. The system includes first and second output channels, each containing a power amplifier, an adjustable voltage limiter, and an adjustable impedance circuit. A constraint controller with predefined partial power settings is able to adjust the voltage or impedance based on specific constraint patterns. Power distribution balance between output channels is regulated by a multi-contact switch. Real-time data of the output channels is acquired by a sensing system including temperature, current, and voltage sensors, allowing dynamic adjustments within predefined ranges. The system also integrates an input signal digital signal processor (DSP) compressor or limiter that works in conjunction with a microcontroller to limit audio signals based on specified thresholds. This innovative design enables efficient and adaptive power distribution without the need for a graphical user interface, making it ideal for various audio applications.

A kind of active power sharing method based on adaptive virtual impedance adjustment multi-inverter parallel, comprising S1: constructing adaptive virtual impedance;S1.1: each inverter transmits local output power related real-time information to microgrid power control system via communication line;S1.2: power control system calculates the power reference value that each distributed power supply should be issued according to capacity proportion;S1.3: the output power actual value calculated in step S1.1 is combined with the output power reference value calculated in step S1.2, and the virtual impedance required for each distributed power supply is generated based on the power deviation of the two;S2: the resistance component in virtual impedance is introduced into active voltage droop equation, the influence of line impedance difference on multi-inverter parallel power distribution is weakened by dynamically adjusting droop coefficient, and then the power balance distribution effect of droop control is improved. Through the above scheme, the active power distribution accuracy of inverter multi-machine parallel in microgrid system is improved, and the circulating current between inverters is reduced.

The application discloses a kind of single-phase inverter parallel virtual impedance control system and method, inductance current sampling value is generated single-phase inverter corresponding virtual impedance voltage signal by second-order generalized integrator (SOGI), dq coordinate transformer, virtual impedance, anti-Clark transformer;Virtual impedance voltage signal is introduced into droop controller, and the voltage and angular frequency reference instruction of inverter is obtained, and the reference instruction is tracked and controlled by voltage and current double closed-loop controller, finally realizes the stable operation and power sharing of single-phase inverter parallel system.The application can effectively construct virtual impedance in single-phase inverter parallel system, improve the power sharing accuracy and stability of parallel system, and be applicable to distributed power generation, microgrid and uninterruptible power supply and other multi-machine parallel occasions.

The utility model discloses a kind of coal mine tunneling roadway self-cleaning formula dust-removing filter screen, belong to mining dust-removing technical field, including dust-removing shell, install the wind scooper of dust-removing shell front side, install the fan of dust-removing shell rear side and rearward front air supply and install the filter screen in dust-removing shell inside;Dust-removing shell inside is equipped with the cleaning frame that always contacts filter screen windward face, the cleaning frame concentric butt joint in fan inner fan blade's pivot.The cleaning frame of this coal mine tunneling roadway self-cleaning formula dust-removing filter screen with fan fan blade with rotating clean brush mode clean filter screen windward face, it has following advantages: self-cleaning function, reduce maintenance cost;Power sharing, compact structure is efficient;Precise cleaning, improve filtration efficiency;Prolong the life of filter screen, reduce operating cost;Adapt to complex working condition, high reliability.

The application discloses a parallel circulating current suppression method and device of a fractional order inverter, electronic equipment and a storage medium, and comprises the following steps: establishing a mathematical model of a fractional order inverter comprising a fractional order inductor and a fractional order capacitor, constructing a voltage and current double control loop based on a fractional order controller based on the mathematical model, and tracking and controlling the output voltage and current of the parallel fractional order inverters, and suppressing the circulating current by power sharing of the parallel fractional order inverters through droop control and fractional order virtual impedance. On the one hand, the voltage and current double control loop based on the fractional order controller can track the output voltage of the inverter, improve the tracking effect of the output voltage, reduce the voltage difference between the inverters, and suppress the parallel circulating current. On the other hand, the droop control combined with the fractional order virtual impedance can improve the power distribution response speed of the fractional order inverter, improve the power distribution accuracy between the inverters, and improve the suppression effect of the parallel circulating current.

The present application relates to the technical field of ships. Disclosed are a multi-ship formation and a formation method therefor. The multi-ship formation method provided in the present application is applied to N ships. The formation method comprises: selecting any one of N ships as a central ship; and physically and electrically connecting the N-1 ships to the central ship, respectively, so as to realize spatial regional interconnection and power sharing among the N ships. In the present application, N ships are interconnected to realize spatial sharing and power sharing, and thus the ships are more stable when experiencing wind and waves.

This invention relates to the fields of data processing and artificial intelligence technology, specifically providing a method and system for hotspot trend prediction and computing power sharing for multi-source heterogeneous data, comprising the following steps: S1, multi-source data acquisition; S2, intelligent preprocessing; S3, cross-modal fusion; S4, hotspot prediction; S5, computing power sharing scheduling. Compared with existing technologies, this invention achieves significant technological advancements in data processing, prediction accuracy, and computing power sharing, and has broad application prospects and commercial value.

The application relates to a polyester waste closed-loop recycling device and method, and belongs to the polyester waste recycling technical field.The device comprises a tank body, a liftable centrifugal cylinder is arranged in the tank body, a circular discharge port is arranged at the lower end of the centrifugal cylinder, a balance heating mechanism and an output shaft with a clutch mechanism are arranged inside, a jacking mechanism is arranged at the lower part of the tank body, and the jacking mechanism comprises a telescopic cylinder, a sealing cylinder in sliding cooperation with the circular discharge port and a jacking column.The jacking mechanism is lifted to realize three functions in one action: first, the clutch mechanism is connected with an external power source to realize power sharing of upper and lower equipment, and energy consumption is greatly reduced;second, the sealing cylinder is cooperated with the circular discharge port to realize bottom plugging and opening, and the problem that solid impurities cannot be discharged from the top when a reaction kettle is directly connected with a lower separation kettle is solved;third, dynamic sealing is realized by using a spiral groove, and high-viscosity material abrasion is avoided.The application has compact structure, and effectively improves the closed-loop recycling efficiency of polyester waste.

This invention relates to the field of power system planning and operation optimization technology, specifically disclosing a collaborative optimization method and system for multiple types of active support equipment at the weak-sending end. The method includes establishing a voltage-reactive power droop characteristic equation and constructing a unified power flow-droop static model to describe the system's steady-state operating point; constructing comprehensive performance indicators for multiple scenarios and a unified stiffness constraint model considering the short-circuit capacity of the external grid and the reactive power support capacity of the multiple types of active support equipment; at the capacity configuration layer, minimizing the weighted difference between investment cost and stability benefits is the objective; at the operation layer, minimizing the weighted sum of reactive power output adjustments for multiple types of equipment is the objective. This invention achieves coordinated improvement in configuration and operation to enhance the static margin in the most unfavorable direction and expand the stability domain form by solving capacity configuration using a surrogate model and linear programming at the upper layer, and optimizing reactive power sharing based on Q / V sensitivity and action costs at the lower layer.

The application provides a micro-grid group emergency cooperative control method and system, and relates to the field of micro-grid group operation control. The micro-grid group emergency cooperative control method firstly establishes a system steady-state convergence formula according to a cooperative control target; combines local known information, estimates average values of each state quantity and calculates neighbor node interaction information based on a dynamic convergence algorithm, establishes group-to-group and group-to-group distributed cooperative control, fault splitting, compensation quantity satisfying mobile energy storage active power sharing and SOC balance is obtained based on the dynamic convergence algorithm and a linear quadratic regulator; an event triggering condition is constructed through an imbalance of the estimated average value and information transmission error; mobile energy storage seamless exit after fault recovery is realized through supply and demand power transfer. The method can realize micro-grid group frequency / key bus voltage recovery, power sharing and mobile energy storage SOC balance, has the advantages of convergence performance and communication cost, and improves flexibility and elasticity of the micro-grid group under fault conditions.

The application discloses a self-adaptive SOC equalization control method in a black start process of an energy storage system. Compared with the prior art, the application has the following beneficial effects: compared with the traditional black start control strategy of the energy storage system, the method disclosed by the application effectively realizes SOC balancing and power sharing of different energy storage units in the energy storage system by using a self-adaptive SOC equalization strategy. The application provides an energy storage system capacity configuration strategy in the black start process and a safety threshold of charging and discharging power of each energy storage unit of the energy storage system. The method disclosed by the application improves the stability and reliability of the black start process of the energy storage system.

The invention relates to an aircraft series-hybrid electric propulsion assembly, the propulsion assembly comprising: - an electric turbogenerator (110) comprising at least one turbine engine (112) and at least one generator (114) coupled to the turbine engine; - a storage battery (125); - an HVDC bus (130) coupled to the turbogenerator and to the battery (125), the turbogenerator (110) being connected to the HVDC bus (130) via an alternating-current (AC) to direct-current (DC) rectifier (116) connected to phases of the at least one generator (114), the battery (125) being connected directly to the high-voltage direct-current (HVDC) electrical network, the turbogenerator (110) and the battery (125) sharing the power required to supply the HVDC bus (130); - a control system (115) for controlling the rectifier (116), the control system being configured to control the rectifier (116) and to manage electrical power sharing provided on the HVDC bus (130) between the turbogenerator (110) and the battery (125) on the basis of the setpoint control of at least the current (IBAT) delivered by the battery (125), by modulating the output voltage (UBUS) of the rectifier (116) via at least one control signal (CMD), in particular by pulse-width modulation.

The application provides a hybrid power grid control method, device, system, storage medium and electronic equipment, and belongs to the technical field of power grid control. The hybrid power grid control method comprises the following steps: acquiring a frequency reference value of an alternating current subsystem and a voltage reference value of a direct current subsystem; acquiring a direct current voltage of the direct current subsystem in real time; and based on the frequency reference value of the alternating current subsystem, the voltage reference value and the direct current voltage of the direct current subsystem, a preset controller model is used to control the interconnected converter, so as to control the frequency of the alternating current subsystem. The accuracy of power sharing is improved, and a fast response to alternating current interference is provided through the inertia of the capacitor, so that the frequency of the alternating current system and the average direct current bus voltage of each direct current system converge to the reference value, and the optimal power distribution can be realized in the steady state of the system.

The present application relates to a vehicle operating condition running feature calculation system based on spark big data, a computing power sharing module, including computing power resource configuration and computing power merging, the computing power resource configuration carries out computing environment configuration to the existing computing power resource that can be put into calculation, the environment state is configured to be consistent with the spark distributed computing system, realizes the integration of existing computing resources, the computing power optimal allocation and the computing module include computing power optimal allocation and feature calculation, the operating condition result integration module includes result integration and visualization, the result integration forms the market operating condition parameter according to the established integration logic, the visualization is drawn according to the operating condition parameter of different properties, solves the problems such as the existing computing vehicle cannot cover completely, and the computing efficiency is low.

This invention relates to the field of microgrid control technology, and discloses a distributed harmonic control method, device, and multi-inverter system for multi-inverter systems. In this invention, adjacent inverter control units are connected to form a ring network. During harmonic control, the output voltage and output current of the inverter in the inverter control unit are used to separate the fundamental and harmonic components. Based on the obtained fundamental component, the fundamental component of the outer loop reference voltage is calculated. The harmonic power is calculated based on the harmonic current component. Combined with the harmonic power of other interconnected units, a harmonic power sharing controller is calculated to determine the harmonic voltage gain coefficient. Based on this coefficient and the harmonic current component, the harmonic component of the outer loop reference voltage is obtained. The outer loop reference voltage is then calculated, and the control voltage for the corresponding three-phase inverter bridge is obtained from this reference voltage. This invention is unaffected by grid interference and feeder impedance mismatch, compensates for voltage distortion caused by nonlinear loads, and achieves precise harmonic power distribution between the DG (Distributed Generator and Controller).

The application discloses a kind of multi-voltage grade offshore wind power DC networking system control methods, through the collaborative control of middle section MMC and receiving end MMC, construct the efficient collection and transmission system of different power grade offshore wind power, the system is suitable for different capacity, different off-shore distance offshore wind farm access, can realize the flexible networking of multi-voltage grade DC power transmission, improve power supply reliability and transmission resource sharing capability.The sending end MMC adopts constant voltage frequency ratio control, the middle section MMC adopts fixed active power control, the receiving end MMC adopts fixed DC voltage control, and the power balance between multi-voltage grades and stable operation are realized through system level optimization adjustment.The application method has the advantages of clear structure, flexible control, strong adaptability, etc., can effectively improve the reliability of offshore wind power DC networking system, and provide technical support for future large-scale deep sea wind power development.

This invention relates to the field of power sharing technology, and discloses a power sharing method and apparatus. The method involves connecting a DDR3 detection signal line to the ground contact of the DDR3 slot on the motherboard. A pull-up resistor pulls the DDR3 detection signal line to a high level, controlling the first transistor to conduct and the second transistor to cut off. With the second transistor off, the power supply chip outputs a DDR4 operating voltage. When a DDR3 memory module is inserted into the DDR3 slot, the ground pin of the DDR3 memory module pulls the DDR3 detection signal line to a low level, controlling the first transistor to cut off and driving the second transistor to conduct. With the second transistor on, a voltage divider network is switched to allow the power supply chip to output a DDR3 operating voltage to supply the DDR3 memory module. This invention employs a safety strategy of defaulting to a low voltage and only boosting the voltage when DDR3 is detected, effectively avoiding the risk of high-voltage damage due to misoperation or incorrect insertion, and protecting expensive memory hardware.

This invention discloses a power sharing control method, apparatus, device, and storage medium for a power module. The power sharing control method includes obtaining the total power output required by the power module and the current number of online output modules, calculating the output power of each online output module, obtaining multiple different online numbers and corresponding output powers to calculate multiple different energy conversion efficiencies of the power module, and selecting the online number and output power corresponding to the highest energy conversion efficiency as the optimal online number and the optimal output power of each output module; then, adjusting the number of online output modules and calculating the current sharing command for each online output module according to the optimal online number, and using this to perform PWM modulation on each online output module, thereby realizing the redundancy sleep and wake-up of the power module inside the mobile energy storage system and the equal distribution and control of charging and discharging power, so that each power module maintains the optimal energy conversion efficiency.

This application discloses a method and system for joint frequency regulation optimization control of flywheel and thermal power units based on minimizing equipment wear. The method includes: real-time data acquisition; establishing a dynamic wear cost model for thermal power units based on thermomechanical theory and calibrating parameters using historical operation and maintenance data; setting the energy state update equation and energy recovery conditions for flywheel energy storage; constructing a joint optimization frequency regulation control model with the objective of minimizing the sum of frequency regulation error cost and equipment wear cost, and setting error cost weights and wear cost weights; adjusting the two weights in real time according to the flywheel energy update equation and engineering constraints; and finally solving for the optimal power command of thermal power units and flywheel energy storage under power balance conditions, dynamically adjusting their power sharing ratio. This method utilizes an adaptive weighting mechanism to enable the power system to automatically adjust the control strategy according to the intensity of grid disturbances and the degree of equipment wear, providing an efficient and reliable solution for joint frequency regulation of thermal power and energy storage.

An input line-connected current-controlled bridge is dynamically coupled to an output line-connected voltage-controlled bridge of a single-stage bi-directional isolated resonant power supply using a synchronous average harmonic current controller. A bridge current sensor measures low frequencies and switching currents across nodes of the current controlled bridge. Synchronized average harmonic bridge current is controlled using superimposed non-modulated and modulated feedback, respectively, to track line current commands and linearize the coupling to the voltage controlled bridge. The power factor correction signal drives the line current command to regulate the DC voltage bus. The feed-forward and feedback trim circuits generate commands to the voltage-controlled bridge to track the input line voltage with attenuated harmonics. A single stage power supply has a defined interface for synchronizing and regulating power sharing of one or more modules.

The application discloses a generalized blockchain system and a running method, and belongs to the computer field.The structure and function of the traditional blockchain are too single, and it is difficult to support the complex business scenarios of various applications.The application aims to provide a standardized and highly collaborative generalized blockchain system, integrates the traditional blockchain, a decentralized container service, a decentralized storage, a decentralized database and a decentralized Web3 domain name system, realizes unified registration and unified addressing of various services, solves the cost, performance, collaboration and resource discovery bottleneck problems of the traditional blockchain architecture, and realizes efficient development and large-scale landing of various applications.The application is suitable for various centralized applications and decentralized applications including data sharing, computing power sharing and edge computing.The generalized blockchain system provided by the application can effectively integrate various decentralized functional components to build a unified platform, and provide unified and extensible business services for various applications.