209 results about "Energy transfer" patented technology

The invention relates to the field of electromagnetic induction heating, and discloses a global temperature control method for an electromagnetic induction heating system, which comprises the following steps of: acquiring a two-dimensional temperature distribution diagram of a heating area at a plurality of key moments through a multi-point infrared temperature acquisition and induction heating coil synchronous excitation mechanism; performing multi-dimensional region segmentation on the global temperature scene data set, and identifying a temperature abnormal region and a thermal diffusion path feature based on a boundary thermal gradient change rate and an energy transfer path analysis algorithm; a distributed power regulation and control method and a historical thermal field evolution rule are introduced based on the regional thermal response feature map; thermal field feedback information is collected in real time in the temperature control process, and the current global thermal field state is judged in combination with a thermal distribution stability judgment criterion; and based on the updated control parameter configuration table, in combination with the thermal performance parameters of the material and the geometric information of the workpiece, generating an operation instruction set of the heating process, and executing intelligent regulation and control. The induction heating device has the advantage of improving the induction heating quality.

The invention discloses a method for suppressing subsynchronous oscillation of a doubly-fed grid-connected system, and relates to the technical field of stability control of a power system, and the method comprises the specific steps: S100, extracting the amplitude and phase angle of a subsynchronous frequency component, S200, generating a rotor compensation current instruction according to the amplitude and phase angle of the subsynchronous frequency component and a dynamic gain, and S200, generating a rotor compensation current instruction according to the rotor compensation current instruction; s300, dynamically adjusting the gain according to the suppression ratio and the amplitude of the target magnetic field during operation, S400, calculating the feed-forward decoupling voltage, S500, calculating the suppression ratio after injection, and executing a hierarchical control strategy. Subsynchronous oscillation suppression from the electromagnetic essential level is realized, and by monitoring the subsynchronous component of the air-gap magnetic field in real time and injecting the anti-phase compensation current at the rotor side, the suppression efficiency of the subsynchronous oscillation is improved. Active interference of a stator magnetic field and a rotor magnetic field in a subsynchronous frequency band is cancelled, an energy transfer path of subsynchronous oscillation is directly blocked, oscillation forming conditions are destroyed, and a dynamic gain adjustment mechanism optimizes compensation intensity according to a real-time suppression effect so as to cope with 5-45Hz subsynchronous oscillation frequency change.

The invention discloses a thermal power generating unit operation state detection method and system, and relates to the technical field of operation state detection, and the method comprises the steps: S100, building a working condition variable label; s200, carrying out statistics on correlation coefficients of sensors and faults under various working conditions in historical operation data of the thermal power generating unit, dynamically updating weights, and storing the weights in a working condition database; s300, based on the energy transfer chain of the thermal power generating unit, establishing a parameter incidence matrix between devices; according to the method, the data weights of different sensors are adaptively adjusted according to the real-time operation state of the equipment, the defect that the traditional multi-sensor fusion adopts fixed weight or simple weighted average and is difficult to adapt to the working condition change is overcome, a physical relationship network between the equipment is constructed, key associated parameters are identified in an energy transfer form, and the fault identification accuracy is improved. The robustness of anomaly monitoring under complex working conditions is improved, and the false alarm rate is reduced.

The invention discloses an electricity-hydrogen-ammonia coupling system configuration method and system, and relates to the technical field of electricity-hydrogen-ammonia coupling systems, and the method comprises the steps: sequentially carrying out two-stage clustering according to renewable energy source daily output data, electrothermal hydrogen daily load data and daily net energy, and generating a typical daily scene and a clustering index; performing electric hydrogen ammonia energy storage collaborative simulation operation on all the typical day scenes, and reconstructing a year-round energy storage state based on a clustering index according to the variation of the hydrogen storage amount and the ammonia storage amount after simulation operation of each typical day scene; and taking the minimum annual total cost formed by the simulation operation cost, the capacity configuration cost and the hydrogen safety risk cost as an optimization target to obtain an optimal equipment capacity configuration scheme. While the calculation cost is reduced and the solving efficiency is improved, the time sequence connection characteristic and the energy storage characteristic of different long-time energy storage are kept, and multi-time-scale energy transfer is realized, so that the applicability and the economical efficiency of a planning scheme are improved.

A system for inductive energy transfer may include a stationary induction charging device including a stationary energy coil, a mobile induction charging device including a mobile energy coil, and a positioning device configured to detect a positioning of the stationary energy coil and the mobile energy coil relative to one another. During a charging operation of the system, one of energy coils may provide an alternating magnetic field which induces a voltage for energy transfer in the other energy coil and / or the induction charging devices may be disposed spaced apart from one another in a height direction. The positioning device may include i) four transmission coils in one of the induction charging devices and ii) at least one receiver in the other induction charging device. The transmission coils may, during a positioning operation, provide positioning fields that are distinguishable from one another.

The invention belongs to the technical field of collaborative management, and discloses a public building time period photovoltaic photo-thermal heat pump collaborative control method and system, and the method comprises the steps: obtaining building management and control information in a public building, and the building management and control information comprises building energy consumption data, environment meteorological data and equipment operation data; building a building energy consumption model based on the building energy consumption data; carrying out key analysis in combination with environmental meteorological data, and generating a self-adaptive energy distribution matrix; carrying out omnibearing monitoring and mode analysis on the basis, and obtaining an equipment operation efficiency log; performing energy domain division and collaborative strategy configuration on the basis of an equipment operation efficiency log, constructing a virtual energy network and an energy circulation rule, performing differential control parameter generation and integrated analysis, forming a dynamic optimization strategy and a real-time regulation and control scheme, and updating the adaptive energy distribution matrix; according to the invention, a comprehensive and intelligent control solution is provided for efficient cooperative operation of the photovoltaic photo-thermal heat pump in the public building.

The invention discloses a furnace flue gas waste heat graded cycle power generation method and system, which combines multi-stage purification and temperature division utilization, and comprises the following steps: firstly, carrying out component analysis and desulfurization purification treatment on furnace flue gas, establishing a layered purification chain, and identifying an acid dew point area; a safe flue gas purification area is formed through material adaptability evaluation and corrosion control measures; then carrying out temperature gradient analysis and temperature field reconstruction on the purified flue gas, establishing a heat grade distribution mechanism and forming a gradient heat energy flow to realize complementary utilization of heat sources at different temperature sections; a water vapor main cycle and organic working medium auxiliary cycle cascade power generation system is constructed, and the magnetic suspension bearing technology is integrated to improve the auxiliary cycle power generation efficiency; establishing a heat balance parameter and optimizing a circulation network through heat matching degree monitoring and mismatch detection; and finally, an energy transfer matrix is constructed, distributed power generation configuration is formed through generator coupling analysis and rotating speed coordination control, stable electric energy output is completed, and efficient utilization of waste heat is achieved.

The invention provides a dual-time-scale optimization scheduling system and method considering diesel storage insurance supply and new energy consumption, and the method comprises the steps: collecting a plurality of data in real time, and outputting a historical data set and real-time monitoring data to a scheduling module; based on the wind and light output predicted values and load predicted values of the day before dispatching and the dispatching day, a multi-target optimization model is constructed, an energy storage charging and discharging plan, a diesel generator start-stop plan and an electric vehicle dispatching instruction are output, and cross-day energy transfer is achieved; on the basis of a model prediction control principle, 15 minutes are taken as a scheduling step length, a day-ahead scheduling plan is corrected in a rolling manner in combination with ultra-short-term source load prediction data, and prediction deviation is stabilized; controlling charging and discharging switching of the energy storage system, dynamic adjustment of the charging power of the electric vehicle and the operation state of the charging pile; through cooperative operation of day-ahead pre-scheduling and intra-day rolling optimization, source-load balance and low-carbon operation are realized. According to the scheduling system, long-period energy planning and short-period dynamic correction are both considered, and the self-consistency and low-carbon property of the off-grid charging station are improved.

The invention relates to the technical field of energy control, and provides an ultra-low environment temperature carbon dioxide-based dual energy supply control system, which comprises a main circulation unit, an auxiliary circulation unit, a heat exchange water path module and a controller, a CO2 heating loop is adopted in the main cycle, and an R134a condensation supercooling loop is adopted in the auxiliary cycle; a controller constructs a directed graph structure based on thermodynamic topology, a three-branch convolution mechanism is adopted to model an energy transfer path, embedded representation is optimized and controlled in combination with an interval-contrast loss function, and an accurate control instruction is generated to adjust components such as a compressor and a throttling valve; in the aspect of fault diagnosis, a time parameterization convolution-symmetric GRU model is constructed, a Legendre polynomial is utilized to model a time convolution kernel, a Verlet integral mechanism is combined to reconstruct a hidden state path, and accurate identification of an abnormal trend in multi-source data is realized. According to the system, the energy supply stability and the intelligent level in the extremely low-temperature environment are improved.

The invention discloses a broadband resonance damping characteristic regulation and control method and device, and the method comprises the steps: carrying out the broadband signal sampling of a target node in a power system, obtaining the instantaneous distortion of a target voltage and the cumulative deviation of a target current, and carrying out the calculation of an energy transmission delay factor and an energy balance correction factor; according to the energy transfer delay factor and the energy balance correction factor, calculating a local damping dynamic coefficient and a regulation and control precision real-time error so as to optimize target voltage instantaneous distortion and target current accumulation deviation; and updating a power flow distribution proportion according to the optimized target voltage instantaneous distortion, the optimized target current accumulation deviation and the local damping dynamic coefficient so as to improve the voltage stability of the target node. Transient characteristics of energy changes of the electric field and the magnetic field can be quantitatively analyzed through an energy transfer delay factor and a balance correction factor; and according to the transient characteristic, the broadband resonance damping characteristic is regulated and controlled in combination with the real-time operation state of the power system, so that the stability of the power system is improved.

Bidirectional energy transfer systems are provided for transferring energy between an electrified vehicle and other structures. The bidirectional energy transfer system may include a home energy management system having a dark start energy storage resource. The home energy management system may enter hibernation mode when the dark start energy storage resource reaches a low power state. The home energy management system may subsequently exit hibernation mode using a variety of recovery strategies when the electrified vehicle returns to the structure or near when the vehicle is expected to return to the structure. Placing the home energy management system in hibernation mode ensures that the dark start energy storage resource will have a sufficient amount of energy for powering system loads necessary to initiate the energy transfer from the vehicle to the structure during the grid power outage.

The present invention provides a bidirectional energy-transfer system comprising: a thermally and / or electrically conductive concrete, disposed in a structural object; a location of energy supply or demand that is physically isolated from, but in thermodynamic and / or electromagnetic communication with, the thermally and / or electrically conductive concrete; and a means of transferring energy between the structural object and the location of energy supply or demand. The system can be a single node in a neural network. The thermally and / or electrically conductive concrete includes a conductive, shock-absorbing material, such as graphite. Preferred compositions are disclosed for the thermally and / or electrically conductive concrete. The bidirectional energy-transfer system may be present in a solar-energy collection system, a grade beam, an indoor radiant flooring system, a structural wall or ceiling, a bridge, a roadway, a driveway, a parking lot, a commercial aviation runway, a military runway, a grain silo, or pavers, for example.

The invention belongs to the technical field of power system dispatching methods, and particularly relates to a water storage and navigation aid waterway hydrogen chain and drainage basin power system cooperative dispatching method for a hydropower station. Comprising the following steps: establishing an RSOC operation constraint considering flexible conversion of hydrogen production and power generation; constructing an HV space-time energy transfer constraint; constructing a short-term scheduling model of the waterway hydrogen chain basin power system; designing a double-layer algorithm capable of realizing optimal distribution of thermal power of the thermal power plant and the electric boiler; processing the nonlinear constraint of the short-term scheduling model by adopting a linearization method, and solving the short-term scheduling model to obtain an optimization strategy; and guiding short-term cooperative operation of the waterway hydrogen chain and the watershed power system thereof according to the optimization strategy. The scheduling method can further reduce the system operation cost while giving consideration to the energy balance of the waterway hydrogen chain and the watershed power system thereof, coordinates the contradiction between the hydropower station power generation power and the HV transfer feasibility, and improves the operation flexibility of the thermal power plant.

The invention relates to the technical field of central air conditioner control, and discloses a central air conditioner energy-saving disinfection and killing control method and system based on Internet of Things monitoring, and the method comprises the steps that temperature and humidity time sequence data monitored by the Internet of Things of a central air conditioner and a current and voltage parameter matrix of a high-voltage electrostatic disinfection and killing module are obtained; performing multi-modal feature fusion calculation to generate a multi-dimensional state matrix; establishing an energy consumption-disinfection associated nodal topology network, simulating an energy transfer path and outputting a synergistic effect probability value set; performing space-time correlation mapping operation to generate a sterilization-energy consumption coupling prediction curve; calculating an energy-saving efficiency factor and generating a standardized coupling coefficient thermodynamic diagram; and extracting the operation quantitative index, dynamically comparing the operation quantitative index with a preset threshold value, and generating a regulation and control scheme when the index breaks through the threshold value. According to the method, collaborative optimization control over energy conservation and disinfection of the central air conditioning system is achieved, the energy utilization efficiency is improved, the disinfection effect is guaranteed, and high adaptability and expandability are achieved.

A demand and supply planning method generates a supply-demand plan including information that specifies operation of an energy generation unit for each unit time in a microgrid having energy generation units being connected to an external energy supply system and generating energy while consuming fuel, an energy storage unit, and a load unit; by calculating an optimization problem related to an objective function including terms related to energy transfer from the external energy supply system in the microgrid and terms related to fuel consumption in the microgrid by using a constraint condition related to a relationship between information related to an operating duration time in each of the one or more energy generation units at a start time for generating the supply-demand plan and a minimum operation time constraint of the energy generation unit; and outputting the supply-demand plan based on a calculation result of the optimization problem.

The invention relates to the technical field of off-grid and grid connection, and provides a closed-loop control strategy and circuit based on threshold criterion and dual-mode switching. Different control modes are triggered according to the change of the voltage difference by monitoring the voltage difference delta V of the positive and negative bus capacitors in real time. When the capacitor voltage difference delta V is lower than a preset threshold value, the system enters a standby mode, and additional adjustment is not needed; and when the voltage difference delta V is greater than or equal to a threshold value, dynamic compensation is triggered and next-step control is entered. The system judges through voltage polarity, and if a positive bus overvoltage working condition is detected, a BUCK step-down mode is started; and if the working condition is the negative bus overvoltage working condition, starting a BOOST mode. In order to ensure independence and stability of a voltage regulation process, an independent decoupling circuit is adopted to isolate an energy transfer process from a main inverter path in a BUCK or BOOST mode. Based on the real-time feedback closed-loop control of the capacitor voltage difference delta V, the switch duty ratio is dynamically adjusted, the dynamic response capability and stability of the system are effectively improved, the overvoltage risk is reduced, and the electric energy regulation and control efficiency is optimized.

The invention relates to a control method of an AC / DC converter, and the method comprises the steps: controlling a balance bridge circuit to continuously work in each AC period for energy transmission under the condition that the AC side current is detected to be half-wave current, for example, a half-wave load is provided; the situation that the energy transmission process of the balance bridge circuit is concentrated in a half alternating current period, consequently, midpoint balance current overcurrent is caused, wave-by-wave current limiting is triggered, and then the maximum half-wave load carrying capacity of a system is affected is avoided. Therefore, according to the control method of the AC / DC converter provided by the embodiment of the invention, the half-wave load carrying capacity of the AC / DC converter is improved.

Disclosed is a hydrogen fuel thermal conditioning system 1, having a fuel supply system 100 and an energy transfer system 200. The fuel supply system comprises a tank 23 configured to store hydrogen f

The invention discloses a ground-air cooperative coupling multi-element energy storage system and an operation method, and relates to the technical field of energy storage. Through a three-dimensional structure of overground electrochemistry and underground thermodynamics and intelligent cooperative control, functional complementation of short-time frequency modulation and long-time energy transfer is realized; the deployment problem is solved through underground space, and the space utilization rate is increased; a complete energy gradient utilization chain from waste heat recovery, grade improvement and power generation to waste heat heating is constructed, and the comprehensive energy efficiency of the system is remarkably improved; and through a self-adaptive coordination control strategy, the safety, stability and economy of the system under multi-mode operation are ensured.

The present application relates to geothermal resource development and evaluation technical field, especially to the balanced water and heat type geothermal resource dynamic evaluation method, including: collecting the flow, temperature and pressure data of the produced fluid and the recharging fluid, and carrying out time synchronization, outlier elimination and time series reconstruction processing on the data to form a continuous operation data set; jointly analyzing the time series change of the operation data set, extracting flow response characteristic quantity and heat exchange response characteristic quantity, and dividing the underground heat reservoir into flow and heat storage units according to the similarity of the characteristic quantity; on the scale of the flow and heat storage unit, respectively establishing a flow structure model and a heat exchange structure model, and coupling them, through a unified state variable to describe the corresponding relationship between the fluid migration behavior and the energy transfer behavior, a flow and heat storage dynamic evaluation model is constructed; based on the model, the change of the state variable of each flow and heat storage unit with time during the recharging operation process is calculated, and the dynamic evaluation data is obtained.

The invention discloses an energy path optimization method for a multi-medium hybrid energy storage unit, relates to the technical field of energy path optimization, is used for solving the problems of unbalanced energy paths and insufficient system circulation activity, and aims to optimize the energy path by detecting the last energy charging and releasing time of each energy storage unit, calculating the energy retention time and marking the energy storage unit. Acquiring charge-discharge cycle times and historical charge-discharge data of the marked energy storage unit, judging whether an energy transfer mechanism is entered or not, screening a target energy storage unit according to the medium type of the marked energy storage unit when the energy transfer mechanism is entered, analyzing discharge current and heat exchange flow of the target energy storage unit to determine an energy receiving characteristic, whether the retention energy of the marked energy storage unit is transferred to the target energy storage unit or not is judged according to the energy receiving characteristics, the problem of efficiency reduction caused by energy retention of part of the energy storage units in long-term operation of the multi-medium energy storage unit is solved, and balance and circulation activation of an energy path are achieved.

The invention discloses a building comprehensive management control method and device and a medium, and belongs to the technical field of building automation control, and the method comprises the steps: building a dual-medium coupling model between an air medium and a building structure medium, and carrying out the parameterization; establishing a heat flux balance equation based on a parameterization result; building operation data and environment data are collected and processed; the air medium enthalpy difference change rate and the building structure body temperature change rate are calculated and substituted into the heat flux balance equation, the real-time heat flux difference is obtained, and a coupling state vector is generated; and inputting the coupling state vector into a dynamic balance optimization control equation to execute iterative solution, obtaining a control variable, and generating a control signal to adjust a building operation state. According to the method, an energy transfer rule is accurately described through double-medium coupling modeling, a heat flux balance equation is established to realize dynamic balance control, control variables are divided into air side and building structure body side adjustment components to realize multi-system collaborative optimization, and the control precision and the energy-saving effect are improved.

The invention relates to an electric energy management method and device, computer equipment and a storage medium. The method comprises the following steps: receiving an energy transfer request sent by energy storage terminal equipment, wherein the energy transfer request comprises a user identifier, an energy transfer value and an energy transfer direction; determining a target energy account according to the user identifier; under the condition that the energy transfer direction and the energy transfer value determine that the target energy account meets the energy transfer condition, controlling the energy storage terminal equipment to execute energy transfer operation; and updating the residual energy value of the target energy account according to the energy change value in the energy transfer process. The method can improve the resource utilization rate of electric energy.

Described herein are systems and methods for harvesting energy from water movement to mechanically power desalination devices and other systems, such as irrigation systems. For example, a distillation system based on mechanical energy may include an energy harvesting system configured to obtain mechanical energy from water movement, an energy transfer mechanism coupled to the energy harvesting system to transfer the obtained mechanical energy to a distillation apparatus, and the distillation apparatus having a vacuum chamber and a vacuum mechanism driven only by the mechanical energy provided by the energy transfer mechanism to create a vacuum in the vacuum chamber in order to lower an amount of energy needed for distillation of the fluid to occur. The distilled water may then be used for irrigation, consumption, and other needs.

The invention relates to the technical field of energy storage power supplies, and mainly provides a voltage equalization circuit and an energy storage system, the circuit comprises a driving module, an overvoltage detection module and a CLLC module, the overvoltage detection module and the CLLC module are respectively connected with the driving module, and the overvoltage detection module and the CLLC module are respectively connected with a first bus capacitor and a second bus capacitor. When energy stored in the first bus capacitor and the second bus capacitor rises, in order to avoid the overvoltage risk, the overvoltage detection module detects the first bus voltage and the second bus voltage respectively, and when the voltage difference value between the first bus voltage and the second bus voltage is larger than a voltage threshold value, it is determined that the voltage of the first bus capacitor and the voltage of the second bus capacitor are too high. At the moment, the overvoltage detection module outputs a first control signal to the driving module, so that the driving module drives the CLLC module to start working based on the first control signal, and then the first bus capacitor and the second bus capacitor are controlled to carry out energy transfer, so that the first bus voltage and the second bus voltage are balanced, and the overvoltage condition is avoided.

In some implementations, an energy transfer system includes a housing. The energy transfer system includes a robotic system that includes an end effector for enabling energy transfer, the robotic system being movable between an interior of the housing and an external environment. The energy transfer system includes an energy transfer dispenser system configured to output energy, the energy transfer dispenser system being located in the external environment. The energy transfer system includes one or more energy transfer cables coupled to the end effector. The energy transfer system includes an energy transfer outlet system mounted in the interior of the housing, the energy transfer outlet system enabling a connection between the one or more energy transfer cables and the energy transfer dispenser system.

This invention relates to the field of ship energy conservation and emission reduction technology, and particularly to a low-carbon emission carbon dioxide transport vessel and its control method. A low-carbon emission carbon dioxide transport vessel includes an LNG supply unit, a water glycol circulation unit, a carbon dioxide capture unit, a carbon dioxide storage unit, and a dual-fuel main engine. The LNG supply unit includes an LNG storage tank, a submersible pump, an LNG heat exchanger, a buffer tank, and a main gas supply valve. The carbon dioxide capture unit includes a spray assembly, an absorption and desorption assembly, and a compression liquefaction assembly. The carbon dioxide storage unit includes a carbon dioxide storage tank and a BOG regulating valve. The water glycol circulation unit serves as a cold energy transfer medium, enabling the coupling of LNG cold energy with the carbon capture system. The advantages of this low-carbon emission carbon dioxide transport vessel and its control method are that it reduces the space occupied on the vessel, lowers the vessel's weight, reduces processing costs, and lowers processing energy consumption.

A method of monitoring heating of a hermetic package of an implanted transcutaneous energy transfer system (TETS) coil, the method includes monitoring a power transfer between the implanted TETS coil and an external TETS coil; detecting an amount of power lost during the power transfer; determining if the amount of power lost during the power transfer is above a first predetermined threshold; if the power lost is above the first predetermined threshold, determining if a misalignment between the implanted TETS coil and the external TETS coil is greater than a predetermined distance; and if the misalignment is greater than the predetermined distance, generating an alert to align the external TETS coil with the implanted TETS coil.

The invention provides a circuit breaker with a current-limiting reactor LR switching function. The circuit breaker comprises a mechanical switch K1, a first thyristor D1, a current-limiting reactor LR, a coupling inductor LO and a power supply VDD, the positive electrode of the mechanical switch K1 is respectively connected with the current limiting reactor LR, the first thyristor D1 and the power supply VDD; the negative electrode of the mechanical switch K1 is respectively connected with the current limiting reactor LR, the first thyristor D1 and the vacuum switch K2 through the primary side of the coupling inductor LO; the negative electrode of the vacuum switch K2 is connected with the negative electrode of the power supply VDD through the load R. When the circuit breaker is in rated operation, current only passes through the mechanical switch and the vacuum switch, so that the system loss is reduced, and the energy transmission efficiency of the circuit breaker is improved; in a fault state, the current limiting reactor is put into use, so that the effect of limiting the rising rate of the fault current of the system can be achieved, and favorable guarantee is provided for fault removal of the circuit breaker; and the speed of transferring the fault transient current from the mechanical switch to the current limiting reactor is improved.