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119 results about "Charge model" patented technology

Modelling method for surface potential basis intensive model of III-V group HEMT (High Electron Mobility Transistor)

ActiveCN105468828ASolve the physics problem of quantum effect processingSolve the problem of difficult glueCAD circuit designSpecial data processing applicationsCapacitancePhysical model
The invention discloses a modelling method for a surface potential basis intensive model of an III-V group HEMT (High Electron Mobility Transistor). The method comprises the following steps of firstly, establishing an intrinsic structure model and an extrinsic structure model of the III-V group HEMT, combining a physical structure and a behavior mechanism of a device to construct a topological structure, and then embedding the established models into a commercial EDA (Electronic Design Automation) tool; secondly, carrying out on-wafer testing on an actual depletion device to obtain various performance test data of the device; and lastly, verifying the intensive model. The model solves the problems that the existing current and charge equations of the device cannot integrate, the segment points are discontinuous and the equations cannot be used for nonlinear circuit simulation; through a method for solving a surface potential source equation to deduce model current and charge/capacitance equations, a physical problem for quantum effect processing and a numerical algorithm problem caused by simultaneous self-consistent solution of a classic carrier transport equation and a new effect in the existing physical model are solved; and furthermore, a computational formula for volume charge density is deducted again, so that a problem of difficulty in gluing in a charge model is solved.
Owner:HANGZHOU DIANZI UNIV

Photovoltaic intelligent community electric automobile and controllable load two-stage optimization scheduling method

The invention discloses a photovoltaic intelligent community electric automobile and controllable load two-stage optimization scheduling method. A controllable load output model is established based on residential area, controllable load use characteristics and laws of thermodynamics, an electric automobile charging model is established based on electric automobile user driving characteristics, and a photovoltaic probability model is established based on the condition that photovoltaic output forecast deviations meet normal distribution; in day-ahead scheduling, time-of-use electricity price is set with profit maximization of an operator obtained after orderly charging of electric automobiles being as a target, and the electric automobiles are guided to be charged orderly through the time-of-use electricity price to reduce system valley-peak difference; taking consideration of influence of photovoltaic prediction and temperature prediction deviation on intelligent community electric automobile and controllable load co-scheduling, supply and demand unbalance due to day-ahead predication is corrected by introducing real-time scheduling; and in real-time scheduling, with the time-of-use electricity price set in day-ahead scheduling being as a basis, a day-ahead charging scheme of the electric automobiles is optimized to reduce real-time scheduling cost and stabilize load fluctuation. The method comprises day-ahead scheduling and real-time scheduling two-stage optimization.
Owner:SOUTHWEST JIAOTONG UNIV

Electric vehicle battery swap station orderly charging control method

The invention relates to an electric vehicle battery swap station orderly charging control method. The electric vehicle battery swap station orderly charging control method comprises steps that a battery charged state level is discretized; an electric vehicle battery swap requirement is acquired; the orderly charging model of the battery swap station taking valley filling as a target is built, and the fitness function of the orderly charging control is determined by taking a deviation square sum of a load as an index; the optimal solution of the orderly charging control of the battery swap station is solved by adopting an improved cuckoo search algorithm according to the determined fitness function, and a battery charging schedule is determine for the battery swap station according to the solved optimal solution. By adopting the orderly charging and battery swap control method capable of facilitating operation of a power swap station manager, the number of the electric vehicles participating in battery swap service in each time period and the number of the swapped batteries participating in charging behaviors in each time period are acquired, and the orderly charging and battery swap scheduling of the battery swap station are realized, and therefore the daily operation of the power swap station is satisfied, and a function of filling a valley of a regional power grid is realized.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER

Entering and exiting exception handling method and entering and exiting exception handling system based on cloud parking platform, and medium

The invention provides an entering and exiting exception handling method and an entering and exiting exception handling system based on a cloud parking platform, and a medium. The method comprises thefollowing steps: monitoring whether an entrance and an exit of an offline parking lot have exceptions in real time; if the entrance and the exit of the offline parking lot have exceptions, recordingvideo for the entrance and the exit of the offline parking lot, uploading the video for the entrance and the exit of the offline parking lot to a cloud monitoring end of the cloud parking platform inreal time, and thereby pushing the video to a central on-duty idle cloud agent; receiving operation instructions of the idle cloud agent through an entrance and exit operation screen of the cloud parking platform, and handling the entrance and exit exceptions of the offline parking lot according to the operation instructions, wherein the operation instructions are generated according to types of the exceptions of the offline parking lot. The method can perform real-time monitoring on the exceptions of the offline parking lot and handle the exceptions timely, avoid charging vulnerabilities which may be generated in the conventional charging mode, effectively reduce hardware and labor cost of the parking lot and realize optimized allocation of resources.
Owner:XIAMEN ROAD & BRIDGE INFORMATION ENG

Method for forecasting and producing narrow hardenability strip steel by hardenability

The invention discloses a method for forecasting and producing narrow hardenability strip steel by hardenability, mainly aiming at steel grade which has a hardenability requirement and evaluates tail-end quenching hardness by a Jominy value. The strip steel comprises pinion steel, hardened and tempered steel, spring steel and bearing steel. The invention combines a BP (back propagation) manual neural network model with an incremental algorithm, takes the component increment of chemical components to a reference furnace as input, takes end quenching value increment of Jominy tail-end quenching hardness to the reference furnace as output, and builds a hardenability forecast model based on an incremental neural network; according to the difference of the end quenching precast value and the end quenching target value of the neural network model, a component rule base gives the adjustment quantity of each element component, and the process of charging is carried out according to the alloy addition calculated by an alloy charging model so as to realize on-line fine tuning and narrow hardenability strip steel control of the chemical components in the molten steel refining process. The method in the invention can be used to produce the end quenching steel of which the hardenability bandwidth is 4HRC.
Owner:SHOUGANG CORPORATION

Soft floating body unit, pipeline pole based on floating body unit, generating station and air charging model

The invention relates to a soft floating body unit, a pipeline pole based on the floating body unit, a generating station and an air charging model. The floating body unit comprises a floating body and a supporting body, wherein the floating body is manufactured from soft airtight material; the floating body floats in water after being inflated; when the floating body is covered with water and suspended below water surface, at least part of the supporting body exposes and is kept above the water surface; the supporting body of the floating body unit pipeline pole is arranged to be a rigid supporting rod; a connector for mounting and connecting a pipeline is arranged at the upper end of the supporting rod; the floating body is fixed to the water bottom through an anchor chain or a cable; the floating generating station, the supporting column of the floating body unit or a floating body platform are provided with generating devices; the floating body unit air charging model and the supporting body are manufactured into air tightness structures through soft materials; after air charging, the air charging model with special shape can be formed. The floating body unit is high in strength, light in weight, small in cost, convenient for mass manufacturing and implementation, and provides a feasible solution for commercial development and utilization of ocean energy resources and resources.
Owner:陈佳宇

Intelligent charging method for centralized charging station

The invention discloses an intelligent charging method for a centralized charging station in the technical field of power system. A technical scheme is as below: firstly, conducting classification treatment on a battery on the basis of state of charge of the battery at alternating current moment; secondly, based on a closed-loop supply chain theory, constructing a coordination model of a charging station and an alternating current point based on a forward supply chain; and constructing a coordination model of the alternating current point and a user, based on a reverse supply chain; and finally optimizing battery access charging in the station by using a constrained multi-objective integer differential evolution algorithm. The constrained multi-objective integer differential evolution algorithm takes full consideration of limit for battery charging at different access time, and introduces an initial optimizing upper bound method with variable weight; and because of the many constraints within a charging model, a dynamic constraint implementation method based on population information is introduced in. The method is suitable for various multi-objective integer optimization problems, and has good robustness, fast convergence speed and good global search ability.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Electric automobile public charging facility planning method

The invention relates to an electric automobile public charging facility planning method, more specifically, relates to an electric automobile public charging facility planning method. According to the construction type difference and the characteristics of the electric automobile, the charging piles are divided into two types of high-power quick-charging piles and small-power slow-charging piles;the charging behavior characteristics of all types of electric automobiles are analyzed, an electric automobile charging model is adopted, the proportion of the charging time occupied by the public charging requirement and the self-charging requirement is distinguished, the total demand of all types of electric automobiles on the public charging amount is calculated, and through the combination of the charging capabilities of the quick/slow charging piles, the number of charging piles contained in an integrated charging station and the number of scattered charging piles, the total demand of an integrated city charging station and scattered public charging piles are calculated, and furthermore, the setting sites and quick/slow charging pile number of electric automobile public charging facilities are planned according to the actual construction conditions of the local public charging facilities and the principle of demand priority.
Owner:GRID POWER PLANNING & RES CENT OF GUANGDONG GRID POWER CO LTD +1

Charging load model establishment and node voltage calculation method of electric vehicle

The invention discloses a charging load model establishment and node voltage calculation method of an electric vehicle. The method comprises: S1, establishing a load charging model of an electric vehicle; S2, establishing a dynamic load model of a power distribution system; S3, giving access points of all load charging models in the power distribution system; and S4, analyzing the impact of electric vehicle charging on the power distribution system. According to the invention, three kinds of charging load models are established, so that the result is suitable for the actual circumstance and become reliable. And on the basis of calculation of the distribution probability characteristics of node voltages of the three models, the following conclusions are made: firstly, conventional chargingmode has the greatest influence on the operational stability of the distribution network; secondly, with the quick charging mode, the peak-to-valley difference of the load is increased substantially,so that economical operation of the grid is affected greatly; and thirdly, with increasing of the proportion of replacing the battery charging mode, the peak-to-valley difference of the load is reduced and the economical efficiency of the grid operation is increased, and the stability of distribution network operation of the power system is enhanced. Therefore, the charging load model establishment and node voltage calculation method has the great significance in research and development of charging vehicles in the field.
Owner:STATE GRID CORP OF CHINA +2

Multi-benefit subject coordination game scheduling method considering EV vehicle owner willingness

The invention relates to a multi-benefit subject coordination game scheduling method considering EV vehicle owner willingness. The method comprises the steps that S1,establishing an EV load polymer charging scheduling model wherein the EV load polymer charging scheduling model comprises an EV access moment and driving probability model, an EV cluster charging model and an EV vehicle owner willingness probability function model; S2, according to the established EV load aggregate charging scheduling model and the distributed power supply model, establishing a master-slave non-cooperative game model of a power distribution network, a lower-level EV load aggregate and a distributed power supply benefit subject to carry out day-ahead optimal scheduling; and S3, performing intra-day real-time optimization scheduling based on peer-to-peer cooperative games of the lower-level DGs and the load aggregate main bodies under the time-of-use electricity price determined by day-ahead optimization andthe basic strategy of each main body. Through two-stage game scheduling, the reactive power regulation capability of the distributed power supply can be fully stimulated, so that the safe and stableoperation of the power distribution network can be consciously maintained when multiple benefit subjects chase own benefits to be maximized.
Owner:FUZHOU UNIVERSITY

Charging control method for electric vehicles in charging station

The invention discloses an orderly charging control method for electric vehicles in a charging station. The method comprises the steps of: building a vehicle charging model through employing the charging energy and charging price of each vehicle in each time period as the input and the charging income of each vehicle as the output; constructing a charging station model by taking the charging electricity price of each vehicle, the electricity purchasing price of the charging station and the charging energy of each vehicle in each time period as input and taking the charging income of the charging station as output; optimizing the charging station model according to a charging electricity price constraint and the balance constraint of the vehicle charging energy, and determining the optimalcharging electricity price; determining an aggregated game model of vehicle charging according to the vehicle charging model and the optimal charging electricity price; and solving the aggregation game model by using a distributed solving algorithm to determine the charging plan of each vehicle. According to the method of the invention, the aggregation game model of vehicle charging is established, the coupling relationship between the charging vehicles is processed, the optimal charging plan is made for the vehicles in the charging station, and the charging operation efficiency of the vehicles in the charging station is improved.
Owner:国网重庆市电力公司营销服务中心 +1

Charge control method of photovoltaic charge controller

A charge control method of a photovoltaic charge controller is characterized in that charging models needed by a storage battery energy storage system are obtained through judgment, corresponding control algorithms are adopted according to the different charging models to obtain input voltage instructs, and the purpose of accurately and fast controlling the charging models is achieved through a double closed loop of input voltage and an output current and feedforward control. The charging models are all used for controlling the input voltage so as to enable the control algorithms to be simple, convenient and practical, and smooth switchover among the charging models can be achieved. The photovoltaic charge controller is enabled to have the advantages of being high in dynamic response speed and control precision, and simple in control procedures through a control method of combining of the closed loop and the feedforward control. The purposes of carrying out high-efficient, fast and accurate maximum power tracing, equalized charging and floating charging continuation multi-model charge control on the storage battery energy storage system through the photovoltaic charge controller are well achieved. According to the charge control method of the photovoltaic charge controller, photovoltaic charging speed can be improved, voltage control precision of a storage battery group can be improved, and service life of a storage battery is prolonged.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Electric vehicle ordered charging strategy and simulation method thereof

The invention discloses an electric vehicle ordered charging strategy and a simulation method thereof. The method comprises the following steps: establishing a user side objective function; establishing a power grid side objective function; integrating the user side objective function and the power grid side objective function, and establishing an electric vehicle ordered charging model in the district; introducing constraint conditions to perfect an electric vehicle ordered charging model in the district; and realizing specific calculation and regulation according to the orderly charging model of the electric vehicle in the district. According to the technical scheme, the electric vehicle charging load in the regional power distribution network is used as a research object, the influence on the power grid node voltage and the system network loss when the electric vehicle is accessed disorderly is analyzed, then the minimum user side charging cost and the minimum power grid side load peak-valley difference are used as objective functions, the orderly charging optimization model of the electric vehicles in the districts is established, the objective function is solved by using the adaptive particle swarm optimization, an optimal electric vehicle charging mode is obtained, and the peak-valley difference of the system load can be effectively reduced.
Owner:HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +1
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