653 results about "Power exchange" patented technology

A power exchange device includes: a connection portion that is connected to another device; a wireless communication portion that performs wireless communication with a power exchange device in the vicinity; a power exchange portion that exchanges power with the power exchange device in the vicinity; a power management portion that causes the power exchanged by the power exchange portion to be input and output between the connection portion and the other device; and a power control portion that, after the wireless communication portion has performed the wireless communication with the power exchange device in the vicinity, controls whether to cause the power exchange portion to exchange power with the power exchange device in the vicinity depending on a power source state of the other device.

A method, system and computer program product enhance the commercial value of electrical power produced from a wind turbine production facility. Features include the use of a premier power conversion device that provides an alternative source of power for supplementing an output power of the wind turbine generation facility when lull periods for wind speed appear. The invention includes a communications infrastructure and coordination mechanism for establishing a relationship with another power production facility such that when excess electrical power is produced by the wind turbine facility, the excess may be provided to the power grid while the other energy production facility cuts back on its output production by a corresponding amount. A tracking mechanism keeps track of the amount of potential energy that was not expended at the other facility and places this amount in a virtual energy storage account, for the benefit of the wind turbine facility. When, the wind turbine power production facility experiences a shortfall in its power production output it may make a request to the other source of electric power, and request that an increase its power output on behalf of the wind turbine facility. This substitution of one power production facility for another is referred to herein as a virtual energy storage mechanism. Furthermore, another feature of the present invention is the use of a renewal power exchange mechanism that creates a market for trading renewable units of power, which have been converted into “premier power” and/or “guaranteed” by secondary sources of power source to provide a reliable source of power to the power grid as required by contract.

A reconfigurable system capable of autonomously exchanging material from unmanned vehicles of various types and sizes. The system comprises an environmental enclosure, a landing area, a universal mechanical system to load and unload material from the unmanned vehicle, and a central processor that manages the aforementioned tasks. The landing area may comprise a one or more visible or non-visible markers/emitters capable of generating composite images to assist in landing the unmanned vehicle upon the reconfigurable, autonomous system.

The invention relates to an optical storage alternating current and direct current hybrid micro-grid system and a control method of the system. The system and the method are characterized in that a hybrid micro-grid comprises an alternating current micro-grid subsystem, a direct current micro-grid subsystem and a power exchange control system; the alternating current micro-grid subsystem comprises an alternating current side photovoltaic power generation unit, an alternating current load and a grid-connected interface; the direct current micro-grid subsystem comprises a direct current side photovoltaic power generation unit, a storage battery energy storage unit and a high/low voltage direct current load; the power exchange control system comprises a two-way AC/DC power converter, a transformer, a micro-grid controller and a communication system, the storage battery energy storage unit is used for controlling direct current bus voltages, and P/Q control is adopted in the two-way AC/DC power converter. Under the stabilizing effect of direct current side energy storage, the direct current micro-grid subsystem conducts photovoltaic power generation and is connected to a large power grid through the alternating current micro-grid subsystem at constant power, and the photovoltaic utilization rate is increased. By means of the control method, the power supply reliability and economical efficiency of the hybrid micro-grid are effectively improved.

Portable docks are provided for use with a camera having a camera memory and a camera power supply. A dock has a dock memory, a dock power supply with sufficient power so that the camera power supply can be charged with at least sufficient power to enable the camera to perform completely at least one additional camera function, and an electrical connector adapted to engage a mating camera connector for data communication and power exchange therethrough. A control system enables the transfer of image related data between the camera memory and the dock memory. The dock memory, power supply, electrical connector, and control system are held by a body adapted to receive the camera so that the camera connector can engage the electrical connector.

The invention belongs to the field of electric car power distribution and particularly provides a small-size automatic power exchanging station. The small-size automatic power exchanging station aims at solving the problems that an existing power exchanging station is large in land occupation area, civil engineering needs to be conducted, transportation is difficult, and full-automatic power exchanging cannot be conducted. For the purposes, the small-size automatic power exchanging station comprises a battery bin, a power exchanging platform, a power exchanging system and a control system. The battery bin is used for storing a battery and charging the battery. The power exchanging system is used for replacing a battery of an electric car with the battery of the battery bin. The power exchanging platform is used for parking the electric car and lifting the electric car through a lifting device. According to the small-size automatic power exchanging station, the electric car is lifted up through the lifting device, the power exchanging platform and the battery bin are wrapped up through a container at the same time, therefore, any civil engineering does not need to be conducted, the power exchanging station can be overall carried, the position of the power exchanging station can be arranged flexibly, and the size of the power exchanging station can be freely expanded as required.

System and method for the distributed control and management of a microgrid. The system comprises a plurality of intelligent devices (1, 1′) in communication through a network (8) with a data model unit (2) for storing global parameters of the microgrid, an input profile generator module (4) and an exchange manager module (6). When a global parameter is updated in a data model unit (2), it is replicated in every data model unit (2). A first set of intelligent devices (1) is associated and in communication with different power devices (3) of the microgrid, the data model units (2) collecting data monitored by the power device (3) and the input profile generator module (4) iteratively calculating an available range of power that the power device (3) can produce or consume. The exchange manager module (6) iteratively calculates power exchanges between different power devices (3) of the microgrid considering the available ranges of power of the power devices (3) and at least one input parameter.

The invention relates to a multi-mode switching coordination control method for a direct current micro-grid system. Specific models are built for each micro-grid unit in the micro-grid system, working modes of the operation of the system are divided, various disturbance influences in various modes are full considered, and stable operation of the system in grid-connected and off-grid operation stable state and various disturbances thereof such as mutual switching and load and generating fluctuation is realized. According to the method, according to the load bus voltage and specific condition, the control strategy is reasonably adjusted, and the system can operate in a stable manner in different working modes and conditions; the micro-grid units and the coordination control method between the micro-grid units are controlled regarding the voltage as the control main body, stable operation of the system is guaranteed, frequent power exchange between the micro-grid units is avoided, and the power consumption is reduced; and compared with the prior art, the power grade of a converter is reduced, the system security and the reliability of energy storage are improved, and the failure rate due to an energy storage system is reduced.

The invention discloses a dynamic random scheduling control method for a power distribution network containing a micro-grid. The method is a dynamic random scheduling control method of comprehensively considering the minimal planned operation cost of the micro-grid and the distribution network. The method comprises the following steps: firstly, respectively building chance-constraint programming models for the minimal expected planned operation cost of the micro-grid and the distribution network, and determining the chance-constraint programming models by a particle swarm optimization algorithm and a two-point estimation method; searching a power exchange value with the minimal comprehensive expected planned operation cost by the particle swarm optimization algorithm according to a power exchange control interval, between the micro-grid and the distribution network, obtained by respective optimization results of the micro-grid and the distribution network, so as to determine the optimal dynamic random scheduling control scheme of the micro-grid and the power distribution network; and finally validating the practicability by an improved IEEE 33 node standard system algorithm.

The invention relates to an electromobile power exchanging station site selection method, which is used for selecting sites for an electromobile power exchanging station and solves the problems of difficulty in site selection and planning of the electromobile power exchanging station. The power exchanging station site selection method gives consideration to both benefit of power station operating companies and power exchangers, leads the minimum total cost of the power station operating companies and the power exchangers to be the target function, considers traffic convenience, timeliness and power exchanging station total capacity constraint, adds constraint of hard time windows on power exchanger travelling and power exchanging total time, and selects sites for the electromobile power exchanging station. The method considers different considerations of benefit of both sides in different planning stages with the minimum total cost of the power station operating companies and the power exchangers as the target function, and selects sites for the electromobile power exchanging station in different planning stages by changing benefit weight of the power station operating companies and the power exchangers. The constraint of the hard time windows includes traveling time of a driver reaching a goal power exchanging station, queuing time and power exchanging time.

A cooperative game-based micro-grid optimal dispatching method for charging, exchanging and storing integrated power plants includes modeling photovoltaic power, wind power and electric vehicle powerexchange demands by using robust optimization considering electric vehicle power exchange demand and stochastic characteristics of photovoltaic and wind power generation; the optimal dispatching modelof upper micro-grid with minimum power supply cost being constructed; the life loss cost model and operation loss model of integrated power plant being established; constructing the optimization model of lower-level charging-replacing-storage integrated power station with the objective function of maximizing CSSIS profit; the optimal dispatching model of charge-exchange-storage integrated microgrid based on cooperative game being constructed. The model is solved by non-dominated sorting genetic algorithm with elite strategy (NSGAII) combined with solver CPLEX. The invention provides the theoretical basis and technical support for the construction of the charging and replacing infrastructure of the urban electric vehicle, and is beneficial to improving the economic benefits of the operation of the electric network, the micro-grid and the charging and replacing power station.

The invention discloses a DC residential energy router based on a multi-port converter and a control method thereof. The energy router is characterized in that the energy router is composed of four H bridge modules, two-way buck/boost converter modules BB1 and BB2, four external series inductors, and a high-frequency four-winding transformer; driving signals used to control on-off of full-control power devices in the converter modules BB1 and BB2 are obtained by means of pulse width modulation; and driving signals used to control on-off of full-control power devices in the H bridge modules are obtained by means of single phase shift modulation. The energy router integrates photovoltaic energy, stored energy, a power grid, and a residential load with different voltage grades. Two-way power flow between stored energy and the power grid is realized. Maximum use of renewable energy, reduction in power exchange with the power grid, charge and discharge based on stored energy, input source use priority, control on port voltages and power balance control in the system are realized.

The invention provides a power exchanging cabinet and a method for charging a battery of an electric vehicle. The power exchanging cabinet includes a plurality of charging bins; an empty charging bin opening unit used for receiving information of success of authentication to the power exchanging cabinet from a background server, and opening the empty charging bin according to the authentication success information; a battery detection unit used for receiving information that the battery is put in from the empty charging bin, and detecting whether the battery that is put in is a battery of a predetermined model according to the information that the battery is put in; a fully-charged charging bin opening unit used for opening the fully-charged charging bin according to a predetermined rule when the battery that is put in detected by the battery detection unit is the battery of the predetermined model; and a charging unit used for charging the battery that is put in. Through the power exchanging cabinet provided by the invention, relatively good riding experience can be provided to a user.

The invention discloses a method for controlling power coordination of a light storage micro-grid system. The light storage micro-grid system comprises a photovoltaic cell array, two DC/DC converters, a storage cell energy storage device, an inverter and alternating-current and direct-current buses. The photovoltaic cell array is connected into the direct-current bus by the boost DC/DC converter, storage cells are connected into the direct-current bus by the boost and buck DC/DC converter, direct currents are converted into alternating currents by the direct-current bus via the inverter, the alternating currents are connected onto the alternating-current bus, and the direct-current bus and the alternating-current bus can be respectively connected with direct-current load and alternating-current load. The method is characterized in that structure diagrams of the light storage micro-grid system are given, and particular power exchange principles and particular working modes of the system are analyzed. The method has the advantages that light storage micro-grid system coordination control structures and MPPT (maximum power point tracking) control principles on the basis of dynamic impedance matching are given, accordingly, smooth power switch of the light storage micro-grid system can be controlled by the aid of the method, and the control precision of the system can be improved.

Circuits and methods for providing control of a power up sequence for supplying a gated power supply to a circuit portion. A power switch fabric is provided having more than two chains with more than two bits of control. The chains include power switches that are sequentially enabled in response to control signal to supply a virtual power supply to a gated circuit to support power gating. The power switches may include daughter switches and mother switches, where the mother switches are enabled later in time than the daughter switches. The enable signals to allow the virtual power supply to begin powering up may be timed to control the ramp up time, in rush current and peak current during the power up sequence of the virtual power supply. Methods for providing timing for the daughter and mother switches and enables to multiple chains in a power switch fabric are disclosed.

The invention relates to a washing mode of a washing machine and a full automatic washing machine thereof. During the washing, through a platen device which is arranged in a wash bucket and can perform axial reciprocating movement and a radial rolling device arranged on an output shaft, the forward and reverse rotating water flow, the axial reciprocating extruded water flow and the radial rolling effect are produced to perform repeated washing, flapping, kneading, extrusion, and rolling to clothes to ensure that containing water inside the clothes is subjected to large-amplitude strong power exchange with external water flow. The full automatic washing machine which washes according to the washing mode comprises an input shaft, a reducer, an external barrel, and an internal barrel, wherein the upper end of the reducer is connected with the internal barrel through an output shaft housing, the axial platen device is arranged in the internal barrel, the lower part of the internal barrel is provided with the radial rolling device, and an output shaft of the reducer is provided with a belt transmission device. The washing mode has the advantages that the washing mode greatly improves cleaning rate, has steady transmission and lower noise, automatically converts the working condition of washing and dehydration, effectively reduces the opening force of a brake bar, stabilizes a braking moment, and prolongs the life of the washing machine.

The invention discloses a system and a method for controlling a distributed power and energy storage system-containing power distribution network. The system and the method are used for controlling the optimized operation of the distributed power and the energy storage system, which are accessed in a synchronization way, in a power distribution network. The system and the method are used for computing the difference between a measured value of the exchange power of the power distribution network and an external power network and the optimum value or a planed target value obtained by means of optimal computation and defining into the running error of the power distribution network, and are applicable to the closed-loop control on the energy storage system and the distributed power, so that the power distribution network can be kept to be consistent with the actual value of the external power exchange power and the optimum value or the planed target value computed in an optimizing way.

The invention discloses an active tide control power grid and control method of a power exchange power node and a medium-voltage distribution network. The power exchange node is configured in a distribution network, two and more than two medium-voltage distribution lines are connected by the power exchange node, and the active tide and the reactive tide of the connected medium-voltage distribution lines is actively controlled through an AC(Alternating Current)/DC (Direct Current) converter in the power exchange node; the power exchange node comprises two or more than two medium-voltage distribution line incoming switches, distribution voltage reduction transformers corresponding to the two or more than two medium-voltage distribution line incoming switches, two or more than two AC/DC converters corresponding to the distribution voltage reduction transformers, a direct-current bus and a node state monitoring system. The power exchange node can continuously and smoothly control the active tide and the reactive tide of each connection line, prevents the switch from frequently switching on or off, increases a use ratio of equipment, prolongs the service life of the equipment and improves power supply reliability.

This invention relates to a share same power source multi purpose scanning device. It includes: a platform scanning meter, an automatic paper moving device, a motor and a power exchange mechanism. The platform-scanning meter has a scanning module and a transmission mechanism. The automatic paper moving device has a paper feeding mechanism; used to feed the documents to scanning module and scanning them. Then power exchange mechanism transports the motor power to transmission mechanism and paper feeding mechanism selectively.

A contactless power transfer system comprising a power exchanging coil configured to exchange power via a magnetic field, a field focusing element for focusing the magnetic field, and a compensation coil having a resonance frequency different from a resonance frequency of the field focusing element for matching an impedance of the contactless power transfer system and compensating a change in phase resulting from a misalignment in the contactless power transfer system.

The present invention discloses a micro-grid group architecture and an autonomous coordination control method thereof. The architecture mainly comprises an AC sub-network, a DC sub-network, a PEU and an EP. The PEU is mainly used for coordinating the power exchange among all sub-networks with the EP within a micro-grid group, so that the energy mutual aid of all sub-networks is realized. Meanwhile, the bus voltage and the frequency of each sub-network are maintained to be stable. The EP is mainly used for maintaining the stable operation of the DC bus voltage of the PEU and realizing the reasonable distribution of the exchanged net power required for the PEU. In addition, the invention provides a power coordination control method and a hierarchical coordination control method for the adaptive power exchange coefficients of the PEU and the EP respectively. In this way, the autonomous coordination control of the micro-grid group is effectively realized. The architecture and the method can be widely applied to the interconnection system of a plurality of AC and DC micro-grids.