34 results about "Power pool" patented technology

Power supplies for pool and spa equipment are disclosed. In one embodiment, the power supply includes a buoyant housing, a peripheral float, at least one solar cell positioned on the buoyant housing for collecting sunlight and converting same to electrical energy, and a power cable for interconnecting the power supply and pool/spa equipment. In other embodiments, first and second inductive power couplings are provided for powering pool and spa equipment. The power couplings can also be installed using existing plumbing features of the pool or spa.

The present invention provides for an Ethernet switch node providing power over Ethernet functionality for use in a power pooling system comprising at least one pooling controller, the Ethernet switch node providing power over Ethernet functionality comprising: a DC power source; an electrical load connected to the DC power source; a power sharing circuit responsive to an output of the at least one pooling controller, the power sharing circuit being operative to govern electrical power provided by the DC power source; and a DC electrical power connection to the DC power source and the electrical load, permitting external DC electrical power flow to and from the DC electrical power consuming and providing entity, wherein the Ethernet switch node providing power over Ethernet functionality has multiple modes, including a first operative mode in which the DC power source may provide more electrical power than is consumed by the electrical load.

The present invention provides for a DC power pooling system for an Ethernet network comprising: a plurality of DC electrical power consuming and providing Ethernet nodes, each of the plurality of DC electrical power consuming and providing Ethernet nodes having at least a first operative mode in which it may provide more electrical power than it consumes and a second operative mode in which it may consume more electrical power than it provides; electrical power interconnections, interconnecting the plurality of DC electrical power consuming and providing Ethernet nodes and permitting electrical power flow thereto and therefrom; and at least one controller in communication with the plurality of DC electrical power consuming and providing Ethernet nodes and being operative to employ the communication to govern electrical power provided by at least one of the plurality of DC electrical power consuming and providing Ethernet nodes.

The invention relates to a direct current microgrid, specifically relates to a power pool-based dual-layer bus direct microgrid and a control method therefor, and solves the problems of high energy conversion loss and low system operating efficiency of the existing single-bus direct current microgrid, and high probability of power interference and poor system operating economy of the existing dual-bus direct current microgrid. The power pool-based dual-layer bus direct microgrid comprises an energy storage voltage regulation system, a direct current sub grid I and a direct current sub grid II, wherein the energy storage voltage regulation system comprises a power pool, a lithium battery pack, a DC/DC converter I, a DC/DC converter II and a DC/DC converter III; the power pool comprises a supercapacitor and a middle bus in parallel; the direct current sub grid I comprises a photovoltaic power generation unit I, a direct current load I and a direct current bus I; the direct current sub grid II comprises a photovoltaic power generation unit II, a direct current load II and a direct current bus II; and the direct current sub grid I and the direct current sub grid II have different voltage levels. The power pool-based dual-layer bus direct microgrid is applicable to a variety of fields.

A power distribution system is adapted to a management module connected to a plurality of servers, each of which is varied in power consumption in response to a power mode and performance thereof, via a power allocation request line and a power allocation response line. The management module records the upper-limit power setting, the power allocations, and the power pool with regard to the servers. The server records the power mode, the power allocation, the upper mode request threshold, and the redundant power which is calculated based on the difference between the power allocation and the actual power consumption. The management module recovers the redundant power from the server so as to update the power pool. Upon receiving a power allocation request, the management module distributes at least a part of the power pool to the server, thus allowing the server to shift the power mode to the upper mode.

The present invention provides for a supply interface unit for use in a DC power pooling system, the DC power pooling system comprising a plurality of DC electrical power consuming and providing entities, each of the DC electrical power consuming and providing entities having at least a first operative mode in which it may provide more electrical power than it consumes and a second operative mode in which it may consume more electrical power than it provides, and at least one pooling controller, the supply interface unit comprising: a first port and a second port; a controller; at least one controllable switch, operable by said controller to enable current flow from one of said first port to said second port and said second port to said first port; and at least one current limiter, operable by said controller to limit said current flow.

A power pool overload centralized decision-making real-time emergency control method, includes: the host computer reads in the operational real-time data of the electric network from the energy management system and the control device through the communication interface; the host computer computes the optimized emergency control project based on the algorithm of the elimination line of the optional control measurement of the generator and the load and the loading combination performance index of the transformer; the host computer sends down the control project to the control device through the communication interface, and realize the control project through the function of the control device. The invention makes full use of the energy management system and the control device, from the overall situation of the electric network, solves the centralized decision-making and the real-time emergency control of the overloading of the power pool, which has correct and reliable judgement to the overload, fast action and the chain failure of the single node action in the traditional technology is not present.

A reliability design approach of the power pool safe stable coordination defense system includes a control framework with the site population and function division, wherein the control framework includes a dispatching center station, a control main station, a control sub-station and a control execution station, the control sub-station and the control execution station realize the regional control; and the control main station take charge of the coordination of each regional control; the dispatching center station take charge of the computation of the online control strategy and the online coordination control between the main control stations. The invention effectively solves the reliability problems of the coordination defense system caused by the device, the communication and the software and the like; the online control framework of 'site population and function division' avoids the paralysis of the whole system caused by the local device and the communication failure, advances the whole reliability of the coordination defense system; the computing device and the control device adopt the redundant configuration, which enhances the local reliability of the system; the coordination control system adopts the online and the off-line operation mode switching mechanism, which advances the operation reliability of the system.

The invention discloses a solving method of the takeoff performance of a ground effect vehicle. The takeoff performance comprises takeoff water-leaving speed, water-leaving time and water skiing distance. The method comprises the steps of carefully analyzing a relationship between hydrodynamic resistance/thrust/ angle of trimming in full-aircraft powered pool model test data and speed, a relationship between the hydrodynamic resistance/thrust/ angle of trimming and the center of gravity, and the relationship between the hydrodynamic resistance/thrust/ angle of trimming and weight; finding feature points; carrying put segmentation fitting on the hydrodynamic resistance, the thrust and the angle of trimming to obtain the relational expressions of the hydrodynamic resistance, the thrust and the angle of trimming; obtaining the relational expression of the hydrodynamic resistance and the speed by combining with a CFD (Computational Fluid Dynamics) computation result or a wind tunnel test result; and quickly and effectively calculating the takeoff performance of the ground effect vehicle in different states according to an equation of motion of the ground effect vehicle. The invention provides a computation method suitable for the takeoff performance of the ground effect vehicle and provides a good condition for the total performance computation of the ground effect vehicle.

The invention provides a combined regenerative energy power supply device which comprises a wind power generation unit, a photovoltaic power generation unit, a high-capacity energy storage element and a coordination control unit, wherein the high-capacity energy storage element is used for storing electric energy; the coordination control unit is used for enabling the wind power generation unit or the photovoltaic power generation unit to charge the high-capacity energy storage element when the electric quantity produced by the wind power generation unit and the photovoltaic power generation unit is higher than the demand of users in a region, and supplying power to an outside power pool system under the condition that the electric energy is surplus after the charging of the high-capacity energy storage element is finished; and the coordination control unit is also used for cutting off the wind power generation unit and the photovoltaic power generation unit and enabling the outside power pool system to charge the high-capacity energy storage element and supply power to loads of the users in the region when the electric quantity produced by the wind power generation unit and the photovoltaic power generation unit is lower than the demand of the users in the region. According to the invention, line loss and construction investment caused by remote locations of power generation places and long distances from loads can be effectively reduced.

The invention belongs to the technical field of power electronics, and discloses a charging topology network and a direct current contactor control system and method in a charging system. The charging topology network comprises a plurality of groups of power modules, a plurality of groups of direct current contactors and a plurality of groups of terminals. The plurality of groups of direct current contactors comprise a plurality of groups of first direct current contactors, a plurality of groups of second direct current contactors and a plurality of groups of main direct current contactors; the plurality of groups of power modules are composed of at least two groups of power modules; each group of power modules is connected with at least one group of first direct current contactors, and the multiple groups of first direct current contactors are connected in series to form an annular structure; each group of power modules is connected with a corresponding terminal through a group of main direct current contactors; and each group of power modules is electrically connected with the direct current contactors connected with any one group of non-adjacent power modules on the annular structure through one group of second direct current contactors. According to the invention, different contactors are attracted to form different channels which are connected with different power modules to form a power pool of the terminal, so that the purpose of power switching is achieved.

An automatic identification control method of the power pool chain failure and allopatry multipoint failure, including four steps: (1) building the mapping function of the forecast failure set and the failure element; (2) building a table Z with n*n elements and obtaining the values of each element; (3) building another table Q with n*n elements, wherein the initial value of the element is zero, when the element i goes out of order, the value of the element in i-rank row of table Q is the same with that in table Z, then looking up the presence of nonzero element in the i-th row of the table Q, namely the forecast failure of the failure set; (4) setting the value of the element in the i-th rank of table Q as zero after the element i goes out of order for the period T, namely the failure of the element i invalidates, so the failure generated afterwards is not combined with the failure. The invention has fast judging speed and high reliability.

A method of optimizing downlink for communications between a base station and mobile stations in a wireless communication system involves acquiring user identifiers and geometry values for mobile stations that are associated with registered users of the system, associating modulation control scheme (MCS) power values with respective users in response to respective geometry values, initializing a power pool, identifying users that have an MCS power value greater than a reference MCS power value as high power users and calculating a power difference for each of the high power users. The power difference is a difference between the geometry value associated with each of the high power users and a reference geometry value associated with the reference MCS power value respectively. The power differences associated with respective high power users are accumulated in the power pool, by summing the power differences. Users that have an MCS power value below the reference MCS power value are identified as low power users and increased geometry values are associated with at least some of the low power users while the power pool is reduced by corresponding amounts until the power pool is depleted. New MCSs are then determined for at least some of the low power users based on the increased geometry values and control information is transmitted to the low power users using modulation and control schemes identified by the corresponding new MCSs at power levels associated with the new MCSs.

The invention provides a method and a system for dynamically allocating power resources, and a machine readable medium. The system includes a central controller connected to automatic transfer switches. The system also includes power zones. Each of the power zones includes server devices. Each of the automatic transfer switches are connected to at least one of the power zones. The system also includes a power pool connected to a power source. The power pool is connected to the central controller configured to dynamically allocate power of the power pool to the power zones.

The invention provides a floating power output device. The floating power output device comprises a power pool and a support, the support is arranged in the power pool, a crawler belt is arranged on the support, an air cylinder is fixedly arranged on the crawler belt, the crawler belt is arranged on a power output shaft in a sleeving mode, and the power output shaft is fixed to the support through a bearing seat; a screw is arranged in the air cylinder, one end of the screw is fixedly connected to the sealing disc, the other end of the screw is connected with a nut, an inner gear structure is arranged in the nut, an outer gear structure is arranged on the outer surface of the nut, the nut is arranged outside the air cylinder, an air inlet and an air outlet are formed in the bottom of the air cylinder, and the air inlet is connected with a main air bag. The air cylinders are divided into a plurality of groups of air cylinders, and each group of air cylinders comprises two air cylinders which are meshed with each other through an outer gear of a nut; the nut on any air cylinder is matched with a gear piece arranged in the power pool in a working mode.