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603 results about "Energy balancing" patented technology

Submodule grouped voltage-sharing control method for modular multi-level current converter

InactiveCN102916592AGuaranteed uptimeImprove capacitor voltage sorting speedAc-dc conversionEnergy balancingCapacitance
The invention discloses a submodule grouped voltage-sharing control method for a modular multi-level current converter, and belongs to the technical field of power transmission and distribution. According to the technical scheme, the method comprises the following steps: performing average grouping on submodules according to the number of bridge arm submodules, and acquiring voltage values of each group of submodules; calculating total voltage of each group, a bridge arm voltage sum and energy balance factors of each group, obtaining the number of submodules to be switched according to a modulation strategy, and calculating the number of submodules to be switched of each group; and finally, sequencing each group of submodules according to the voltage values, and switching each group of submodules according to the number of submodules to be switched of each group. The method has the beneficial effects that on the premise that the current converter runs normally, an energy balance factor is introduced, and the bridge arm submodules are subjected to a grouped voltage-sharing strategy, so that the aims of increasing the capacitance and voltage sequencing speed of the submodules, balancing energy between the modules and improving the capacitance and voltage fluctuation situation of the submodules can be fulfilled.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Method and morphologically adaptable apparatus for altering the charge distribution upon living membranes with functional stabilization of the membrane physical electrical integrity

A method and morphologically adaptable apparatus for altering the charge distribution upon living membranes with functional stabilization of the membrane physical electrical integrity further comprising a method for using quadripolar, circular, center charged, energy balanced magnetic device in a four (4) magnet array of alternating polarity in which the magnetic poles are in multiple planes and are separated by a predetermined distance which provide an effective magnetic sphere of influence on all adjacent poles to suppress the firing of action potentials of mammalian sensory neurons. The method and apparatus further provides a static magnetic device for production of a magnetic field for treatment of various disorders that can be focused at the site of pain or edema to deliver a gradient in the magnetic field to prevent or reduce charge flow. Further there is provided a static magnetic device for production of a magnetic field for treatment of disorders wherein the device provides a static magnetic field such that the focused magnetic field gradient is oriented To be perpendicular to the neuron or membrane charge flow providing maximum deflection of the ion or charge flow.
Owner:GRADIENT TECH

Non-uniform clustering method for cluster wireless sensor network based on energy balance

The invention relates to a power balancing-based non-uniform clustering method for a cluster wireless sensor network, relating to wireless communication technologies. The method comprises the steps of dividing a wireless sensor network monitoring region with uniformly distributed nodes into a non-uniform a ring, determining the positions of cluster head nodes according to an equivalent distance method, ensuring a reliability link index deltap of end-to-end communication between the cluster head nodes to cluster nodes, and setting up an energy consumption solving equation. An optimal ring radius vector is obtained by optimizing parameters of the energy consumption solving equation of the cluster head nodes with a steepest gradient descent algorithm based on the idea of 'power-balancing'. The cluster size is finally obtained by adjusting the positions and the transmission power of the cluster head nodes in accordance with the optimal ring radius vector, so as to balance energy consumption among the cluster head nodes and prolong the network life cycle. The method remarkably prolongs the network life cycle, improves the efficiency of the routing protocol and the media control protocol, and provides a support basis for time synchronization, data integration and target positioning technologies.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

System for monitoring complicated oil deposit flooding conditions

The invention discloses a system for monitoring complicated oil deposit flooding conditions, comprising an input unit, a multi-level processing unit and a display unit, wherein the input unit is used for inputting well point geologic parameters; the multi-level processing unit is used for building hidden geologic characteristic parameters according to the well point geologic parameters input by the input unit, finishing multi-layer, multi-well, multi-phase and multi-driving power energy balance analysis and calculation of a block, further building an injecting and extracting correspondence relationship among wells and carrying out comprehensive inversion treatment on the layered and partitioned flooding conditions by using improper functions to obtain distribution data of various sucking sections and layered flooding conditions of the block and a single well in different periods; and the display unit is used for displaying the injecting and extracting correspondence relationship amongwells, built by the multi-level processing unit, and the obtained diagram result data of the distribution of the various sucking sections and the layered flooding conditions of the block and the single well in different periods. The system can obtain accurate layered flooding condition data and different levels of section analyzed result data, improve the extracting precision, and save the manpower and material resources.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Lithium ion battery energy balance system and implementation method thereof

The invention discloses a lithium ion battery energy balance system and an implementation method thereof, the system comprises a lithium ion battery pack, n voltage detection circuits, n DCDC converters, n main control chips, a data processing chip, a CAN communication module and a current detection circuit, the lithium ion battery pack consists of n single lithium ion batteries which are connected in series, the input end of the Kth voltage detection circuit is connected with the positive electrode and negative electrode of the kth single lithium ion battery, sampling is started when voltage detection requires conducting, the sampling value is isolated and then transmitted to the kth set of main control chips, each DCDC converter directly carries out charging and discharging to each single lithium ion battery in the lithium ion battery pack respectively through controlling the switch of an MOS pipe, simultaneously, the balanced current is adjusted through switching frequency, the lithium ion battery energy balance system and the implementation method thereof use a second-order RC model to simulate a lithium ion battery chemistry model, and uses the SOC generated by linear regression as the judging basis of lithium ion battery equalization, thereby achieving the equalization purpose.
Owner:SHANGHAI JIAO TONG UNIV +1

Extremum disturbed particle swarm optimization based SDWSN energy-balanced routing algorithm

The invention relates to an extremum disturbed particle swarm optimization based SDWSN energy-balanced routing algorithm and belongs to the technical field of wireless sensor networks. The algorithm comprises the steps of firstly selecting a cluster head by giving consideration to residual energy, position and energy balanced information of nodes and utilizing improved extremum disturbed particleswarm optimization algorithm, and dividing the whole network dynamically into clusters different in size based on a distance from the nodes to the base station, node residual energy and the number ofneighbor nodes; and secondly, saving energy consumption during cluster division by adopting a way of performing global clustering and k local cluster head updating per each period; and finally, building a shortest routing tree based on factors such as link energy consumption, node residual energy and in-cluster node number by adopting a centralized mode by a sensor control server when multi-hop routing is built. The extremum disturbed particle swarm optimization based SDWSN energy-balanced routing algorithm can efficiently save energy and balanced network energy consumption and prolong the life circle of the network.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Five-element energy balance moxa stick and manufacturing method thereof

The invention discloses a five-element energy balance moxa stick and a manufacturing method thereof. The five-element energy balance moxa stick comprises a moxa layer (1), a tubular medicine layer (2) and a medicine column layer (3), wherein the tubular medicine layer (2) is located in the moxa layer (1), and the medicine column layer is located outside the moxa layer. The tubular medicine layer is formed by connecting a heart balancing medicine column (2-1), a lung balancing medicine column (2-2), a kidney balancing medicine column (2-3), a liver balancing medicine column (2-4) and a spleen balancing medicine column (2-5) in series; the medicine column layer comprises a heart balancing medicine column layer (3-1), a lung balancing medicine column layer (3-2), a kidney balancing medicine column layer (3-3), a liver balancing medicine column layer (3-4) and a spleen balancing medicine column layer (3-5). According to the five-element energy balance moxa stick, the five medicine columns correspond to the five elements, the five elements correspond to five internal organs of the human body, five-element energy balance of the heart, lung, kidney, liver and spleen can be ensured through the five medicine columns, various symptoms caused by sub-health are eliminated, and the purpose of body building is achieved.
Owner:烟台仁成艾灸生物科技有限公司

Wireless sensor network energy balance route optimization method based on cluster head expectation

ActiveCN104936230AAlleviate the problem of unbalanced energy consumptionEvenly distributedNetwork traffic/resource managementNetwork topologiesEnergy balancingHigh energy
The invention discloses a wireless sensor network energy balance route optimization method based on cluster head expectation. An algorithm considers two optimal objects which are cluster load distribution condition and node residual energy while electing cluster heads, and ensures the number of cluster heads in each round to be in an expected range by improving a threshold value while electing cluster heads so as to solve the problem that the energy consumption of the cluster heads is unbalanced. Simultaneously, the algorithm considers distance weight and residual energy weight by controlling coverage areas of different cluster heads in different positions so that the member node distribution of the cluster heads could be relative even to improve node energy efficiency. The algorithm presented by the invention has relative high energy efficiency, well balances the energy consumption of nodes in the network, and enables the cluster head distribution and number to be more stable. The optimization method of the invention could improve data transmission amount, prolongs network lifetime and preferably meet the requirement of the wireless sensor network to the network lifetime in a periodic monitoring environment.
Owner:HUAQIAO UNIVERSITY
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