184 results about "Load leveling" patented technology

A large-scale, capacitor-based electrical energy storage and distribution system capable of effectuating load-leveling during periods of peak demand on a utility, and of effectuating a cost savings associated with the purchase of electrical energy. A capacitor or multitude of capacitors may be charged with electrical energy produced by the utility, such as during periods of low demand or low cost, and discharged during periods of high electrical energy consumption or high electrical energy cost. One or more capacitors may be located at a consumer's residence or business. Alternatively, a farm of capacitors may be provided at or near a utility, or at or near a location experiencing high demand. In another embodiment, one or more capacitors may be located in or on a vehicle, such as an automobile, a truck, or a train of a light rail system.

A battery load leveling system for an electrically powered system in which a battery is subject to intermittent high current loading, the system including a first battery, a second battery, and a load coupled to the batteries. The system includes a passive storage device, a unidirectional conducting apparatus coupled in series electrical circuit with the passive storage device and poled to conduct current from the passive storage device to the load, the series electrical circuit coupled in parallel with the battery such that the passive storage device provides current to the load when the battery terminal voltage is less than voltage on the passive storage device, and a battery switching circuit that connects the first and second batteries in either a lower voltage parallel arrangement or a higher voltage series arrangement.

An improved Flash memory device with a distributed erase block management (EBM) scheme is detailed that enhances operation and helps minimize write fatigue of the floating gate memory cells of the Flash memory device. In the prior art, erase block management of a Flash memory device, which provides logical sector to physical sector mapping and provides a virtual rewriteable interface for the host, requires that erase block management data be kept in specialized EBM data tables to keep the state of the Flash memory device in case of loss of power. This placement of EBM data in a separate erase block location from the user data slows the Flash memory operation by requiring up to two writes and / or block erasures for every update of the user data. Additionally, one of the goals of the EBM control is to minimize write fatigue of the non-volatile floating gate memory cells of the Flash memory device erase blocks by re-mapping and distributing heavily rewritten user data sectors in a process called load leveling so that no one erase block gets overused too quickly and reduce the expected lifespan of the Flash memory device. The EBM data structures, however, are some of the most heavily rewritten non-volatile floating gate memory cells in the device and thus, while helping to reduce write fatigue in the Flash memory device, are some of the data structures most susceptible to the process of fatigue. The Flash memory device of the invention combines the EBM data in a user data erase block by placing it in an EBM data field of the control data section of the erase block sectors. Therefore distributing the EBM data within the Flash memory erase block structure. This allows the Flash memory to update and / or erase the user data and the EBM data in a single operation, to reduce overhead and speed operation. The Flash memory also reduces the process of EBM data structure write fatigue by allowing the EBM data fields to be load leveled by rotating them with the erase blocks they describe.

In a co-generated power supply system for performing dispersed power supply to a load, a wind turbine generator, a solar cell and a fuel cell whose rated voltages are made equal to a rated voltage of a storage battery are used as DC power sources. These DC power sources, a commercial AC power source and the load are connected to each other via a bi-directional electronic transformer. Thus, the co-generated power supply system, in which the electric power of a natural energy system having many fluctuation factors is combined with stable electric power such as a load leveling battery or a fuel cell, allows the stable electric power to be supplied to the load via the electronic transformer commonly, thereby reducing the cost and enhancing the performance of the entire system.

A compact and lightweight electric generator for portable power applications employs a new engine design and integration approach for reducing engine, generator, and starter weight. A unique flywheel alternator / starter configuration that generates electrical power, rotates the engine for starting, provides inertia for smooth engine operation, pressurized air for cooling, and inertia for the alternator. An engine cowling provides rotating component protection, a fan shroud mechanism, cooling air ducts, and a cooling mechanism for handling large quantities of heat produced by rectified power conversion. An electrical hook up that allows the generator to provide transient surge capacity for starting inductive loads, or improved load leveling and fuel efficiency.

An integrated battery by incorporating battery elements, supercapscitors elements, and miniaturized electronic controllers within a single housing is devised. The supercapacitors provide a load leveling for the battery elements at both charging and discharging. So long as the rated working voltage of supercapacitor is complied, the capacitor can be charged with charging currents of any magnitude. Then, the energy stored in the supercapacitors can be transferred from the capacitors to the batteries resulted in fast charging and energy conservation. With load leveling provided by the supercapacitors, the batteries are set to constantly discharge at 1C or lower rates and their residual energy near the end of discharge cycle can become useful as well. Therefore, the service run time, cycle life, and energy utilization of the batteries integrated are improved. In addition, the supercapacitor can be a built-in actuator to provide powers to in-cell air management systems for generating air draft inside metal-air batteries and fuel cells to increase their shelf life and power density.

The invention discloses a memory shared system and a device, as well as a method in a multi-core NUMA system. The system comprises a plurality of nodes; the operating system of each node comprises a memory shared device, the memory shared device comprises: a memory information collection and processing module, a memory application module, as well as a module establishing a distant end memory dynamic management structure and connected with a communication module. The method comprises the following steps: step S1, when the memory of a front node is deficient, the memory deficiency information is sent to other nodes, the node information of vacant memory in other nodes is collected, then the memory application information is sent to the nodes with vacant memory requesting the use of distant end memory; step S2, after receiving the memory application information, the nodes with vacant memory distributes the distant end memory with the current node, and let the current node dynamically manages and exclusively uses the distant end memory. The invention borrows the distant end vacant memory to accomplish the load leveling of the entire system.

A method for controlling an internal combustion engine having a plurality of cylinders using electronic valve actuation, including operating a first portion of the cylinders in a homogeneous charge compression ignition (HCCI) mode, operating a second portion of the cylinders in a non-HCCI mode, and adjusting the valve timing of the second portion of cylinders to dynamically load level the engine in response to a transient torque demand. A system for controlling a multiple cylinder internal combustion engine, including a first group of cylinders to operate in an HCCI mode, a second group of cylinders to operate in a non-HCCI mode, and an engine controller operably coupled to the first and second groups of cylinders, said controller to adjust the valve timing of the second group of cylinders to dynamically load level the engine in response to a transient torque demand.

The invention discloses a self-adaptive load balancing method based on host practical loads. The method is performed in a load balancing device. The load balancing device is in communication connection with a plurality of server hosts and stores prediction models for the number of sessions capable of being processed by servers under different performance indexes. The method comprises the steps of collecting current performance indexes of the servers and reconstructing the current performance indexes into index feature vectors; inputting the index feature vectors of the servers into the corresponding prediction models, thereby obtaining the number of the sessions capable of being processed by the servers under the current performance index; and setting load sharing weights for the servers according to the number of the sessions capable of being processed by the servers and carrying out corresponding flow distribution according to the load sharing weights of the servers. The invention also discloses a corresponding load balancing device and system.

A load leveling battery (122) comprising an electrolyte that includes a cerium zinc redox pair wherein preferred electrolytes are acid electrolytes, and most preferably comprise methane sulfonic acid. Contemplated load leveling batteries (122) have an open circuit voltage of at least 2.4 Volt per cell. Such batteries are useful at power grid substations (120) and commercial and industrial applications were large amounts of power are used. Preferred capacity is at least 100,000 kWh, more preferably 250,000 kWh.

The high temperature secondary battery based energy storage and power compensation system is so formed that electric power supply system, electric load, and electric energy storage system including a high temperature secondary battery and a power conversion system, are electrically connected with one another. When operating normally, electric power is supplied from the electric power supply system to the electric load, while the electric energy storage system operates to effect peak shaving running and load leveling running. A high speed switch is provided between the electric power supply system and the electric energy storage system, so that when a voltage sag or a service interruption occurs while the electric power is being supplied from the electric power supply system, the voltage sag is immediately detected and the circuit is immediately shut off, an electric power is immediately supplied from the electric energy storage system to the electric load so as to compensate for the voltage sag or the service interruption.

Provided are lithium sulfur battery cells that use water as an electrolyte solvent. In various embodiments the water solvent enhances one or more of the following cell attributes: energy density, power density and cycle life. Significant cost reduction can also be realized by using an aqueous electrolyte in combination with a sulfur cathode. For instance, in applications where cost per Watt-Hour (Wh) is paramount, such as grid storage and traction applications, the use of an aqueous electrolyte in combination with inexpensive sulfur as the cathode active material can be a key enabler for the utility and automotive industries, providing a cost effective and compact solution for load leveling, electric vehicles and renewable energy storage.

An energy storage module for use in an electric vehicle, such as a lift truck, is disclosed. The energy storage module includes a bank of super capacitors or ultra-capacitors which are connected between the battery and the load. In operation, the energy storage module charges the capacitors, and uses the charged capacitors to level the load on the battery, limiting spikes in current draw, and assuring a substantially smooth discharge profile, wherein the battery discharge is substantially steady state. The energy storage module further includes sensors for determining when the battery and load are connected.

Some embodiments are systems which calculate the amount of electric power that a peak mitigation system provides in real time and translate that information into a real-time estimate of a peak utility usage charge that appears on the utility bill of the customer. These systems may facilitate a determination of the monetary value of demand charges saved by peak mitigation and load leveling and a notification to a customer of the savings realized. Some systems described herein provide a method of billing a customer based on the electricity usage savings accumulated through demand charge reduction procedures. One embodiment monitors the mitigation of peak loads as they occur, detects and measures incremental changes in demand charge-producing peaks and updates a projection when incremental demand charge changes occur. The demand charge projection may be presented to the customer, aggregated with demand charge projections of other sites, and displayed to increase awareness.

The invention provides a master-slave type micro-grid power load prediction system based on load balancing. The master-slave type micro-grid power load prediction system comprises a main server; the main server is used for carrying out high-complexity mathematical calculation and large-scale data storage; information interaction can be carried out through an Ethernet switch and distributed secondary stations of the prediction system; the distributed secondary stations of the prediction system can transmit tasks which are required to be subjected to large-scale calculation to the main server; the main server performs calculation of the tasks; and each distributed secondary station of the prediction system is used for acquiring real-time data of fans in a micro-grid or a secondary micro-grid, real-time data of photovoltaic generated power and load data of a region. The power and the load of the micro-grid can be predicted precisely, a prediction result provides precise data support for an energy management system and a micro-grid controller, the prediction cost is reduced, and the using efficiency of a server of the prediction system and the using efficiency of a device of the prediction system are improved. Data-level load balancing can be realized on the system, and network element internal threading-level load balancing is realized in each network element.

A load threshold for a first carrier of a base station is set based on quality of service (QoS) classes for applications using the first carrier. Load balancing between the first carrier and one or more second carriers is performed based on the load threshold.

A hydraulic actuator for an active of semi-active vehicle suspension system has a cylinder with a piston therein. A piston rod is attached to the piston and extends out of the cylinder. First and second chambers are formed on opposites sides of the piston enabling the piston to be driven in a manner that counteracts vibrations in the vehicle, A third chamber is provided in the cylinder for connection to a load leveling apparatus. A novel structure reduces the overall length of the hydraulic actuator. A displacement sensor is incorporated into the hydraulic actuator to provide an electrical signal that indicated how far the piston rod extends from the cylinder.

A hydraulic suspension system for a vehicle includes a pair of cylinders on opposite sides of the vehicle. Each cylinder is divided by a piston into two chambers. When the vehicle is not making a significant turn, a switching valve connects the chambers in the same cylinder together and when a significant turn occurs, the switching valve cross connects the chambers of the two cylinders. That cross connection increases resistance of the suspension system to roll of the vehicle, as compared to when the cylinder chambers are not cross connected. A load leveling function also is included in the hydraulic suspension system.

A method is provided for scheduling an appointment by a service provider and for load leveling by the service provider. In the context of a vehicle collision repair service provider, the instant invention permits the service provider to balance the intake and outflow of new repair jobs to improve the work flowing through the service provider's facility. Through the instant invention, job drop-off slots and job delivery slots are allocated throughout a production period based upon production goals and capacities for the service provider. The program determines a first available drop-off slot for a specific job and presents the slot as a possible schedule option for scheduling the appointment. Load leveling between multiple facilities of a service provider is accomplished by allowing one facility to access the schedule database of an other facility and schedule appointments.

The invention relates to an Elasticsearch cluster expansion method supporting resource leveling. The method includes steps of S1, mounting Elasticsearch nodes according to server hardwire resource; S2, setting basic parameters of a dynamic cluster and recording some state values of the dynamic cluster, and performing data persistence on the parameters and the dynamic values in format of database or XML into a magnetic disk; S3, creating a thread, detecting file number and space occupancy regularly, and creating zones and adjusting storage strategy dynamically according to system parameters ifa threshold value is reached. According to the invention, data volume of corresponding proportions can be stored according to performance load leveling of a server in an Elasticsearch cluster and automatic creating of bases and zones are supported according a target data volume and the magnetic disk space threshold value, and the cluster is expanded dynamically. Therefore, problems of excessive data volume of one zone and local hot spots during new data insertion are avoided. At the same time, automatic recognition and load leveling on bases and zones of the Elasticsearch cluster can be realized after a new server is added into the cluster.