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810results about "Emission reduction for energy storage" patented technology
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DC power-generation system and integral control apparatus therefor
InactiveUS20070107767A1Shorten assembly timeMinimal numberPhotovoltaic monitoringPV power plantsSingle processComputer module
A DC power-generation array system (30) is made up of an array (32) of power-generation cells (36) arranged as N strings (38) of M cells (36) each. The system (30) incorporates an integral control apparatus (34) having N string units (52) and a single process unit (54). Each string unit (52) is coupled to one of the strings (38), and is made up of monitor module (72) to measure a string current (IS(X)) through that string (38), and a switching module (74) to switch that string (38) into and out of the array (32). The process unit (54) is made up of a processor (90) to evaluate the string currents (IS(X), and a data I / O module (98) to provide a remote monitoring and control of the system (30). The system (30) also has an interface unit (92) to provide local monitoring and control of the system (30). The processor (90) causes the switching modules (74) to couple or decouple strings (38) from array (32) under automatic, remote, and / or local control.
Owner:ARIZONA PUBLIC SERVICE
Systems and Methods for Energy Storage and Recovery Using Rapid Isothermal Gas Expansion and Compression
InactiveUS20100089063A1Increase energy densityHigh outputElectrical storage systemInternal combustion piston enginesProduct gasEngineering
The invention relates to systems and methods for rapidly and isothermally expanding and compressing gas in energy storage and recovery systems that use open-air hydraulic-pneumatic cylinder assemblies, such as an accumulator and an intensifier in communication with a high-pressure gas storage reservoir on a gas-side of the circuits and a combination fluid motor / pump, coupled to a combination electric generator / motor on the fluid side of the circuits. The systems use heat transfer subsystems in communication with at least one of the cylinder assemblies or reservoir to thermally condition the gas being expanded or compressed.
Owner:SUSTAINX
Dispatchable renewable energy generation, control and storage facility
The present invention includes a system and method for generating, controlling and storing dispatchable renewable energy. The system may include one or more wind power generation facilities and one or more solar power generation facilities to generate power that can be stored by one or more storage facilities. The power can be supplied to a power grid at a level determined by actual or predicted weather conditions, based on variable power demands. The power generated by the renewable energy sources may be combined with power generated by conventional power generation facilities to provide power in a dispatchable manner.
Owner:INVENTUS HLDG
Methods and apparatus for advanced wind turbine design
ActiveUS20070024058A1Eliminate needReduced pressure levelWind motor controlEngine fuctionsHigh energyHydraulic pump
A wind turbine system includes a variable blade assembly including adjustable sails and wing shaped masts expanding the wind velocity capture envelope. The blade assembly turns a hydraulic pump, which pressurizes fluid and stores the pressurized fluid in a chamber in the support tower. Pressurized fluid is directed via an electronically controllable proportioning valve to a hydraulic motor which is coupled to an electric generator. A computer control module operates the proportioning valve regulating pressure to the hydraulic motor, maintaining generator rotational speed, and providing consistent output frequency to the power grid. Stored energy in the high pressure tank is used to continue generator operation after the winds cease, allowing early warning notification to the power management system of impending power loss. Residual pressure maintained in the high pressure tank allows restart operations via hydraulic pressure rather than power grid energy drain. On site high energy capacitors store additional energy.
Owner:MCCLINTIC FRANK
Energy storage system
ActiveUS20110298288A1Reduce the numberSmall sizeDc network circuit arrangementsBatteries circuit arrangementsElectrical batteryElectric power system
An energy storage system includes a converter coupled between an inverter and both a power generator and a battery, thereby reducing the number of devices for circuit implementation and the size of a printed circuit board (PCB). The energy storage system is coupled to an electric power system that generates a system power, and the energy storage system includes a battery for generating a battery power and a converter coupleable to a power generator for generating an electric power and the battery in parallel, wherein the converter is configured to boost or drop a voltage of at least one of the electric power, the battery power, or the system power.
Owner:HANWHA SOLUTIONS CORP
System and method for storing energy
ActiveUS20090193808A1Increase gravitational potential energyIncrease rangeEngine fuctionsWind motor assemblyElectricityEngineering
A system includes at least one body, a link for suspending the body for movement with gravity from a first elevation position to a second elevation position, and an electrical energy generator coupled with the body through the link to drive the generator to generate electricity upon movement of the body with gravity from the first to the second elevation position. The at least one body has a mass of at least approximately 100 tonnes; the first and the second elevation positions define a distance therebetween of at least approximately 200 meters; and / or the system further includes an operator configured to operate the link to controllably move the at least one body against gravity from the second to the first elevation position to increase a gravitational potential energy of the at least one body, and to maintain the gravitational potential energy of the at least one body.
Owner:LAUNCHPOINT TECH
Wind powered hydroelectric power plant and method of operation thereof
A hydroelectric power plant uses a plurality of windmills connected to compressed air generators to produce pressurized air. Pressurized air is used to drive water through a turbine to produce electrical power. The water is recycled and the power plant includes reserve pressurized air tanks to allow the plant to continue to operate when the wind levels are not sufficient to produce high pressure air. The power plant is designed to be operated on a continuous basis based on wind power. When the wind subsides and the reserve capacity has been exhausted, electricity can be drawn from the local utility supplier. When excess power is generated by the power plant, electricity from the power plant can be added to the grid of the local electricity supplier.
Owner:NEW WORLD GENERATION
Universal power supply for different small electrical devices
InactiveUS6538341B1Easy to useReduce power consumptionBatteries circuit arrangementsCurrent/voltage measurementConvertersElectrical battery
The increasing number of mobile battery-powered small appliances with different feed voltages and connecting devices is calling for a universal and compact energy supply apparatus which provides for an uncomplicated and at the same time cost-efficient adjustability to as many small appliances as possible. To this end, the present application proposes a universal power supply unit consisting of an energy station with an integrated voltage converter in combination with various appliance-specific adapter cables with a group of electronic components. This generates an individual programming signal in the adapter cable which when coupling the adapter cable to the energy station causes a corresponding setting of the required output values. This leads to a simple matching of the unit with various small appliances and provides for a large field of applications. In particular, by feeding solar energy the power supply unit may be rendered autarchic in terms of energy.
Owner:SOLARC INNOVATIVE SOLARPROD
Methods and apparatus for advanced wind turbine design
ActiveUS7183664B2Eliminate needReduce pressureWind motor controlEngine fuctionsHigh energyHydraulic pump
A wind turbine system includes a variable blade assembly including adjustable sails and wing shaped masts expanding the wind velocity capture envelope. The blade assembly turns a hydraulic pump, which pressurizes fluid and stores the pressurized fluid in a chamber in the support tower. Pressurized fluid is directed via an electronically controllable proportioning valve to a hydraulic motor which is coupled to an electric generator. A computer control module operates the proportioning valve regulating pressure to the hydraulic motor, maintaining generator rotational speed, and providing consistent output frequency to the power grid. Stored energy in the high pressure tank is used to continue generator operation after the winds cease, allowing early warning notification to the power management system of impending power loss. Residual pressure maintained in the high pressure tank allows restart operations via hydraulic pressure rather than power grid energy drain. On site high energy capacitors store additional energy.
Owner:MCCLINTIC FRANK
Energy storage system and method of controlling the same
InactiveUS20110140520A1Batteries circuit arrangementsSingle network parallel feeding arrangementsElectrical FailureElectrical battery
A grid-connected energy storage system and a method of controlling the energy storage system. In the energy storage system, a normal operation of the energy storage system and the UPS function due to electrical failure may be stably performed even if electrical failure occurs. The energy storage system includes: a maximum power point tracking (MPPT) converter outputting converted power to a first node; a battery storing power; a bi-directional inverter converting power and outputting the converted power to the load, the grid or the first node; a bi-directional converter converting and storing power in the battery and outputting the power stored in the battery to the first node; and an integrated controller controlling the MPPT converter, the bi-directional inverter and the bi-directional converter.
Owner:SAMSUNG SDI CO LTD
Apparatus for Storing Power and Method of Controlling the Same
ActiveUS20110140667A1Batteries circuit arrangementsConversion with intermediate conversion to dcManagement unitPower grid
Provided are a power storage apparatus and a method of controlling the power storage apparatus. The power storage apparatus stores power supplied from a power generation system or a power grid. The power storage apparatus supplies stored power to a load during an electric failure, and supplies stored power to the power grid. The power storage apparatus includes at least one battery cell, a battery management unit coupled to the battery cell, a bi-directional converter coupled to the battery management unit, a bi-directional inverter coupled between the bi-directional converter and the power grid, and a central controller controlling the operations of the bi-directional converter, the bi-directional inverter, and the battery management unit. An uninterruptible power supply (UPS) function may be performed to stabilize the power storage system including the power storage apparatus.
Owner:HANWHA SOLUTIONS CORP
Wind power generation system, arrangement of permanent magnets, and electrical power-mechanical force converter
InactiveUS7417334B2Reduce weightSmooth rotationWind motor supports/mountsMachines/enginesImpellerRelative motion
A wind power generation system 10 comprising a frame, an impeller 12 rotatably supported by the frame, plural permanent magnets 31 aligned at equal intervals from the rotation center, and coils 32 aligned annularly on the frame. The relative motion of the permanent magnets 31 and the coils 32 in close vicinity generates electric powers by the inverse action of a linear motor. The coils 32 are mounted on the ring provided on the frame, and the permanent magnets 31 are provided on the lower end of the longitudinal blades 26 of the impeller.
Owner:SHIRO KINPARA
Storing Thermal Energy and Generating Electricity
InactiveUS20080022683A1Avoid componentsAvoid doublingAuxillary drivesHeat storage plantsComing outThermal energy
Because the efficiency of the thermal energy storage technology is inherently restricted, its beneficial use is limited to very particular economic boundary conditions, i.e. a large difference between the value of electricity going into the unit and the value of electricity coming out of the unit. With the reduction in wind power equipment prices and the cost of fossil fuels and / or their combustion products this is occasionally the case for wind power. Wind is a free fuel and the value of wind power when there is too little load demand is essentially zero, and the value of wind power when there is demand is considerable indeed. Under these circumstances, a combination of electrothermal energy storage and combustion of (fossil) fuels as an auxiliary heat source provides for a cost efficient system for storing energy and an economical way of generating electricity.
Owner:ABB RES LTD
Method of coordinating and stabilizing the delivery of wind generated energy
InactiveUS7308361B2Smoothing and stabilizing delivery of powerStable deliveryGeneration forecast in ac networkWind motor controlConstant powerPower grid
The invention relates to a method of coordinating and stabilizing the delivery of wind generated power, such as to a power grid, so as to avoid sudden surges and spikes, despite wind speed fluctuations and oscillations. The method preferably uses a plurality of windmill stations, including a number of immediate use stations, energy storage stations, and hybrid stations, wherein energy can be used directly by the power grid, and stored for later use when demand is high or wind availability is low. The method contemplates forming an energy delivery schedule, to coordinate the use of direct energy and energy from storage, based on daily wind speed forecasts, which help to predict the resulting wind power availability levels for the upcoming day. The schedule preferably sets a reduced number of constant power output periods during the day, during which time energy delivery levels remain substantially constant, despite fluctuations and oscillations in wind speed and wind power availability levels.
Owner:ENIS BEN M +1
Power control interface between a wind farm and a power transmission system
ActiveUS6858953B2Isolates power fluctuationInhibit injectionConversion with intermediate conversion to dcEngine fuctionsElectric power transmissionEngineering
Owner:HAWAIIAN ELECTRIC
Wind power generation system, arrangement of permanent magnets, and electrical power-mechanical force converter
InactiveUS20070040385A1Improve power generation efficiencyGenerate efficientlyWind motor supports/mountsMachines/enginesImpellerEngineering
A wind power generation system 10 comprising a frame, an impeller 12 rotatably supported by the frame, plural permanent magnets 31 aligned at equal intervals from the rotation center, and coils 32 aligned annularly on the frame. The relative motion of the permanent magnets 31 and the coils 32 in close vicinity generates electric powers by the inverse action of a linear motor. The coils 32 are mounted on the ring provided on the frame, and the permanent magnets 31 are provided on the lower end of the longitudinal blades 26 of the impeller.
Owner:SHIRO KINPARA
Electric energy storage system comprising an inverter
ActiveUS20130285459A1Low costReduce complexityBatteries circuit arrangementsDc-dc conversionComputational physicsControl theory
The invention relates to an electric energy storage system, comprising an inverter (6), several associations (21, 22), of an electric energy storage unit (1, 2) in series with a bidirectional chopper (3, 4), connected in parallel to a same input of the inverter (6), on the side of their chopper (3, 4), characterized in that at least one bidirectional chopper (3, 4), associated with an electric energy storage unit (1, 2) that can be charged and discharged asymmetrically, is sized asymmetrically for the charge and discharge of said associated storage unit (1, 2).
Owner:SAFT GRP SA
Heat/electric power supply system having power storage unit
InactiveUS20050062289A1Low costSave spaceBatteries circuit arrangementsSteam useElectricityPeak value
A heat / electric supply system the entire efficiency of which is enhanced while reducing the capacity of facility. The heat / electric supply system is characterized in that electric power is supplied from a generator, a commercial power supply and a power storage unit in the time zone when power consumption by the power load is higher than a specified output C1 and commercial power is stored in a power storage unit in the night time zone can be utilized at the time of peak power demand, the backup power at the time of peak power demand can be reduced.
Owner:CHO TONG RAE +1
Systems and Methods for Energy Storage and Recovery Using Rapid Isothermal Gas Expansion and Compression
InactiveUS20100139277A1Increase energy densityHigh outputElectrical storage systemInternal combustion piston enginesProduct gasEngineering
Owner:SUSTAINX
Hybrid energy storage system, renewable energy system including the storage system, and method of using same
InactiveUS20100308765A1Power network operation systems integrationSequential battery dischargeRenewable energy systemEnergy storage
This disclosure generally relates to stabilizing energy provided by an energy source, and more particularly to systems and methods for using multiple types of energy storage devices to selectively capture and provide energy. An energy source provides energy, and the energy storage devices selectively capture energy provided by the energy source in excess of an immediate energy requirement of a load and selectively provide energy when the immediate energy requirement of the load exceeds the energy provided by the energy source.
Owner:EAGLE PICHER TECH LLC
Power control interface between a wind farm and a power transmission system
ActiveUS20040207207A1Inhibit injectionLow costEngine fuctionsMachines/enginesElectric power transmissionElectric power
A power control interface between an unstable power source such as a wind farm and a power transmission line employs an electrical energy storage, control system, and electronic compensation module which act together like an "electronic shock absorber" for storing excess power during periods of increased power generation and releasing stored energy during periods of decreased power generation due to wind fluctuations. The control system is provided with a "look ahead" capability for predicting power output (wind speed conditions) and maintaining energy storage or release over a "narrow-band" range despite short duration fluctuations. The control system uses data derived from monitoring the wind farm power output and the power transmission line, and employs system-modeling algorithms to predict narrow-band wind speed conditions. The power control interface can also use its energy storage capacity to provide voltage support at the point of injection into the power transmission system, as well as fault clearance capability for "riding out" transient fault conditions occurring on the power transmission line.
Owner:HAWAIIAN ELECTRIC
Wind-Energy Power Machine and Storage Energy Power Generating System and Wind-Driven Power Generating System
A wind-energy power machine and it's energy-storage generation system and wind-energy power generation system relate to a field of wind-energy power, generating technology and generating device. The wind-energy power machine is composed of a central rotor, a plurality sets of frames and at least a set of wind-pressure pushing mechanism provided within each set of frame. The central rotor vertically rotatablely mounted within a mounting frame in a special high-story frame structure with wind collecting wall is formed to a large scale power and generating system by means of combining with vertical or horizontal integrated system, or both systems in series and in parallel.
Owner:WANG YING +1
Power control device, power control method, and power supply system
ActiveUS20120223670A1Stable strengthReduce deteriorationBatteries circuit arrangementsElectrical testingVoltage referenceElectric power
The control device (105) includes: an acquisition unit (201) which acquires voltage information indicating a voltage applied to a capacitor provided between a power generation unit and a load via first and second power supply lines, and deterioration information indicating a state of deterioration of a storage battery connected to the power generation unit; a determination unit (202) which compares the acquired voltage information with a reference voltage so as to detect a fluctuation of the voltage, and determines power to be outputted so as to suppress the fluctuation; and an informing unit (203) which informs the storage battery of a current value corresponding to the power to be outputted, wherein the determination unit (202) detects a state of deterioration of the storage battery using the deterioration information, and determines power to be outputted in accordance with the state of deterioration.
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Energy management system, energy management apparatus, and energy management method
ActiveUS20110238232A1Reduce the impactIncrease photovoltaic power generation amountElectrical storage systemMechanical power/torque controlRadiation lossElectric power system
An energy management system includes an equipment data management unit which manages charging / discharging loss of a battery and heat radiation loss of an electric water heater, and causes a control unit to perform control to give priority based on the comparison to the energy storage facility more reducing loss and store energy. The energy management system includes a system operation calculation unit which predicts voltage distribution of the next day of a distribution system or demand-and-supply balance amount of the entire system by state monitoring data of a power system, calculates a demand amount increasing target value necessary for avoiding a photovoltaic power generation amount suppression on a consumer end by the voltage distribution of the next day of the distribution system or the demand-and-supply balance amount, and controls the energy storage facilities so as to satisfy the demand amount increasing target value on the consumer end.
Owner:HITACHI LTD
Method of transporting and storing wind generated energy using a pipeline
ActiveUS20070182160A1Low costAvailable energyGeneral water supply conservationWind energy with garvitational potential energyLow demandPneumatic tool
The invention relates to a method of storing and transporting wind generated power in the form of compressed air energy, via a pipeline, from a location where wind conditions are ideal, to a facility or community where energy is needed. The method preferably comprises using at least one wind turbine to drive a compressor to compress air into storage, wherein the size and length of the pipeline can be adapted to reduce the pressure losses that are experienced along the length of the pipeline. The pipeline can be located on railroad ties, or on the desert floor, or can be extended along paths where existing right of ways are provided. The facility or community using the energy can use energy in the form of electricity, or to drive pneumatic tools or equipment, or to generate chilled air as a by-product, which can be used for refrigeration, air conditioning or desalination. A utility or grid can be provided to generate compressed air energy when the wind is not blowing, wherein compressed air energy can be produced and stored during low demand periods, and used during high demand periods.
Owner:ENIS BEN M +1
Power management system
InactiveUS20120212183A1Solve large capacityCharging managementSingle network parallel feeding arrangementsCharge dischargeEngineering
Provided is a power management system capable of controlling charge and discharge of storage batteries according to power requirement of load even when handling electric power of large scale. A system controller receives load-related information data including the power requirement of load and storage battery-related information data including a state of a storage battery assembly including multiple storage batteries and creates an overall charge-discharge control instruction for the entire power management system based on the load-related information data and the storage battery-related information data. A hierarchical charge-discharge control apparatus receives the overall charge-discharge control instruction from the system controller and performs charge-discharge control of the multiple storage batteries, classified into hierarchical levels, on a hierarchical level basis.
Owner:SANYO ELECTRIC CO LTD
Off-grid grid-connected hybrid photovoltaic power generation control system and economical operation optimization method thereof
InactiveCN103795079AIncrease credibilityAchieve forecastBatteries circuit arrangementsSingle network parallel feeding arrangementsGrid-tie inverterEngineering
The invention relates to an off-grid grid-connected hybrid photovoltaic power generation control system and an economical operation optimization method of the off-grid grid-connected hybrid photovoltaic power generation control system. The control system is composed of a photovoltaic array, a grid-connected inverter, a storage battery pack, a bi-directional inverter, a load, a power meter, a public grid, a demand response control system and a switch set. The photovoltaic array is connected into an alternating-current side through the grid-connected inverter, and the storage battery pack is connected into the alternating-current side through the bi-directional inverter. The grid-connected inverter is connected with the bi-directional inverter through a switch, and the public grid and the load are connected through the switch set (S1-S4). The whole off-grid grid-connected hybrid photovoltaic power generation control system is uniformly managed and controlled by the demand response control system. Through the turn-on and turn-off combination of the switch set, the system supports eight different operation modes to achieve the optimization of economic benefits and peak shifting of the grid, and the service life of the system is prolonged through the method of limiting the discharging depth and charging and discharging power of storage batteries.
Owner:SHANDONG UNIV
Containerized continuous power system and method
InactiveUS20110215645A1Rapid deploymentData applicationBatteries circuit arrangementsPower network operation systems integrationElectric power systemData center
It is an object of this disclosure to provide an efficient continuous power system that may be deployed quickly and at low cost to a variety of destinations. The containerized nature of the presently disclosed system may allow these advantages to be attained. The disclosed system is particularly well suited for deployment in data center applications, but one of ordinary skill will recognize that it may be useful in a variety of situations.
Owner:ACTIVE POWER INC
Energy storage system and controlling method thereof
ActiveUS20120176088A1Extend battery lifeExtend your lifeBatteries circuit arrangementsEnergy industryElectrical batteryOperation mode
An energy storage system and a controlling method thereof are provided. Accordingly, an operation mode of the energy storage system is stably changed. The energy storage system includes: a battery; an inverter for receiving a first power from an external source and generating a second power; and a converter coupled between the battery and both the external source and the inverter. The converter is configured to enter an off mode between a charge mode for charging the battery and a discharge mode for discharging the battery.
Owner:HANWHA SOLUTIONS CORP
Energy storage device and method for decreasing rush current
ActiveUS20140002003A1Total current dropPrimary cell to battery groupingCharge equalisation circuitElectrical batteryPower grid
An energy storage device and method for decreasing a rush current to protect battery cells and battery management systems (BMSs) from a rush current by sequentially coupling battery packs to each other in parallel to a grid. To this end, the BMS measures voltages of at least three battery packs and then sequentially in parallel couples battery packs in order from a smallest to a largest voltage to thereby reduce the rush current.
Owner:SAMSUNG SDI CO LTD
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