221 |
Enhanced efficiency energy-scavenging interface, method for operating the energy-scavenging interface, and energy-scavenging system comprising the energy-scavenging interface |
US14036751 |
2013-09-25 |
US09461504B2 |
2016-10-04 |
Stefano Ramorini; Alessandro Gasparini; Alberto Cattani |
An energy-scavenging interface includes first and second switches connected in series between an input and reference, and third and fourth switches connected in series between the input and an output. A control circuit closes the first and second switches and opens the third switch for a first time interval to store charge in a storage element. A scaled copy of a peak value of the charging current is obtained. The control circuit then opens the first switch and closes the third and fourth switches to generate an output signal as long as the value in current of the output signal is higher than the value of said scaled copy of the peak value. |
222 |
Flywheel Energy System |
US15137355 |
2016-04-25 |
US20160241106A1 |
2016-08-18 |
Jeffrey Allan VELTRI |
An energy storage system comprises a housing and a flywheel having a drive shaft portion attached to a cylindrical ferromagnetic rotor portion. The drive shaft portion defines a substantially vertical axis about which the rotor portion is mounted for rotation. |
223 |
ENERGY STORAGE MODELING AND CONTROL |
US15132940 |
2016-04-19 |
US20160231725A1 |
2016-08-11 |
W. Craig CARTER; Marco FERRARA; Michael GOROFF; Maxwell MANN |
Systems and methods for optimal planning and real-time control of energy storage systems for multiple simultaneous applications are provided. Energy storage applications can be analyzed for relevant metrics such as profitability and impact on the functionality of the electric grid, subject to system-wide and energy storage hardware constraints. The optimal amount of storage capacity and the optimal operating strategy can then be derived for each application and be prioritized according to a dispatch stack, which can be statically or dynamically updated according to data forecasts. Embodiments can consist of both planning tools and real-time control algorithms. |
224 |
Power conversion apparatus and controlling method thereof |
US13729651 |
2012-12-28 |
US09348353B2 |
2016-05-24 |
Chih-Hung Hsiao; Cheng-Chieh Chan; Jo-Fang Wei; Yun-Chi Hung |
A power conversion apparatus and a controlling method thereof are disclosed. The power conversion apparatus is applied with a power generation apparatus, which outputs a first signal. The power conversion apparatus includes a conversion-sensing circuit, a control signal generating circuit and a switching circuit. The conversion-sensing circuit converts the first signal into a second signal, and senses at least a voltage waveform change of the second signal to generate a time interval. The control signal generating circuit is electrically connected with the conversion-sensing circuit and outputs a control signal according to the time interval. The switching circuit is electrically connected with the power generation apparatus and the control signal generating circuit, and has a plurality switching elements. The switching circuit receives the first signal and conducts one of the switching elements according to the control signal so as to convert the first signal and output an output signal. |
225 |
Flywheel energy system |
US13153216 |
2011-06-03 |
US09325217B2 |
2016-04-26 |
Jeffrey Allan Veltri |
An energy storage system comprises a housing and a flywheel having a drive shaft portion attached to a cylindrical ferromagnetic rotor portion. The drive shaft portion defines a substantially vertical axis about which the rotor portion is mounted for rotation. A magnetic bearing assembly comprised of an annular permanent magnet having no electromagnetic components is mounted on the housing in stationary centered relation about the vertical axis above the rotor portion so as to attract the rotor portion axially upwardly towards a lower face of permanent magnet, thereby supporting a significantly high portion of the weight of the flywheel. At least one low friction mechanical bearing assembly is mounted within the housing about the drive shaft portion to provide radial positioning of the rotor portion and to limit at least upward axial movement of the rotor portion in relation to the lower face. The annular permanent magnet overlies a portion of the end face of the rotor with the balance providing a return path for magnetic flux. |
226 |
Systems and methods for sustainable economic development through integrated full spectrum production of renewable energy |
US12857541 |
2010-08-16 |
US09231267B2 |
2016-01-05 |
Roy E. McAlister |
In one embodiment of the present invention, a method for providing an energy supply using a renewable energy source is provided comprising: providing a first source of renewable energy, wherein the first source of renewable energy is intermittent or does not provide a sufficient amount of energy; providing energy from the first source of renewable energy to an electrolyzer to produce an energy carrier through electrolysis; selectably reversing the electrolyzer for use as a fuel cell; and providing the energy carrier to the electrolyzer for the production of energy. |
227 |
ENERGY STORAGE MODULE WITH DC VOLTAGE INTERMEDIATE CIRCUIT |
US14430467 |
2013-09-10 |
US20150311751A1 |
2015-10-29 |
Ing.Rainer vor dem Esche; Christoph Schäfer; Ing. Christoph Treppmann |
An energy storage module is provided for reversibly storing electrical energy in the form of mechanical rotation energy. The energy storage module comprises a plurality of flywheel storage units, at least one control system and at least one module control unit, wherein the flywheel storage units are connected electrically in parallel by means of a common DC voltage intermediate circuit, and the control system or systems is/are connected to the common DC voltage intermediate circuit by way of the respective output side and to at least one external voltage grid by way of the respective input side, wherein the module control unit is provided for transmitting suitable prespecified torques to the flywheel storage units for emitting or absorbing energy to/from the DC voltage intermediate circuit, and at least one of the control systems is designed to control the DC voltage in the DC voltage intermediate circuit. |
228 |
DEVICE FOR OPTIMIZING ELECTRICAL ENERGY |
US14372780 |
2012-11-14 |
US20150305180A1 |
2015-10-22 |
Eun Guk KIM |
The invention includes; a sealed housing made of a plastic or metal material; a conductive plate made of a copper material, positioned in the center of the housing, and respectively connected to power lines so as to accumulate magnetic energy generated in an internal polymer-clay nanocomposite; a base insulation plate having insulation characteristics so as to fix the conductive plate; electric wires which are power lines for transmitting the magnetic energy stored on the conductive plate to the outside; the polymer-clay nano composite filled in the bottom portion of the housing such that the conductive plate is submerged therein; an upper ceramic layer coated on the inner wall of the housing so as to promote the magnetic interaction of a ceramic compound in the upper space portion of the polymer-clay nano composite. |
229 |
APPARATUS FOR STORING AND RELEASING ELECTRICAL ENERGY USING A FLYWHEEL AND A PLURALITY OF ELECTROCHEMICAL ACCUMULATORS |
US14427643 |
2013-09-13 |
US20150249352A1 |
2015-09-03 |
Maxime Dubois; Philippe Beauchamp; Rami Jarjour |
An apparatus for transferring energy from cell to cell of a battery, wherein each cell is connected to its individual electrical motor/alternator through an electronic module, and wherein each motor/alternator is mechanically connected to a common flywheel. The electrical motor/alternator preferably is an electrical motor that provides rotational work and generates power when being driven by an external source of rotational kinetic energy or by an external source of rotational power. The common flywheel stores rotational kinetic energy. Cells of the battery provide various torque on the flywheel or on the shaft driving the flywheel. Cells with higher than average output current will provide higher than average torque, thus providing higher than average kinetic energy input to the flywheel, while cells with lower than average output current will provide lower than average torque, or will provide negative torque, the motor/alternator acting then as an alternator recharging the cell. |
230 |
Graphene-in-structure electrical energy storage |
US14215025 |
2014-03-16 |
US20150130395A1 |
2015-05-14 |
Kreg Rice |
The problem of enabling a physical system to store and access a large amount of electrical energy while keeping the weight of the system as low as possible is solved by including graphene in the structure of the system. Supercapacitive graphene-in-structure electrical energy storage is applicable to a wide variety of electrical applications, including but not limited to electronics devices, power tools, vehicles, airplanes and buildings. |
231 |
Renewable energy storage system |
US13991230 |
2010-12-03 |
US09028781B2 |
2015-05-12 |
Hiroto Naito; Masatoshi Sugimasa; Takao Ishikawa |
A renewable energy storage system that stores renewable energy, includes: an electrical power generator that converts renewable energy into electrical power; an electrical storage device that stores the electrical power; a hydrogen production device that produces hydrogen using the electrical power from the electrical power generator and/or the electrical power stored in the electrical storage device; a hydrogenation device that adds the hydrogen produced by the hydrogen production device to the unsaturated hydrocarbon; a saturated hydrocarbon storage device that stores the saturated hydrocarbon produced by the addition of the hydrogen to the unsaturated hydrocarbon; an unsaturated hydrocarbon storage device that stores the unsaturated hydrocarbon; and an unsaturated hydrocarbon supply controller that controls the supply of unsaturated hydrocarbon stored in the unsaturated hydrocarbon storage device to the hydrogenation device. |
232 |
METHOD FOR OPERATING A COMBINED CYCLE POWER PLANT, AND COMBINED CYCLE POWER PLANT |
US14381475 |
2013-03-01 |
US20150105923A1 |
2015-04-16 |
Alfred Beekmann |
The invention relates to a method for operating a power-to-gas arrangement that is to say an arrangement which generates a gas, for example hydrogen and/or methane and/or the like, from electrical energy, wherein the power-to-gas unit for generating the gas draws electrical energy from an electrical grid, to which the power-to-gas unit is connected, wherein the grid has a predetermined setpoint frequency or a setpoint frequency range, wherein the power-to-gas unit reduces the consumption of electrical power by a predetermined value or consumes no electrical power when the grid frequency of the electrical grid is below the desired setpoint frequency of the grid by a predetermined frequency value and/or when the grid frequency drops with a frequency gradient, specifically with a change over time (Δf/Δt), of which the magnitude exceeds a predetermined magnitude of change. |
233 |
Method and System for Regulating Power of an Electricity Grid System |
US14395048 |
2013-04-16 |
US20150069843A1 |
2015-03-12 |
Jeffrey Allan Veltri |
A power regulation system for an electrical grid has a store of electrical energy connected through a first switch to a source of electrical energy. The response time of the store is faster than that of the source. A second switch is connected to the store at one side with the opposite side for connection to the grid. A first controller monitors energy stored in the store and energy available from source and selectively controls the first switch to close to transfer energy from the source to the store. A second controller monitors energy stored in said store and, on receiving an indication that additional energy is needed in the grid, if the energy stored in the store exceeds a supply threshold, controls the second switch to close to transfer energy from the store to the grid. |
234 |
DEVICE AND METHOD FOR GREEN STORAGE OF RECOVERABLE ELECTRIC ENERGY WITH HIGH OVERALL EFFICIENCY |
US14374981 |
2013-02-07 |
US20150048622A1 |
2015-02-19 |
Robert Schegerin |
A reliable, eco-friendly, and reactive device for storing large amounts of recoverable energy with high overall energy efficiency enables the electrical energy on a grid to be collected when there is an abundant amount of available electrical energy on the grid, and redistributes the electrical energy to the grid when the electrical energy is running out. The device mainly includes a compact, dense ballast, the ballast having a matching hydrodynamic and aerodynamic shape, and a flow cavity suitable for holding energy corresponding to the maximum energy of the ballast in the cavity, the ballast being capable of moving along the main axis of flow in the cavity, the device further including an energy collection and recovery element and a control element. A braking coefficient and a safety factor are defined and adjusted on the basis of the nature of the movement of the ballast in the flow cavity. |
235 |
ENERGY STORAGE AND RECOVERY SYSTEM |
US14361848 |
2013-02-04 |
US20140331670A1 |
2014-11-13 |
Kasra Zarisfi |
An energy storage system includes at least one body that is arranged to move along a bore that is excavated underground. The energy storage system includes a seal assembly within the bore. The seal assembly includes a support member and a seal element. The support member is arranged to support the body for movement in two directions within the bore and the seal element is adapted to isolate two regions within the bore from each other. The system also includes a fluid loading system wherein a first fluid and a second fluid can be separately fed to the bore. The first fluid is arranged in use to apply pressure to a first face of the seal element to charge the energy storage system. The second fluid is of heavier density than the first fluid and is arranged to apply pressure to a second face of the seal element. The fluid loading system can control levels of the second fluid within the bore such that when the seal assembly is moved to charge or discharge the system, the pressure difference on the seal element is reduced, thus enabling a more moderate seal element to be used, which minimises friction losses between the seal and a wall of the bore. |
236 |
Method and apparatus for storing energy |
US13889676 |
2013-05-08 |
US08829697B2 |
2014-09-09 |
Alistair K. Chan; Geoffrey F. Deane; Aaron Fyke; William Gross; Roderick A. Hyde; Edward K. Y. Jung; Jordin T. Kare; Nathan P. Myhrvold; Clarence T. Tegreene; Lowell L. Wood, Jr. |
An energy storage apparatus for storing energy transmitted by a power transmission line includes an elastically deformable component and an actuator-generator. The actuator-generator is coupled to the elastically deformable component such that electrical actuation of the actuator-generator generates tension in the elastically deformable component. The actuator-generator is further coupled to the elastically deformable component such that mechanical actuation of the actuator-generator via a release of tension in the elastically deformable component causes a generation of electrical energy by the actuator-generator. |
237 |
Method and system for regulating power of an electricity grid system |
US13863727 |
2013-04-16 |
US08803363B2 |
2014-08-12 |
Jeffrey Allan Veltri |
A power regulation system for an electrical grid has a store of electrical energy connected through a first switch to a source of electrical energy. The response time of the store is faster than that of the source. A second switch is connected to the store at one side with the opposite side for connection to the grid. A first controller monitors energy stored in the store and energy available from said source and selectively controls the first switch to close to transfer energy from the source to the store. A second controller monitors energy stored in said store and, on receiving an indication that additional energy is needed in the grid, if the energy stored in the store exceeds a supply threshold, controls the second switch to close to transfer energy from the store to the grid. |
238 |
ELECTRICAL POWER MULTIPLICATION |
US14132456 |
2013-12-18 |
US20140103901A1 |
2014-04-17 |
James F. Corum |
A power multiplier and method are provided. The power multiplier includes a power multiplying network that is a multiply-connected, velocity inhibiting circuit constructed from a number of lumped-elements. The power multiplier also includes a launching network, and a directional coupler that couples the launching network to the power multiplying network. The power multiplier provides for power multiplication at nominal power generation frequencies such as 50 Hertz, 60 Hertz, and other power frequencies, in a compact circuit. |
239 |
Method and apparatus for storing energy |
US13889658 |
2013-05-08 |
US08686578B2 |
2014-04-01 |
Alistar K. Chan; Geoffrey F. Deane; Aaron Fyke; William Gross; Roderick A. Hyde; Edward K. Y. Jung; Jordin T. Kare; Nathan B. Myhrvold; Clarence T. Tegreene; Lowell L. Wood, Jr. |
An energy storage apparatus for storing energy transmitted by a power transmission line includes an elastically deformable component and an actuator-generator. The actuator-generator is coupled to the elastically deformable component such that electrical actuation of the actuator-generator generates tension in the elastically deformable component. The actuator-generator is further coupled to the elastically deformable component such that mechanical actuation of the actuator-generator via a release of tension in the elastically deformable component causes a generation of electrical energy by the actuator-generator. |
240 |
SYSTEMS AND METHODS FOR MOBILE POWER CONDITIONING PLATFORM |
US13552404 |
2012-07-18 |
US20140021779A1 |
2014-01-23 |
Ralph TEICHMANN |
Systems and methods for a mobile power conditioning platform are disclosed. According to one embodiment of the invention, a mobile power conditioning platform is positioned proximate to a power grid, coupled to the power grid via an offboard power coupling, coupled to an onboard electrical system of a vehicle via a vehicle power coupling, and transfers electric power between the power grid and the onboard electrical system. One or more onboard generators of the vehicle may modify operation at least partly in response to the transfer of electric power. |