Tide And Wave Motors Patents (Class 290/42)
  • Patent number: 10830106
    Abstract: A method for synchronising a turbine with an AC network having a network frequency, having the following steps: A) accelerating the turbine up to a stated rotational speed, without taking into consideration a difference angle between the turbine and the AC network; B) detecting a difference angle between the turbine and the AC network; C) accelerating or decelerating the turbine in such a way that the differential speed follows a target trajectory, wherein the target trajectory is a trajectory that indicates a target rotational speed depending on the detected difference angle, such that a target angular position that is suitable for a synchronous supply is achieved between the turbine and AC network.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: November 10, 2020
    Assignee: Siemens Aktiengesellschaft
    Inventors: Gerta Zimmer, Matthias Heue
  • Patent number: 10823134
    Abstract: The present invention is directed to a nonlinear controller for nonlinear wave energy converters (WECs). As an example of the invention, a nonlinear dynamic model is developed for a geometrically right-circular cylinder WEC design for the heave-only motion, or a single degree-of-freedom (DOF). The linear stiffness term is replaced by a nonlinear cubic hardening spring term to demonstrate the performance of a nonlinear WEC as compared to an optimized linear WEC. By exploiting the nonlinear physics in the nonlinear controller, equivalent power and energy capture, as well as simplified operational performance is observed for the nonlinear cubic hardening spring controller when compared to an optimized linear controller.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: November 3, 2020
    Assignees: National Technology & Engineering Solutions of Sandia, LLC, Michigan Technological University
    Inventors: David G. Wilson, Giorgio Bacelli, Rush D. Robinett, III, Ossama Abdelkhalik
  • Patent number: 10822992
    Abstract: A hydrocarbon production system includes a well at a remote location. The well is configured to produce hydrocarbon production fluids comprising natural gas. The system also includes a turbo-generator coupled to the well and configured to receive the natural gas and produce electricity from the natural gas. In addition, the system includes a high performance computing (HPC) data center coupled to the turbo-generator and configured to be powered by the electricity from the turbo-generator.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: November 3, 2020
    Assignee: BP Corporation North America Inc.
    Inventor: Christopher Steele Spears
  • Patent number: 10807680
    Abstract: A mooring system for deploying flow kinetic power generation systems in a water flow and placing the power generation systems to a position across moving path of the water flow from an anchoring point, the mooring system comprises: a main tether; an anchor means attached to a first end of the main tether and fixed to the anchoring point; and a main sail means attached to a second end of the main tether and immersed in the water flow; wherein the power generation systems is attached to the second end of the main tether; and the relative to the main sail means creates a fluid dynamic lift force on the main sail means and pulls the power generation systems in a lateral direction with respect to the moving path of the water flow. The mooring system may also be applied to moor and deploy other payloads and devices transversely across a water flow.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: October 20, 2020
    Assignee: National Tsing Hua University
    Inventor: Che-Chih Tsao
  • Patent number: 10788010
    Abstract: A means for improving the motion stability of a floating, semi-submerged, or submerged body used in, multi-capture-mode wave energy converters (WECs) having two or more bodies, against wave-induced heave, surge, and pitching forces, while reducing the size, mass and cost of such bodies or bases, thus improving the relative motion and hence capture efficiency of such WECs over a broad spectrum of wave periods and wave heights. Stabilizing counter moments against wave-induced motion are substituted by strategic placement of drag plates or planes entraining seawater mass or water-filled cavities within, or attached to, the bases and/or at least one tensioned seabed-affixed cable. The base or reaction-body stabilizing means is disclosed in a two-body multi-capture-mode, deep-water, surface-deployed, wave-terminator-type WEC to concurrently increase wave energy capture efficiency and reduce the volume, mass, and capital cost of the WEC's stabilized reaction body or base.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: September 29, 2020
    Inventor: John W. Rohrer
  • Patent number: 10788009
    Abstract: The invention relates to a device for recovering wave energy, the device including a drum which is adapted to rotate around its centre axis and inside which an electric generator is adapted, arranged to be rotated by the rotating motion of said drum. In order for the device to recover energy better than prior art devices, the device includes at least one wing adapted on the outside of the drum, the wing being arranged to turn in such a way that it may be turned from a first position to a second position whereby, as the wing is in its first position, the motion of water in a first direction of the drum centre axis is arranged to rotate the drum in a first direction, and as the wing is in its second position, the motion of water in a second direction of the drum centre axis is also arranged to rotate the drum in said first direction, and the turning of the wing is arranged to take place under control of a pressure sensor.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: September 29, 2020
    Assignee: FINN ESCONE OY
    Inventor: Esko Raikamo
  • Patent number: 10677224
    Abstract: The invention relates to an improved, in particular simpler, lighter, mechanically more stable and operationally more reliable offshore wind power plant (100) that can float. By means of a cable (110) constructed as a combination of a power line that is held at least virtually without loading and a holding cable that absorbs all the mechanical forces that occur for holding the wind power plant on a single fixed-location anchoring point (111), said power plant can be connected to the anchoring point such that the power plant can move with six degrees of freedom. A coupling (112) is arranged at a single connecting point (118) between the cable and the wind power plant and, to make an electrical connection, is constructed with a sliding coupling and, for mechanical transmission of force, is constructed with a swivel coupling.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: June 9, 2020
    Inventor: Jens Cruse
  • Patent number: 10677227
    Abstract: Invention defines a method and apparatus for storing energy where a power source is used to reposition a mass in a gravitational field to a position of higher potential energy where the stored potential energy may be recovered with extremely low loss, where the force of gravity may be allowed to accelerates the mass, where the resulting kinetic energy is converted to shaft horsepower. Said shaft horsepower may be converted to pneumatic, electrical, or hydraulic power. A variation defines a method where a power source is used to submerge a buoyant object in a fluid, where the submerged object represents a potential energy, where the force of gravity displaces the submerged buoyant object, where the kinetic energy resulting from the displacement is converted to shaft horsepower. Said shaft horsepower may be similarly converted to pneumatic, electrical, or hydraulic power.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: June 9, 2020
    Inventors: James Francis Kellinger, Michael Thane MacKay
  • Patent number: 10634113
    Abstract: Disclosed is a novel device that converts some of the power in ocean waves into electrical power or other means of performing useful work. One or more tubes are arranged so that when the device is in position in a body of water, the tubes are oriented vertically with one end positioned proximate to and/or above the surface of the body of water on which the device floats, and with the other end positioned below the surface of that body of water. In some embodiments, through a differential restriction on the flow of air in and out of an upper end of the tube, the average height of the water inside the tube is different from the average height of the water outside the tube. In some embodiments, a hollow void inside a flotation structure of the embodiment is filled with water to contribute significant mass to the embodiment and increase the momentum associated with its vertical oscillations.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: April 28, 2020
    Inventors: Garth Alexander Sheldon-Coulson, Brian Lee Moffat, Daniel William Place
  • Patent number: 10615727
    Abstract: A power converter assembly for an electrical power system connected to a power grid includes a rotor-side converter configured for coupling to a generator rotor of a generator of the electrical power system, a line-side converter electrically coupled to rotor-side converter via a DC link, and a dynamic brake assembly electrically coupled to the DC link. The line-side converter is configured for coupling to the power grid. The dynamic brake assembly includes a plurality of switching devices connected in parallel and a plurality of inductors electrically coupled between the plurality of switching devices.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: April 7, 2020
    Assignee: General Electric Company
    Inventors: Robert Gregory Wagoner, Cornelius Edward Holliday, Benjamin Arthur Niemoeller, David Smith
  • Patent number: 10601352
    Abstract: The invention is an improved wave energy conversion system (1, 2) including a model predictive control method for an energy conversion machine (1) that maximizes the power output by accounting for the energy conversion efficiency and prediction of a wave (3).
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: March 24, 2020
    Assignee: IFP Energies nouvelles
    Inventors: Florian Saupe, Yann Creff
  • Patent number: 10570876
    Abstract: An energy harvesting pendulum device is provided to oscillate in a semi-circular path on an inclined plane with a low friction surface in response to wave motion of an ocean surface. An electrical production source is mounted to an underside of the plane to convert kinetic energy of a pendulum bob of the pendulum device into electrical energy. The pendulum device can be enclosed by an enclosure floating on the ocean surface with the pendulum moving bob on the inclined plane within the enclosure. The length of the pendulum and the angle of the inclined plane are determined so that the pendulum operates in a resonant state at the ocean motion frequency. The pendulum bob can include rollers for minimal friction when contacting the inclined plane.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: February 25, 2020
    Inventor: Anthony A Ruffa
  • Patent number: 10511211
    Abstract: A trip reduction tool for a wind turbine power system includes a capacitor assembly configured to provide multiple capacitance levels for the power system, including e.g. a first level of capacitance during a learning phase of the tool. The tool also includes one or more processors communicatively coupled to the capacitor assembly that is configured to monitor a plurality of electrical devices of the power system for trips during the learning phase. When a trip is detected, the processor(s) collects data and determines a location of the trip. When the location of the trip is located in an electrical device that corresponds to a weak link of the power system, the processor(s) determines a second level of capacitance for the power system based on the collected data. In addition, the processor(s) provides the second level of capacitance at the weak link of the power system to reduce future trips of the electrical device.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: December 17, 2019
    Assignee: General Electric Company
    Inventor: Joseph Lawrence Chacon
  • Patent number: 10480482
    Abstract: A wave energy collector placed in ocean water a given distance from a shoreline, the wave energy collector formed by at least one parallelogram structure with an even number of mechanical actuators are positioned within the parallelogram structure. Each mechanical actuator has a respective hose with a check valve to suck ocean water in and blow ocean water out under pressure for energy conversion.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: November 19, 2019
    Inventors: Gary Ross, Griffin Ross
  • Patent number: 10466155
    Abstract: An embodiment of a system with a minute measure of pulsatility in a flow of a fluid is described that comprises a first pump configured to flow the fluid to a junction at a first flow rate that comprises a measure of pulsatility; and a second pump configured to flow a portion of the fluid from the junction at a second flow rate that is less than the first flow rate to produce a flow of the fluid at a third flow rate from the junction with a minute measure of pulsatility.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: November 5, 2019
    Assignee: Life Technologies Corporation
    Inventors: Michael Ward, Jason Malkin
  • Patent number: 10458385
    Abstract: Assemblies, systems, and methods are disclosed for generating energy from natural and renewable forces and, more particularly, to energy generation using tidal action. A tidal energy conversion assembly includes a displacement vessel coupled via an anchor cable to a directional converter and an electrical power generator on land. The displacement vessel includes a horizontally rotatable drag panel extending into the water to capture drag forces caused by the flow of water. The flow of water against the drag panel causes the displacement vessel to move laterally and pull on the anchor cable thus exerting a force on the directional converter. The directional converter converts this force into rotational energy that may be harnessed by the electrical power generator to generate electricity for consumption. The horizontally rotatable drag panel may be rotated to adjust the amount of electrical energy produced.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: October 29, 2019
    Assignee: Big Moon Power, Inc.
    Inventors: Lynn Blodgett, Colin Bagley, Jeff Blodgett
  • Patent number: 10378507
    Abstract: An energy harvester including a stand supporting the energy harvester in a fluid flow, i.e. a stream or current; at least one bluff body extending from the stand and positioned substantially perpendicular to the fluid flow, wherein each bluff body moves relative to the stand at least in a direction perpendicular to the fluid flow, wherein sufficient flow causes oscillating movement of the bluff body; and an electrical generator coupled to the stand and coupled to at least one bluff body converting the oscillating movement to electrical power, wherein the rate of electrical power generation per movement of the bluff body (or harvesting) is varied throughout a range of amplitudes of the oscillation of the bluff body and wherein the harvesting rate of at least one amplitude of the body oscillation is greater than the harvesting rate of at least one lower amplitude of the body oscillation.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: August 13, 2019
    Assignee: RENERGE, INC.
    Inventors: Scott Kennedy, Lisa Weiland
  • Patent number: 10337489
    Abstract: System for power generation from a flow of fluid, comprising a fluid driven device connected to a tether wherein the tether is coupled with a base station to convert energy from the flow of fluid into transportable energy, wherein the fluid driven device comprises a frame provided with adjustable vanes, and wherein the vanes are adjustable for setting into a predefine position relative to the flow of fluid. The fluid driven device comprises a working mode and a retraction mode, wherein in the working mode the vanes are set in a first predetermined position to generate a lift force from the flow of fluid, and wherein in the retraction mode the vanes are set in a second predetermined position to provide a low drag level to the flow of fluid, and wherein the work performed during working mode is larger than the work supplied during retraction mode.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: July 2, 2019
    Assignee: SeaQurrent Holding B.V.
    Inventor: Youri Wentzel
  • Patent number: 10337488
    Abstract: A wave energy converter deep sea mounting system consists of a floatable platform, an enclosure, a wave energy converter mechanism, a generator, a float arm, and a float. The enclosure is mounted atop the floatable platform by an enclosure support axle, about which the enclosure can rotate. The wave energy converter mechanism and the electrical generator are mounted within the enclosure. The float arm is connected between the enclosure and a stationary float, and as the floatable platform rises and falls due to wave action, the enclosure is thus rotated. The wave energy converter mechanism has a stationary input pulley connected through at least one pulley system to a generator output pulley, multiplying input rotations from the float arm action to the electrical generator in order to generate electricity. As the enclosure rotates about the stationary input pulley, the remaining pulleys are forced to spin through rotation about the stationary input pulley.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: July 2, 2019
    Inventor: John J. Heim
  • Patent number: 10309367
    Abstract: A system for obtaining energy from surface waves is disclosed. The system can include an array of buoys. The array of buoys can include a framework having a plurality of vertical members. The array of buoys can also include a base buoy coupled to the framework to support the framework in a body of water and maintain the vertical members in a vertical orientation. The array of buoys can further include a plurality of movable buoys. Each of the plurality of movable buoys can be movably disposed about a different one of the vertical members and configured to move relative to the respective vertical members and the base buoy in response to a wave in the body of water. Additionally, the array of buoys can include an energy conversion device operable with each of the plurality of movable buoys to generate power from movement of the movable buoys relative to the vertical members.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: June 4, 2019
    Inventor: Mitchell Fait
  • Patent number: 10273931
    Abstract: A wave power station for conversion and storage of energy from waves in an ocean or a sea includes a wave energy absorbing unit including a first floating body connected to a vertically hanging counterweight via a drive line and a drive wheel, a power generating unit including at least one power generation unit for conversion of wave energy, connected to a drive shaft, and a power accumulating unit including at least one power accumulator for storage of generated wave power. The power generating unit and the power accumulating unit are arranged in a second floating body firmly anchored under the first floating body to the ocean bed or sea bed. The drive line is connected to the at least one power generation unit via the drive wheel, and a coupling and transmission unit arranged on the drive shaft for driving of the at least one power generation unit via the up and down movements of the drive line in time with the wave movements.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: April 30, 2019
    Inventor: Johnny Ohlsson
  • Patent number: 10267286
    Abstract: A wave power plant (1) comprising: a frame construction (2, 2?), a plurality of rocking rotors (2) arranged on the frame construction (2, 2?) on at least on rotor axis (4), a drive axis (30) connected to a generator and journaled in said frame construction (2, 2?); and at least one belt drive connection (40) arranged between the rotor axis (4) and the drive axis (30) for each rocking rotor (3).
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: April 23, 2019
    Assignee: Weptos A/S
    Inventor: Tommy Larsen
  • Patent number: 10253749
    Abstract: A device is provided that converts random movement of extrinsic oscillation from an ocean wave into purposeful movement, such as torque or other motion that can be used to generate electricity. This device may include but is not limited to two major components: 1) a collection unit and 2) a transmission unit. The collection unit represents the interactive part of the device that interfaces with an extrinsic force which provides the randomized kinetic motion that is translated by an actuating arm connected with the transmission unit into pivoting bidirectional movement along at least two directional axes, and may include a series of connected pivoting arms of different lengths. The transmission unit is the portion of the device that converts the pivoting directional movement of the actuating arm or arms into rotation of a drive shaft that is then converted into purposeful torque, and thus, electricity.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: April 9, 2019
    Inventor: Kevin M. Barrett
  • Patent number: 10233902
    Abstract: A method of using a bagged power generation system comprising windbags and waterbags integrated with drones and adapting drone technologies for harnessing wind and water power to produce electricity. An extremely scalable and environmentally friendly method, system, apparatus, equipment, techniques and ecosystem configured to produce renewable green energy with high productivity and efficiency.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: March 19, 2019
    Inventor: Yik Hei Sia
  • Patent number: 10190567
    Abstract: The invention discloses a heavy hammer type wave power generation method and device. According to the invention, under the action of wave power and gravity, a floating box enables driving sprockets and guiding sprockets to turn leftwards or rightwards along a chain, the driving sprockets turn leftwards or rightwards by means of a speed-increasing gear in a speed-increasing box and a transmission mechanism for converting bidirectional swinging to unidirectional rotation, a generator shaft always rotates in one direction to generate power. According to the invention, a wave energy collecting method is simple and easy, a large amount of wave energy can be collected, energy converting efficiency is high, the structure is simple, manufacturing costs are low, maintenance is avoided for a long time, service life is long, safety is good, a wave power generation station can be established by networking.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: January 29, 2019
    Assignee: Changchun University of Science and Technology
    Inventor: Chenghao Piao
  • Patent number: 10186941
    Abstract: A magnetic drive can be configured to transfer torque from a reciprocating magnet to a flywheel having magnets in a contactless manner. The drive can include a reciprocating magnetic leg assembly which guides a magnet through a reciprocating path. The reciprocating path can be elliptical. The leg assembly can be mounted near the outer surface of a flywheel so as to, way of magnetic attraction forces, transfer torque from the leg assembly to a flywheel.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: January 22, 2019
    Inventor: Fu-Hung Ho
  • Patent number: 10161379
    Abstract: This invention relates to a wave energy generator for a coastal protection system. The wave energy generator includes a base structure arranged in a body of water and configured to protect a portion of a coastline against incoming waves. The base structure has a foundation located on a floor of the body of water and a wall extending from the foundation to a point above a highest predicted height of the waves. At least one duct is associated with the base structure for receiving an oscillating water column from the body of water. The oscillating water column oscillates in response to wave action of the incoming waves and the duct forms part of an energy extraction system for capturing energy from the incoming waves.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: December 25, 2018
    Inventor: Ali Mohammad Baghaei Nanehkaran
  • Patent number: 10145354
    Abstract: An apparatus, system, and method are disclosed for power transfer system for a wave energy converter. The system includes a plurality of hydraulic cylinders including a first cluster of input cylinders and a second cluster of output cylinders. The input cylinders are coupled to an underwater structure and are configured to receive an input force from a relative motion between a buoy housing and the underwater structure. The output cylinders are configured to transfer an output force to an electric generator. The power transfer system further includes a hydraulic connection between the input cylinders and the output cylinders. The hydraulic connection is configurable to switch a portion of the hydraulic cylinders into and out of the hydraulic connection between the input cylinders and the output cylinders.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: December 4, 2018
    Assignee: OSCILLA POWER INC.
    Inventors: Timothy R Mundon, Jeff Campbell
  • Patent number: 10132051
    Abstract: The invention pertains to energy production by capturing simultaneously water potential (surface height differences due to waves) and kinetic (flow of water due to e.g. waves, tide or streams) energy. The plant can have tidal compensation (2, 3, 22, 23) to avoid energy flux streaming over the plant in high tide, and directional stabilizing arrangement to turn it automatically parallel to wave crests. Surfaces capturing energy from flow have optimized movements to follow speed of water in different depths. Also energy conservation to filter output ripple can be arranged with twin-phase fluid accumulators (51, 55).
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: November 20, 2018
    Assignee: SUBSEA-ENERGY OY
    Inventors: Timo Siltala, Aki Kauhanen
  • Patent number: 10107264
    Abstract: A medium voltage wind power generation system comprises a first boost device and a wind power generation device; the first boost device has a medium voltage side and a high voltage side, and the high voltage side of the first boost device is electrically connected to a grid; the wind power generation device comprises wind generators, rotor side converters and line side converters; the wind generators comprise stator windings and rotor windings; the stator windings are coupled to the medium voltage side of the first boost device; the rotor side converters are coupled to the rotor windings; one end of the line side converters are coupled to the rotor side converters, and the other end thereof is coupled to the medium voltage side of the first boost device via a second boost device.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: October 23, 2018
    Inventors: Changyong Wang, Fei Lu
  • Patent number: 10094361
    Abstract: An apparatus that can optimize wind power without compromising solar photovoltaic power collection by doing so and yet provide self-cleaning of the solar photovoltaic panels of the collector. The panels rotate in unison with rotation of the wind turbine airfoils and arranged in a planar region that is substantially transverse to a circumferential region in which the airfoils rotate beneath the solar photovoltaic collector.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: October 9, 2018
    Inventor: Jaime Miguel Bardia
  • Patent number: 10082126
    Abstract: The present invention relates to a wave energy conversion apparatus for converting wave energy into a power output, comprising a floatable compliant vessel having a plurality of linear generators having ends which are interconnected at a plurality of pivot joints to provide a compliant frame structure, the plurality of linear generators being configured to produce a power output by being respectively compressed and elongated changing the relative positions of the pivot joints, an outer flexible membrane supported by and enclosing the compliant frame structure thereby defining an inner space of the floatable compliant vessel, and a power circuit arranged within the inner space and operationally connected to the linear generators to receive the power output generated by the linear generators.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: September 25, 2018
    Assignee: Haaheim Invent
    Inventor: Øyvind Haaheim
  • Patent number: 10060408
    Abstract: A turbine comprises a shaft (20), a mass (10) eccentrically mounted for rotation about shaft (20), having its center of gravity at a distance from the shaft (20) and a motion base (15). Motion base (15) rigidly supports the shaft (20), and is configured for moving the shaft (20) in any direction of at least two degrees of movement freedom, except for heave. A floating vessel-turbine (120), encloses entirely the eccentrically rotating mass (10) and the motion base (15). The turbine converts ocean wave energy into useful energy, very efficiently.
    Type: Grant
    Filed: June 26, 2016
    Date of Patent: August 28, 2018
    Inventor: Vassilios Vamvas
  • Patent number: 10060406
    Abstract: The APPARATUSES, METHODS AND SYSTEMS FOR HARNESSING FLUID FLOW WITH FLEXIBLE MECHANICAL TRANSDUCERS include mechanisms that include flexible elements with strained deformations. In some implementations, oscillations of strained deformations in fins are excited by a moving fluid. By coupling the fin structure to an electrical generator and/or pump, energy from the moving fluid can be converted into electrical energy or used to perform useful mechanical work. In some implementations, the fin may be coupled to a motor or other actuator which causes the strained deformations to move, thereby imparting force onto the fluid to move or mix fluid or perform other useful work.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: August 28, 2018
    Assignee: Pliant Energy Systems LLC
    Inventors: Benjamin Pietro Filardo, Daniel S. Zimmerman, Michael I. Weaker
  • Patent number: 10063172
    Abstract: Systems and methods to provide for the controlled braking of a generator (e.g., a doubly-fed induction generator (DFIG)) in a wind power system are provided. In one example implementation, a method for braking a wind-driven doubly fed induction generator can include: receiving, by one or more control devices, a command to brake a wind-driven doubly fed induction generator; and generating, by the one or more control devices, a pulse width modulation scheme for the rotor side converter to provide a rotor side output to a rotor of the doubly-fed induction generator. The rotor side output includes a non-zero DC component and an AC component. The method includes controlling, by the one or more control devices, the rotor side converter in accordance with the pulse width modulation scheme. The non-zero DC component of the rotor side output can reduce a speed of rotation of the wind-driven doubly fed induction generator.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: August 28, 2018
    Assignee: General Electric Company
    Inventor: Parag Rameshchandra Dharmadhikari
  • Patent number: 10040514
    Abstract: A testing device for a model of a floating gate, the device including: a towing carriage including a platform and a moon pool; a square support mechanism including two upper transversal beams, two upper longitudinal beams, two I-shaped longitudinal beams, four lower beams, and straight plates disposed on two of the four lower beams; a dynamometric mechanism including a longitudinal tensiometer, a transversal tensiometer, and a signal transmitting terminal; a data acquisition mechanism including a computer and a signal receiving terminal; a casing mechanism including two stepped shafts and two rolling wheels; and a guide rod mechanism including an inner sleeve, an outer sleeve, and a connecting plate. One end of the connecting plate is connected to the lower end of the inner sleeve, and the other end thereof is connected to a deck of the floating gate.
    Type: Grant
    Filed: January 14, 2018
    Date of Patent: August 7, 2018
    Inventors: Yan Lin, Xiaoning Jiang, Yanyun Yu, Fei Pei, Guan Guan
  • Patent number: 9995268
    Abstract: A waterwheel generator providing a high efficiency rotational movement and floating on the surface of the water to generate power according to a water flow. A buoyant installation frame is filled with a predetermined amount of buoyant medium. A waterwheel rotational blade unit includes a plurality of rotational blades attached around a rotational shaft in a waterwheel receiving hole and immersed in a predetermined depth of water. The waterwheel receiving hole is formed at one side of the buoyant installation frame and exposed to water having a predetermined flowing speed. Height adjustment means is arranged at both ends of the rotational shaft to adjusts its height. Wire hooking means is configured around the outer periphery of the buoyant installation frame to prevent the buoyant installation frame from being carried away by the flow of water. A generator is provided at one side of the rotational shaft.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: June 12, 2018
    Inventors: Yu Il Kim, Seo Lim Kim
  • Patent number: 9982448
    Abstract: Disclosed embodiments include an articulated plow that displaces water within a pool to create water wave energy. The articulated plow may include blades that are vertically engaged and coplanar during a wave energy stroke, thereby forcing water in front of the plow to be displaced. During the wave energy stroke, the static water plane behind the plow may be maintained at a predetermined elevation. During a reset stroke, the blades may rotate through their respective centroidal axis simultaneously to a horizontal attitude, thereby gliding through the static water.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: May 29, 2018
    Inventor: Phillip James Fricano
  • Patent number: 9966699
    Abstract: Embodiments of the present invention provide a press tool and an electronic product detecting apparatus including the press tool. The press tool includes: a connector soft-contact member including: a first base plate; a floating plate mounted to the first base plate; and a buffer member mounted between the first base plate and the floating plate and configured such that when receiving a pressing force, the buffer member generates a repulsive force, so that the floating plate is floatable; and a press member connected with the connector soft-contact member such that they are openable and closable relative to each other. The press member includes a second base plate and a connector bearing piece which is mounted to the second base plate and which is positioned just opposite to the floating plate when the connector soft-contact member and the press member are closed.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: May 8, 2018
    Inventors: Shaoning Liu, Guofeng Hu, Guoqiang Liu, Weidong Lin, Xiaowen Xu, Yunxiang Jiao, Mingda Zhang, Yang Liu, Feng Wang, Weihua Cao, Liangliang Hu, Yantao Li, Dahai Liu, Jian Ma, Shijie Wang, Xiaobo Wang, Zhuangzhuang Wu, Zhenguo Xing, Yang Yu, Xing Zhang
  • Patent number: 9964097
    Abstract: A semi-submersible wind turbine platform is capable of floating on a body of water and supporting a wind turbine, and includes a keystone. At least three bottom beams extend radially outward of the keystone, and a center column extends perpendicularly from an upper surface of the keystone, a first axial end of the center column attached to the keystone; the center column configured to have a tower attached to a second axial end thereof. One of a plurality of outer columns extends perpendicularly from an upper surface of each bottom beam, wherein first axial ends of the outer columns are attached to a distal end of each bottom beam. One of a plurality of top beams extends between a second axial end of each outer column and a second axial end of the center column, wherein the top beams are configured substantially not to resist bending moment of a tower attached to the center column.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: May 8, 2018
    Assignee: University Of Maine System Board Of Trustees
    Inventors: Habib J. Dagher, Anthony M. Viselli
  • Patent number: 9945359
    Abstract: A wind turbine is disclosed having a generator and rectifier and structured to provide direct current power that in one form is medium voltage direct current (MVDC). The wind turbine includes a crowbar circuit arranged to protect from a condition such as an overvoltage. The crowbar can be activated based on a voltage measurement or rate of change of voltage. A resistor can be coupled to the crowbar to absorb excess power provided by the generator during the overvoltage condition. Individual wind turbines in a wind farm can each have individual crow bars that can be activated based on local measurement of a voltage condition. In some forms the crowbar can be coupled with a transformer, for example coupled with a tertiary winding of a three winding transformer.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: April 17, 2018
    Assignee: ABB Schweiz AG
    Inventors: Debrup Das, Jiuping Pan, Joseph A. Carr
  • Patent number: 9879648
    Abstract: The present invention relates to an energy transforming unit adapted to convert reciprocating forces into rotating axle movements on at least one force transmitting axle and/or into electrical power. The unit comprises at least one restriction device which is directly connected to the force and which is arranged to forward the incoming reciprocating forces into a movement over at least one conversion module. The energy transforming unit is characterized in that the at least one restriction device is delimiting one, by the energy transforming unit enclosed reciprocating volume which entirely or partly passes through the at least one conversion module. The reciprocating volume can comprise a non-compressible fluid arranged to forward the incoming forces into a reciprocating fluid movement over the at least one conversion module and/or the reciprocating volume can comprise at least one mechanical force transmitting arrangement adapted to the at least one conversion module.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: January 30, 2018
    Inventor: Stig Lundback
  • Patent number: 9866094
    Abstract: A fluid driven electric generator includes a shaft, an inner tubular member rotatably surrounding the shaft, an outer tubular member rotatably surrounding the inner tubular member, a plurality of first blade modules driven by a fluid flow to bring rotation of the inner tubular member only in a first rotational direction, and a plurality of second blade modules driven by a fluid flow to bring rotation of the outer tubular member only in an opposite second rotational direction. At least one power generating unit includes inner and outer rotors coupled with the inner and outer tubular members, respectively, so as to be rotated in opposite rotational directions to induce a current.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: January 9, 2018
    Inventor: Kuo-Chang Huang
  • Patent number: 9866194
    Abstract: An electric power transmission device characterized in that the electric power transmission device includes a power transmitting unit which wirelessly transmits an electric power and a power receiving unit which receives the electric power, the power transmitting unit and the power receiving unit include a coil for electric power transmission and an inclusion unit made of a dielectric material covering the coil for electric power transmission, at least one of the power transmitting unit and the power receiving unit includes an impedance adjustment unit which varies the impedance thereof, and the electric power is transmitted at a resonance frequency determined by an impedance of the power transmitting unit, an impedance of the power receiving unit, and an impedance of the conducting medium.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: January 9, 2018
    Assignee: NEC Corporation
    Inventors: Shuhei Yoshida, Masahiro Tanomura
  • Patent number: 9853529
    Abstract: An electrical generator, comprising: a stator having a coil and a lift magnet coupled by a lever to an induction magnet, the induction magnet moveable longitudinally within the coil, the lever configured to move the induction magnet a multiple of a distance that the lift magnet is moved; and, a rotor moveable with respect to the stator, the rotor having a rotor magnet, the rotor magnet and the lift magnet positioned with respective magnetic moments opposing; whereby movement of the rotor magnet toward the lift magnet causes the lift magnet to move away from the rotor magnet which in turn causes, by operation of the lever, the induction magnet to move within the coil to generate a first electromotive force therein.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: December 26, 2017
    Inventor: Ishwar Ram Singh
  • Patent number: 9844167
    Abstract: In one example, a shell includes walls that collectively define an interior space of the shell, the interior space sized and configured to receive heat generating equipment. An internal heat exchanger disposed within the interior space is arranged for thermal communication with heat generating equipment when heat generating equipment is located in the interior space. Additionally, an external heat exchanger is located outside of the shell and arranged for fluid communication with the internal heat exchanger. Finally, a prime mover is provided that is in fluid communication with the internal heat exchanger and the external heat exchanger, and the prime mover is operable to circulate a flow of coolant through the internal heat exchanger and the external heat exchanger.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: December 12, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Eric C. Peterson, Benjamin F. Cutler, Thomas Foley, Peter Johnson, Alexander Jacques Fleming, David Bazeley Tuckerman
  • Patent number: 9839160
    Abstract: A water-based computing system is described. In one embodiment, the system comprises a plurality of interconnected computer nodes each placed in a waterproof container floating in a body of water. Each computer node is configured to generate power for use thereof and for the other interconnected computer nodes.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: December 5, 2017
    Assignee: International Business Machines Corporation
    Inventor: Peter G. Finn
  • Patent number: 9819244
    Abstract: A hollow first housing with a rigid wall and a center of mass located on a portion of the rigid wall to which a weight is attached. When force is applied to tilt the apparatus then the center of mass is raised. When force is discharged, then a rocking motion of the hollow sphere device or housing will seek an equilibrium at the minimum gravitational potential energy. The rocking motion of the first housing activates a circular motion of a pendulum object. Motion of the pendulum object is passed to an electrical generator, which in turn produces electricity. The first housing may be a round circular hollow sphere, a circular cylinder, a cone, a frustrum, or may be configured in other shapes. A sail may be attached to an external surface of the first housing, at a location on the first housing furthest away from and opposite the weight.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: November 14, 2017
    Inventor: Valeriy Utkin
  • Patent number: 9793756
    Abstract: A wind turbine pitch drive system comprises an electric grid for supplying electrical power, a motor for driving a pitch actuator, an electronic converter for controlling the motor and a back-up energy storage unit for supplying electrical power. The electronic converter comprises a DC-link capacitor bank. The system furthermore comprises a switching device for selectively connecting the DC-capacitor bank link to the back-up energy storage unit, and a frequency generator for controlling the switching device. Also disclosed is a method for protecting a component of the electronic converter.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: October 17, 2017
    Assignee: ALSTOM Renewable Technologies
    Inventors: Pedro Palomares Rentero, Alejandro Rujas, Héctor Ortiz De Landazuri
  • Patent number: 9780624
    Abstract: An assembly for harnessing a pendulum motion from fluid wave energy to convert to power. The assembly converts a fluid wave energy into electricity through a pendulum mechanism. The pendulum mechanism makes use of a buoyant sphere that floats in a fluid and absorbs wave energy, such as oscillations, vibrations, and disturbances known in wave energy, while floating in the fluid. A hemispherical pendulum swings in relation to the wave energy. The hemispherical pendulum transmits the swinging motion to an electrical generator for conversion to electricity. The harnessing of wave energy and swinging of the hemispherical pendulum is controlled through various components that balance and stabilize the assembly. The sphere comprises components to help control the irregularities from wave energy on the hemispherical pendulum through a directional guidance member, a velocity regulation member, and a stabilization member. A transmission cable transmits the electricity to a control center on shore.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: October 3, 2017
    Inventor: Xiao Liang Li