Fluid-current Motors Patents (Class 290/43)
  • Patent number: 10935005
    Abstract: Systems and methods are disclosed for using electrical energy to store potential energy during a first period of electrical demand and, thereafter, to convert the stored potential energy into electrical energy that can be supplied to an electrical grid during a second period of electrical demand. During the first period of electrical demand, electrical energy is used to move one or more weight(s) from a first relative position of low potential energy to a second relative position of high potential energy. During time periods of high electrical demand, the system is used to move one or more individual weight(s) from the relative position of high potential energy to the relative position of low potential energy. As each individual weight moves from the position of high potential energy, the motion of the weight is used to cause a generator to generate electrical energy.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: March 2, 2021
    Inventor: Ayesha Bhargava
  • Patent number: 10924042
    Abstract: An apparatus including a pneumatic system; an energy harvesting unit configured to generate electrical energy from a compressed gas in the pneumatic system; a battery connected to the energy harvesting unit; a sensor disposed to detect a first parameter regarding operation of the energy harvesting unit; and a controller connected to the sensor and the energy harvesting unit. The sensor and the controller are powered by the energy harvesting unit. The controller is configured to control the energy harvesting unit and to process measurements for the first parameter detected by the sensor. The controller is further programmed with a learning system configured to diagnose an operational condition of the energy harvesting unit based on the measurements for the first parameter, and to issue a command to the controller based on the operational condition.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: February 16, 2021
    Assignee: The Boeing Company
    Inventors: James William Fonda, Raymond J. Slesinski
  • Patent number: 10907611
    Abstract: Aspects described herein include a method of generating a control schedule for a wind turbine. The control schedule specifies a maximum power level that varies over time. The method comprises determining a value indicative of a current remaining fatigue lifetime of the wind turbine or of one or more components. The method further comprises applying an optimization function to perform an optimization to determine an optimized control schedule. The optimization comprises varying a plurality of parameters of an initial control schedule to produce a varied control schedule, estimating a future fatigue lifetime to be consumed by the wind turbine or the one or more components over the duration of the varied control schedule, and constraining the optimization according to one or more input constraints.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: February 2, 2021
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Chris Spruce, Chakradhar Byreddy
  • Patent number: 10873274
    Abstract: The invention provides an energy generation system comprising a generator having charged mutually rotating plate elements, and comprising an integrated drive mechanism for precisely controlling a separation distance between the plates. The drive mechanism provides a separation which varies as a function of the speed of rotation, hence assimilating separation control within the natural operation of the device. Embodiments provide plates comprising self-generating bearings, both hydrodynamic gas and fluid bearings and centrifugal regulator solid bearings, the bearings providing a supporting force between the plates of a magnitude which increases as the rotational speed of the plates increases. Methods of energy generation are also provided.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: December 22, 2020
    Assignee: Koninklijke Philips N.V.
    Inventors: Steven Ernest Franklin, Lutz Christian Gerhardt, Willem Potze, Hans Kroes, Mark Thomas Johnson
  • Patent number: 10858087
    Abstract: A vertical-input outboard-motor angled-drive lower unit apparatus and method for improved operations in shallow, muddy, marshy water or water choked with vegetation or obstacles. Vertically applied single-direction rotational power from an outboard motor engine is transferred to operator-controlled forward and reverse rotational power applied at an acute angle to the horizontal water surface. The apparatus is cooled by an external flow of water without being taken into any port which might become blocked. A thrust redirection plate reflects otherwise wasted propeller thrust, especially when operating in reverse, for more efficient operation and reduced churning of the water surface. An angled skeg and the angled orientation of the output shaft and housing deflect obstructions.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: December 8, 2020
    Inventor: Brian Provost
  • Patent number: 10830202
    Abstract: The present invention relates to a flow controller configured to selectively act as a pump or as a flow regulator. The flow controller comprises: an inlet for a fluid; an outlet for the fluid; a pump assembly arranged between the inlet and the outlet and configured to pump the fluid through the flow controller from the inlet to the outlet; a hydro electrical generator assembly arranged between the inlet and the outlet, the hydro electrical generator assembly configured to allow the fluid flow through the flow controller from the inlet to the outlet and to generate electricity by transforming flow energy of the fluid flowing through the flow controller into electricity; and a mode controller configured to selectively set the flow controller in a pumping mode or in an electricity generating mode.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: November 10, 2020
    Assignee: E. ON SVERIGE AB
    Inventor: Per Rosén
  • Patent number: 10823136
    Abstract: The APPARATUSES, METHODS AND SYSTEMS FOR HARNESSING THE ENERGY OF FLUID FLOW TO GENERATE ELECTRICITY OR PUMP FLUID include a device which, when placed in fluid-flow, harnesses the kinetic energy of the flow to generate electricity or to perform useful mechanical work such as pumping. For example, the undulating mechanical action of traveling waves along flexible fins may be harnessed by summing the varying speeds and torques along the fins into a unified circulatory system for power take-off or fluid extraction. The device may include two fins, a chassis, and bellows/pistons/rotary vanes and the like which are connected via a circulatory system of tubes or conduits.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: November 3, 2020
    Assignee: Pliant Energy Systems LLC
    Inventor: Benjamin Pietro Filardo
  • Patent number: 10801471
    Abstract: Wind turbine, including a tower, a nacelle which is rotatable connected to the tower, a yaw motor for rotating the nacelle relatively to the tower, a yaw brake which is configured to fix the nacelle relatively to the tower and which is configured to be brought from an open position into a brake position and vice versa, wherein the yaw brake is pre-tensioned into the brake position, a switch which is electrically connected to the yaw motor and the yaw brake and which is configured to be brought from an open state into a closed state and vice versa, wherein, when the switch is brought from the closed state into the open state a power supply to the yaw brake and the yaw motor is interrupted and the yaw brake goes into the brake position by releasing at least partially the pre-tension.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: October 13, 2020
    Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/S
    Inventor: Leif Christian Rask
  • Patent number: 10788008
    Abstract: The present invention relates to a method for optimizing the adjustment of the gating of a hydraulic turbine (1), the turbine (1) is provided with a set of wicket gates (2), wicket gates (2) are moving with a single, conjoined movement between a closing position in which they press against one another and an opening position in which they are apart from one another, by a control ring (4) that is kinematically connected to each one of these wicket gates (2), this control ring (4) being moved in rotation by at least one actuator (3), this actuator (3) including a device (31) for adjusting the travel of its rod (30), the method includes at least the following steps, the turbine (1) is previously stopped and dry and the rod (30) of the actuator (3) is provided with at least one strain gauge: 1) calculating the theoretical force to be applied to the actuator (3) in order to obtain watertight closure of the wicket gates (2); 2) measuring, via the strain gauge, the force applied to the actuator (3), the latter being
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: September 29, 2020
    Assignee: Electricite de France
    Inventors: Olivier Mousseeff, Eric Hideux
  • Patent number: 10788013
    Abstract: An underwater power plant, a method and a system are for converting kinetic energy of flowing water into electricity. The power plant has at least one turbine house defining a duct for housing a turbine apparatus, and a connecting means for attaching the turbine apparatus in the duct. The connecting means has at least one member slidably connected to the turbine house for allowing sliding of the turbine apparatus out of, into or within the turbine house.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: September 29, 2020
    Assignee: Norwegian Tidal Solutions AS
    Inventor: Roar Kristensen
  • Patent number: 10782163
    Abstract: An autonomous, low-power turbine flow meter and an assembly of at least one flow meter and at least one signal receiving device configured to receive signals, preferably in a wireless manner, produced and transmitted by the flow meter. The invention further relates to a method for measuring at least one flow characteristic, in particular the flow rate, of a fluid flowing through a flow meter.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: September 22, 2020
    Assignee: KINETRON B.V.
    Inventors: Frans Vromans, Geert Maria Van Den Brekel, Joris Paul Lodewijk Jansen, Bernardus Johannes Meijer, Koen Jacob Weijand
  • Patent number: 10782351
    Abstract: Provided is a method of diagnosing at least one winding set of a stator of a generator during operation, the winding set having plural wires for plural phases, the method including: obtaining, for each of the plural wires of the winding set, an individual strength of an individual power output from the respective wire of the plural wires of the winding set; obtaining a sum strength of power; forming, for each considered wire of the plural wires of the winding set, an individual ratio between the individual strength of the considered wire and the sum strength; forming, for each considered wire of the plural wires of the winding set, a diagnostic value by subtracting from an individual ratio not corresponding to the considered wire a term depending on the individual ratio corresponding to the considered wire; diagnosing at least one wire based on comparing the diagnostic values.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: September 22, 2020
    Assignee: Siemens Gamesa Renewable Energy A/S
    Inventor: Nuno Miguel Amaral Freire
  • Patent number: 10782663
    Abstract: A water supply network includes node components and edge components, wherein the edge components transport water between the node components. The edge components is controllable in relation to its flow behavior for water. A method for controlling the water supply network includes the steps of determining a planning horizon, which includes a number of time slices; determining upper and lower limits for feeds and prospective withdrawals of water in the time slices; determining possible operating configurations of the at least one edge component; determining energy costs for an activation of the edge component in the time slices; determining permissible states of node components; determining current states (initial states) of edge or node components; and determining a control plan for the at least one edge component on the basis of the determined information in such a manner that a predetermined water balance is maintained in each time slice averaged over time.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: September 22, 2020
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Rafael Fink, Christoph Moll
  • Patent number: 10774618
    Abstract: A downhole power generator module having a body with one or more couplings that are configured to connect the body to a downhole tool string positioned downhole in a wellbore. An axial passageway is formed through the outer housing and couplings. The power generator module has a pressure-driven electric generator such as a triboelectric or piezoelectric generator positioned within the body. A port in the body enables communication of well fluids from the wellbore to the generator. Pressure changes in the well fluids are communicated to the pressure-driven electric generator, causing it to autonomously generate electric power downhole. The generated power is provided directly to other downhole tools without intervention from the surface.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: September 15, 2020
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Yuh Loh, Zhi Yong He, Lily Truong, Felipe Rivero, Zhiyue Xu
  • Patent number: 10767620
    Abstract: A water current power generating system includes a support structure located on a bed of a body of water. A power generating apparatus, such as a water current turbine device, is mounted on the support structure, by way of a mounting portion. The system also includes a measurement unit operable to determine operating information relating to operation of the system, and a controller operable to determine loading on the system from such operating information, and to adjust a controlled parameter of the system such that loading on the system falls below a predetermined threshold value.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: September 8, 2020
    Assignee: GE Energy (UK) Limited
    Inventors: Jonathan Rhymes, Gregory Pittam, Simon Harper, James Harrison
  • Patent number: 10745877
    Abstract: A water-surface wave-absorbing structure comprises an equipment cabin and an airbag cabin vertically mounted below the equipment cabin; a solar cell module and an energy storage device in the equipment cabin are mounted on an upper surface of the equipment cabin, a signal transceiver is mounted on top portions of the solar cell module and the energy storage device, a central air distributing device is mounted in the equipment cabin, two ends of the central air distributing device are respectively connected to an air compressor and an air storage tank through vent pipelines, and a central controller is arranged in the central air distributing device and sends control instructions to the central air distributing device and the air compressor; and the airbag cabin comprises a plurality of airbag units, each airbag unit is provided with a plurality of mutually independent air chambers.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: August 18, 2020
    Assignee: JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Jie Cui, Zichao Li, Chunyan Ji, Taoran Zhou, Jianting Guo
  • Patent number: 10727688
    Abstract: A power management system including a power converter circuit, a supercapacitor storage unit, and a load-sharing controller in communication with the power converter circuit and the supercapacitor storage unit; wherein, in response to executing the program instructions, the load-sharing controller is configured to receive data including the power demand from the external device, receive data including the raw power from the power converter circuit, receive data including a capacity from the supercapacitor storage unit, and direct power to the external device based on the received data.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: July 28, 2020
    Assignee: PedalCell, LLC
    Inventors: Vishaal Mali, Tarun Subramanian, Adam Hokin
  • Patent number: 10724497
    Abstract: Systems and methods for hydro-electric power generation are disclosed. The system includes a frame or structure positioned in a waterway or channel, with one or more hydro-transition units secured to corners of the frame. The hydro-transition units include a body of reinforced fabric for redirecting water flow towards the inlet of the frame, effectively increasing the current of the water and allowing for turbines within the frame to generate power at an increased rate. Anchors and bracket systems may secure the hydro-transition units to both the waterway and the frame, thereby allowing the body of reinforced fabric to withstanding force from water-flow within the waterway. The system includes various failsafe mechanisms for disengaging or detaching the hydro-transition units from the frame and/or anchor for reacting to high water flow or volumes (e.g., flooding).
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: July 28, 2020
    Assignee: EMRGY INC.
    Inventors: Emily A. Morris, Craig J. Cochran, Madeleine M. White, Kirk William Charles, Thorsten Stoesser
  • Patent number: 10690197
    Abstract: An outboard-motor automatic disengaging clutch system and method, providing an improved means of shifting between forward and reverse with an outboard boat motor, providing an ability to shift in circumstances where the propeller is not spinning freely, such as in weeds or mud, and providing improved shifting with less damage to gears in all circumstances. The outboard-motor automatic disengaging clutch can be built into an outboard motor, or can be later-installed as a retrofit. The outboard-motor automatic disengaging clutch provides an electric clutch controlled by a sensor switch activated and deactivated by the mechanical linkages of the outboard motor's shifting system.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: June 23, 2020
    Inventor: Brian Provost
  • Patent number: 10683840
    Abstract: An energy conversion device includes a plurality of cross flow turbines, each one including fixed curved blades arranged in squirrel cage configuration about an axis of rotation. The turbines are mounted on a floating support on the water, placed directly in the fluid flow and arranged successively one after another with their axes parallel to each other and perpendicular to the flow.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: June 16, 2020
    Assignee: Arrecife Energy Systems S.L.
    Inventor: Jose Javier Doria Iriarte
  • Patent number: 10669998
    Abstract: A system, for storing and generating electrical energy in an aquatic environment, comprising: a plurality of weights (135) attached to an underwater PAP platform (131) positioned at a sufficient depth to avoid surface currents and the effects of bad weather. a generator lift (100), arranged to cooperate with the weights (135) and, in generation mode, to allow said weights to descend to the bottom zone (126) and, in drive mode, to raise them back up towards the surface (125); a main underwater platform which is positioned at a sufficient depth to avoid surface currents and the effects of bad weather (101) and is capable of supporting the upper portion of the generator lift (100) below the surface; a reversible motor (102), cooperating with the generator lift (100) and allowing, in generation mode, the production of electrical energy due to the action of the weights (135) as they descend, and, in drive mode, actuation of the generator lift (100) to raise the weights (135) back up.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: June 2, 2020
    Inventor: Christophe Stevens
  • Patent number: 10641275
    Abstract: This compressor is provided with a motor, a plurality of shafts each having a gear, a housing (30), and a plurality of impeller sections. The housing (30) includes a first housing element (31) and a second housing element (32) connectable to the first housing element from above and separable from the first housing element. A first upper end surface support section (41) is formed on an upper end surface of the first housing element (31). The housing (30) has at least one insertion support section (40A) having a shape that enables insertion of the gear and that supports the shaft, at a height position different from a height position of the first upper end surface support section (41).
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: May 5, 2020
    Assignee: Kobe Steel, Ltd.
    Inventor: Koumei Fujioka
  • Patent number: 10626871
    Abstract: A pump system comprises a fluid housing, a permanent magnet rotor, and an electric stator. The fluid housing has an axis, an axial inlet, and a radially outer outlet. The permanent magnet rotor is disposed on the axis, within the fluid housing, and has a plurality of perimetrically distributed fins that extend at least partly radially outward. The electric stator is disposed on the axis and within the fluid housing, and is situated adjacent the impeller fins of the permanent magnet rotor, separated from the impeller fins by an axial gap.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: April 21, 2020
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Jacek F. Gieras, Gregory I. Rozman
  • Patent number: 10590905
    Abstract: The floating apparatus for wave power generation according to the present invention includes; a floating unit floating on a sea surface; an energy unit configured to convert a kinetic energy of the floating unit to an electric or hydraulic energy; and a transfer unit configured to transfer the kinetic energy of the floating unit to the energy unit.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: March 17, 2020
    Assignees: INGINE, INC.
    Inventors: Yong Jun Sung, Min Su Cho, Jung Hee Kim
  • Patent number: 10584675
    Abstract: Provided is an underwater floating-type ocean current power generation device whereby cyclical directional vibration of a floating body of the ocean current power generation device, caused by shadow moment, can be suppressed. An underwater floating type ocean current power generation device includes ocean current power generation device main bodies, each including a rotor of a power generator housed in a nacelle, and a structure. The rotor is configured to be driven by a rotary blade protruding outward from the nacelle. A twin drum floating body capable of floating underwater is constituted by the structure and the ocean current power generation device main bodies joined to the left and right of the structure. The underwater floating type ocean current power generation device is moored to an ocean floor by a mooring rope.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: March 10, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kensuke Futahashi, Sho Onodera, Shin Asano, Tetsuhei Kobayashi
  • Patent number: 10541593
    Abstract: On an AC permanent magnet switched reluctance motor stator seat, “C-shaped” or “U-shaped” excitation salient pole pairs or compound excitation salient pole pairs are set up in a balanced way. Excited by excitation current, the permanent magnet flux of compound excitation salient pole pair is imported into the main loop of excitation flux to form compound excitation magnetic potential. On the rotor support, permanent magnets are fixed at the same interval, and the magnetic polarity of neighboring permanent magnets on a same rotating surface is different. When the rotating shaft rotates, two magnet pole faces of each permanent magnet on rotor support will be dead against the two ports of each excitation salient pole pair on the stator, forming a closed magnetic loop with air gap.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: January 21, 2020
    Inventor: Shanshan Dai
  • Patent number: 10523088
    Abstract: Systems and methods for operating an energy storage system in a doubly fed induction generator wind turbine system are provided. An energy storage system can include a transformer configured to transform AC power from a first voltage to AC power at a second voltage and a bi-directional AC to DC power converter coupled to the transformer. The bi-directional AC to DC power converter can be configured to convert the AC power at the second voltage to a DC power. The energy storage system can further include an energy storage device coupled to the bi-directional AC to DC power converter. The energy storage system can be configured to receive power generated by a rotor of the DFIG via an AC line bus. The energy storage device can be configured to store the power received by the energy storage system.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: December 31, 2019
    Assignee: General Electric Company
    Inventors: Parag Rameshchandra Dharmadhikari, Robert Roesner
  • Patent number: 10519924
    Abstract: A pool cleaner generator module with magnetic coupling. The generator module can include a housing, a paddle wheel, a magnetic follower, and a generator. The generator can power components of the pool cleaner, such as light emitting diode (LEDs). The housing can be removably coupled to the pool cleaner and can include a flow directing portion positioned in a fluid path of the pool cleaner. The paddle wheel can be located adjacent to the flow directing portion and can rotate in response to fluid flow through the fluid path. The generator can be magnetically coupled to the paddle wheel and can generate power through rotation of the paddle wheel. The LED can be coupled to the generator and can receive the generated power from the generator to illuminate an area adjacent to the pool cleaner.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: December 31, 2019
    Assignee: Pentair Water Pool and Spa, Inc.
    Inventors: Brian Deery, Suresh Gopalan
  • Patent number: 10514172
    Abstract: Fluid distribution systems comprising a wireless, self-recharging fluid distribution system and method for their use. In a preferred example, the fluid distribution system is an automated or semi-automated on-command hot water system, wherein the wireless, self-recharging fluid distribution system comprises a fluid turbine and a battery, for converting fluid flow into electricity to recharge the battery. In certain examples, the wireless, self-recharging fluid distribution system also comprises a sensor component, such as a sensor selected from the group consisting of a pressure sensor, a moisture sensor, a sound-receiving sensor, a temperature sensor, a flow sensor, and a chemical sensor. In some examples such fluid distribution systems may be of particular use in environments having limited access to electricity, such as vessels, mobile homes, trailers, and “of the grid”structures having no access to dependable electricity supply.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: December 24, 2019
    Assignee: ADVANCED CONSERVATION TECHNOLOGY DISTRIBUTION, INC.
    Inventor: Larry K. Acker
  • Patent number: 10508568
    Abstract: Power recovery turbines can be used debottlenecking of an existing plant, as well as recover electric power when revamping a plant. A process for recovering energy in a petroleum, petrochemical, or chemical plant is described. A fluid stream having a first control valve thereon is identified. A first power-recovery turbine is installed at the location of the first control valve, and at least a portion of the first fluid stream is directed through the first power-recovery turbine to generate electric power as direct current therefrom. The electric power is then recovered.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: December 17, 2019
    Assignee: UOP LLC
    Inventors: Stanley Joseph Frey, Thomas Ebner
  • Patent number: 10507897
    Abstract: A vessel propulsion apparatus includes an engine, an electric motor located farther forward than a propeller, a propeller shaft, a first transmission that defines a first transmission path extending from the engine to the propeller shaft to transmit power of the engine to the propeller shaft along the first transmission path, and a second transmission that defines a second transmission path, different from the first transmission path, extending from the electric motor to the propeller shaft to transmit power of the electric motor to the propeller shaft along the second transmission path.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: December 17, 2019
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Daisuke Nakamura
  • Patent number: 10478960
    Abstract: In a handheld machine tool having a tool housing, in which a drive motor is situated for driving a drive element equipped with at least one clamping surface, to which a spindle-locking device equipped with a blocking element and at least one spindle cylinder is assigned, the at least one spindle cylinder being able to be clamped in a spindle-lock operation of the spindle-locking device between the at least one clamping surface and the blocking element to prevent the drive element from rotating relative to the tool housing, wherein a positioning element associated with the spindle locking device is situated at least in sections on the at least one clamping surface, the positioning element being situated at least partially in the region between the at least one spindle cylinder and the at least one clamping surface.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: November 19, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Joachim Hecht, Marco Braun, Heiko Roehm, Stefan Mock
  • Patent number: 10476267
    Abstract: A load management system is disclosed. The load management system may include a generator, a power source configured to drive the generator, a load bank configured to produce an electrical load on the generator, a chopper operatively connected to the generator and the load bank, and a chopper regulator in communication with the generator and the chopper. The chopper may be configured to modulate the electrical load of the load bank on the generator. The chopper regulator may be configured to monitor generator parameters and control the chopper based on the generator parameters.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: November 12, 2019
    Assignee: Caterpillar Inc.
    Inventors: Douglas Brown, Vijay Janardhan, Eric Ohlson
  • Patent number: 10465648
    Abstract: An ocean current electric power generator includes a mechanical brake that restricts a rotation of a rotor shaft of a rotatable wing, and a power transmission mechanism that is disposed between the rotor shaft and an electric power generator. The power transmission mechanism includes a switching section that switches between a power transmission state and a power disconnection state, a load application section that applies a rotation load on the rotor shaft during the power disconnection state, and a speed varying section that varies a revolution speed of the rotor shaft, and transmits the revolution to the electric power generator during the power transmission state.
    Type: Grant
    Filed: September 7, 2015
    Date of Patent: November 5, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kensuke Futahashi, Tetsuhei Kobayashi, Shin Asano, Sho Onodera
  • Patent number: 10427771
    Abstract: A vessel propulsion apparatus includes an engine, an electric motor located farther forward than a propeller, a propeller shaft, a first transmission that defines a first transmission path extending from the engine to the propeller shaft to transmit power of the engine to the propeller shaft along the first transmission path, and a second transmission that defines a second transmission path, different from the first transmission path, extending from the electric motor to the propeller shaft to transmit power of the electric motor to the propeller shaft along the second transmission path.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: October 1, 2019
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Daisuke Nakamura
  • Patent number: 10415547
    Abstract: A wind turbine for generating electricity having a turbine assembly mounted on an inner support positioned within an aerodynamic fairing. The turbine assembly has an electrical generator positioned on the inner support and having a rotor shaft rotatable by a rotor blade. The aerodynamic fairing reduces the drag and wake created by the inner support.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: September 17, 2019
    Assignees: University of Virginia Patent Foundation, The Board of Trustees of the University of Illinois
    Inventors: Eric Loth, Michael S. Selig
  • Patent number: 10378504
    Abstract: Assemblies systems, and methods are disclosed for generating energy from natural forces and, more particularly, to energy generation using tidal action. A tidal energy conversion assembly includes a displacement vessel housing a directional converter that is coupled to an electrical power generator. The tidal energy conversion assembly further includes an anchor cable having a first end, a second end connected to the directional converter, and a length in between the first end and the second end. The anchor cable may be threaded through an anchor at a stationary location, such as a sea floor. The rising, falling, and/or drag forces of the tide cause a change in the length of 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.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: August 13, 2019
    Assignee: Big Moon Power, Inc.
    Inventors: Lynn Blodgett, Colin Bagley
  • Patent number: 10367355
    Abstract: A cascaded multi-level inverter system, a modulation method and a controller for the same are provided. The method includes performing a maximum power point tracking control based on a voltage signal and a current signal of each DC source and a voltage signal and a current signal of the power grid obtained by sampling, calculating a first modulation signal for suppressing power imbalance, and outputting the first modulation signal to each inverter unit; and calculating, based on the calculated reactive current instruction value, the calculated active current instruction value, and a current signal of the reactive compensation device obtained by sampling, a second modulation signal for causing an output power factor of the cascaded multi-level inverter system to be 1, and outputting the second modulation signal to the reactive compensation device.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: July 30, 2019
    Assignee: SUNGROW POWER SUPPLY CO., LTD.
    Inventors: Jun Xu, Yu Gu, Yilei Gu
  • Patent number: 10352293
    Abstract: A control device estimates a flow rate and an effective height difference of a fluid machine based on a characteristic detectable with regard to a rotating electrical machine and correlating with the flow rate and the effective height difference of the fluid machine. A total flow rate in a pipe system is estimated based on these values estimated by the control device and a flow resistance characteristic line, and cooperative control of the fluid machine and the flow rate control valve is performed such that the estimated value of the total flow rate becomes close to a target flow rate of the total flow rate in the pipe system.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: July 16, 2019
    Assignee: Daikin Industries, Ltd.
    Inventors: Tomomi Sakamoto, Atsushi Suhara
  • Patent number: 10355557
    Abstract: The invention discloses an ocean current power generator disposed in the ocean. The ocean current power generator includes two power generators, a foil floating member and a control unit. Each of the power generators includes an impeller, and the ocean current drives the impellers to rotate to generate electricity. The foil floating member is connected to the two power generators, and the foil floating member includes a front body and a rear body. The control unit is configured to control the amount of sea water in the front body or the rear body, so as to adjust the center of gravity of the foil floating member.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: July 16, 2019
    Assignee: NATIONAL TAIWAN UNIVERSITY
    Inventors: Forng-Chen Chiu, Jen-Hwa Guo, Jing-Fa Tsai, Jen-Shiang Kouh, Jiahn-Horng Chen, Ching-Yeh Hsin
  • Patent number: 10323619
    Abstract: An underwater structure including a power generation apparatus including a main body; a mounting portion connected to the main body defining a mounting axis; a connection carrier, a connector mounted on the connection carrier; and an actuation mechanism in communication with the connection carrier. The structure further includes a support structure adapted for engagement with a bed of a body of water; a support housing; a support connection carrier attached to the support housing; and a support connector mounted on the support connection carrier. The mounting portion and the support housing are adapted to cooperate with one another for mounting of the power generation apparatus on the support structure. The connection carrier is releasably engageable with the support connection carrier, such that the connection carrier is moveable between an engaged position and a disengaged position.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: June 18, 2019
    Inventors: Paul Vigars, Christopher Huxley-Reynard
  • Patent number: 10295581
    Abstract: A controller including a memory having computer-readable instructions stored therein; and a processor configured to execute the computer-readable instructions to: estimate a synthesized grid voltage vector angle at a terminal of an alternating current (AC) grid based on at least an adjusted angle, to generate Pulse Width Modulation (PWM) signals to control power switches of the AFE inverter based on at least the synthesized grid voltage vector angle, and to control the AFE inverter to exchange power between the AC grid and a load based on the PWM signals.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: May 21, 2019
    Assignee: Deere & Company
    Inventors: Tianjun Fu, Long Wu, Kent Wanner, Jason Dickherber, Chris J. Tremel
  • Patent number: 10253604
    Abstract: This disclosure describes various implementations of a downhole-blower system that can be used to boost production in a wellbore. The downhole-blower system includes a blower and an electric machine coupled to the blower that can be deployed in a wellbore, and that can, in cooperation, increase production through the wellbore.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: April 9, 2019
    Assignee: Upwing Energy, LLC
    Inventor: Herman Artinian
  • Patent number: 10233907
    Abstract: A method is proposed for operating a wind turbine, including the following steps: deriving at least one turbulence characteristic of atmosphere hitting the wind turbine, determining at least one wind turbine specific parameter based on the at least one derived turbulence characteristic, and operating the wind turbine according to the at least one determined turbine specific parameter is provided. Further, a wind turbine and a device as well as a computer program product and a computer readable medium are also provided.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: March 19, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael J. Asheim, Steven Buck
  • Patent number: 10218293
    Abstract: A piezoelectric harvesting system using repulsion force, according to one embodiment of the present invention, comprises: a piezoelectric body comprising a piezoelectric material; a fixed portion to at least one surface of which the piezoelectric body is adhered; a support portion for supporting one side of the fixed portion; and a repulsion force-providing portion for providing repulsion force to the fixed portion, so that the piezoelectric body generates electric energy when the fixed portion is deformed due to application of external force and then recovered. According to one embodiment of the present invention, additional shock is applied to the fixed portion to which the piezoelectric body is adhered when recovering after being deformed, thereby increasing the amount of electric energy generated due to the deformation of the piezoelectric body.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: February 26, 2019
    Assignee: AMC ENERGY CO., LTD.
    Inventors: Tae Hyun Sung, Hyun Jun Jung, Ki Hwan Baek, Daniel Song, Chan Ho Yang
  • Patent number: 10150550
    Abstract: A vessel propulsion apparatus includes an engine, an electric motor located farther forward than a propeller, a propeller shaft, a first transmission that defines a first transmission path extending from the engine to the propeller shaft to transmit power of the engine to the propeller shaft along the first transmission path, and a second transmission that defines a second transmission path, different from the first transmission path, extending from the electric motor to the propeller shaft to transmit power of the electric motor to the propeller shaft along the second transmission path.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: December 11, 2018
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Daisuke Nakamura
  • Patent number: 10151294
    Abstract: A buoyant energy generating housing apparatus submersed in fluid currents. The disclosed embodiments comprises rotary turbines that harvest the kinetic energy in the currents, and buoys that house equipment and provide buoyancy to support the system. Movements and rotations are restrained by multiple cables or tendons that are anchored on the seabed, in combination with the internal active ballast system in the buoys. Applications in currents with direction change are possible with the use of two-buoy embodiments, further assisted by the optional use of weathervanes.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: December 11, 2018
    Inventor: Zhanfei Fan
  • Patent number: 10151089
    Abstract: A flush valve for a toilet, the flush valve including a main valve unit for causing a main valve body to reciprocate between a closed position and an open position in response to pressure inside a back pressure chamber communicating with a primary side flow path thereby opening and closing a flow path between the primary side flow path and the secondary side flow path. The flush valve further including a sub-valve unit having a sub-valve body for opening and closing a bypass flow path connecting the back pressure chamber and the secondary side flow path. The flush valve further including a generating unit disposed on the downstream side of the main valve unit and serving as flow path resistance on the secondary side flow path. Wherein the bypass flow path is connected to the secondary side flow path downstream of the generating unit.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: December 11, 2018
    Assignee: Toto Ltd.
    Inventor: Hodaka Saruwatari
  • Patent number: 10087908
    Abstract: An underwater installation-type water-flow power generation system including a weight body fixedly installed on a bottom of a sea area with an ocean current, a power generating device including a diagonal plate frontage portion moored by the weight body through a mooring fixture and provided on a front part of a power generating device body, a variable blade type rotary impeller, and a power generator for obtaining a power generation output by using a rotary force of the variable blade type rotary impeller; and a buoyancy body floating in the ocean current area above the power generating device body and applying a tension to the power generating device body through a pulling tool so that the diagonal plate frontage portion of the power generating device body is facing the ocean current at all times.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: October 2, 2018
    Assignee: JAPAN SYSTEM PLANNING CO., LTD.
    Inventor: Katsuyuki Kumano
  • Patent number: 10036365
    Abstract: A system is provided for converting fluid motion into electrical power, with the system being deployable in a body of fluid. The system includes a support structure and a movable structure connected to the support structure. The support structure includes a generator assembly configured to convert mechanical energy to electrical energy and provide electric power from the electrical energy. The movable structure has three or more degrees of freedom, and is configured to generate mechanical energy for conversion by the generator assembly during a power generation phase of a power cycle in which the fluid motion acts on the movable structure. The movable structure has a first configuration during the power generation phase and a second, different configuration during a recovery phase of the power cycle, with the movable structure in the first configuration having a greater surface area normal to the flow of fluid.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: July 31, 2018
    Assignee: THE BOEING COMPANY
    Inventor: Brian C. Grubel