Patents Examined by Julio C. Gonzalez
  • Patent number: 10855214
    Abstract: Disclosed is an energy management system for an aircraft. The system includes an electric machine including a stator surrounding a rotor having permanent magnets disposed therein, wherein rotation of the rotor causes an alternating current to be generated in windings of the stator that is uncontrolled. The system includes an electric propulsion system. The system includes a bidirectional power converter having a first side connected to the electric machine and a second side galvanically isolated from the first side and connected to the electric propulsion system. The bidirectional power converter includes a switching network that regulates power associated with the electric machine and power transfer across the bidirectional power converter. The switching network is operable to satisfy collective power flows of the electric machine and the electric propulsion system through the bidirectional power converter.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: December 1, 2020
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventors: Mustansir Kheraluwala, Xin Wu
  • Patent number: 10844831
    Abstract: Methods, system and devices 10 for capturing wave energy are disclosed. A submersible wave energy capture device 10 comprises a tube 12 and a plurality of one-way valves 21, 31, 41. The tube 12 has a seawater inlet 11 at an upstream end 10u of the tube 12. The downstream end 10d of the tube 12 is communicable with an energy utilisation means 2 powered by seawater flow from the tube 12. The one-way valves 21, 31, 41 divide the tube 12 into a series of chambers 20, 30, 40. The chambers comprises elastic walls 22, 32, 42. These are deformable so as to alter an effective internal volume of each respective chamber 20, 30, 40. The valves 21, 31, 41, open to permit water flow within the tube 12 in a downstream direction, and close to resist water flow within the tube 12 in an upstream direction.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: November 24, 2020
    Assignee: FORTITUDO MARIS LTD
    Inventor: Zsolt Szarka
  • Patent number: 10840845
    Abstract: A vehicle drive control device that controls a vehicle drive device in which a first engagement device, a rotating electrical machine, and a second engagement device are provided in this order from an input side in a mechanical power transmission path connecting an input to an output, the input being drive-coupled to an internal combustion engine serving as a vehicle drive power source, and the output being drive-coupled to wheels, wherein each of the first engagement device and the second engagement device can be changed between an engaged state in which drive power is transmitted and a disengaged state in which drive power is not transmitted, the vehicle control device including an electronic control unit.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: November 17, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Masakazu Sato, Yomei Hakumura, Masashi Miyazaki, Masayoshi Yanagida
  • Patent number: 10804828
    Abstract: To provide a generator controller can determine permission of power generation autonomously within a range where startability is not deteriorated, even in the case where the generator controller cannot communicate with the engine controller. A generator controller, in case of communication normal time with engine controller, permits the generation voltage control when the permission command signal is received from the engine controller and the generator rotational speed is higher than a determination value at communication normal time, and prohibits the generation voltage control at other times; in the case of communication failure time, permits the generation voltage control when the generator rotational speed is higher than a determination value at communication failure time, and prohibits the generation voltage control at other times.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: October 13, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Norifumi Uno, Masahiro Nakajima, Keisuke Katsurada, Junya Sasaki
  • Patent number: 10801475
    Abstract: A multi-buffer energy accumulation apparatus comprises: an energy storage cylinder, an oil tank, a first scroll spring mechanism, a second scroll spring mechanism, a hydraulic motor, differential planetary train of gearings, and a generator; wherein the energy storage cylinder comprises a hermetically sealed cylinder body, one end of the hermetically sealed cylinder body being provided with an elastic mobile device, the other end thereof being provided with an energy transmission device, and hydraulic oil is filled in the hermetically sealed cylinder body between the elastic mobile device and the energy transmission device; the hermetically sealed cylinder body, the hydraulic motor, and the oil tank are connected via an oil circuit to form a hydraulic loop; the energy transmission device is connected with the first scroll mechanism; the hydraulic motor is connected with the second scroll spring mechanism.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: October 13, 2020
    Assignee: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Chenglong Wang, Zhiwei Qiu, Qingliang Zeng, Meng Chen, Zhihai Liu, Shumeng Ma, Yue Wang
  • Patent number: 10797574
    Abstract: An electrical machine has a stator with windings, first and second rotors, and an electrical output regulator. The first rotor carries alternating polarity first field magnets, such that, on drive mechanism rotation, the windings interact with the magnetic flux produced by the first magnets to create an EMF. The second rotor carries alternating polarity second field magnets, and has first and second rotational positions to reduce and increase, respectively, the magnetic flux energy. The electrical output regulator regulates a current from the windings to produce a torque on the rotors, as the drive mechanism increases from zero rotational speed, the torque rises above a threshold level that moves the second rotor from the first to the second rotational position, and, as the drive mechanism further increases the rotational speed, the torque peaks and then drops below the threshold level to move the second rotor back to the first rotational position.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: October 6, 2020
    Assignee: ROLLS -ROYCE plc
    Inventors: Simon Turvey, Keir Wilkie
  • Patent number: 10790769
    Abstract: Provided are a control method and system for enhancing an endurance capability to an abnormal voltage of a wind turbine generator system. The control method, includes; providing a doubly-fed wind turbine generator system connected to a power grid; detecting a voltage of the power grid, and determining whether the voltage of the power grid has a fault; when the voltage of the power grid has a fault, detecting a voltage of the DC buses, and determining whether the voltage of the DC buses exceeds a limit value; when the voltage of the DC buses exceeds the limit value, performing integrated system coordination control according to an abnormal operating condition mode; and when the voltage of the power grid returns to a normal range, performing integrated system coordination control according to a normal operating condition mode.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: September 29, 2020
    Assignees: Wind Power Technology Center of Gansu Electric Power Company, State Grid Corporation of China, Gansu Electric Power Company of State Grid, Shanghai Jiao Tong University
    Inventors: Ningbo Wang, Liang Lu, Kun Ding, Shiyuan Zhou, Chen Zhang, Jin Li, Zheng Li, Nianzong Bai, Jing Zhi, Xu Cai, Youming Cai
  • 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: 10790770
    Abstract: A method for operating an electrical power system includes detecting a bridge current magnitude in a rotor-side converter or line-side converter of a power converter, the power converter electrically coupled between a generator rotor and a transformer. The method further includes comparing the bridge current magnitude in the one of the rotor-side converter or line-side converter to a primary predetermined threshold. The method further includes disabling bridge switching of one of the rotor-side converter or line-side converter when the bridge current magnitude exceeds the primary predetermined threshold.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: September 29, 2020
    Assignee: General Electric Company
    Inventors: Cornelius Edward Holliday, Anthony Michael Klodowski
  • Patent number: 10778126
    Abstract: A system includes one or more synchronous generators and one or more corresponding exciters. The exciter is configured to output a field current for exciting the synchronous generator to produce a voltage and a current at an output of the synchronous generator. The system may also include one or more electric motors electrically coupled to the synchronous generator and configured to drive one or more mechanical loads. A controller included in the system is configured to identify power angle oscillations between the voltage and the current and control an exciter voltage of the exciter to damp the identified power angle oscillations.
    Type: Grant
    Filed: March 9, 2019
    Date of Patent: September 15, 2020
    Assignee: Rolls-Royce North American Technologies Inc.
    Inventors: Mark Jon Blackwelder, Paul M. Rancuret
  • Patent number: 10778123
    Abstract: An apparatus includes a first inverter circuit and a second inverter circuit. The first invertor circuit is configured to couple an alternator and a load device to deliver a driving signal from the alternator to the load device. The second invertor circuit is configured to couple the alternator to the load device to deliver a driving signal from the alternator to the load device and configured to couple a battery to the alternator to deliver a charging signal from the alternator the battery.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: September 15, 2020
    Assignee: Kohler Co.
    Inventors: Isaac S. Frampton, Adam Larson
  • Patent number: 10767634
    Abstract: A blade icing state identification method and apparatus for a wind generator set are disclosed. The method includes setting a preset wind speed threshold and a preset rotating speed threshold, and setting the preset rotating speed threshold as a lower limit value of a maximum limited rotating speed of the wind generator set operating under a limited power condition; comparing a current wind speed and a current rotating speed of the wind generator set with the preset thresholds respectively; progressively increasing a blade icing possibility index when the current wind speed is greater than the preset wind speed threshold and the current rotating speed of the wind generator set is smaller than the preset rotating speed threshold, and otherwise, progressively decreasing the blade icing possibility index; and determining that blades are in an icing state when the blade icing possibility index is greater than a preset index.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: September 8, 2020
    Assignee: BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD.
    Inventors: Jie Zhou, Chi Yu, Jianjun Yang
  • 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: 10760547
    Abstract: A method for controlling voltage of a DC link of a power converter of an electrical power system connected to a power grid includes operating the DC link to an optimum voltage set point that achieves steady state operation of the power converter. The method also includes monitoring the power grid for one or more transient events that may be an indicator of one or more sub-synchronous control interaction (SSCI) conditions occurring in the electrical power system. Upon detection of the transient event(s) occurring in the power grid, the method also includes immediately increasing the optimum voltage set point to a higher voltage set point of the DC link. Moreover, the method includes operating the DC link at the higher voltage set point until the sub-synchronous control interaction(s) is damped, thereby optimizing voltage control of the DC link.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: September 1, 2020
    Assignee: General Electric Company
    Inventors: Dustin Howard, Min Naing Lwin, Robert Gregory Wagoner, Govardhan Ganireddy
  • Patent number: 10731555
    Abstract: A micro-CHP gas boiler comprises a heat exchanger having a combustion space surrounded by a water flowpath, and a gas turbine assembly which is installed in the combustion space. The gas turbine assembly includes a generator surrounded by an annular combustion chamber and cooled by a water jacket which forms part of the flowpath, and a fuel gas compressor which is integrated into the thrust runner on the turbine rotor shaft between foil air bearings.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: August 4, 2020
    Assignee: SAMAD POWER LIMITED
    Inventor: Seyed Mohammad Mohseni
  • Patent number: 10731630
    Abstract: A control method for increasing reactive power generation of a wind turbine having a Doubly-Fed Induction Generator (DFIG) includes obtaining, by a control device having one or more processors and one or more memory devices, wind forecast data of the wind turbine. Further, the method includes generating, by the control device, a real-time thermal model of the DFIG of the wind turbine using the wind forecast data. More specifically, the thermal model defines a thermal capacity for the DFIG that does not exceed system limits. Thus, the method also includes dynamically adjusting, by the control device, a reactive power set point of the DFIG of the wind turbine based on the real-time thermal model.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: August 4, 2020
    Assignee: General Electric Company
    Inventors: Arvind Kumar Tiwari, Rajni Kant Burra, Yashomani Y. Kolhatkar, Harold Robert Schnetzka
  • Patent number: 10720866
    Abstract: A power system includes a bus, a first controller and one or more second controllers. The first controller is configured to excite a first generator to generate electric power on the bus in response to initiation of rotation of the first generator. The one or more second controllers are configured to excite one or more respective second generators with a constant excitation in response to initiation of rotation of the first generator. The second generator(s) are electrically coupled with the bus and configured to operate as a motor to commence synchronous rotation with the first generator in response to electric power being present on the bus. The second controller(s) are further configured to initiate dynamic adjustment of the excitation of the second generator(s) to generate electric power on the bus with the second generator(s) in response to the first generator and the second generator(s) synchronously reaching a predetermined rotational speed.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: July 21, 2020
    Assignee: Rolls-Royce North American Technologies Inc.
    Inventors: Mark Jon Blackwelder, Paul M. Rancuret
  • Patent number: 10715065
    Abstract: A wind power generation system including a doubly fed induction generator (DFIG) of a wind turbine is presented. The DFIG includes a rotor and a stator, a rotor-side conversion unit coupled to the rotor, a direct current (DC) link, and at least one line-side conversion unit coupled to the rotor-side conversion unit via the DC link and coupled to the stator of the DFIG. The at least one line-side conversion unit includes exactly one first converter, high frequency transformers, and second converters, where each of the second converters is coupled to the first converter via a respective high frequency transformer, and inverters, where each of the inverters is coupled to a respective second converter and includes an alternative current (AC) phase terminal.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: July 14, 2020
    Assignee: General Electric Company
    Inventors: Kapil Jha, Arvind Kumar Tiwari, Saurabh Shukla, Olive Ray
  • Patent number: 10707791
    Abstract: An electrical generator (114) and a power electronics interface (115) for a direct-drive turbine (110). The turbine (110) may include a rotor (112) for transforming kinetic (from, e.g., wind, water, steam) into mechanical energy, the generator (114) for transforming the mechanical into electrical energy, and the power electronics interface (115) for conditioning the electrical energy for delivery to a power distribution grid (124). The interface (115) includes a three-phase single-stage boost inverter (120) for converting a lower DC voltage into a higher AC voltage, and which uses a synchronous reactance of the generator (114) as a DC-link inductance. The turbine (110) has neither the gearbox of indirect-drive designs nor the electrolytic capacitor bank of conventional direct-drive designs, while still allowing for a substantially smaller number of generator poles, resulting in reduced size, weight, complexity, and cost.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: July 7, 2020
    Assignee: Kansas State University Research Foundation
    Inventor: Behrooz Mirafzal
  • Patent number: 10697416
    Abstract: An engine generator, including an engine having a piston reciprocating inside a cylinder, a generator unit having a three-phase winding, driven by the engine to generate power and operating as an engine starter motor during engine starting, a power converter circuit connected to the generator unit, a battery supplying power to the generator unit through the power converter circuit during engine starting, an engine speed detection unit detecting an engine speed, a connection switching unit switching a connection configuration of the winding to one of a wye-connection and a delta-connection, and a connection switching control unit controlling the connection switching unit to switch the connection configuration to the wye-connection when the engine speed is lower than a predetermined engine speed, and to switch the connection configuration to the delta-connection when the engine speed is equal to or higher than the predetermined engine speed, during engine starting.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: June 30, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Wataru Matsuyama, Kenji Shibata, Tetsuya Matsuhisa, Minoru Maedako