Patents Examined by Kawing Chan
  • Patent number: 10800048
    Abstract: A robot includes a robot housing containing a robot control apparatus that controls the robot having a motor, a brake that brakes the motor by short-circuiting between power lines for supplying electric power to the motor, and a conversion element that converts a current generated by braking of the motor by the brake into heat, wherein the conversion element is attached to the robot housing.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: October 13, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Kotaro Sekine, Ryosuke Teranaka
  • Patent number: 10803736
    Abstract: An external smart device for a ceiling fan receiving box comprises a wireless control receiving box body and a ceiling fan control receiving box body, which are of selectable in assembly and disassembly, so as to provide users with the choices of their selections. It reduces costs of production and purchase. When some component fails, it can be individually replaced, reducing material waste and generation in an environment-friendly way. It also reduces the costs for component replacements. Thus, it achieves the effects of low costs of purchase and replacements and being environment-friendly.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: October 13, 2020
    Inventor: Yi-Kai Chang
  • Patent number: 10800415
    Abstract: Methods and systems are provided for electrically-assisted engine braking. In one example, a method may include operating a turbocharger by an electric motor during engine braking to increase air flow to an engine intake. The enhanced air flow into the engine intake increases an exhaust manifold pressure, thus increased a braking force provided by engine braking.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: October 13, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Liangjun Hu, Devesh Upadhyay, Kang Song
  • Patent number: 10797612
    Abstract: A power distribution system includes a first set of power converters arranged with a respective set of power inputs, and having a respective set of power outputs, and at least one controller module communicatively connected with the first set of power converters and configured to controllably adjust the power conversion of the first set of power converters, and method of operating the power distribution system.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: October 6, 2020
    Assignee: GE Aviation Systems LLC
    Inventors: Hao Huang, Zhiqiao Wu
  • Patent number: 10784806
    Abstract: An electric motor driving apparatus controls driving of an electric motor having two or more phase windings whose ends are open by using first and second inverters. A control unit includes a first inverter control circuit and a second inverter control circuit. The first inverter control circuit generates a first voltage command as an output voltage command to the first inverter based on a torque command. The second inverter control circuit generates a second voltage command as an output voltage command to the second inverter. The control unit determines a composite voltage command based on a first voltage command vector and a second voltage command including a case, in which a pure phase difference between the first voltage command vector on a dq coordinate corresponding to the first voltage command and the second voltage command vector on the dq coordinate corresponding to the second voltage command is other than 180°.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: September 22, 2020
    Inventors: Ryuji Omata, Yuri Murata, Makoto Nakamura, Kiyotaka Matsubara, Daigo Nobe
  • Patent number: 10778124
    Abstract: A method of controlling an electric motor assembly includes receiving sensor feedback that is based at least in part on electrical properties of a variable frequency power signal provided to the electric motor assembly. The method also includes adjusting the phase angle of the variable frequency power signal provided to the electric motor assembly based at least in part on the sensor feedback. The method also includes determining an operational status of the electric motor assembly that receives the variable frequency power signal based at least in part on the sensor feedback.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: September 15, 2020
    Assignee: General Electric Company
    Inventors: Nathaniel Benedict Hawes, Stefan Grubic, Prabhakar Neti
  • Patent number: 10767627
    Abstract: Method for control of the torque performance of an electric pitch motor (1). A control system (2) comprises a first unit (3) controlling the pitch angle of the rotor blade, a second unit (7) which compares a reference speed Sr with an actual speed Sa of the motor (1) rotational speed. The second unit (7) controls the motor (1) rotational speed, a third unit (10) which regulates the motor (1). The control system (2) comprises a first overload device (13) and a second overload device (14). The second overload device (14) receives an error-speed signal Se, which is the difference between Sr and Sa recorded by the second unit (7). The second overload unit (14) compares See with a maximum allowable speed value, Smax, and the second overload device (14) sends a signal to the motor (1) for the regulation of the torque performance.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: September 8, 2020
    Assignee: DEIF A/S
    Inventors: Jesper Thomsen, Christian Nielsen, Torben Rønnow, Jacob Danielsen
  • Patent number: 10763769
    Abstract: A controller for a power convertor includes: a torque command value calculation module to calculate a first torque command value to a power convertor; a torque command limit module to receive the first torque command value and generate a second torque command value obtained by correcting the first torque command value so that the first torque command value is limited to a torque limiter range. The torque command limit module sets a width between the upper limit torque value and the lower limit torque value of the torque limiter range to be smaller as a fundamental wave output frequency of the power convertor increases at least in a speed region equal to or higher than a field weakening starting point.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: September 1, 2020
    Assignees: Wisconsin Alumni Research Foundation, Toshiba Mitsubishi-Electric Industrial Systems Corporation
    Inventors: Yang Xu, Chikara Morito, Robert D. Lorenz
  • Patent number: 10763772
    Abstract: An electrical system includes an inverter connected to AC and DC voltage buses, a cycloidal electric machine connected to the PIM via the AC voltage bus, and a controller. The machine's rotor is eccentric with respect to the stator, an airgap between the stator and rotor is smaller at an instantaneous center of rotation of the rotor than elsewhere around a circumference of the rotor, and the rotor moves with two degrees of freedom (2DOF), i.e., rotating and orbiting motion. The controller receives a torque command, the rotor position signal, and the current signals, and in response identifies an optimal stator pole or pole pair located proximate the instantaneous center of rotation and energizes the optimal stator pole or pole pair via the PIM prior to energizing another stator pole or pole pair of the stator.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: September 1, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: Alireza Fatemi, Derek F. Lahr
  • Patent number: 10756652
    Abstract: In the field of motor protection for industrial automation systems, HVAC systems, pumping systems, and/or similar implementations, improved motor starters and overload electronics can be configured to offer substantially automatic levels of protection for motors, independent of such starters and/or overload electronics first being calibrated for, or properly calibrated for, the motor.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: August 25, 2020
    Assignee: Franklin Electric Co., Inc.
    Inventors: Andre Pierre Perra, Kent Jeffrey Holce, Scott E. Leonard
  • Patent number: 10754299
    Abstract: An electronic watch with a two-coil stepper motor including: a magnetized rotor; a stator including: first and second stator magnetic-pole portions, which are formed so as to oppose to each other through the rotor; and a third stator magnetic-pole portion, which is formed between the first stator magnetic-pole portion and the second stator magnetic-pole portion so as to face the rotor; a coil A to be magnetically coupled to the first stator magnetic-pole portion and the third stator magnetic-pole portion; and a coil B to be magnetically coupled to the second stator magnetic-pole portion and the third stator magnetic-pole portion; and a high-speed drive pulse generation circuit configured to output a drive pulse for driving the rotor to the coil A or the coil B, and wherein the rotor is rotationally driven in increments of 360° due to a drive pulse train formed of the plurality of drive pulses.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: August 25, 2020
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Yu Takyoh, Toshiaki Fukushima, Toshinari Maeda, Daisuke Iri, Daisuke Matsuoh, Masatoshi Nishida
  • Patent number: 10746450
    Abstract: A motor control assembly for an electric motor. The motor control assembly is configured to be coupled to the electric motor, and includes a wireless communication module, an input power connector, and an inverter module. The wireless communication module is configured to receive a wireless signal from a system controller. The input power connector is configured to receive a DC voltage from an external power supply module. The inverter module is coupled to the wireless communication module and the input power connector. The inverter module is configured to convert the DC voltage to an AC voltage to operate the electric motor according to the wireless signal.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: August 18, 2020
    Inventors: Ludovic Andre Chretien, Roger Carlos Becerra
  • Patent number: 10742141
    Abstract: An electrical drive system having multiple drive units for motor vehicles, especially for pure electric vehicles, and a method for operating the drive system.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: August 11, 2020
    Assignee: AUDI AG
    Inventors: Andreas Apelsmeier, Maximilian Schiedermeier
  • Patent number: 10742154
    Abstract: This motor driving device is provided with a direct-current power supply, an inverter, and a noise filter. The noise filter is provided with: a choke coil, wherein a first winding and a second winding are wound on a common core, and the first winding is inserted into a positive electrode bus; and two capacitors connected in series between the positive electrode bus and a negative electrode bus. One end of the second winding is connected to a neutral point of a three-phase motor, and another end of the second winding is connected to a wire between the two capacitors.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: August 11, 2020
    Inventor: Masamichi Nawa
  • Patent number: 10707787
    Abstract: A motor, a driving circuit thereof and a driving method thereof are provided. The motor driving method includes: during a motor starting stage, when a detected rotor magnetic field is a first polarity and a polarity of an AC power source is positive, or the detected rotor magnetic field is a second polarity and the polarity of the AC power source is negative after a zero voltage crossing point of the AC power source, instantly sending a trigger pulse to a controllable bidirectional AC switch connected in series with a motor winding at both ends of the AC power source; during a motor operating stage, after the zero voltage crossing point of the AC power source, sending a trigger pulse to the controllable bidirectional AC switch after a delay time after the zero voltage crossing point. This method can provide a large torque during the motor starting stage.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: July 7, 2020
    Assignee: Johnson Electric International AG
    Inventors: Chiping Sun, Shinghin Yeung, Haibo Jiang, Guodong Liu, Shujuan Huang
  • Patent number: 10689227
    Abstract: The invention refers to an electric linear motor, control apparatus, transport system and a method. The electric linear motor comprises a longitudinal stator beam; at least one mover at least partially surrounding the stator beam and adapted to move along the stator beam; which stator beam comprises at least two side faces located at opposite sides of the stator beam, each of the side faces carrying ferromagnetic poles spaced apart by a pitch, and which mover comprises at least two counter-faces facing the respective side faces of the stator beam. The mover has in at least one of said counter-faces rotor units having at least one winding and at least one permanent magnet arranged to co-act with the ferromagnetic poles of the respective side faces of the stator beam.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: June 23, 2020
    Assignee: Kone Corporation
    Inventors: Tuukka Korhonen, Tero Hakala, Pasi Raassina, Seppo Suur-Askola, Marko Hinkkanen, Seppo Saarakkala, Maksim Sokolov, Reza Hosseinzadeh
  • Patent number: 10693411
    Abstract: An overvoltage protection method and device of an electronic governor in an aerial vehicle, and an aerial vehicle with the device are provided. The electronic governor is configured to control a motor. The method includes: collecting a DC bus voltage of the electronic governor; when the DC bus voltage is greater than a first voltage threshold and less than or equal to a second voltage threshold, adjusting a control parameter of the electronic governor based on a difference between the DC bus voltage and the first voltage threshold, such that the electronic governor controls the motor based on the adjusted control parameter to restrain further rise of the DC bus voltage, in which the second voltage threshold is greater than the first voltage threshold.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: June 23, 2020
    Inventor: Jiangtao Yu
  • Patent number: 10686394
    Abstract: Methods and systems for real-time, in-service, non-intrusive condition monitoring of turn-to-turn faults (TTFs) of an induction motor stator in a drive system. A time-domain-based signal processing technique, mathematical morphology, can be used for condition monitoring based on the radiated electromagnetic (EM) field from the induction motor. The vector control technique implemented to drive the induction motor can be direct torque control, and the mathematical morphology technique can detect incipient TTFs based on the radiated magnetic field.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: June 16, 2020
    Assignee: The Florida International University Board of Trustees
    Inventors: Hassan H. Eldeeb, Alberto Berzoy, Ahmed A. Saad, Osama Mohammed
  • Patent number: 10675963
    Abstract: A control device for a transport vehicle configured to travel with a driving force output from an electric motor is provided. When the transport vehicle is driven by a driving force of the electric motor, the control device performs a driving force limit control to reduce the driving force of the electric motor based on a coefficient of static friction of the transport vehicle in a case of satisfying conditions that a parameter relating to a traveling speed of the transport vehicle is less than a first threshold value and a state in which the parameter is less than the first threshold value continues for a predetermined time or more.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: June 9, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuhei Matsuo, Toshihide Tanaka
  • Patent number: 10677131
    Abstract: A method for determining a temperature of a diaphragm of a pump, the pump pumping a fluid out of a tank to a dispersion point by way of a movement of the diaphragm, the pump being fastened to the tank, the temperature of the diaphragm being estimated in a manner which is at least dependent on the temperature of the fluid in the tank.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: June 9, 2020
    Assignee: Vitesco Technologies GmbH
    Inventors: Thomas Meier, Bhagespur Naveen, Udaya Peruvaje, Thomas Schön, Vivek Venkobarao