Patents Examined by Said Bouziane
  • Patent number: 11984752
    Abstract: A motor driven actuator device includes an actuator motor; a controller; an input for receiving an external power supply; and a battery pack electrically connected to selectively drive the actuator motor, and electrically connectable to the external power supply for charging. During charging of the battery pack, the controller is configured to compare a measured charge level with a pre-determined charge level required to complete at least two battery shutdown events under battery power alone. During subsequent actuator device operation, the controller is configured to: determine if the external power supply is invalid, instruct a battery shutdown event causing the battery to be discharged, with enough charge in the battery to complete at least one further battery shutdown event; and, subsequently detect when the external power supply becomes valid, and resume actuator device operation under the external power supply, while simultaneously recharging the battery pack to at least the pre-determined charge level.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: May 14, 2024
    Assignee: ROTORK CONTROLS LIMITED
    Inventors: Jonathan Wiggins, David Ware, Nian You Tan
  • Patent number: 11984839
    Abstract: A propulsive electric motor set for aircraft includes an electrical energy source and an electric motor provided with a drive shaft on which is mounted a propeller. The electric motor includes a first set of windings linked to the electrical energy source to provide a rotational drive function for the drive shaft. The electric motor further includes a second set of windings which, when the drive shaft is driven in rotation by an electric powering of the first set of windings, provides an electric generation function configured to supply non-propulsive loads of the aircraft. Thus, the non-propulsive loads of the aircraft can be electrically powered without any overload compromising the aerodynamics of the aircraft.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: May 14, 2024
    Assignee: Airbus Operations SAS
    Inventors: Jean-François Allias, Olivier Raspati
  • Patent number: 11984751
    Abstract: A discharge circuit for a power supply circuit for a motor is configured to discharge a capacitor provided in the power supply circuit. The discharge circuit includes a first voltage detector detecting a voltage inputted to a primary side of the power supply circuit, a second voltage detector detecting a voltage on the secondary side, and a discharge resistance provided in parallel with the power supply circuit on the secondary side of the power supply circuit. A power supply control means performs discharge control when a voltage detected by the second voltage detector exceeds a regenerative determination value and, in a case that a voltage on the primary side detected by the first voltage detector becomes lower than a power failure determination value, the power supply control means performs the discharge control after a lapse of a time period required for a stop operation of the industrial robot.
    Type: Grant
    Filed: December 2, 2021
    Date of Patent: May 14, 2024
    Assignee: NIDEC SANKYO CORPORATION
    Inventor: Hiroaki Nagata
  • Patent number: 11979102
    Abstract: Enhanced network power factor corrective designs are presented that can use corrective devices that achieve long-term, operationally stable mechanical work. Embodiments can utilize reverse-winding induction motor designs with engineerable parameters and configurations for the reverse winding (13) in systems and through methods where an inductive motor (1) can present a current that leads voltage and a leading power factor (16) to correct other existing induction motors (8) in an initial network (9) or be optimized for a particular application. Designs also present a power factor correction that can present a variable correction without altering the character or physical capacitive value of an electrical correction component. Individual induction motors that have leading current and a leading power factor (16) can be provided to improve reverse winding induction motors.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: May 7, 2024
    Assignee: Adventech, LLC
    Inventor: Gerald Goche
  • Patent number: 11967917
    Abstract: Pairs of phases of an AC power source are connected to pairs of phases of a motor in a first sequence that repeats at a first frequency. The motor is braked by connecting pairs of phases of the AC power source to pairs of phases of the motor in a second sequence that is reversed with respect to the first sequence and that repeats at a second frequency less than the first frequency. In further aspects, pairs of phases of an AC power source are connected to pairs of phases of a motor in a first sequence. The motor is subsequently disconnected from the AC power source for a predetermined dwell interval having a duration greater than a time constant of the motor. The motor is braked using a second sequence that is reversed with respect to the first sequence.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: April 23, 2024
    Assignee: Eaton Intelligent Power Limited
    Inventor: Stan Rex Simms
  • Patent number: 11962219
    Abstract: A control system of a flexible permanent magnet brushless DC motor, comprising a DC power supply, a filter capacitor, a voltage source inverter, a permanent magnet brushless DC motor and a controller, wherein an output end of the DC power supply is connected with the filter capacitor in parallel; the voltage source inverter is provided with m bridge arms which are connected with both ends of the filter capacitor in parallel; upper and lower controllable switching devices are arranged on each bridge arm; the phase number of armature winding of the permanent magnet brushless DC motor is equal to the number of bridge arms; head ends of armature windings of each phase are correspondingly connected with intermediate contacts of the upper and lower controllable switching devices of one bridge arm, tail ends of armature windings of each phase are connected together.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: April 16, 2024
    Assignee: TIANGONG UNIVERSITY
    Inventors: Wei Chen, Lixiang Zhu, Tingna Shi, Changliang Xia
  • Patent number: 11961989
    Abstract: A control method for a fuel cell system, the fuel cell system including a hydrogen storage part and a fuel cell stack that generates electric power using hydrogen supplied from the hydrogen storage part, the fuel cell system being mounted on a towed portion of a moving body that includes the towed portion and a towing portion, the fuel cell system being electrically connected to the towing portion, the towing portion including a battery and a drive device performing driving in response to supply of electric power, the towed portion being towed by the towing portion, the control method includes: acquiring remaining amount information indicating a remaining amount of the battery, and starting supply of electric power to the towing portion when it is determined that the remaining amount of the battery is equal to or less than a threshold based on the remaining amount information.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: April 16, 2024
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yoshikazu Murakami, Shinji Matsunaga, Takashi Arai, Akiji Ando, Takashi Yanagiura, Kazunori Yamamoto
  • Patent number: 11955920
    Abstract: A method for controlling an electric motor including a mechanical commutator, includes determining points in time at which commutation takes place by a sensor or without a sensor. The method further includes controlling the electric motor by a supply voltage signal having a sequence of pulses. The method further includes modulating the supply voltage signal by a modulation signal to reduce the magnitude of the supply voltage signal at the commutation points in time.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 9, 2024
    Assignee: Elmos Semiconductor SE
    Inventor: Jörg Hartzsch
  • Patent number: 11949355
    Abstract: The present disclosure provides a vibrator driving method, including steps of: obtaining a preset vibration frequency and a resonant frequency of a target vibration motor; obtaining total harmonic distortion of the target vibration motor; obtaining at least one low distortion point of the target vibration motor according to the total harmonic distortion; obtaining a target vibration frequency according to a low distortion frequency of at least one low distortion point and the preset vibration frequency; driving the target vibration motor to vibrate according to the target vibration frequency. The present disclosure further provides a vibration driving system and a vibration driving equipment.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: April 2, 2024
    Assignee: AAC Acoustic Technologies (Shanghai)Co., Ltd.
    Inventors: Zheng Xiang, Xuan Guo
  • Patent number: 11945477
    Abstract: Provided is an electric dual-mode wiper system for a railway vehicle. The electric dual-mode wiper system for a railway vehicle includes a first wiper drive unit and a second wiper drive unit, and controls a synchronization operation of the first wiper drive unit and a second wiper drive unit.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: April 2, 2024
    Assignee: KOREA RAILROAD RESEARCH INSTITUTE
    Inventors: Yeon Su Kim, Sung Hyuk Park
  • Patent number: 11949361
    Abstract: The present invention relates to a variable speed drive for driving an electric motor and providing a safe torque off (STO) function. The drive includes two parallel signal buffers connected to a safety controller and at least one IGBT gate driver circuit, wherein the signal buffers share the same IGBT gate control signals as inputs and feed them to the same IGBT gate driver circuits and wherein each signal buffer has an own STO control signal for activation and deactivation of outputs. The invention is also directed at a method for diagnosing a corresponding drive.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: April 2, 2024
    Assignee: Vacon OY
    Inventor: Antti Samuli Keskinarkaus
  • Patent number: 11929651
    Abstract: An inverter integrated gas supply device includes a fluid machine configured to discharge air, an electric motor having a motor casing and configured to drive the fluid machine, an inverter having an inverter casing and configured to supply a drive current to the electric motor, a motor-side connection part attached to the motor casing and configured to receive the drive current, and an inverter-side connection part attached to the inverter casing, connected to the motor-side connection part. The motor-side connection part includes a motor-side connector housing, and a motor connector. The inverter-side connection part includes an inverter-side connector housing, and an inverter connector. A position of the motor connector relative to the motor-side connector housing is fixed; and a position of the inverter connector relative to the inverter-side connector housing is variable.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: March 12, 2024
    Inventors: Nobuyuki Ikeya, Yuji Sasaki, Masaya Taniguchi, Gen Kuwata, Satoru Ohashi
  • Patent number: 11923759
    Abstract: In a power conversion device for performing conversion from DC to AC, a positive-side capacitor and a negative-side capacitor with their connection point serving as a neutral point are provided between the positive and negative sides of the inputted DC power, and a switching pattern for specifying switching phases which are timings of ON/OFF driving switching elements of an inverter which outputs AC voltage having at least a positive-side potential, a negative-side potential, and a neutral point potential, is calculated so as to satisfy conditions for ensuring a modulation factor, eliminating harmonic components for respective orders of output voltage, ensuring a predetermined value for a phase difference between adjacent switching phases, and balancing voltage of the positive-side capacitor and voltage of the negative-side capacitor.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: March 5, 2024
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventors: Keiko Tada, Hiromitsu Suzuki
  • Patent number: 11923795
    Abstract: A method for operating a voltage source inverter is provided, the method including inducing, via the voltage source inverter, a DC current at a load device to obtain a load voltage value; determining an ideal switching-averaged voltage based on a switching modulation scheme; determining a combined semiconductor voltage drop and deadtime effect; and adjusting the switching modulation scheme such that a resulting ideal switching-averaged voltage is based on the combined semiconductor voltage drop and deadtime effect and the load voltage value.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: March 5, 2024
    Assignee: Haier US Appliance Solutions, Inc.
    Inventor: Joseph Wilson Latham
  • Patent number: 11876472
    Abstract: The disclosure includes a control system for a multi-phase electric machine that includes an inverter configured to transfer electric energy from a rechargeable energy storage device (RESS), and phase current sensors. A controller includes an executable instruction set to monitor, via the phase current sensors, the phase currents, and detect that one of the phase currents is outside a linear measurement range of a respective one of the phase current sensors. An extrapolated current for the respective one of the phase current sensors is determined based upon the phase currents from others of the phase current sensors. A current extrapolation routine evaluates the respective one of the phase current sensors. A fault is detected in the respective one of the phase current sensors based upon the current extrapolation routine and the extrapolated current.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: January 16, 2024
    Assignee: GM Global Technology Operations LLC
    Inventors: Brent S. Gagas, Brian A. Welchko
  • Patent number: 11868113
    Abstract: Provided is a servo amplifier system performing a multi-axis control for multiple axes, in which the multiple axes includes a first axis group which an axis to be locked, at the time of power supply abnormality in the multi-axis control, belongs to, and a second axis group which an axis to be subjected to servo-off belongs to, the servo-off being made before the axis belonging to the first axis group is locked at the time of the power supply abnormality.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: January 9, 2024
    Assignee: FUJI CORPORATION
    Inventor: Naohiro Kato
  • Patent number: 11855575
    Abstract: A step motor drive device includes a step motor including a rotor, stators, and a coil, a drive circuit that outputs a drive signal including a plurality of partial signals that are output intermittently, a detecting circuit that detects an electromagnetic induced current that is generated in the coil after the partial signals are output, and a control unit that controls the drive circuit. The drive circuit outputs one of the partial signals included in the drive signal to the coil, and, in response to a change in an electromagnetic induced current generated in the coil after the partial signal is output, outputs a next partial signal to the coil. The control unit determines a control method of the step motor based on an interval of the plurality of partial signals, and controls the drive circuit based on the determined control method.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: December 26, 2023
    Assignee: CITIZEN WATCH CO., LTD.
    Inventor: Yu Takyo
  • Patent number: 11851115
    Abstract: An electronic device may include: a power management integrated circuit (PMIC); and a micro controller unit (MCU) electrically connected to the PMIC. The MCU may be configured to: generate, based on a first driving power signal output from the PMIC to drive the MCU, a digital signal for determining an error in a reference signal of an analog-to-digital converter (ADC) included in the MCU; identify an error rate of the digital signal; and determine a mode for controlling a motor driven power steering system, based on the error rate of the digital signal.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: December 26, 2023
    Assignee: Hyundai Mobis Co., Ltd.
    Inventor: Tae Hee Lee
  • Patent number: 11848632
    Abstract: A linear motor system, which is in particular a transport system and, for example, a multi-carrier, comprises a guide track having a plurality of electromagnets arranged distributed along the guide track; at least one carrier that is guided by and movable along the guide track and that comprises a drive magnet for cooperating with the electromagnets of the guide track to move the carrier; and a control device for controlling the movement of the carrier relative to the guide track by a corresponding control of the electromagnets. The guide track has at least one stationary transmission device that is provided for supplying energy and that is located at a predetermined position. The carrier comprises a corresponding reception device, which is configured to receive energy from the transmission device of the guide track, and an energy consumer.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: December 19, 2023
    Assignee: Schneider Electric Industries SAS
    Inventor: Volker Muellerschoen
  • Patent number: 11843250
    Abstract: A method for operating a microgrid electric power generation system includes delivering energy to an electric power bus at least partially from one or more kinetic generators electrically coupled to the electric power bus, controlling the one or more kinetic generators in response to a change in a load such that a magnitude of a voltage on the electric power bus remains within a predetermined voltage range, and controlling one or more combustion generators electrically coupled to the electric power bus based at least in part on an operating state of the one or more kinetic generators. The one or more kinetic generators are capable of (a) delivering energy stored therein to the electric power bus, and (b) storing energy in kinetic form.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: December 12, 2023
    Assignee: WattsUp Power A/S
    Inventors: John Røn Pedersen, Martin Speiermann