Patents Examined by Jorge L Carrasquillo
  • Patent number: 11699967
    Abstract: An electric machine disposed within a housing includes a stator, a rotor, and one or more point field detectors. The stator receives current from an inverter. The rotor is connected to and rotating a shaft based on a magnetic field generated by the stator. The one or more point field detectors are configured to detect leakage flux within the housing. The stator, the rotor and the one or more point field detectors are disposed within the housing.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: July 11, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Muhammad H. Alvi, Alireza Fatemi, Suresh Gopalakrishnan, Chandra S. Namuduri
  • Patent number: 11699969
    Abstract: A compressor and a control method thereof are provided. The compressor includes a motor with a rotor of a permanent magnet. According to embodiments, the method of controlling the compressor includes: applying a detection current to the motor in response to a command of starting the compressor; detecting whether there is demagnetization of the permanent magnet of the rotor according to a response of the motor to the applied detection current; resetting an operating parameter of the compressor if there is the demagnetization; and starting the compressor according to the reset operating parameters. According to embodiments of the present disclosure, when the compressor is to be started, demagnetization is detected first, and the operating parameter are set accordingly, so as to suppress or avoid performance degeneration due to the demagnetization.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: July 11, 2023
    Assignee: Danfoss (Tianjin) Ltd.
    Inventors: Shizhong Ji, Li Yao, Wanzhen Liu
  • Patent number: 11697220
    Abstract: Apparatus, systems, and processes control an electric motor to drive a hoop onto a wooden barrel, among other purposes. A controller may be connected to the electric motor and configured to receive user input data and generate one or more control signals for the electric motor that correspond to a torque generation of the electric motor and/or a rotation speed of the electric motor. A barrel hoop driver may comprise the controller and electric motor, where the electric motor drives a press member for driving hoops onto wooden barrels.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: July 11, 2023
    Inventors: Ericus Andreas Van Kleef, James C. Alley, Robert Scott Feldmeier
  • Patent number: 11695356
    Abstract: The present disclosure relates to systems and methods for controlling the operation of a motor actuator for positioning a moveable element. Operational characteristics of the movable element over its operational range are determined. A first PWM signal to control the actuator over a first portion of the operational range of the movable element is generated. A second PWM signal to control the actuator over a second portion of the operational range of the movable element is generated. The first PWM signal is based on a linear transfer function having a first gain level and the second PWM signal is based on a linear transfer function having a second gain level. An output position of the moveable element is executed based the first PWM signal or the second PWM signal.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: July 4, 2023
    Assignee: Ford Global Technologies, LLC
    Inventor: Mike Robert Garrard
  • Patent number: 11695365
    Abstract: The invention relates to a method for the external monitoring of a converter (10), the converter (10) being controlled by means of a first electronic control system (12) and the method being implemented by means of a second electronic control system (14) which is independent from the first electronic control system (12). Said method comprises detection (S1) of a current (I) received by the converter (10) and a voltage (U) received by the converter (10) by means of a current/voltage sensor device (16) which is independent from the first electronic control system (12). The invention also relates to a device for monitoring a converter (10), to a computer program product, to a machine-readable storage medium, to a drive train of a motor vehicle, and to a corresponding motor vehicle.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: July 4, 2023
    Assignee: Robert Bosch GmbH
    Inventor: Johannes Schild
  • Patent number: 11689125
    Abstract: A DC electric motor having a stator mounted to a substrate, the stator having a coil assembly having a magnetic core, a rotor mounted to the stator with permanent magnets distributed radially about the rotor, the permanent magnets extending beyond the magnetic core, and sensors mounted to the substrate adjacent the permanent magnets. During operation of the motor passage of the permanent magnets over the sensors produces a substantially sinusoidal signal of varying voltage substantially without noise and/or saturation, allowing an angular position of the rotor relative the substrate to be determined from linear portions of the sinusoidal signal without requiring use of an encoder or position sensors and without requiring noise-reduction or filtering of the signal.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: June 27, 2023
    Assignee: Cepheid
    Inventors: Tien Phan, Doug Dority
  • Patent number: 11682988
    Abstract: A method is described for controlling an electric motor having a rotor. The method is carried out after a shutdown of the motor has been initiated. The method includes starting a timer in a motor controller, performing regenerative braking to recapture kinetic energy from the rotor as electrical energy, and using the recaptured electrical energy from the regenerative braking to power the motor controller. If the timer in the motor controller exceeds a predetermined timer value, a flag is set in memory in the motor controller to indicate that the motor has stopped.
    Type: Grant
    Filed: March 2, 2022
    Date of Patent: June 20, 2023
    Assignee: Dyson Technology Limited
    Inventors: Libo Zheng, Min Zhang
  • Patent number: 11671036
    Abstract: A BLDC motor system is provided, which includes a motor provided with a stator forming a tubular space in which a center shaft exists and having an inner side for the center shaft, on which a plurality of coil units generating a magnetic field are formed, and a rotor located in the tubular space and having fixed magnet units arranged on an outer side for the center shaft, a skew having a predetermined slope against the center shaft being formed on a boundary between one of the fixed magnet units and the adjacent fixed magnet unit; and a driving module provided with a driving circuit supplying a power for driving the motor to the coil units, and a controller rotating the rotor by switching the driving circuit and performing switching so that the power being supplied from the driving circuit to the coil units forms a sine wave.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: June 6, 2023
    Assignee: DAS CO., LTD.
    Inventors: Kwang Sin Lee, In Ho Jo
  • Patent number: 11671044
    Abstract: A stator of a rotating electrical machine has a slot-less structure. The rotating electrical machine includes a controller. The controller determines a value of a q-axis command current in accordance with requirement information and an input command value for a controlled variable of the rotating electrical machine. The requirement information includes a relationship between values of the q-axis command current and corresponding command values for the controlled variable. The controller performs a task of correcting the value of the q-axis command current to thereby restrict temperature change in a magnet unit from having an influence on the relationship between the command values for the controlled variable and the corresponding values of the q-axis command current. The controller controls an inverter to thereby adjust a value of the q-axis current flowing through an armature winding member to the corrected value of the q-axis command current.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: June 6, 2023
    Assignee: DENSO CORPORATION
    Inventor: Yuki Takahashi
  • Patent number: 11654991
    Abstract: The invention relates to a method for deterring theft of a vehicle having a three-phase electric motor without a freewheel (10), comprising the steps of using the motor in a generator mode to power a motor control circuit (14) in an initial phase of rotating the motor through motion of the vehicle; and, when the power supply level of the control circuit reaches a first threshold (Vmin), connecting by the control circuit first and second phases (b, c) of the three-phase motor continuously to a first power supply line (Vss), whereby the first and second phases are short-circuited and cause an increased braking force of the motor. During this time, the third phase of the motor may be connected to continue to supply energy to the control circuit.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: May 23, 2023
    Assignee: EBIKELABS
    Inventors: Theophile Alary, Maël Bosson, Raphaël Marguet
  • Patent number: 11658591
    Abstract: A motor controller is configured to stabilize the motor current. The motor controller is used for driving a motor. The motor controller comprises a switch circuit, a control unit, and a phase detecting unit. The phase detecting unit generates a phase signal to the control unit for switching phases. The phase signal sequentially generates a first, second, third, fourth, fifth and sixth time interval. The first to sixth time intervals correspond to first to sixth phases, respectively. The motor controller further comprises a first driving time for driving the motor in the fifth phase, where the first driving time is related to the first time interval. The motor controller further comprises a second driving time for driving the motor in the sixth phase, where the second driving time is related to the second time interval.
    Type: Grant
    Filed: November 26, 2020
    Date of Patent: May 23, 2023
    Assignee: Global Mixed-mode Technology Inc.
    Inventor: Chien-Lun Chu
  • Patent number: 11639170
    Abstract: A motor-driven vehicle includes: a motor for traveling; an inverter that drives the motor; and a controller configured to perform automatic parking control for parking the motor-driven vehicle at a target parking position without depending on a user's vehicle operation, and prohibit or stop the automatic parking control when a load limitation ratio is less than a threshold value, the load limitation ratio indicating a limitation level of a torque which is able to be output from the motor in response to a required torque for the motor.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: May 2, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Suguru Kumazawa
  • Patent number: 11626819
    Abstract: A motor control system shorts motor windings of a motor by using junction gate field-effect transistors (JFETs) controlled bipolar junction transistors (BJTs), solid state relays (SSRs) controlled BJTs, and depletion mode metal-oxide-semiconductor field-effect transistors (MOSFETs) so that the motor generates braking torque when all or some electric control units of the motor are disabled or failed. The motor control system comprises: a motor comprising a plurality of motor phase terminals; a plurality of electric control units electrically connected with the motor and configured to control the motor, wherein the electric control units are configured to output control signals, respectively; and a shorting circuit connected to between the motor and the electric control units, the shorting circuit configured to short the motor phase terminals in response to receiving none of the control signals from the electric control units.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: April 11, 2023
    Assignee: HL MANDO CORPORATION
    Inventors: Shakil Hossain, Lucas Ritter, Awab Ali, Tomy Sebastian, Kade Hudson
  • Patent number: 11613444
    Abstract: A power management system comprises an AC-power-source controller configured to control power supply between the AC power source and a common DC bus, the AC-power-source controller further configured to limit AC power supplied from the AC power source to the common DC bus to a first AC-power-source power limit; a power inverter configured to invert the DC power on the common DC bus into AC output power for driving the electric motor; a DC power source configured to supply DC power to the common DC bus; and a DC-power-source controller configured to control power supply between the DC power source and the common DC bus, the DC-power-source controller further configured to start supplying DC power from the DC power source to the common DC bus in response to a detection of a voltage drop on the common DC bus from a AC-power-source reference voltage to a DC-power-source reference voltage.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: March 28, 2023
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Virgilio Valdivia Guerrero, Ismail Agirman, Daniel Diaz-Lopez, Mario Sanz Abia, Herbert Horbrugger, Stephan Glessner
  • Patent number: 11611298
    Abstract: A motor device 100 includes an SPM motor 1 that includes a stator 2 including an iron core 21 and a plurality of windings 23 wound on the iron core 21, and a rotor 3 which is rotatable with respect to a rotation axis and in which a plurality of permanent magnets 33 are mounted along a circumferential direction to form a plurality of magnetic poles in the circumferential direction; and a power supply unit 5 that supplies a current to the plurality of windings 23 of the SPM motor 1. Each of the plurality of magnetic poles is oriented such that directions of axes of easy magnetization are concentrated toward a stator side, and the current supplied from the power supply unit is a trapezoidal wave.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: March 21, 2023
    Assignee: TDK Corporation
    Inventors: Nobuyuki Shimbo, Koji Mitake
  • Patent number: 11606058
    Abstract: Disclosed is a motor, a control method, a power system, and an electric vehicle. Each phase stator winding of the motor includes two sub-winding sets. When a traction battery needs to be heated, the two sub-winding sets of the motor store electrical energy and provide alternating currents to the traction battery through an inverter, so that the traction battery uses its internal resistance for heating. In addition, the two sub-winding sets generate opposite magnetic fields which cancel each other out, so that the strength of the magnetic field inside each phase stator winding and the air gap magnetic flux are reduced, thereby alleviating the heat generation and NVH problems of the motor.
    Type: Grant
    Filed: August 1, 2022
    Date of Patent: March 14, 2023
    Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
    Inventors: Xiaojian Huang, Zhimin Dan, Bao Li, Xiyang Zuo
  • Patent number: 11591009
    Abstract: Technical solutions are described for controlling operation of an electric machine such as a permanent magnet synchronous motor (PMSM) drive or motor control system to protect against excessive machine current or voltage in a PMSM drive. Systems and methods employ a torque control algorithm for PMSMs that uses the constraints of both machine current and voltage capability in PMSM drives, and online torque command modification according to the maximum allowed torque under these machine current and voltage constraints.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: February 28, 2023
    Assignee: Steering Solutions IP Holding Corporation
    Inventors: Haibo Li, Prerit Pramod, Krishna M P K Namburi, Zhe Zhang
  • Patent number: 11594992
    Abstract: A motor control device includes a table in which a motor torque generated from a reluctance torque utilizing motor is stored with respect to a combination of an armature current command value and a current phase angle command value at which the motor torque is maximized for the armature current command value, a first setting portion that sets a motor torque command value that is a command value of a motor torque to be generated by the reluctance torque utilizing motor, and a second setting portion that sets, based on the table, an armature current command value and a current phase angle command value for making a motor torque that is in accordance with the motor torque command value set by the first setting portion be generated from the reluctance torque utilizing motor.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: February 28, 2023
    Assignee: JTEKT CORPORATION
    Inventor: Yuta Iwai
  • Patent number: 11569792
    Abstract: Systems and methods of the present disclosure enable drive filtering with reduced common mode and differential mode harmonics using a drive filter including, common-differential mode inductors connected to an alternating current (AC) power source, where each common-differential mode inductor has a common mode inductance and a differential mode inductance. A differential mode capacitor is connected to each common-differential mode inductors for filtering the differential mode inductances. A first common mode capacitor is connected to each common-differential mode inductor for filtering the common mode inductances, where each first common mode capacitor are commonly connected. A second common mode capacitor is connected to each common-differential mode inductor for filtering the common mode inductances, where each second common mode capacitor are commonly connected. Output contacts are connected to the common-differential mode inductors to connect a load to the AC power source.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: January 31, 2023
    Assignee: MTE Corporation
    Inventors: Tin Luu, Todd Shudarek
  • Patent number: 11558003
    Abstract: The invention relates to a method and device for operating an electric machine (10) for outputting a predefined torque and a predefined rotational speed, comprising the following steps: providing (420) a first and a second operating mode for the operation of the electric machine (10); detecting (430) a temperature of the electric machine (10); and operating the electric machine (10) in the first operating mode (440) if the detected temperature falls below a threshold value, and operating the electric machine (10) in the second operating mode (450) if the detected temperature corresponds with the threshold value or exceeds same.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: January 17, 2023
    Assignee: Robert Bosch GmbH
    Inventors: Alexander Rosen, Michael Bangerter