Patents Examined by Jorge L Carrasquillo
  • Patent number: 11855520
    Abstract: An electric tool includes a motor and a motor control device. The motor control device is configured to update a command value of a speed of the motor based on a parameter relating to at least one of a voltage of a direct-current power supply for the motor or a magnitude of a load applied to the motor during rotation of the motor.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: December 26, 2023
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Fumiiki Yoneda
  • Patent number: 11851936
    Abstract: In one aspect of the present disclosure, a movable barrier operator system is provided that includes a motor configured to turn a drum to pay out a cable from the drum and permit a door connected to the cable to move from an open position toward a closed position. The system includes a memory configured to store an expected variable of the door, and a sensor configured to detect movement of the door. The system further includes a processor circuit operatively coupled to the motor, the memory, and the sensor. The processor circuit is configured to: use the sensor to estimate an actual variable of the door; determine whether the actual variable is acceptable based at least in part on the expected variable and the processor circuit causing the motor to turn the drum; and change operation of the movable barrier upon the actual variable of the movable barrier being unacceptable.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: December 26, 2023
    Assignee: The Chamberlain Group LLC
    Inventors: Casparus Cate, James Joseph Fitzgibbon, Thomas J. Grinter, Anders K. Melberg, Robert John Olmsted
  • Patent number: 11848633
    Abstract: To provide a controller for AC rotary electric machine which can compensate error of the actual on-duty with respect to the command on-duty calculated from command voltage with good accuracy, with a simple circuit configuration. A controller for AC rotary electric machine detects an actual on-duty of the switching device based on the detection value of the midpoint potential which is the potential of the connection node of the series connection in the series circuit; calculates an on-duty error based on the difference between the command on-duty and the actual on-duty; and corrects the voltage command or the command on-duty based on the on-duty error.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: December 19, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shingo Harada, Keiichi Enoki, Nozomu Kamioka, Tomohisa Shoda, Yoshimasa Nishijima, Kazuhiko Otsuka
  • Patent number: 11843345
    Abstract: A method for monitoring a motor unit is provided. The method includes: detecting a starting rotor position: ascertaining a non-safety-critical position tolerance range; ascertaining a position offset for the rotor as a function of the ascertained position tolerance range; ascertaining a target rotor position for the rotor based on the starting rotor position and the position offset; specifying a target control pattern based on the ascertained target rotor position; generating and applying a motor control pattern to the motor unit to rotate the rotor to the specified target rotor position using the target control pattern; detecting an actual control pattern controlling the motor unit at an interface between the motor controller and the motor unit; detecting an actual rotor position resulting from the rotation of the rotor using the motor control pattern; and feeding back both the detected actual control pattern and the detected actual rotor position for verification thereof.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: December 12, 2023
    Assignee: Vitesco Technolgies GmbH
    Inventors: Edgar Jerichow, Michael Winkler
  • Patent number: 11843333
    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: December 12, 2023
    Assignee: DENSO CORPORATION
    Inventor: Yuki Takahashi
  • Patent number: 11843344
    Abstract: A brushless DC electric (BLDC) motor driver circuit includes: a power stage circuit configured to operably drive a brushless DC electric (BLDC) motor according to a pulse width modulation (PWM) signal; and an abnormality diagnosis circuit, wherein when a first parameter is under control, the abnormality diagnosis circuit is configured to operably determine a rotation abnormality condition of the BLDC motor according to a second parameter; wherein the first parameter and the second parameter are correlated with the rotation of the BLDC motor.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: December 12, 2023
    Assignee: RICHTEK TECHNOLOGY CORPORATIION
    Inventor: Wei-Hsu Chang
  • Patent number: 11843332
    Abstract: A control device for an electric motor includes a control circuit that controls an operation of an inverter circuit on the basis of a voltage command value corresponding to a difference between a current command value calculated on the basis of the position of a rotor of the electric motor, and a current flowing through the electric motor. A current estimation unit estimates the current flowing through the electric motor by substituting the voltage command value, a parameter unique to the electric motor, and a rotational speed calculated on the basis of the position of the rotor into a voltage equation serving as a model of the electric motor. An LR estimation unit estimates an inductance and a resistance of the electric motor serving as parameters on the basis of the difference between the current obtained by a current acquisition unit and the current estimated by the current estimation unit.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: December 12, 2023
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Keigo Nomura, Daisuke Matsuoka, Masamichi Nawa
  • Patent number: 11840431
    Abstract: A winch control system having a solid state winch contactor and a boost power supply for a vehicle equipped with an electric winch and especially for off-road vehicles, is disclosed. This invention automatically provides three winch speeds: a “slow start” (“creep”) speed for “parking” the hook and for “sneaking” up on a load, a normal speed for normal winch operation and a fast speed for taking less time to unwind and rewind the winch rope when there is no load on the winch. Protection features for the winch contactor and/or the winch include, but are not limited to, electronic winch motor braking, current limiting, over temperature, undervoltage and reverse battery. Winch current limiting is adjustable from 100 amps to 300 amps, chosen for the purpose of accommodating various winch sizes.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: December 12, 2023
    Assignee: MotoAlliance
    Inventors: Jimmie Doyle Felps, Scott Charles Heupel
  • Patent number: 11843313
    Abstract: There is described a method of controlling an inverter supplying power to a permanent magnet AC, PMAC, motor having a plurality of phase windings, The method comprises: selecting a first phase winding of the PMAC motor; electrically connecting the first phase winding to a first DC terminal of a DC link circuit at a first time, and maintaining the connection between the first phase winding and the first DC terminal: determining a flux difference between the first phase winding and a second phase winding of the PMAC motor; selecting a second time to electrically connect the second phase winding to the first DC terminal; electrically connecting the second phase winding to the first DC terminal at the second time; and maintaining the connection between the second phase winding and the first DC terminal. The second time is selected based on the determined flux difference.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: December 12, 2023
    Assignee: BorgWarner Gateshead Limited
    Inventors: Ken Thompson, Jolene Zhou, Jack Dunn
  • Patent number: 11837984
    Abstract: A system for an inverter includes a first integrated circuit configured to: provide power to a first set of switches, and selectively control the first set of switches and a second set of switches; a second integrated circuit configured to provide power to the second set of switches; and an electric motor being connected to the first set of switches and the second set of switches, wherein, the second integrated circuit is further configured to: in response to an a fault detected in the first integrated circuit, selectively control the first set of switches and the second set of switches, and, in response to at least one voltage value corresponding to a voltage of the first set of switches being outside of a threshold, performing a safe state operation.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: December 5, 2023
    Assignee: Delphi Technologies IP Limited
    Inventors: Mark W. Gose, Mitchell Cohen, Tushar Nachnani, Christopher Klaus
  • Patent number: 11831195
    Abstract: A generator set for generating an alternating current, includes a primary power unit, an alternating current generator, and a secondary power unit. The alternating current generator is rotationally coupled to the primary power unit, and converts power provided by the primary power unit into an electric power. The secondary power unit is connectable to the alternating current generator so as to increase the power generated by the alternating current generator.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: November 28, 2023
    Assignee: Torqeedo GmbH
    Inventor: Jens Biebach
  • Patent number: 11817802
    Abstract: A vector control method and system of a permanent magnet motor (PMM) comprising a step of counting parameters of components of a power cable line (channel) (PCL), between the PMM and a regulated voltage source (RVS), wherein counting at least parameters of an inductance, a resistance and a capacitance of elements of the PCL. Providing voltage sag compensation mode by controlling the RVS DC-link voltage parameter using a voltage sag control unit, and controlling the PMM frequency parameter by changing current and/or voltage PMM parameters counting changes in the RVS DC-link voltage parameter and a nominal power parameter of the PMM.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: November 14, 2023
    Inventor: Dmytro Khachaturov
  • Patent number: 11791759
    Abstract: A variable speed drive includes an output terminal for delivering a drive voltage; a power inverter for generating the drive voltage; a drive controller for controlling the generation of the drive voltage; and a current sensor for providing a drive current intensity signal to the drive controller. The drive controller includes a PWM generator; a control law module; and a state variable estimator estimating a state variable of the controlled AC electric motor.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: October 17, 2023
    Assignee: Schneider Toshiba Inverter Europe SAS
    Inventors: Pascal Combes, Dilshad Surroop, Philippe Martin, Pierre Rouchon
  • Patent number: 11760210
    Abstract: Methods and systems are provided for modulating undesired electric-motor braking. Based upon the detection of an inverter degradation event, one of a first gate driver and a second gate driver (e.g., a high gate driver and a low gate driver, such as for one phase of an inverter) may be asserted in an alternating manner while the other of the first gate driver and a second gate driver is de-asserted, and the first gate driver and second gate driver may then be provided to a power switch circuitry. The alternating assertion of the one of the first gate driver and the second gate driver may be associated with a higher-speed state, and the de-assertion of both the first gate driver and the second gate driver may be associated with a lower-speed state.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: September 19, 2023
    Assignee: DANA TM4 INC.
    Inventors: Charles Obry, Maalainine El Yacoubi
  • Patent number: 11757390
    Abstract: A motor inductance measurement device comprises an energization control circuitry to perform energization control of the motor such that an AC voltage is applied to at least one axis on two-axis orthogonal rotation coordinates of the motor to cause the AC current to flow, and an inductance calculation circuitry to generate the characteristic regarding the instantaneous value of the AC magnetic flux corresponding to the instantaneous value of the AC current as the inductance information by calculating the instantaneous value of the AC magnetic flux by integrating a residual voltage which is obtained by subtracting a resistance voltage from the AC voltage, the resistance voltage being obtained from the AC current based on a detection current detected from the motor, and from resistances of the motor.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: September 12, 2023
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shinichi Furutani, Shoji Adachi
  • Patent number: 11750142
    Abstract: A system includes one or more electric motors, this system comprising a set of at least one load and an inverter comprising transistors, the inverter being intended to convert a DC voltage into an AC voltage that is intended to electrically power the set of at least one load, the inverter being able to be in a set of states comprising a nominal regime and a transitory regime wherein the set of at least one load draws, from the inverter, a power higher than a maximum power drawn from the inverter when the inverter is in nominal regime, the electrical-energy-converting system comprising means for cooling the transistors comprising a holder that is joined to at least one of the transistors of the inverter, the holder comprising a phase-change material that is able to melt, the system comprising one or more electric motors being configured so that, at a preset ambient temperature, the phase-change material melts when the inverter is in the transitory regime and so that, at this ambient temperature, the phase-chan
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: September 5, 2023
    Assignee: THALES
    Inventors: Taoufik Bensalah, Joël Lallier, Maxime Migneau, Damien Peyrat
  • Patent number: 11742727
    Abstract: Disclosed is a method for determining a rotor temperature value TRot for an electric machine, such as an electric motor. In one example, the method includes calculating a support value Pcu2_Trot using a rotor temperature value Trot that is determined with a temperature model and a motor current value Isdq. An auxiliary value Pcu2_Ref can be determined using a motor torque Trq and a motor slip value ?slip. The support value Pcu2_Trot can be linked with the auxiliary value Pcu2_Ref in order to obtain a corrected rotor temperature value DeltaTrot. Furthermore, the temperature model can be modified using the corrected rotor temperature value DeltaTrot in order to obtain a corrected temperature model. Finally, the rotor temperature value TRot can be determined using the corrected temperature model.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: August 29, 2023
    Assignee: ZF Friedrichshafen AG
    Inventors: Franz Prenner, Oussama Jabloun
  • Patent number: 11715998
    Abstract: A geared motor is provided, including an electric motor, a transmission, a drive shaft and a switching device arranged on the drive shaft. The switching device includes a single housing that is distinct and separate from an electric motor housing and a transmission housing. The switching device also includes a contactless, absolute position-measuring device and an evaluation unit, each provided within the single housing, a gear wheel coupled to the drive shaft, and an output unit. The switching device is coupled to the position-measuring device by a pinion, which rotates about the same rotational axis as the drive shaft.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: August 1, 2023
    Assignee: Lock Antriebstechnik GmbH
    Inventors: Frank Lock, Patrick Niederer, Tobias Fluhr
  • Patent number: 11716040
    Abstract: Controllers for controlling hybrid motor drive circuits configured to drive a motor are provided herein. A controller is configured to drive the motor using an inverter when a motor commanded frequency is not within a predetermined range of line input power frequencies, and couple line input power to an output of the inverter using a first switch device when the motor commanded frequency is within the predetermined range of line input power frequencies.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: August 1, 2023
    Assignee: Regal Beloit America, Inc.
    Inventors: Ludovic Andre Chretien, Roger Carlos Becerra, Kamron Mark Wright, Lester Benjamin Manz
  • Patent number: 11712967
    Abstract: Various disclosed embodiments include illustrative controllers, dual power inverter modules, and electric vehicles. In an illustrative embodiment, a controller includes one or more processors associated with a first and second power inverter for the drive unit. Computer-readable media for the one or more processors are each configured to store computer-executable instructions configured to cause the one or more processors to apply a same fault action to the first power inverter and the second power inverter responsive to a fault associated with an inverter chosen from the first power inverter and the second power inverter, wherein the same fault action includes applying equalized torque to each axle operatively coupled to the drive unit.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: August 1, 2023
    Assignee: Rivian IP Holdings, LLC
    Inventors: Richard M. Breese, Brian N. Harries, Silva Hiti, Daniel L. Kowalewski, Steven E. Schulz, David Tang