Patents Examined by Jorge L Carrasquillo
  • Patent number: 12015361
    Abstract: A motor control device includes: a step-down device including a DC-output power conversion device having a first mode for outputting first voltage and a second mode for outputting second voltage lower than the first voltage; a power supply device; and a control device, and controls a motor. When a flying object takes off, the control device controls the power conversion device in the first mode. When the control device judges that flight information which is one or both of information of a motor parameter obtained along with control for the motor and information of an environmental factor relevant to the flight altitude of satisfies a predetermined condition, or when the control device has received an mode signal for which the second mode is selected on the basis of the flight information during control for the motor, the control device controls the power conversion device in the second mode.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: June 18, 2024
    Assignees: MITSUBISHI ELECTRIC CORPORATION, JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Kenji Fujiwara, Hisatoshi Fukumoto, Tomoki Takegami, Tetsuya Kojima, Akihiko Iwata, Masahiro Sugahara, Hiroshi Kobayashi, Mari Nishiyama, Akira Nishizawa
  • Patent number: 12009715
    Abstract: A method includes: selectively actuating switches of an inverter module and first, second, third, and fourth switches of a motor; and charging a battery with power from a charger using at least one of first, second, and third stator windings of the motor, the battery having a first voltage and being electrically connected in parallel with the inverter module, and the charger having a second voltage that is less than the first voltage.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: June 11, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Rashmi Prasad, Chandra S. Namuduri, Lei Hao, Suresh Gopalakrishnan
  • Patent number: 12009767
    Abstract: A motor control device for controlling a brushless motor including a rotor and a three-phase armature coil includes: a position detection unit which detects the rotational position of the rotor; a control unit which outputs, in a first control mode or a second control mode, a first drive signal or a second drive signal to an inverter at a current-supply timing based on the rotational position of the rotor; and the inverter which outputs a first current-supply signal or a second current-supply signal to the three-phase armature coil when the first drive signal or the second drive signal is input. For any two of the three phases, a duty value when the duty of the applied voltages is the same is larger in the second control mode than in the first control mode.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: June 11, 2024
    Assignee: MITSUBA Corporation
    Inventors: Ryo Ohori, Naoki Shioda, Masaki Hayata, Takashi Yatsuda, Atsushi Kawasaki
  • Patent number: 11994328
    Abstract: An electric control assembly for an air conditioner is provided. The assembly has an electric control board, a fan driving circuit and a compressor driving circuit. A ground end of the fan driving circuit and a ground end of the compressor driving circuit are connected with two reference grounds of the electric control board in one-to-one correspondence. The assembly also has a switch isolation driving circuit, a first input end of which is connected with a control end of the compressor driving circuit. A first output end of the switch isolation driving circuit is connected with a controlled end of the fan driving circuit. A second input end of the switch isolation driving circuit is connected with a control end of the fan driving circuit. A second output end of the switch isolation driving circuit is connected with a feedback end of the compressor driving circuit.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: May 28, 2024
    Assignee: GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD.
    Inventors: Jianning Yang, Wenkai Zhang, Wenjie Yi
  • Patent number: 11984837
    Abstract: A method for determining an angular position of a rotating component is disclosed. A sensor system is positioned at a radial distance from an axis of rotation of the rotating component. A magnetic ring is arranged fixedly and concentrically on the rotating component, generating a magnetic field that changes with respect to the sensor system. The sensor system detects the magnetic field in which a signal is captured and evaluated with respect to the angular position. Errors in the measurement of the angular position can be corrected. The signal captured by the sensor system is evaluated with respect to the amplitude information of the magnetic field. A correction parameter is determined from the amplitude information, and an angle error is of the angular position is determined based on the correction parameter. The angle error is used to correct the angular position.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: May 14, 2024
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Jie Zhou, Wai-Wai Buchet, Paul Walden
  • Patent number: 11955918
    Abstract: A motor driver having a startup adjusting mechanism is provided. A steady-state detector circuit detects data for driving a motor to stably rotate to output a steady-state detected signal. A startup waveform pattern circuit selects one of a plurality of startup waveform patterns to output a startup waveform pattern signal according to the steady-state detected signal. A startup waveform generator circuit outputs a startup waveform signal according to the startup waveform pattern signal. A motor controlling circuit controls a motor driving circuit to start up the motor according to the startup waveform signal.
    Type: Grant
    Filed: July 7, 2022
    Date of Patent: April 9, 2024
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventor: Ming-Jung Tsai
  • Patent number: 11946307
    Abstract: A control arrangement for an entrance system has one or more movable door members and an automatic door operator for causing movements of the one or more movable door members between closed and open positions. The door members comprise one or more swing doors. The control arrangement comprises a controller and a plurality of sensors. Each sensor is connected to the controller and is configured to monitor a respective zone at the entrance system for presence or activity of a person or object. Each sensor has an active mode and an inactive mode, wherein the sensor consumes no electric power in the inactive mode or substantially less electric power in the inactive mode than in the active mode. The controller is configured to determine a current operational state of the entrance system among a plurality of possible operational states, and selectively cause at least one of the sensors to be in its active mode or in its inactive mode depending on the determined current operational state of the entrance system.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: April 2, 2024
    Assignee: Assa Abloy Entrance Systems AB
    Inventor: Roger Dreyer
  • Patent number: 11949356
    Abstract: A motor vibration control method and an electronic device can implement vibration of a motor when a loading capability of a battery is low. A battery status is obtained when a first motor vibration waveform vibration request is received. The battery status includes a battery temperature, a battery temperature and a battery level, or a battery power supply capability. A motor vibration parameter is switched if the battery status meets a preset condition, where the preset condition is that the battery power supply capability is lower than a first threshold, the battery temperature is lower than a second threshold, or the battery temperature and the battery level are lower than a third threshold array. The motor vibration parameter includes a motor vibration waveform or a motor vibration input voltage. The motor is driven to vibrate based on a switched motor vibration parameter.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: April 2, 2024
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Tingmin Zha, Bowen Chen, Chunjiang Zhao
  • Patent number: 11949354
    Abstract: A system comprising a synchronous three-phase electric motor and a controller is provided. The synchronous three-phase electric motor comprises a rotor, a stator, a plurality of coils, and a plurality of switching devices. The plurality of coils formed from conductive windings each wound around one or more of a plurality of stator teeth of the stator. The plurality of coils comprises a plurality of permanent coils and a plurality of bypass coils. The plurality of switching devices configured to selectively switch between a tapped position and a primary position. The controller is configured to provide a first switching command to the plurality of switching devices to switch from the primary position to the tapped position based on a transition signal. The transition signal is based on comparing an electrical characteristic associated with one or more input currents to the plurality of switching devices with a threshold value.
    Type: Grant
    Filed: February 7, 2022
    Date of Patent: April 2, 2024
    Assignee: ABB Schweiz AG
    Inventors: Frederick L. Hoadley, Hoat V. Phung, Timothy S. Collins, Robert F. McElveen, Jr.
  • Patent number: 11942888
    Abstract: A power tool includes a power a motor, a driver circuit, a capacitor, a capacitor switch, a temperature detection unit, and a controller. The capacitor is configured to filter out current spikes in a power supply. The capacitor switch is configured to control a working state of the capacitor. The temperature detection unit is configured to detect a temperature of a related object. The controller is configured to: acquire the temperature of the related object; control the capacitor switch to be in a first on or off state such that the capacitor works in a first working state when the temperature is lower than a temperature threshold; and control the capacitor switch to be in a second on or off state such that the capacitor works in a second working state when the temperature is higher than the temperature threshold.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: March 26, 2024
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Jifeng Feng, Chao Xian
  • Patent number: 11940194
    Abstract: A power converting apparatus includes: a rectifying unit configured to rectify an input AC power, a buck converter that is configured to step down a voltage of the rectified power and that is configured to output DC power having the step down voltage, a first inverter that is connected to an output terminal of the buck converter and that is configured to convert the DC power into AC power to drive a first motor, a second inverter that is connected to the output terminal of the buck converter, that is disposed in parallel to the first inverter, and that is configured to convert the DC power into AC power to drive a second motor, and a converter controller configured to control an output voltage of the DC power of the buck converter.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: March 26, 2024
    Assignee: LG Electronics Inc.
    Inventors: Jinho Cho, Taeyoung Park, Jongwon Heo
  • Patent number: 11936311
    Abstract: To provide a controller for motor which can reduce a torque ripple up to high frequency, without amplifying unnecessary noise and vibration. A controller for motor estimates an interlinkage flux based on the applied voltage and the detection value of current; estimates an output torque based on the detection value of current and the estimation value of interlinkage flux; extracts a pulsation component from the estimation value of output torque; calculates a voltage command correction value based on the extraction value of pulsation component; calculates a voltage command after superimposing by superimposing the voltage command correction value on the voltage command basic value; and applies voltage to winding based on the voltage command after superimposing.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: March 19, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Isao Kezobo, Masahiko Orii, Tatsuya Mori, Seiji Sawada, Kenta Kubo
  • Patent number: 11936326
    Abstract: A motor controller comprises a switch circuit, a control unit, and a duty cycle processing unit. The switch circuit is coupled to a motor for driving the motor. The control unit is configured to generate a plurality of control signals to control the switch circuit. The duty cycle processing unit receives a first pulse width modulation signal, where the first pulse width modulation has a first duty cycle. The duty cycle processing unit is configured to judge if the first duty cycle is equal to 0% or 100%. The duty cycle processing unit comprises a duty cycle computing unit, where the duty cycle computing unit is configured to capture the first duty cycle.
    Type: Grant
    Filed: August 5, 2021
    Date of Patent: March 19, 2024
    Assignee: Global Mixed-mode Technology Inc.
    Inventor: Chia-Tai Yang
  • Patent number: 11936319
    Abstract: A current control circuit for controlling a drive current supplied to an inductive load is provided. The current control circuit is configured to perform a first mode of controlling a duty of the drive current so as to be 100% until a current value of the drive current reaches a first target current value after a supply of the drive current is started, and a second mode of controlling the duty of the drive current to be a predetermined duty below 100% until the current value of the drive current reaches a second target current value that is greater than the first target current value after the current value of the drive current reaches the first target current value.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: March 19, 2024
    Assignee: ALPS ALPINE CO., LTD.
    Inventor: Shigeru Furuki
  • Patent number: 11926377
    Abstract: A multiphase electric motor is disconnectable from a DC voltage source by way of a control unit. Phase windings with connection lines can each be alternately connected via a high-side and a low-side switching element to a respective pole of the DC voltage source, and the connection lines each have a device for disconnecting the phase windings from the DC voltage source upon a fault. The control unit may monitor the switching elements for short-circuit faults, switch off the switching elements when a fault occurs, determine whether the switching element causing the fault is a high-side or a low-side switching element, switch on at least a second of the high-side or correspondingly at least a second of the low-side switching elements in addition to the switching element causing the fault to brake the electric motor, switch off the switching elements after a braking period, and open the phase disconnection devices.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: March 12, 2024
    Assignees: thyssenkrupp Presta AG, thyssenkrupp AG
    Inventor: Gábor Kalapos
  • Patent number: 11929693
    Abstract: A control method of an electric machine is described, including a first step of detecting the angular position of a rotor of the electric machine; a second step of detecting the values of the alternate current next to at least two phases of the input current to the electric machine; a third step of detecting the values of voltage and direct current supplied as input to the inverter by the electric supply means; a fourth step of estimating the torque supplied by the electric machine performed by processing data detected in the first and second step; a fifth step of computing the torque supplied by the electric machine performed by processing data detected in the third and first step; a sixth step of comparing the value of the computed torque and the value of the estimated torque; a control system and a motor comprising such system are further described.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: March 12, 2024
    Assignee: MAVEL EDT S.P.A.
    Inventor: Denny Chiono
  • Patent number: 11923798
    Abstract: In a drive system having an inverter and electric motor, and a method for operating a drive system, the electric motor is fed from the AC-voltage-side terminal of the inverter, a first series circuit, which includes a brake resistor and a first controllable semiconductor switch, is connected at the DC-voltage-side terminal of the inverter, and a second series circuit, which includes an impedance and a controllable second semiconductor switch, is connected in parallel with the first series circuit, e.g., in parallel with the DC-voltage-side terminal of the inverter.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: March 5, 2024
    Assignee: SEW-EURODRIVE GMBH & CO. KG
    Inventors: Norbert Hettel, Alexander Kolbert
  • Patent number: 11923799
    Abstract: An apparatus for regulating a slew time of an output voltage of a motor driver system includes a gate current control circuit which has a first input coupled to receive a target slew time and a second input coupled to receive a slew time. The gate current control circuit provides an incremented gate current if the slew time is greater than the target slew time and provides a decremented gate current if the slew time is less than the target slew time. The apparatus includes a gate driver which has a first input coupled to receive a PWM signal and a second input coupled to receive the gate current. The gate driver provides a gate drive signal.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: March 5, 2024
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ashish Ojha, Krishnamurthy Shankar, Siddhartha Gopal Krishna, Priyank Anand, Ganapathi Hegde
  • Patent number: 11923730
    Abstract: A system for monitoring the temperature of a motor (M) with an electromechanically drivable motor shaft. The system comprising a sensor that is based on a thermal model (MOD), which describes the thermal behavior of the motor (M), a measuring means for determining the electrical input power (P) of the motor (M), and a measuring means for recording the shaft speed n of the motor shaft. An evaluation device is also provided, which is designed to determine the respectively current motor temperature of the motor (M) from the input power (P), a reference temperature TRef, the determined shaft speed n, and the thermal model (MOD).
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: March 5, 2024
    Assignee: ebm-papst Mulfingen GmbH & Co. KG
    Inventor: Ralph Wystup
  • Patent number: 11912508
    Abstract: In order to specify a method for controlling a transport unit (TE) of a transport device (1) in the form of a long-stator linear motor, said method allowing safe transport of an object (O) without exposing the object (O) to critical movement limit values, the invention provides that a movement profile of the transport unit (TE) is established at least in sections along the transport path (2) depending on a relative movement profile of a relative point (PR) connected to the transport unit (TE) and spaced at a distance from a reference point (PT) of the transport unit (TE).
    Type: Grant
    Filed: May 27, 2019
    Date of Patent: February 27, 2024
    Assignee: B&R INDUSTRIAL AUTOMATION GMBH
    Inventors: Stefan Huber, Benjamin Reichenwallner