Patents by Inventor KEVIN J. FITZPATRICK

KEVIN J. FITZPATRICK has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11368110
    Abstract: A method and circuit for controlling or starting a U-shape single phase synchronous permanent magnetic motor (U-SPSPM motor) having a rotor and a stator and coupled to a single phase alternating current (AC) power source through a switch, including estimating back electromotive force (back-EMF) of the motor based on an observer model with inputs indicative of the measured signals, and triggering the switch to supply power to the motor based on the estimates of the back-EMF.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: June 21, 2022
    Assignee: Whirlpool Corporation
    Inventors: Kevin J. Fitzpatrick, Biao He, Qiang Mei, Ying Xiao
  • Publication number: 20210036636
    Abstract: A method and circuit for controlling or starting a U-shape single phase synchronous permanent magnetic motor (U-SPSPM motor) having a rotor and a stator and coupled to a single phase alternating current (AC) power source through a switch, including estimating back electromotive force (back-EMF) of the motor based on an observer model with inputs indicative of the measured signals, and triggering the switch to supply power to the motor based on the estimates of the back-EMF.
    Type: Application
    Filed: October 21, 2020
    Publication date: February 4, 2021
    Inventors: KEVIN J. FITZPATRICK, BIAO HE, QIANG MEI, YING XIAO
  • Patent number: 10819258
    Abstract: A method and circuit for controlling or starting a U-shape single phase synchronous permanent magnetic motor (U-SPSPM motor) having a rotor and a stator and coupled to a single phase alternating current (AC) power source through a switch, including estimating back electromotive force (back-EMF) of the motor based on an observer model with inputs indicative of the measured signals, and triggering the switch to supply power to the motor based on the estimates of the back-EMF.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: October 27, 2020
    Assignee: Whirlpool Corporation
    Inventors: Kevin J. Fitzpatrick, Biao He, Qiang Mei, Ying Xiao
  • Publication number: 20190386587
    Abstract: A method and circuit for controlling or starting a U-shape single phase synchronous permanent magnetic motor (U-SPSPM motor) having a rotor and a stator and coupled to a single phase alternating current (AC) power source through a switch, including estimating back electromotive force (back-EMF) of the motor based on an observer model with inputs indicative of the measured signals, and triggering the switch to supply power to the motor based on the estimates of the back-EMF.
    Type: Application
    Filed: August 21, 2019
    Publication date: December 19, 2019
    Inventors: KEVIN J. FITZPATRICK, BIAO HE, QIANG MEI, YING XIAO
  • Patent number: 10454399
    Abstract: A method and circuit for controlling or starting a U-shape single phase synchronous permanent magnetic motor (U-SPSPM motor) having a rotor and a stator and coupled to a single phase alternating current (AC) power source through a switch, including estimating back electromotive force (back-EMF) of the motor based on an observer model with inputs indicative of the measured signals, and triggering the switch to supply power to the motor based on the estimates of the back-EMF.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: October 22, 2019
    Assignee: Whirlpool Corporation
    Inventors: Kevin J. Fitzpatrick, Biao He, Qiang Mei, Ying Xiao
  • Publication number: 20180351485
    Abstract: A method and circuit for controlling or starting a U-shape single phase synchronous permanent magnetic motor (U-SPSPM motor) having a rotor and a stator and coupled to a single phase alternating current (AC) power source through a switch, including estimating back electromotive force (back-EMF) of the motor based on an observer model with inputs indicative of the measured signals, and triggering the switch to supply power to the motor based on the estimates of the back-EMF.
    Type: Application
    Filed: August 10, 2018
    Publication date: December 6, 2018
    Inventors: KEVIN J. FITZPATRICK, BIAO HE, QIANG MEI, YING XIAO
  • Patent number: 10075110
    Abstract: A method and circuit for controlling or starting a U-shape single phase synchronous permanent magnetic motor (U-SPSPM motor) having a rotor and a stator and coupled to a single phase alternating current (AC) power source through a switch, including estimating back electromotive force (back-EMF) of the motor based on an observer model with inputs indicative of the measured signals, and triggering the switch to supply power to the motor based on the estimates of the back-EMF.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: September 11, 2018
    Assignee: Whirlpool Corporation
    Inventors: Kevin J. Fitzpatrick, Biao He, Qiang Mei, Ying Xiao
  • Patent number: 10064266
    Abstract: A printed circuit board to which corresponding wiring connectors such as power wiring connectors, may be connected to couple electrical components and a power supply to the printed circuit board and a control housing, which may be used for operably storing such a printed circuit board.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: August 28, 2018
    Assignee: Whirlpool Corporation
    Inventors: Kevin J. Fitzpatrick, Ryan K. Roth
  • Publication number: 20170288581
    Abstract: A method and circuit for controlling or starting a U-shape single phase synchronous permanent magnetic motor (U-SPSPM motor) having a rotor and a stator and coupled to a single phase alternating current (AC) power source through a switch, including estimating back electromotive force (back-EMF) of the motor based on an observer model with inputs indicative of the measured signals, and triggering the switch to supply power to the motor based on the estimates of the back-EMF.
    Type: Application
    Filed: June 15, 2017
    Publication date: October 5, 2017
    Inventors: KEVIN J. FITZPATRICK, BIAO HE, QIANG MEI, YING XIAO
  • Patent number: 9729093
    Abstract: A method for controlling a U-shape single phase synchronous permanent magnetic motor having a rotor and a stator and coupled to a single phase alternating current (AC) power source through a switch includes estimating back-electromotive force and the position of the rotor based on a voltage feedback signal, a current feedback signal, and a phase feedback signal indicative of a zero-crossing of the single phase AC power source. Once the speed and position of the rotor are determined, a controller can trigger a switch to supply power to the motor.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: August 8, 2017
    Assignee: Whirlpool Corporation
    Inventors: Kevin J. Fitzpatrick, Biao He, Qiang Mei, Ying Xiao
  • Publication number: 20170170759
    Abstract: A method for controlling a U-shape single phase synchronous permanent magnetic motor having a rotor and a stator and coupled to a single phase alternating current (AC) power source through a switch includes estimating back-electromotive force and the position of the rotor based on a voltage feedback signal, a current feedback signal, and a phase feedback signal indicative of a zero-crossing of the single phase AC power source. Once the speed and position of the rotor are determined, a controller can trigger a switch to supply power to the motor.
    Type: Application
    Filed: December 15, 2015
    Publication date: June 15, 2017
    Inventors: KEVIN J. FITZPATRICK, BIAO HE, QIANG MEI, YING XIAO
  • Publication number: 20130021131
    Abstract: A printed circuit board to which corresponding wiring connectors such as power wiring connectors, may be connected to couple electrical components and a power supply to the printed circuit board and a control housing, which may be used for operably storing such a printed circuit board.
    Type: Application
    Filed: July 19, 2011
    Publication date: January 24, 2013
    Applicant: WHIRLPOOL CORPORATION
    Inventors: KEVIN J. FITZPATRICK, RYAN K. ROTH