Patents by Inventor Christopher Alger

Christopher Alger 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).

  • Methods and apparatus for three-phase motor control with error compensation
    Patent number: 10651767
    Abstract: Method and apparatus for providing error compensation for a magnetic field sensing element in a three-phase motor. In embodiments, a driving angle is determined from zero-crossings of the magnet pole-pairs and error compensation levels for the pole-pairs is determined to reduce distortions in the motor current waveform.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: May 12, 2020
    Assignee: Allegro MicroSystems, LLC
    Inventors: Yisong Lu, Christopher Alger, Lyndon Ambruson
  • METHODS AND APPARATUS FOR THREE-PHASE MOTOR CONTROL WITH ERROR COMPENSATION
    Publication number: 20190260315
    Abstract: Method and apparatus for providing error compensation for a magnetic field sensing element in a three-phase motor. In embodiments, a driving angle is determined from zero-crossings of the magnet pole-pairs and error compensation levels for the pole-pairs is determined to reduce distortions in the motor current waveform.
    Type: Application
    Filed: May 1, 2019
    Publication date: August 22, 2019
    Applicant: Allegro MicroSystems, LLC
    Inventors: Yisong Lu, Christopher Alger, Lyndon Ambruson
  • Methods and apparatus for three-phase motor control with error compensation
    Patent number: 10326389
    Abstract: Method and apparatus for providing error compensation for a magnetic field sensing element in a three-phase motor. In embodiments, a driving angle is determined from zero-crossings of the magnet pole-pairs and error compensation levels for the pole-pairs is determined to reduce distortions in the motor current waveform.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: June 18, 2019
    Assignee: Allegro MicroSystems, LLC
    Inventors: Yisong Lu, Christopher Alger, Lyndon Ambruson
  • METHODS AND APPARATUS FOR THREE-PHASE MOTOR CONTROL WITH ERROR COMPENSATION
    Publication number: 20180278185
    Abstract: Method and apparatus for providing error compensation for a magnetic field sensing element in a three-phase motor. In embodiments, a driving angle is determined from zero-crossings of the magnet pole-pairs and error compensation levels for the pole-pairs is determined to reduce distortions in the motor current waveform.
    Type: Application
    Filed: March 23, 2017
    Publication date: September 27, 2018
    Applicant: Allegro MicroSystems, LLC
    Inventors: Yisong Lu, Christopher Alger, Lyndon Ambruson
  • System and method for serial communication by an electronic circuit
    Patent number: 9300235
    Abstract: A motor driver includes at least two terminals suitable for being coupled to a motor controller and to receive a motor command signal and transmit a motor status signal when the motor driver is controlling a motor. A serial data communication circuit may be configured to send and receive serial data over the at least two terminals when the at least two terminals are idle.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: March 29, 2016
    Assignee: Allegro Microsystems, LLC
    Inventors: Chee-Kiong Ng, Christopher Alger, Timothy Reynolds
  • System and Method for Serial Communication by an Electronic Circuit
    Publication number: 20140292247
    Abstract: A motor driver includes at least two terminals suitable for being coupled to a motor controller and to receive a motor command signal and transmit a motor status signal when the motor driver is controlling a motor. A serial data communication circuit may be configured to send and receive serial data over the at least two terminals when the at least two terminals are idle.
    Type: Application
    Filed: March 27, 2013
    Publication date: October 2, 2014
    Applicant: Allegro Microsystems, Inc.
    Inventors: Chee-Kiong Ng, Christopher Alger, Timothy Reynolds