Patents by Inventor Mark A. Bertolasi

Mark A. Bertolasi 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).

  • Automated motor adaptation
    Patent number: 10241152
    Abstract: A method of determining electromagnetic characteristics of an asynchronous motor system is described. A motor system model is presented including a stator resistance, a transient inductance, a magnetizing inductance and a rotor resistance. A DC sequence is used to determine the stator resistance, a voltage pulse is used to determine the transient inductance, a binary injection frequency search algorithm is used to determine the magnetizing inductance, and an AC sine wave at slip frequency with DC offset is used to determine the rotor resistance.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: March 26, 2019
    Assignee: Danfoss Power Electronics A/S
    Inventors: Mark A. Bertolasi, Michael Harke, Charles J. Romenesko, Shaohua Suo
  • AUTOMATED MOTOR ADAPTATION
    Publication number: 20160169974
    Abstract: A method of determining electromagnetic characteristics of an asynchronous motor system is described. A motor system model is presented including a stator resistance, a transient inductance, a magnetizing inductance and a rotor resistance. A DC sequence is used to determine the stator resistance, a voltage pulse is used to determine the transient inductance, a binary injection frequency search algorithm is used to determine the magnetizing inductance, and an AC sine wave at slip frequency with DC offset is used to determine the rotor resistance.
    Type: Application
    Filed: July 9, 2014
    Publication date: June 16, 2016
    Inventors: Mark A. Bertolasi, Michael Harke, Charles J. Romenesko, Shaohua Suo
  • ELECTRICAL SYSTEM AND METHOD FOR CONTROLLING AN ELECTRICAL MOTOR
    Publication number: 20120098471
    Abstract: An electrical system comprising an electrical motor and a method for controlling the electrical motor. The system comprises the electrical motor, a power source connection, a first motor control device placed between the power source connection and the motor, and a second motor control device placed in parallel with the first motor control device, the first motor control device supplying electrical power to the motor at least one first operating condition of the motor, and the second motor control device supplying electrical power to the motor at least one second operating condition of the motor, wherein the at least one first operating condition differs from the at least one second operating condition of the motor.
    Type: Application
    Filed: October 20, 2010
    Publication date: April 26, 2012
    Applicant: Danfoss Drives A/S
    Inventors: Tracy j. Newnam (Deceased), Charles J. Romenesko, Mark A. Bertolasi, Todd William Hanson, Jian M. Wu