Patents by Inventor Jason John SMOLARCHUK

Jason John SMOLARCHUK 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).

  • Ground fault protection systems and methods
    Patent number: 9065270
    Abstract: A ground fault protection system may include a controller that is configured to receive signals representing a ground fault detection voltage and a DC link voltage of the machine. Based on the ground fault detection voltage and the DC link voltage, the controller may determine a ground fault detection percentage value, and a worst case component insulation voltage. The controller may compare an absolute value of the worst case component insulation voltage with a rated insulation voltage of a component of the machine. When the absolute value of the worst case component insulation voltage is higher than the rated insulation voltage, the controller may determine a new DC link voltage based on the rated insulation voltage and the ground fault detection percentage value, and may operate the machine by using the new DC link voltage.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: June 23, 2015
    Assignee: Caterpillar Inc.
    Inventors: Lewei Qian, Jason John Smolarchuk, Donald John Gilmore
  • GROUND FAULT PROTECTION SYSTEMS AND METHODS
    Publication number: 20140240875
    Abstract: A ground fault protection system is disclosed. The ground fault protection system may include a controller that is configured to receive signals representing a ground fault detection voltage and a DC link voltage of the machine. Based on the ground fault detection voltage and the DC link voltage, the controller may determine a ground fault detection percentage value. Based on the ground fault detection percentage value and the DC link voltage, the controller may further determine a worst case component insulation voltage. The controller may compare an absolute value of the worst case component insulation voltage with a rated insulation voltage of a component of the machine. When the absolute value of the worst case component insulation voltage is higher than the rated insulation voltage, the controller may determine a new DC link voltage based on the rated insulation voltage and the ground fault detection percentage value, and may output a signal for operating the machine by using the new DC link voltage.
    Type: Application
    Filed: February 26, 2013
    Publication date: August 28, 2014
    Applicant: Caterpillar Inc.
    Inventors: Lewei QIAN, Jason John SMOLARCHUK, Donald John GILMORE