Patents by Inventor Jyothiraditya Ramaswamy

Jyothiraditya Ramaswamy 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).

  • START-UP CONTROL FOR MULTILEVEL DUAL ACTIVE BRIDGE CONVERTER
    Publication number: 20250080002
    Abstract: Techniques are described to smooth start a multilevel dual active bridge converter by pre-charging the capacitors present on the converter without requiring any additional hardware. Various phase shift angles determine the power delivered by the dual active bridge converter. By using the techniques, a predefined amount of time is reserved to pre-charge the capacitors until the capacitors reach a desired voltage after which time the smooth starting of the dual active bridge converter is initiated.
    Type: Application
    Filed: September 6, 2023
    Publication date: March 6, 2025
    Applicant: Caterpillar Inc.
    Inventors: Karthik Desingu, Jyothiraditya Ramaswamy, Gregory J. Speckhart, James D. Siegle
  • Current control techniques for DC/DC converter
    Patent number: 12081133
    Abstract: A fundamental harmonic matching control technique (FHMT) can optimize the use of the switching devices needed to operate a dual active bridge DC/DC converter, which reduces the peak and RMS currents thereby reducing the switching power losses. The FHMT control techniques can also reduce the current rating of the switching devices, transformer, and the inductor of the dual active bridge DC/DC converter.
    Type: Grant
    Filed: July 27, 2022
    Date of Patent: September 3, 2024
    Assignee: Caterpillar Inc.
    Inventors: Jyothiraditya Ramaswamy, Yingying Kuai, Gholamreza Esmaili
  • CURRENT CONTROL TECHNIQUES FOR DC/DC CONVERTER
    Publication number: 20240039415
    Abstract: A fundamental harmonic matching control technique (FHMT) can optimize the use of the switching devices needed to operate a dual active bridge DC/DC converter, which reduces the peak and RMS currents thereby reducing the switching power losses. The FHMT control techniques can also reduce the current rating of the switching devices, transformer, and the inductor of the dual active bridge DC/DC converter.
    Type: Application
    Filed: July 27, 2022
    Publication date: February 1, 2024
    Applicant: Caterpillar Inc.
    Inventors: Jyothiraditya Ramaswamy, Yingying Kuai, Gholamreza Esmaili