Patents by Inventor Jan Korte

Jan Korte 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).

  • Bidirectional DC converter assembly having cascade of isolated resonant converter and step-up/step-down converter
    Patent number: 10340810
    Abstract: A bidirectional DC converter assembly includes two serially-arranged DC/DC converters. The first converter is a buck (or a buck/boost) converter to be connected to a high-voltage (HV) level of an electric vehicle. The second converter is a series resonant switching converter to be connected to a low-voltage (LV) of the vehicle. The series resonant switching converter of the second converter is formed by a DC/AC converter, a transformer, and an AC/DC converter, which are serially arranged in the stated order between the first converter and the LV level. A bidirectional peak current controller is associated with the first converter. The peak current controller is realized by a current measurement at an inductor of the first converter. The peak current controller uses the coil current value, which is modified with an offset value and thus has a constant sign, as a set point in controlling the first converter.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: July 2, 2019
    Assignee: Leopold Kostal GmbH & Co. KG
    Inventors: Patrick Achtzehn, Jan Korte, Jens Czichon
  • Bidirectional DC Converter Assembly Having Cascade of Isolated Resonant Converter and Step-Up/Step-Down Converter
    Publication number: 20190097543
    Abstract: A bidirectional DC converter assembly includes two serially-arranged DC/DC converters. The first converter is a buck (or a buck/boost) converter to be connected to a high-voltage (HV) level of an electric vehicle. The second converter is a series resonant switching converter to be connected to a low-voltage (LV) of the vehicle. The series resonant switching converter of the second converter is formed by a DC/AC converter, a transformer, and an AC/DC converter, which are serially arranged in the stated order between the first converter and the LV level. A bidirectional peak current controller is associated with the first converter. The peak current controller is realized by a current measurement at an inductor of the first converter. The peak current controller uses the coil current value, which is modified with an offset value and thus has a constant sign, as a set point in controlling the first converter.
    Type: Application
    Filed: November 26, 2018
    Publication date: March 28, 2019
    Applicant: Leopold Kostal GmbH & Co. KG
    Inventors: Patrick Achtzehn, Jan Korte, Jens Czichon