Patents by Inventor Yuichi KATSUKI

Yuichi KATSUKI 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).

  • Voltage converter control apparatus configured to determine a normal duty ratio range based on a command value for the output voltage
    Patent number: 10547239
    Abstract: A voltage converter control apparatus controls repetitive switching operations of a voltage converter, for conversion between a terminal voltage of a battery as an input-side voltage and a terminal voltage of a power inverter as an output-side voltage, by determining a command value of duty ratio of the switching in accordance with a command value of the output-side voltage. The voltage converter control apparatus sets a normal duty ratio range defining limit values of the duty ratio for normal operation of the voltage converter, with the limit values being determined based upon information including the command value of the output-side voltage.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: January 28, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yuichi Katsuki, Takeshi Itoh
  • VOLTAGE CONVERTER CONTROL APPARATUS
    Publication number: 20160065073
    Abstract: A voltage converter control apparatus controls repetitive switching operations of a voltage converter, for conversion between a terminal voltage of a battery as an input-side voltage and a terminal voltage of a power inverter as an output-side voltage, by determining a command value of duty ratio of the switching in accordance with a command value of the output-side voltage. The voltage converter control apparatus sets a normal duty ratio range defining limit values of the duty ratio for normal operation of the voltage converter, with the limit values being determined based upon information including the command value of the output-side voltage.
    Type: Application
    Filed: August 28, 2015
    Publication date: March 3, 2016
    Applicant: DENSO CORPORATION
    Inventors: Yuichi KATSUKI, Takeshi ITOH