Patents by Inventor Masahiro Tsuyoshi

Masahiro Tsuyoshi 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).

  • Power electronic module IGBT protection method and system
    Patent number: 8148929
    Abstract: A power electronics device with an improved IGBT protection mechanism is provided. More specifically, systems and methods are provided for reducing the switching frequency of an inverter module based on the junction temperature variation of the IGBT.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: April 3, 2012
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Lixiang Wei, Masahiro Tsuyoshi, Richard A. Lukaszewski
  • POWER ELECTRONIC MODULE IGBT PROTECTION METHOD AND SYSTEM
    Publication number: 20100080024
    Abstract: A power electronics device with an improved IGBT protection mechanism is provided. More specifically, systems and methods are provided for reducing the switching frequency of an inverter module based on the junction temperature variation of the IGBT.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Applicant: Rockwell Automation Technologies, Inc.
    Inventors: Lixiang Wei, Masahiro Tsuyoshi, Richard A. Lukaszewski
  • Method and apparatus to regulate torque provided to loads
    Patent number: 7095209
    Abstract: A method and apparatus for use with a controller for controlling a machine wherein a torque reference value is provided, the method for identifying an error representative of the difference between the torque reference value and the torque applied to the machine and using the error value to modify machine operation.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: August 22, 2006
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Jerry Dee Thunes, Thomas J. Rehm, Takayoshi Matsuo, Masahiro Tsuyoshi, John Joseph Golownia, Jr.
  • Method and apparatus to regulate torque provided to loads
    Publication number: 20060066275
    Abstract: A method and apparatus for use with a controller for controlling a machine wherein a torque reference value is provided, the method for identifying an error representative of the difference between the torque reference value and the torque applied to the machine and using the error value to modify machine operation.
    Type: Application
    Filed: January 31, 2005
    Publication date: March 30, 2006
    Inventors: Jerry Thunes, Thomas Rehm, Takayoshi Matsuo, Masahiro Tsuyoshi, John Golownia