Patents by Inventor Yasutomo Moriura

Yasutomo Moriura 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).

  • Control and protection system for AC-DC conversion system
    Patent number: 5715151
    Abstract: A control and protection system for an AC-DC conversion system for exchanging an electric power between two AC power systems. The AC-DC conversion system is composed of two power converters and two circuit breakers connected to the two AC power systems. Each of the power converters is composed of a plurality of switching devices controlled by a gate signal and converts AC power into DC power or DC power into AC power. The control and protection system is composed of two control and protection units. Each of the control and protection units includes a protection unit for detecting a fault of the power converter to generate a first protection order signal when the fault is detected, and a phase control unit for continuously generating firing pulses to the switching devices of the power converter.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: February 3, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yasutomo Moriura