Patents by Inventor Akihito Kunihiro

Akihito Kunihiro 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).

  • Method for controlling cooling system of gas turbine, control device performing the same, and gas turbine plant comprising the control device
    Patent number: 10465563
    Abstract: A gas turbine cooling system of the present invention includes a cooler that cools compressed air extracted from an air compressor to make cooling air, a cooling air compressor that supplies the cooling air to a combustion liner of a combustor, and an IGV that regulates a flow rate of the cooling air. The control device of the gas turbine cooling system includes a target value setting part that determines a target value with respect to a flow rate equivalent value of the cooling air according to detected temperature of the cooling air, a correction driving amount calculation part that obtains a correction driving amount which reduces a deviation of detected flow rate equivalent value of the cooling air with respect to the target value, and a drive command output part that outputs a drive command corresponding to the correction driving amount to the IGV.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: November 5, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventor: Akihito Kunihiro
  • METHOD FOR CONTROLLING COOLING SYSTEM OF GAS TURBINE, CONTROL DEVICE PERFORMING THE SAME, AND GAS TURBINE PLANT COMPRISING THE CONTROL DEVICE
    Publication number: 20140083108
    Abstract: A gas turbine cooling system of the present invention includes a cooler that cools compressed air extracted from an air compressor to make cooling air, a cooling air compressor that supplies the cooling air to a combustion liner of a combustor, and an IGV that regulates a flow rate of the cooling air. The control device of the gas turbine cooling system includes a target value setting part that determines a target value with respect to a flow rate equivalent value of the cooling air according to detected temperature of the cooling air, a correction driving amount calculation part that obtains a correction driving amount which reduces a deviation of detected flow rate equivalent value of the cooling air with respect to the target value, and a drive command output part that outputs a drive command corresponding to the correction driving amount to the IGV.
    Type: Application
    Filed: February 22, 2013
    Publication date: March 27, 2014
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Akihito Kunihiro