Patents by Inventor Hazumu ABE

Hazumu ABE 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 device and control method for power generation system
    Patent number: 10804826
    Abstract: A control device 4 for a power generation system 1 includes a target voltage regulator part 43 configured to adjust the target voltage Vr of a generator 3. The target voltage regulator part 43 has: a voltage decrease function to reduce the target voltage Vr of the generator 3 in accordance with a decrease amount of a detection value Sm of a rotation speed S of a gas engine 2 or a frequency of the generator 3 if the detection value falls below an allowable variation value when a load is connected to the generator 3 via a circuit breaker 5; and a voltage decrease limiting function to maintain the target voltage Vr of the generator 3 at an allowable lower limit voltage determined on the basis of an output voltage V which is allowable to carry out normal operation of the load if the target voltage Vr of the generator 3 is lower than the allowable lower limit voltage.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: October 13, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Junichi Taniguchi, Hiroshi Yamawaki, Yoshiharu Ito, Masao Takatsuka, Takuya Karatsu, Hazumu Abe, Makoto Gohara
  • CONTROL DEVICE AND CONTROL METHOD FOR POWER GENERATION SYSTEM
    Publication number: 20200067438
    Abstract: A control device 4 for a power generation system 1 includes a target voltage regulator part 43 configured to adjust the target voltage Vr of a generator 3. The target voltage regulator part 43 has: a voltage decrease function to reduce the target voltage Vr of the generator 3 in accordance with a decrease amount of a detection value Sm of a rotation speed S of a gas engine 2 or a frequency of the generator 3 if the detection value falls below an allowable variation value when a load is connected to the generator 3 via a circuit breaker 5; and a voltage decrease limiting function to maintain the target voltage Vr of the generator 3 at an allowable lower limit voltage determined on the basis of an output voltage V which is allowable to carry out normal operation of the load if the target voltage Vr of the generator 3 is lower than the allowable lower limit voltage.
    Type: Application
    Filed: February 15, 2018
    Publication date: February 27, 2020
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Junichi TANIGUCHI, Hiroshi YAMAWAKI, Yoshiharu ITO, Masao TAKATSUKA, Takuya KARATSU, Hazumu ABE, Makoto GOHARA