Patents by Inventor Hisanobu Shinoda

Hisanobu Shinoda 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).

  • Patent number: 11499486
    Abstract: An operation control device for a single shaft gas turbine selects an operation mode based on a load state of a power generator, and controls the turbine based on the operation mode. In a first operation mode, a rotational speed of the turbine is maintained within a first rotational speed range, and in a second operation mode, the rotational speed is maintained within a second rotational speed range set on a lower rotational speed side than the first rotational speed range. The second rotational speed range is set on the lower rotational speed side than the first rotational speed range with a first non-selection rotational speed range set therebetween.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: November 15, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Koichiro Iida, Akihiko Saito, Hisanobu Shinoda, Kuniaki Aoyama
  • Publication number: 20220344944
    Abstract: A power generation plant includes a plant device, an AC motor for starting the plant device, at least one DC power source, and an inverter disposed between the at least one DC power source and the AC motor and between the at least one DC power source and an electrical power grid. The inverter is configured to convert DC power from the at least one DC power source to AC power and is capable of selectively supplying the AC power to the AC motor or the electrical power grid.
    Type: Application
    Filed: July 12, 2022
    Publication date: October 27, 2022
    Inventors: Hideyuki UECHI, Rikuma SHIJO, Kouji HORIZOE, Hisanobu SHINODA, Mitsufumi GOTO
  • Patent number: 11418038
    Abstract: A power generation plant includes a plant device, an AC motor for starting the plant device, at least one DC power source, and an inverter disposed between the at least one DC power source and the AC motor and between the at least one DC power source and an electrical power grid. The inverter is configured to convert DC power from the at least one DC power source to AC power and is capable of selectively supplying the AC power to the AC motor or the electrical power grid.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: August 16, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hideyuki Uechi, Rikuma Shijo, Kouji Horizoe, Hisanobu Shinoda, Mitsufumi Goto
  • Publication number: 20210143645
    Abstract: A power generation plant includes a plant device, an AC motor for starting the plant device, at least one DC power source, and a first inverter disposed between the at least one DC power source and the AC motor and between the at least one DC power source and an electrical power grid. The first inverter is configured to convert DC power from the at least one DC power source to AC power and is capable of selectively supplying the AC power to the AC motor or the electrical power grid.
    Type: Application
    Filed: March 23, 2018
    Publication date: May 13, 2021
    Inventors: Hideyuki UECHI, Rikuma SHIJO, Kouji HORIZOE, Hisanobu SHINODA, Mitsufumi GOTO
  • Patent number: 10944307
    Abstract: A rotary electric machine includes an armature unit including an annular rotor configured to be rotatable around an axis and a stator disposed on a radially outer side of the annular rotor; an input or output shaft coupled at a first end thereof to an external device and extending along an axial direction of the annular rotor in a central space defined in a central portion of the annular rotor; and a coupling device disposed closer to a second end of the input or output shaft than an end of the annular rotor adjacent to the external device in the axial direction of the annular rotor and connecting the input or output shaft and the annular rotor so as to be able to transmit a torque.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: March 9, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Akihiko Umeda, Mikito Sasaki, Shin Asano, Hiroshi Sato, Hisanobu Shinoda, Shinichi Isobe, Atsushi Yuge
  • Publication number: 20200309040
    Abstract: An operation control device for a single shaft gas turbine selects an operation mode based on a load state of a power generator, and controls the turbine based on the operation mode. In a first operation mode, a rotational speed of the turbine is maintained within a first rotational speed range, and in a second operation mode, the rotational speed is maintained within a second rotational speed range set on a lower rotational speed side than the first rotational speed range. The second rotational speed range is set on the lower rotational speed side than the first rotational speed range with a first non-selection rotational speed range set therebetween.
    Type: Application
    Filed: November 19, 2019
    Publication date: October 1, 2020
    Inventors: Koichiro IIDA, Akihiko SAITO, Hisanobu SHINODA, Kuniaki AOYAMA
  • Publication number: 20200266681
    Abstract: A rotary electric machine includes an armature unit including an annular rotor configured to be rotatable around an axis and a stator disposed on a radially outer side of the rotor; an input/output shaft coupled at a first end to an external device and extending along an axial direction of the rotor in a central space formed in a central portion of the rotor; and a coupling device disposed closer to a second end of the input/output shaft than an end of the rotor adjacent to the external device is in the axial direction and connecting the input/output shaft and the rotor so as to be able to transmit a torque.
    Type: Application
    Filed: November 7, 2019
    Publication date: August 20, 2020
    Inventors: Akihiko UMEDA, Mikito SASAKI, Shin ASANO, Hiroshi SATO, Hisanobu SHINODA, Shinichi ISOBE, Atsushi YUGE
  • Publication number: 20190386551
    Abstract: An inner coil end portion of a coil includes inner notch portions and that are positioned to respectively overlap inner coil end portions of other coils which are adjacent to the coil in an axial direction as seen in the axial direction, and that are capable of accommodating the inner coil end portions of the other coils in the axial direction. An outer coil end portion of the coil includes outer notch portions and that are positioned to respectively overlap outer coil end portions of the other coils which are adjacent to the coil in the axial direction as seen in the axial direction, and that are capable of accommodating the outer coil end portions of the other coils in the axial direction.
    Type: Application
    Filed: May 29, 2019
    Publication date: December 19, 2019
    Inventors: Mikito SASAKI, Shinichi ISOBE, Masayuki SAKAI, Hisanobu SHINODA, Keisuke Ota, Ryoji OKABE
  • Patent number: 9341163
    Abstract: A wind-turbine control device controls a wind turbine generator in which a rotor having a plurality of blades receives wind and rotates. The generator generates electrical power through the rotation of the rotor. The electrical power is supplied to a utility grid, and electric energy to be supplied to the utility grid can be changed according to a change in the frequency of the utility grid. The wind-turbine control device includes a subtracter to calculate a frequency change, which is the difference between a measurement value of the frequency of generated output power of the wind turbine generator and a set value of the frequency of the generated output power of the wind turbine generator. The wind-turbine control device further includes a limiter to limit a change in the electrical power corresponding to the frequency change calculated by the subtracter, based on the rotational speed of the generator.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: May 17, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Tsuyoshi Wakasa, Hisanobu Shinoda, Masayuki Hashimoto, Yukio Yamashita, Takehiro Naka, Akira Yasugi, Takumi Nakashima
  • Patent number: 9287814
    Abstract: An object of the present invention is to, if a frequency decrease has occurred in a power system, avoid a trip in a wind turbine generator and reliably contribute to recovery of the frequency of the power system. The present invention provides a wind turbine generator that, if a predetermined frequency decrease that requires PFR has occurred in the power system, calculates a marginal active power based on the difference between a predetermined rotational speed lower limit value, which is obtained by providing the parallel-off rotational speed with a predetermined margin, and a measured value of the shaft rotational speed, and generates an active power command value based on the marginal active power.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: March 15, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Akira Yasugi, Tsuyoshi Wakasa, Hisanobu Shinoda
  • Patent number: 8903555
    Abstract: A wind power generator generates power through a rotation of a rotor and is interconnected, and operated with its power generation output previously limited in order to be able to further supply the power to a power system in response to a decrease in system frequency. Thus, a concentrated control system derives a required restricted amount corresponding to a power generation output required to respond to the decrease in system frequency, derives a value by subtracting an amount corresponding to a latent power generation output with which the power generation output can be increased, from the required restricted amount, and sets a restricted amount of the power generation output in each wind power generator to perform the operation with the power generation output previously limited to respond to the decrease in system frequency, based on the above value.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: December 2, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Takumi Nakashima, Masayuki Hashimoto, Akira Yasugi, Tsuyoshi Wakasa, Hisanobu Shinoda
  • Patent number: 8736094
    Abstract: A turbine controller of a wind turbine generator includes a generated-output-power command value creating section that creates a generated-output-power command value and an optimum-upper-and-lower-limit limiting section that limits the generated-output-power command value by means of an upper limit value and a lower limit value of the generated output power that are determined based on a power curve indicating the relationship between the generated output power and the rotational speed of the generator.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: May 27, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tsuyoshi Wakasa, Akira Yasugi, Yoshikatsu Ikawa, Takehiro Naka, Hisanobu Shinoda
  • Patent number: 8718832
    Abstract: To prevent disconnection of wind turbine generators due to changes in wind conditions even if the wind turbine generators is operated to limit the power output. A plurality of wind turbine generators that generate electric power by the rotation of rotors are provided in a wind farm are interconnected and are operated while the power outputs are limited in advance so as to be able to further supply electric power to a utility grid in response to a decrease in the frequency or voltage of the utility grid. The rotational speed of the rotor, which is a physical quantity related to increase and decrease in the power output of the wind turbine generator, is measured for each of the wind turbine generators by a wind-turbine control system, and the limitation amount of the power output of the wind turbine generator is set for each of the wind turbine generators by a central control system on the basis of the rotational speed of the rotor measured.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: May 6, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Masayuki Hashimoto, Hisanobu Shinoda, Tsuyoshi Wakasa, Akira Yasugi, Takumi Nakashima
  • Patent number: 8536722
    Abstract: In a wind turbine generator, the rotation of the rotor is speeded up by a hydraulic pump and a hydraulic motor and is transferred to a synchronous generator. In a state in which the wind turbine generator is interconnected to a utility grid, and the synchronous generator reaches a synchronous speed, if no mechanical power is transferred to the synchronous generator, a wind-turbine control system operates the synchronous generator as a synchronous condenser, thus controlling the magnitude of the field current of the synchronous generator. Thus, the wind turbine generator can supply reactive power to the utility grid without adding new equipment, such as a reactive power compensator using a semiconductor switch.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: September 17, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tsuyoshi Wakasa, Hisanobu Shinoda, Hidekazu Ichinose, Yukio Yamashita, Takatoshi Matsushita
  • Publication number: 20130221934
    Abstract: In a wind turbine generator, the rotation of the rotor is speeded up by a hydraulic pump and a hydraulic motor and is transferred to a synchronous generator. In a state in which the wind turbine generator is interconnected to a utility grid, and the synchronous generator reaches a synchronous speed, if no mechanical power is transferred to the synchronous generator, a wind-turbine control system operates the synchronous generator as a synchronous condenser, thus controlling the magnitude of the field current of the synchronous generator. Thus, the wind turbine generator can supply reactive power to the utility grid without adding new equipment, such as a reactive power compensator using a semiconductor switch.
    Type: Application
    Filed: January 29, 2013
    Publication date: August 29, 2013
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Tsuyoshi WAKASA, Hisanobu SHINODA, Hidekazu ICHINOSE, Yukio YAMASHITA, Takatoshi MATSUSHITA
  • Publication number: 20120261919
    Abstract: A wind power generator generates power through a rotation of a rotor and is interconnected, and operated with its power generation output previously limited in order to be able to further supply the power to a power system in response to a decrease in system frequency. Thus, a concentrated control system derives a required restricted amount corresponding to a power generation output required to respond to the decrease in system frequency, derives a value by subtracting an amount corresponding to a latent power generation output with which the power generation output can be increased, from the required restricted amount, and sets a restricted amount of the power generation output in each wind power generator to perform the operation with the power generation output previously limited to respond to the decrease in system frequency, based on the above value.
    Type: Application
    Filed: March 14, 2012
    Publication date: October 18, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takumi NAKASHIMA, Masayuki HASHIMOTO, Akira YASUGI, Tsuyoshi WAKASA, Hisanobu SHINODA
  • Publication number: 20120205912
    Abstract: A wind-turbine control device controls a wind turbine generator in which a rotor having a plurality of blades receives wind and rotates. The generator generates electrical power through the rotation of the rotor. The electrical power is supplied to a utility grid, and electric energy to be supplied to the utility grid can be changed according to a change in the frequency of the utility grid. The wind-turbine control device includes a subtracter to calculate a frequency change, which is the difference between a measurement value of the frequency of generated output power of the wind turbine generator and a set value of the frequency of the generated output power of the wind turbine generator. The wind-turbine control device further includes a limiter to limit a change in the electrical power corresponding to the frequency change calculated by the subtracter, based on the rotational speed of the generator.
    Type: Application
    Filed: April 24, 2012
    Publication date: August 16, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Tsuyoshi WAKASA, Hisanobu SHINODA, Masayuki HASHIMOTO, Yukio YAMASHITA, Takehiro NAKA, Akira YASUGI, Takumi NAKASHIMA
  • Publication number: 20120104755
    Abstract: To prevent disconnection of wind turbine generators due to changes in wind conditions even if the wind turbine generators is operated to limit the power output. A plurality of wind turbine generators that generate electric power by the rotation of rotors are provided in a wind farm are interconnected and are operated while the power outputs are limited in advance so as to be able to further supply electric power to a utility grid in response to a decrease in the frequency or voltage of the utility grid. The rotational speed of the rotor, which is a physical quantity related to increase and decrease in the power output of the wind turbine generator, is measured for each of the wind turbine generators by a wind-turbine control system, and the limitation amount of the power output of the wind turbine generator is set for each of the wind turbine generators by a central control system on the basis of the rotational speed of the rotor measured.
    Type: Application
    Filed: July 29, 2011
    Publication date: May 3, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masayuki HASHIMOTO, Hisanobu SHINODA, Tsuyoshi WAKASA, Akira YASUGI, Takumi NAKASHIMA
  • Publication number: 20120104753
    Abstract: A wind power generator generates power through a rotation of a rotor and is interconnected, and operated with its power generation output previously limited in order to be able to further supply the power to a power system in response to a decrease in system frequency. Thus, a concentrated control system derives a required restricted amount corresponding to a power generation output required to respond to the decrease in system frequency, derives a value by subtracting an amount corresponding to a latent power generation output with which the power generation output can be increased, from the required restricted amount, and sets a restricted amount of the power generation output in each wind power generator to perform the operation with the power generation output previously limited to respond to the decrease in system frequency, based on the above value.
    Type: Application
    Filed: January 31, 2011
    Publication date: May 3, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takumi NAKASHIMA, Masayuki HASHIMOTO, Akira YASUGI, Tsuyoshi WAKASA, Hisanobu SHINODA
  • Publication number: 20120061961
    Abstract: An object of the present invention is to, if a frequency decrease has occurred in a power system, avoid a trip in a wind turbine generator and reliably contribute to recovery of the frequency of the power system. The present invention provides a wind turbine generator that, if a predetermined frequency decrease that requires PFR has occurred in the power system, calculates a marginal active power based on the difference between a predetermined rotational speed lower limit value, which is obtained by providing the parallel-off rotational speed with a predetermined margin, and a measured value of the shaft rotational speed, and generates an active power command value based on the marginal active power.
    Type: Application
    Filed: May 27, 2011
    Publication date: March 15, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Akira YASUGI, Tsuyoshi WAKASA, Hisanobu SHINODA