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).
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Patent number: 11499486Abstract: 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: GrantFiled: November 19, 2019Date of Patent: November 15, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Koichiro Iida, Akihiko Saito, Hisanobu Shinoda, Kuniaki Aoyama
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Publication number: 20220344944Abstract: 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: ApplicationFiled: July 12, 2022Publication date: October 27, 2022Inventors: Hideyuki UECHI, Rikuma SHIJO, Kouji HORIZOE, Hisanobu SHINODA, Mitsufumi GOTO
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Patent number: 11418038Abstract: 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: GrantFiled: March 23, 2018Date of Patent: August 16, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hideyuki Uechi, Rikuma Shijo, Kouji Horizoe, Hisanobu Shinoda, Mitsufumi Goto
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Publication number: 20210143645Abstract: 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: ApplicationFiled: March 23, 2018Publication date: May 13, 2021Inventors: Hideyuki UECHI, Rikuma SHIJO, Kouji HORIZOE, Hisanobu SHINODA, Mitsufumi GOTO
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Patent number: 10944307Abstract: 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: GrantFiled: November 7, 2019Date of Patent: March 9, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Akihiko Umeda, Mikito Sasaki, Shin Asano, Hiroshi Sato, Hisanobu Shinoda, Shinichi Isobe, Atsushi Yuge
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Publication number: 20200309040Abstract: 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: ApplicationFiled: November 19, 2019Publication date: October 1, 2020Inventors: Koichiro IIDA, Akihiko SAITO, Hisanobu SHINODA, Kuniaki AOYAMA
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Publication number: 20200266681Abstract: 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: ApplicationFiled: November 7, 2019Publication date: August 20, 2020Inventors: Akihiko UMEDA, Mikito SASAKI, Shin ASANO, Hiroshi SATO, Hisanobu SHINODA, Shinichi ISOBE, Atsushi YUGE
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Publication number: 20190386551Abstract: 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: ApplicationFiled: May 29, 2019Publication date: December 19, 2019Inventors: Mikito SASAKI, Shinichi ISOBE, Masayuki SAKAI, Hisanobu SHINODA, Keisuke Ota, Ryoji OKABE
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Patent number: 9341163Abstract: 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: GrantFiled: April 24, 2012Date of Patent: May 17, 2016Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tsuyoshi Wakasa, Hisanobu Shinoda, Masayuki Hashimoto, Yukio Yamashita, Takehiro Naka, Akira Yasugi, Takumi Nakashima
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Patent number: 9287814Abstract: 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: GrantFiled: May 27, 2011Date of Patent: March 15, 2016Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Akira Yasugi, Tsuyoshi Wakasa, Hisanobu Shinoda
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Patent number: 8903555Abstract: 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: GrantFiled: March 14, 2012Date of Patent: December 2, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Takumi Nakashima, Masayuki Hashimoto, Akira Yasugi, Tsuyoshi Wakasa, Hisanobu Shinoda
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Patent number: 8736094Abstract: 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: GrantFiled: January 29, 2013Date of Patent: May 27, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Tsuyoshi Wakasa, Akira Yasugi, Yoshikatsu Ikawa, Takehiro Naka, Hisanobu Shinoda
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Patent number: 8718832Abstract: 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: GrantFiled: July 29, 2011Date of Patent: May 6, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Masayuki Hashimoto, Hisanobu Shinoda, Tsuyoshi Wakasa, Akira Yasugi, Takumi Nakashima
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Patent number: 8536722Abstract: 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: GrantFiled: January 29, 2013Date of Patent: September 17, 2013Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Tsuyoshi Wakasa, Hisanobu Shinoda, Hidekazu Ichinose, Yukio Yamashita, Takatoshi Matsushita
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Publication number: 20130221934Abstract: 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: ApplicationFiled: January 29, 2013Publication date: August 29, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tsuyoshi WAKASA, Hisanobu SHINODA, Hidekazu ICHINOSE, Yukio YAMASHITA, Takatoshi MATSUSHITA
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Publication number: 20120261919Abstract: 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: ApplicationFiled: March 14, 2012Publication date: October 18, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Takumi NAKASHIMA, Masayuki HASHIMOTO, Akira YASUGI, Tsuyoshi WAKASA, Hisanobu SHINODA
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Publication number: 20120205912Abstract: 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: ApplicationFiled: April 24, 2012Publication date: August 16, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tsuyoshi WAKASA, Hisanobu SHINODA, Masayuki HASHIMOTO, Yukio YAMASHITA, Takehiro NAKA, Akira YASUGI, Takumi NAKASHIMA
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Publication number: 20120104755Abstract: 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: ApplicationFiled: July 29, 2011Publication date: May 3, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Masayuki HASHIMOTO, Hisanobu SHINODA, Tsuyoshi WAKASA, Akira YASUGI, Takumi NAKASHIMA
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Publication number: 20120104753Abstract: 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: ApplicationFiled: January 31, 2011Publication date: May 3, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Takumi NAKASHIMA, Masayuki HASHIMOTO, Akira YASUGI, Tsuyoshi WAKASA, Hisanobu SHINODA
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Publication number: 20120061961Abstract: 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: ApplicationFiled: May 27, 2011Publication date: March 15, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Akira YASUGI, Tsuyoshi WAKASA, Hisanobu SHINODA