Patents by Inventor Masaki Matsukuma

Masaki Matsukuma 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: 10995664
    Abstract: In a compressed air energy storage and power generation device, a compressed air energy storage and power generation method defines, as a reference storage value, a storage value indicating that a storage amount of air in an accumulator tank is in a predetermined intermediate state. At the reference storage value, at least one of a motor and a generator rotates at a rated rotation speed. When a storage value indicating a current storage amount in the accumulator tank is larger than the reference storage value, at least one of the motor and the generator is controlled to rotate at equal to or less than the rated rotation speed. When the storage value indicating the current storage amount in the accumulator tank is smaller than the reference storage value, at least one of the motor and the generator is controlled to rotate at equal to or more than the rated rotation speed and equal to or less than a maximum permissible rotation speed.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: May 4, 2021
    Assignee: Kobe Steel, Ltd.
    Inventors: Masaki Matsukuma, Hiroki Saruta, Kanami Sakamoto
  • Publication number: 20210104912
    Abstract: A CAES power generation device includes a compression/expansion/combined machine, a pressure accumulation unit for storing compressed air, a low temperature water storage tank and a high temperature water storage tank, heat exchangers, and liquid maintaining units. The compression/expansion/combined machine has a function of compressing air using the electric power and a function of expanding the compressed air to generate electric power. The low temperature water storage tank and the high temperature water storage tank store liquid water and are fluidly connected to each other. The heat exchangers exchange heat between the compressed air and the water. The liquid maintaining units pressurize the water flowing through the heat exchangers and maintain the water in a liquid form.
    Type: Application
    Filed: January 18, 2019
    Publication date: April 8, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventor: Masaki MATSUKUMA
  • Patent number: 10954852
    Abstract: This compressed air storage power generation device 10 is provided with: a power demand receiving unit 60 which receives in real-time the power demand value of consumer equipment 3; a power supply adjustment device 19 which adjusts the amount of power generated by a generator 15; and a control device which has a power generation amount control unit 17a for controlling the power supply adjustment device 19 so as to supply the consumer equipment 3 in a timely fashion with power corresponding to the power demand value received by the power demand receiving unit 60.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: March 23, 2021
    Assignee: Kobe Steel, Ltd.
    Inventors: Masaki Matsukuma, Ayaka Nagahira
  • Patent number: 10907542
    Abstract: A compressor, a first heat exchanger, a first heat storage unit, a pressure accumulation unit, a second heat exchanger, and a second heat storage unit are provided. The first heat storage unit and the second heat storage unit are connected by a first flow passage and a second flow passage. The first and second flow passages are connected by a third flow passage. A first on-off means is provided in a first region of the first flow passage and a second on-off means is provided in a second region. A third on-off means is provided in a third region of the second flow passage, and a fourth on-off means is provided in a fourth region. A driving means and a heating means are provided in the third flow passage.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: February 2, 2021
    Assignee: Kobe Steel, Ltd.
    Inventors: Yohei Kubo, Masaki Matsukuma, Yuji Matsuo, Takashi Sato, Ryo Nakamichi
  • Publication number: 20210017905
    Abstract: A compressed air energy storage power generation apparatus includes a power demand receiving unit that receives a power demand value of a consumer facility. The apparatus includes a first air supply valve that adjusts a flow rate of compressed air to be supplied from a low-pressure tank to an expander, a second air supply valve that adjusts a flow rate of compressed air to be supplied from a high-pressure tank to the expander, and a control device configured to open the first air supply valve according to the power demand value in a state where the second air supply valve is closed when the power demand value is less than a predetermined threshold, and to open the second air supply valve according to the power demand value when the power demand value is equal to or greater than the predetermined threshold.
    Type: Application
    Filed: July 2, 2018
    Publication date: January 21, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Masaki MATSUKUMA, Ayaka NAGAHIRA
  • Patent number: 10892642
    Abstract: A compressed air storage power generation apparatus is provided with a motor, a compressor, a pressure accumulation tank, an expander, a generator, a first heat exchanger and a cold heat extracting unit. The motor is driven by input power generated using renewable energy. The compressor is mechanically connected to the motor and compresses air. The pressure accumulation tank accumulates the compressed air compressed by the compressor. The expander is driven by the compressed air supplied from the pressure accumulation tank. The generator is mechanically connected to the expander. The first heat exchanger exchanges heat between the compressed air supplied from the compressor and a heat medium and cools the compressed air to room temperature. The cold heat extracting unit extracts air serving as working fluid as cold air of the room temperature or lower.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: January 12, 2021
    Assignee: Kobe Steel, Ltd.
    Inventors: Masaki Matsukuma, Hiroki Saruta, Takashi Sato, Kanami Sakamoto, Masatake Toshima, Yohei Kubo
  • Publication number: 20200408469
    Abstract: A CAES power generation device includes a plurality of compression/expansion/combined machines, a pressure accumulation unit for storing compressed air, a plurality of heat exchangers, a heat storage unit for storing a heating medium, and a plurality of first containers 10 having a rectangular parallelepiped shape for accommodating the plurality of compression/expansion/combined machines and the plurality of heat exchangers. The plurality of first containers are arranged side by side so that long side surfaces face each other. The long side surface of the first container is provided with at least one vent being an outlet of a pipe for communicating the compression/expansion/combined machine with the outside of the container.
    Type: Application
    Filed: January 18, 2019
    Publication date: December 31, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Masaki MATSUKUMA, Hiroki SARUTA, Yuji MATSUO
  • Patent number: 10868440
    Abstract: A compressed air energy storage generator includes a motor, a compressor, a pressure accumulator, an expander, a generator, an electric-motor inverter, a generator inverter, a feed command receiver, a discharge command receiver, and a controller. The controller includes a feed determination unit, a discharge determination unit, and an input and output adjustment unit, the feed determination unit being configured to determine whether a feed command value is smaller than minimum charge power, the discharge determination unit being configured to determine whether a discharge command value is smaller than minimum discharge power, the input and output adjustment unit being configured to control, when the feed determination unit determines that the feed command value is smaller than the minimum charge power or when the discharge determination unit determines that the discharge command value is smaller than the minimum discharge power, the inverters to simultaneously drive the motor and the generator.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: December 15, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Takashi Sato, Ryo Nakamichi, Masaki Matsukuma, Hiroki Saruta
  • Publication number: 20200340399
    Abstract: In a main flow passage, a first heat exchanger, a first heat storage unit, a second heat exchanger, and a second heat storage unit are connected by a heating medium flow passage. The main flow passage allows a heating medium to be circulated. A sub flow passage includes a shortened flow passage which is a part of the heating medium flow passage and branches from the heating medium flow passage between the second heat exchanger and the second heat storage unit and extends to the first heat storage unit. The sub flow passage allows circulation of the heating medium between the first heat storage unit and the second heat exchanger. A first heating means in a middle of the shortened flow passage, the first heating means heating a passing heat medium, and a switching means conducting switching between the main flow passage and the sub flow passage are provided.
    Type: Application
    Filed: March 15, 2018
    Publication date: October 29, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Yohei KUBO, Masaki MATSUKUMA, Yuji MATSUO, Takashi SATO, Ryo NAKAMICHI
  • Publication number: 20200332709
    Abstract: A cold-heat power generation device includes a thermal power generation device, a CAES power generation device, and an output merging part. A facility includes an LNG vaporizer, a motive power part that burns natural gas vaporized by the LNG vaporizer to convert the natural gas into motive power, and a primary generator that is driven by the motive power part. A facility includes an air compressor that compresses air cooled by the LNG vaporizer, an air tank that stores compressed air discharged from the air compressor, air heaters that heat the compressed air supplied from the air tank with heat generated when the natural gas is burned in the motive power part, an air expander that expands the compressed air heated by the air heaters, and a secondary generator that is driven by the air expander. At the output merging part, output of the primary generator and output of the secondary generator are merged with each other.
    Type: Application
    Filed: December 12, 2018
    Publication date: October 22, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Hiroki SARUTA, Masaki MATSUKUMA, Takashi SATO
  • Publication number: 20200325891
    Abstract: A CAES generator includes a plurality of motors, a plurality of compressors, a pressure accumulator, an expander, a generator, an electric-motor inverter that changes a rotation speed of each of the motors, a feed command receiver that receives input power as a feed command value before feeding the input power, and a controller. The controller includes a compressor number calculation unit that calculates a maximum number of motors that are allowed to be driven at a rating based on the feed command value, and a compressor drive control unit that drives at the rating, the motors, the number of which is the maximum number calculated by the compressor number calculation unit.
    Type: Application
    Filed: April 10, 2018
    Publication date: October 15, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Takashi SATO, Ryo NAKAMICHI, Masaki MATSUKUMA, Hiroki SARUTA
  • Patent number: 10794278
    Abstract: The compressed air energy storage power generation device includes a third heat exchanger and fourth heat exchangers. The third heat exchanger performs heat exchange between the air exhausted from the expander and the second heating medium to cool the second heating medium. The fourth heat exchanger performs heat exchange between the second heating medium cooled by the third heat exchanger and at least one of the lubricating oil to be supplied to the compressor or the first heating medium to be supplied to the first heat exchanger to cool the lubricating oil or the first heating medium.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: October 6, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Yohei Kubo, Masatake Toshima, Hiroki Saruta, Masaki Matsukuma, Kanami Sakamoto
  • Patent number: 10794279
    Abstract: This compressed air storage power generation device 10 is provided with: a power demand receiving unit 60; a cold heat demand receiving unit 61; a power supply adjustment device 19 which adjusts the amount of power generated by a generator 15; a cold heat supply adjustment valve 22 which adjusts the amount of cold heat supplied from a first heat medium storage unit 21 to consumer equipment 3; and a control device which controls the power supply adjustment device 19 and the cold heat supply adjustment valve 22 so as to supply the consumer equipment 3 with power and cold heat corresponding to the power demand value and the cold heat demand value.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: October 6, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Masaki Matsukuma, Ayaka Nagahira
  • Patent number: 10746097
    Abstract: A compressed air energy storage power generation device includes a first heat exchanger, a heat storage tank, a second heat exchanger, a heating unit, a first power distributor, and a controller. The first heat exchanger performs heat exchange between the compressed air from a compressor and the heating medium. The heat storage tank stores the heating medium heatexchanged by the first heat exchanger. The second heat exchanger performs heat exchange between the compressed air from an accumulator tank and the heating medium from the heat storage tank. The first power distributor distributes the generated power of the power generator to a power system and the heating unit. When the internal pressure of the accumulator tank reaches a predetermined pressure and the generated power is larger than the power demand, the controller supplies a part or all of the generated power to the heating unit by the first power distributor.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: August 18, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Yohei Kubo, Masatake Toshima, Makoto Nishimura, Masaki Matsukuma, Hiroki Saruta, Kanami Sakamoto
  • Patent number: 10655505
    Abstract: A compressor compresses air in such a manner that a motor is driven by renewable energy. An accumulator tank stores the air thus compressed. An expander is driven by the compressed air. A generator is mechanically connected to the expander. A first heat exchanger recovers compressed heat. A heat medium tank that stores a heat medium. A second heat exchanger that heats the compressed air. A first pump adjusts an amount of the heat medium to be supplied to the first heat exchanger. A control device controls the first pump to adjust the amount of heat medium to be supplied to the first heat exchanger so as to maintain the heat medium, which is stored in the heat medium tank, at a predetermined first temperature.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: May 19, 2020
    Assignee: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Masaki Matsukuma, Hiroki Saruta, Kanami Sakamoto
  • Publication number: 20200153275
    Abstract: A compressed air storage power generation device 1 is provided with: a motor 11 which is driven using input electric power; a compressor 10 which is mechanically connected with the motor and compresses air; a plurality of accumulator tank groups 20A, 20B, 20C, 20D which are in fluid connection with the compressor and in which compressed air obtained by the compressor is stored; a plurality of pressure sensors 21A, 21B, 21C, 21D which are provided in the accumulator tank groups and which measure pressures of the accumulator tank groups; an expander 30 which is in fluid connection with the accumulator tank groups and driven by means of compressed air supplied from the accumulator tank groups; a generator 31 which is mechanically connected with the expander; and a control unit 40 which, on the basis of the pressures of the respective accumulator tank groups measured by means of the pressure sensors, determines the order of the accumulator tank groups in which to store compressed air for charging, and determines
    Type: Application
    Filed: April 6, 2018
    Publication date: May 14, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Masaki MATSUKUMA, Hiroki SARUTA, Yuji MATSUO, Kanami SAKAMOTO
  • Publication number: 20200088095
    Abstract: A compressor, a first heat exchanger, a first heat storage unit, a pressure accumulation unit, a second heat exchanger, and a second heat storage unit are provided. The first heat storage unit and the second heat storage unit are connected by a first flow passage and a second flow passage. The first and second flow passages are connected by a third flow passage. A first on-off means is provided in a first region of the first flow passage and a second on-off means is provided in a second region. A third on-off means is provided in a third region of the second flow passage, and a fourth on-off means is provided in a fourth region. A driving means and a heating means are provided in the third flow passage.
    Type: Application
    Filed: March 15, 2018
    Publication date: March 19, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Yohei KUBO, Masaki MATSUKUMA, Yuji MATSUO, Takashi SATO, Ryo NAKAMICHI
  • Publication number: 20200083743
    Abstract: A compressed air energy storage generator includes a motor, a compressor, a pressure accumulator, an expander, a generator, an electric-motor inverter, a generator inverter, a feed command receiver, a discharge command receiver, and a controller. The controller includes a feed determination unit, a discharge determination unit, and an input and output adjustment unit, the feed determination unit being configured to determine whether a feed command value is smaller than minimum charge power, the discharge determination unit being configured to determine whether a discharge command value is smaller than minimum discharge power, the input and output adjustment unit being configured to control, when the feed determination unit determines that the feed command value is smaller than the minimum charge power or when the discharge determination unit determines that the discharge command value is smaller than the minimum discharge power, the inverters to simultaneously drive the motor and the generator.
    Type: Application
    Filed: April 10, 2018
    Publication date: March 12, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Takashi SATO, Ryo NAKAMICHI, Masaki MATSUKUMA, Hiroki SARUTA
  • Publication number: 20200063658
    Abstract: The compressed air energy storage power generation device includes a third heat exchanger and fourth heat exchangers. The third heat exchanger performs heat exchange between the air exhausted from the expander and the second heating medium to cool the second heating medium. The fourth heat exchanger performs heat exchange between the second heating medium cooled by the third heat exchanger and at least one of the lubricating oil to be supplied to the compressor or the first heating medium to be supplied to the first heat exchanger to cool the lubricating oil or the first heating medium.
    Type: Application
    Filed: February 10, 2017
    Publication date: February 27, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Yohei KUBO, Masatake TOSHIMA, Hiroki SARUTA, Masaki MATSUKUMA, Kanami SAKAMOTO
  • Publication number: 20200018230
    Abstract: This compressed air storage power generation device 10 is provided with: a power demand receiving unit 60 which receives in real-time the power demand value of consumer equipment 3; a power supply adjustment device 19 which adjusts the amount of power generated by a generator 15; and a control device which has a power generation amount control unit 17a for controlling the power supply adjustment device 19 so as to supply the consumer equipment 3 in a timely fashion with power corresponding to the power demand value received by the power demand receiving unit 60.
    Type: Application
    Filed: March 23, 2018
    Publication date: January 16, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Masaki MATSUKUMA, Ayaka NAGAHIRA