Patents by Inventor Hisato Sakuma

Hisato Sakuma 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: 9415699
    Abstract: An energy system having a plurality of storage batteries and renewable power supplies includes an information processor. Each of the storage batteries is individually set to a maximum SOC representing a charging limit and a minimum SOC representing a discharging limit. Each of the storage batteries is chargeable and dischargeable under the control of an external device and is capable of measuring SOC values. The information processor controls charging and discharging processes of the storage batteries individually to keep the storage batteries charged until SOC values acquired from the storage batteries reach the maximum SOC when the storage batteries are charged and to keep the storage batteries discharged until SOC values acquired from the storage batteries reach the minimum SOC when the storage batteries are discharged.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: August 16, 2016
    Assignee: NEC CORPORATION
    Inventors: Yukiko Morioka, Hisato Sakuma, Koji Kudo
  • Publication number: 20160226261
    Abstract: Acquisition unit 184 acquires an adjustment period in which power supply and demand is adjusted, and adjustment power which is power to be adjusted in the adjustment period. Adjustment target determining unit 185 requests an adjustment target storage battery to be charged or discharged at a predetermined electricity rate in the adjustment period and determines, based on the adjustment power, adjustment target storage batteries from among the storage batteries that have responded to the request. In the adjustment period, control unit 186 causes the adjustment target storage batteries to charge or discharge electricity at the predetermined electricity rate and causes a non-adjusted storage battery that is different from the adjustment target storage battery to charge or discharge electricity at an electricity rate different from the predetermined electricity rate.
    Type: Application
    Filed: August 26, 2014
    Publication date: August 4, 2016
    Applicant: NEC CORPORATION
    Inventors: Hitoshi YANO, Ryo HASHIMOTO, Hisato SAKUMA, Koji KUDO, Eisuke SANEYOSHI, Takahiro TOIZUMI
  • Publication number: 20160226249
    Abstract: A control device for controlling the operation of a supply and demand adjustment device that is connected to a power grid includes: detection means for detecting the state of the supply and demand adjustment device; communication means for transmitting the detection result of the detection means to an external device and receiving from the external device operation control information for controlling the operation of the supply and demand adjustment device; comprehension means for receiving and comprehending an adjustment power amount transmitted by bidirectional communication or one-way communication; and control means for, based on the adjustment power amount and the operation control information, controlling the operation of the supply and demand adjustment device.
    Type: Application
    Filed: September 11, 2014
    Publication date: August 4, 2016
    Inventors: Hisato SAKUMA, Koji KUDO, Hitoshi YANO, Ryo HASHIMOTO, Eisuke SANEYOSHI, Takahiro TOIZUMI, Kosuke HOMMA, Alexander VIEHWEIDER, Katsuya SUZUKI
  • Patent number: 9385540
    Abstract: A battery control system, which controls operation of a plurality of batteries connected to an electric power system, comprises: detecting means that detects a delay period of each of the batteries which represents a period that has elapsed after the battery control system supplies the battery with an execution command for charging or discharging the battery until the battery operates according to the execution command; measuring means that measures a frequency rate-of-change of electric power of the electric power system; selecting means that selects adjustment batteries for adjusting the electric power of the electric power system from the batteries based on the frequency rate-of-change and the delay period of each of the batteries; and command means for supplying the execution command to the adjustment batteries.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: July 5, 2016
    Assignee: NEC Corporation
    Inventors: Koji Kudo, Hisato Sakuma, Hitoshi Yano
  • Patent number: 9379549
    Abstract: In a predetermined interval, electric power that is generated by power-source equipment is charged to a storage device and the amount of electric power that is accumulated in the storage device is reported from a communication device to a device that is provided to an electric power provider or a consumer. After the passage of a predetermined time interval, the amount of electric power that was previously reported to the device that is provided to the electric power provider or the consumer is discharged from the storage device and supplied to the electric power distribution system.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: June 28, 2016
    Assignee: NEC CORPORATION
    Inventors: Hisato Sakuma, Koji Kudo, Hiroo Hongo, Ryosuke Kuribayashi
  • Publication number: 20160164329
    Abstract: In order to solve the problem of a power grid becoming unstable due to a sharp increase in demand for electric power, the present invention provides a power control system to control the supply of electric power to a load or a storage battery in which the time period for supplying electric power is regulated. A power control system (101) of the present invention includes a receiving means (102) for acquiring power supply information including the amount of electric power to be supplied to other loads or storage batteries and a time period to supply electric power and, a determining means (105) for determining a time period to supply electric power to the load or storage battery based on the power supply information. Supplying electric power supply to the load or storage battery is performed in the time period determined by the determining means, so as to prevent timing congestion for supplying electric power.
    Type: Application
    Filed: July 2, 2014
    Publication date: June 9, 2016
    Applicant: NEC CORPORATION
    Inventors: Ryo HASHIMOTO, Hitoshi YANO, Hisato SAKUMA, Koji KUDO, Eisuke SANEYOSHI, Takahiro TOIZUMI
  • Publication number: 20160154038
    Abstract: Provided is a monitoring apparatus including an acquisition unit that acquires first time-series data which is time-series data of a measured value and/or a feature amount regarding an electrical device group, and a registration and updating unit that, when a difference in values between a pre-state-change data value which is any one of a data value at a first point in time in the first time-series data and a statistic of a plurality of data values from a point in time earlier than the first point in time by a predetermined period of time to the first point in time and a post-state-change data value which is any one of a data value at a second point in time later than the first point in time and a statistic of a plurality of data values from the second point in time to a point in time later than the second point in time by a predetermined period of time satisfies a predetermined condition, stores a feature amount extracted from any waveform data of a total current consumption, a total power consumption, and a
    Type: Application
    Filed: July 7, 2014
    Publication date: June 2, 2016
    Applicant: NEC CORPORATION
    Inventors: Takahiro TOIZUMI, Eisuke SANEYOSHI, Koji KUDO, Hitoshi YANO, Ryo HASHIMOTO, Yuma IWASAKI, Hisato SAKUMA
  • Publication number: 20160134145
    Abstract: A supply and demand adjustment system, that utilizes characteristics of a supply-and-demand adjustment apparatuses and precisely matches the total supply-and-demand adjustment amount with a required adjustment amount, when adjusting supply and demand, is provided.
    Type: Application
    Filed: February 28, 2014
    Publication date: May 12, 2016
    Applicant: NEC Corporation
    Inventors: Hisato SAKUMA, Koji KUDO, Hitoshi YANO, Kazuhiko AOKI, Yoshiho YANAGITA, Yuma IWASAKI, Ryo HASHIMOTO, Eisuke SANEYOSHI, Takahiro TOIZUMI
  • Publication number: 20160006248
    Abstract: A power flow control system is provided that is capable of improving the reliability of controlling power flow fluctuation and creating wide applicability for systems that control power flow fluctuation. A power-varying device (101) varies the distribution line power amount, which is a value of the power flow that flows in a distribution line (112) to which is connected a plurality of power sources (111) that each generate power. A measurement device (102) measures an index value relating to the total generated power amount, which is the sum total of the amount of power generated by each of the power sources. A calculation device (103) estimates the total generated power amount from the index value, and according to the estimation result, regulates the amount of change in the distribution line power amount that is changed by the power-varying device.
    Type: Application
    Filed: December 4, 2013
    Publication date: January 7, 2016
    Inventors: Hisato SAKUMA, Koji KUDO, Hitoshi YANO, Kazuhiko AOKI, Yoshiho YANAGITA, Eisuke SANEYOSHI, Yuma IWASAKI, Ryo HASHIMOTO, Takahiro TOIZUMI
  • Publication number: 20160006246
    Abstract: An energy management system and an energy management method enable an improvement of the balance between power supply and demand. A storage battery (52) is connected to a power line (42) that transmits outside power. A storage battery controller (54) receives a control signal indicating a reduced use period during which the consumption of the outside power by a consumer apparatus (43) connected to the power line (42) is to be reduced, acquires an index value that has a correlation with the demand for outside power, and on the basis of the control signal and the index value, adjusts the amount of charging/discharging of the storage battery (52).
    Type: Application
    Filed: December 17, 2013
    Publication date: January 7, 2016
    Applicant: NEC Corporation
    Inventors: Hitoshi YANO, Ryo HASHIMOTO, Yuma IWASAKI, Eisuke SANEYOSHI, Hisato SAKUMA, Koji KUDO
  • Publication number: 20150314701
    Abstract: An energy system includes an electric device that consumes electric power, a plurality of storage batteries that supplies stored electric power to the electric device, each of the storage batteries being chargeable and dischargeable under the control of an external device, and an information processor that divides the plurality of storage batteries into families which includes the storage batteries having similar charging and discharging characteristics, and that controls the timings to charge and discharge the storage batteries in the family.
    Type: Application
    Filed: July 13, 2015
    Publication date: November 5, 2015
    Inventors: Yukiko Morioka, Hisato Sakuma, Koji Kudo
  • Publication number: 20150220098
    Abstract: A time point range setting unit (110) sets an operation startable time point when an operation is startable, and an operation end target time point which is a latest time point among time points when the operation is to be ended, with respect to each of plural power-consuming bodies (20). A necessary operation time setting unit (120) sets a necessary operation time with respect to each of the plural power-consuming bodies (20). A shape information obtaining unit (130) obtains shape information from a schedule management apparatus (40). The shape information represents an assumed shape of a transition line indicating transition in the amount of power supplied in a target period.
    Type: Application
    Filed: September 20, 2013
    Publication date: August 6, 2015
    Inventors: Ryo Hashimoto, Hitoshi Yano, Hisato Sakuma, Koji Kudo, Eisuke Saneyoshi, Yuma Iwasaki, Takahiro Toizumi
  • Publication number: 20150012150
    Abstract: A regulating-device-control system for controlling the operation of regulating devices for regulating the balance between electric power supply and demand includes: memory means storing, for each regulating device, correlation information expressing correlation of a state of the regulating device, an amount of power allotted to the regulating device, and an amount of variability in performance of the regulating device; determination means receiving state information that expresses the state of each regulating device and electric power information that expresses an amount of regulated power required for regulating the balance between electric power supply and demand, and, based on the correlation information, the state information, and the electric power information, determining the amount of electric power to be allotted to each regulating device such that the total value of the amount of variability in performance of each of the regulating devices is minimized under conditions in which the state of each regu
    Type: Application
    Filed: November 15, 2012
    Publication date: January 8, 2015
    Inventors: Hisato Sakuma, Koji Kudo, Hitoshi Yano, Yuma Iwasaki
  • Publication number: 20150002100
    Abstract: A battery control system that communicates by way of a communication network with a plurality of batteries that are connected to an electric power system includes: communication characteristics detection means that detects characteristics of communication paths between the batteries and the battery control system for each of the plurality of batteries; selection means that, based on the detection results of the communication characteristics detection means, selects from among the plurality of batteries each battery that uses a communication path having characteristics within a predetermined range of communication characteristics as a candidate of a regulating battery that is to be used for regulating the electric power of the electric power system, and that selects regulating batteries from among candidates of regulating batteries based on predetermined conditions; and control means that supplies operation instructions that instruct the regulating batteries to charge or discharge.
    Type: Application
    Filed: August 8, 2012
    Publication date: January 1, 2015
    Applicant: NEC CORPORATION
    Inventors: Koji Kudo, Hitoshi Yano, Hisato Sakuma, Takayuki Shizuno, Toshiya Okabe
  • Publication number: 20140239913
    Abstract: A battery control system, which controls operation of a plurality of batteries connected to an electric power system, comprises: detecting means that detects a delay period of each of the batteries which represents a period that has elapsed after the battery control system supplies the battery with an execution command for charging or discharging the battery until the battery operates according to the execution command; measuring means that measures a frequency rate-of-change of electric power of the electric power system; selecting means that selects adjustment batteries for adjusting the electric power of the electric power system from the batteries based on the frequency rate-of-change and the delay period of each of the batteries; and command means for supplying the execution command to the adjustment batteries.
    Type: Application
    Filed: August 8, 2012
    Publication date: August 28, 2014
    Applicant: NEC CORPORATION
    Inventors: Koji Kudo, Hisato Sakuma, Hitoshi Yano
  • Publication number: 20140217989
    Abstract: A battery control system for controlling operation of a part of a plurality of batteries connected to an electric power system includes: detection that detects a battery characteristic of each of the plurality of batteries; selection that selects, as candidates for an adjustment battery used to adjust power of the power system, batteries, each having a characteristic within a predetermined range of the battery characteristic, from the plurality of batteries, and selects the adjustment battery on the basis of a predetermined condition from the candidates for the adjustment battery; and control that outputs, to the adjustment battery, an operation instruction instructing a charge or discharge operation.
    Type: Application
    Filed: July 17, 2012
    Publication date: August 7, 2014
    Applicant: NEC CORPORATION
    Inventors: Koji Kudo, Hisato Sakuma, Hitoshi Yano
  • Publication number: 20130311000
    Abstract: The HEMS of each consumer transmits the amount of surplus electricity that is expected by to be generated by a PV system, and/or the amount of electric power that is needed by a controllable load, in a predetermined time slot on a predetermined date, to a server apparatus. The server apparatus, based on the notified amount of surplus electricity and the amount of electric power that is needed by the controllable load, combines a first consumer and a second consumer so that the amount of electric power needed by the controllable load will be equal to or greater than the amount of surplus electricity. Then, under the control the HEMS of the second consumer, the surplus electricity that is generated by the first consumer is consumed by each controllable load.
    Type: Application
    Filed: November 15, 2011
    Publication date: November 21, 2013
    Applicant: NEC CORPORATION
    Inventors: Koji Kudo, Hisato Sakuma, Hitoshi Yano
  • Publication number: 20130184894
    Abstract: An electric power grid control system is provided with: distributed generators connected to an electric power grid; and voltage measurement units that measure voltage at connection points of the distributed generators to the electric power grid. When voltage at a connection point to the electric power grid deviates from a predetermined acceptable range, a centralized control device equally allocates a voltage adjustment amount for returning the voltage to the acceptable range to all distributed generators belonging to a predetermined group that was set in advance. Distribution processing devices cause the distributed generators to adjust voltage at the connection points in accordance with the voltage adjustment amount allocated from the centralized control device.
    Type: Application
    Filed: November 8, 2011
    Publication date: July 18, 2013
    Applicant: NEC CORPORATION
    Inventors: Hisato Sakuma, Koji Kudo, Hitoshi Yano
  • Publication number: 20130009605
    Abstract: A first threshold that is lower than a progressively deteriorating SOC that is an SOC in which a battery performance of the lithium ion secondary battery deteriorates when the lithium ion secondary battery is stored and a second threshold that is greater than the progressively deteriorating SOC are preset.
    Type: Application
    Filed: February 17, 2011
    Publication date: January 10, 2013
    Applicant: NEC CORPORATION
    Inventors: Hiroo Hongo, Koji Kudo, Hisato Sakuma, Ryosuke Kuribayashi
  • Publication number: 20130009485
    Abstract: In a predetermined interval, electric power that is generated by power-source equipment is charged to a storage device and the amount of electric power that is accumulated in the storage device is reported from a communication device to a device that is provided to an electric power provider or a consumer. After the passage of a predetermined time interval, the amount of electric power that was previously reported to the device that is provided to the electric power provider or the consumer is discharged from the storage device and supplied to the electric power distribution system.
    Type: Application
    Filed: February 14, 2011
    Publication date: January 10, 2013
    Applicant: NEC CORPORATION
    Inventors: Hisato Sakuma, Koji Kudo, Hiroo Hongo, Ryosuke Kuribayashi