Patents by Inventor Koji Kudo

Koji Kudo 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: 10079501
    Abstract: A battery control device controlling an operation of a battery connected to a power system includes detection means that detects battery-related information showing a state of the battery, or a state of an interconnection point of the power system and the battery, first communication means that transmits a detection result of the detection means to an external device, and executes reception processing to receive operation control information to control the operation of the battery from the external device at a predetermined time interval, and control means that executes battery operation control processing to control the operation of the battery based on a state of the power system and based on the operation control information received by the first communication means, at a time interval shorter than the predetermined time interval.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: September 18, 2018
    Assignee: NEC Corporation
    Inventors: Koji Kudo, Hisato Sakuma
  • Patent number: 10069302
    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: Grant
    Filed: December 4, 2013
    Date of Patent: September 4, 2018
    Assignee: NEC Corporation
    Inventors: Hisato Sakuma, Koji Kudo, Hitoshi Yano, Kazuhiko Aoki, Yoshiho Yanagita, Eisuke Saneyoshi, Yuma Iwasaki, Ryo Hashimoto, Takahiro Toizumi
  • Patent number: 10056757
    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: Grant
    Filed: September 11, 2014
    Date of Patent: August 21, 2018
    Assignee: NEC Corporation
    Inventors: Hisato Sakuma, Koji Kudo, Hitoshi Yano, Ryo Hashimoto, Eisuke Saneyoshi, Takahiro Toizumi, Kosuke Homma, Alexander Viehweider, Katsuya Suzuki
  • Patent number: 10033214
    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: Grant
    Filed: August 26, 2014
    Date of Patent: July 24, 2018
    Assignee: NEC Corporation
    Inventors: Hitoshi Yano, Ryo Hashimoto, Hisato Sakuma, Koji Kudo, Eisuke Saneyoshi, Takahiro Toizumi
  • Patent number: 10003197
    Abstract: An energy management method for an energy supply system which includes at least an energy storage, a load and a generator with power dependent efficiency is provided. The method includes: calculating two time variant parameters indicating a discharge lower limit and an upper charge limit, respectively, of the energy storage, based on optimization using different kinds of prediction; and controlling, in a real time manner, charging and discharging of the energy storage and operation of the generator, with a certain priorities given to various power sources, such that state of charge of the energy storage is controlled within a region between the discharge lower limit and the upper charge limit. When a grid power is available, blackout duration probability function is predicted and used to calculate the discharge lower limit and the upper charge limit.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: June 19, 2018
    Assignee: NEC CORPORATION
    Inventors: Alexander Viehweider, Koji Kudo
  • Publication number: 20180159335
    Abstract: An electric power generation control device is provided with: a communication unit that receives an output upper-limit value in a power generation device group and a predicted amount of power generation of each power generation device that belongs to the power generation device group; and a determination unit that, on the basis of the output upper-limit value and the predicted amount of power generation of each power generation device, determines a first output upper-limit value of each power generation device that makes the sum total of the output of each power generation device equal to or less than the output upper-limit value.
    Type: Application
    Filed: August 28, 2015
    Publication date: June 7, 2018
    Applicant: NEC CORPORATION
    Inventors: Kosuke HOMMA, Koji KUDO, Katsuya SUZUKI, Noriaki KOBAYASHI
  • Patent number: 9946286
    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: Grant
    Filed: September 20, 2013
    Date of Patent: April 17, 2018
    Assignee: NEC CORPORATION
    Inventors: Ryo Hashimoto, Hitoshi Yano, Hisato Sakuma, Koji Kudo, Eisuke Saneyoshi, Yuma Iwasaki, Takahiro Toizumi
  • Patent number: 9941727
    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 a communication characteristics detection unit that, for each of the plurality of batteries, detects characteristics of communication paths between the batteries and the battery control system within the communication network. The battery control system includes a selection unit which selects, from among the plurality of batteries, each battery that has characteristics of communication paths within a predetermined communication characteristics range, as a regulating battery that is to be used for regulating electric power of the electric power system. The battery control system includes a control unit that supplies operation instructions that instructs the regulating batteries that were selected in the selection unit to perform a charging or discharging operation.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: April 10, 2018
    Assignee: NEC Corporation
    Inventors: Koji Kudo, Hitoshi Yano, Hisato Sakuma, Takayuki Shizuno, Toshiya Okabe
  • Patent number: 9912157
    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: Grant
    Filed: December 17, 2013
    Date of Patent: March 6, 2018
    Assignee: NEC Corporation
    Inventors: Hitoshi Yano, Ryo Hashimoto, Yuma Iwasaki, Eisuke Saneyoshi, Hisato Sakuma, Koji Kudo
  • Publication number: 20180041045
    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: October 5, 2017
    Publication date: February 8, 2018
    Inventors: Hisato SAKUMA, Koji Kudo, Hitoshi Yano, Yuma Iwasaki
  • Publication number: 20180041043
    Abstract: A power generation control device is provided with: a communication unit that receives output control information determined on the basis of a first index that relates to the output state at a power generation device group and a second index that relates to the output state at a predetermined power generation device; and a control unit that controls the output of the predetermined power generation device on the basis of the output control information.
    Type: Application
    Filed: March 4, 2015
    Publication date: February 8, 2018
    Inventors: Koji KUDO, Noriaki KOBAYASHI, Kosuke HOMMA, Katsuya SUZUKI
  • Patent number: 9881270
    Abstract: A time range setting unit (110) sets an operation startable time point at which an operation can be started and a target operation end time point which is the latest time point among time points at which the operation is to be ended, with respect to each of plural power demanding objects (20). A necessary operation time setting unit (120) sets a necessary operation time with respect to each of the plural power demanding objects (20). A shape information acquisition unit (130) acquires shape information from a schedule management device (40). The shape information indicates an assumed shape of a transition line that represents transition in the amount of supplied power in a target period.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: January 30, 2018
    Assignee: NEC Corporation
    Inventors: Ryo Hashimoto, Hitoshi Yano, Hisato Sakuma, Koji Kudo, Eisuke Saneyoshi, Takahiro Toizumi, Kosuke Homma, Yuma Iwasaki
  • Patent number: 9859735
    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: Grant
    Filed: February 28, 2014
    Date of Patent: January 2, 2018
    Assignee: NEC Corporation
    Inventors: Hisato Sakuma, Koji Kudo, Hitoshi Yano, Kazuhiko Aoki, Yoshiho Yanagita, Yuma Iwasaki, Ryo Hashimoto, Eisuke Saneyoshi, Takahiro Toizumi
  • Publication number: 20170371073
    Abstract: An object of the present invention is to improve the accuracy of prediction in a technique for predicting natural energy power generation amount, solar radiation amount or wind speed by using a statistical method based on machine learning. In order to achieve this object, provided is a prediction apparatus (10) including a feature value extraction unit (13) that extracts a feature value being a variation in time series from meteorological data from m (m is 2 or more) hours before a target time to the target time, and an estimation unit (first estimation unit (14)) that estimates a natural energy power generation amount, a solar radiation amount, or a wind speed at the target time based on the feature values over plural days.
    Type: Application
    Filed: November 18, 2015
    Publication date: December 28, 2017
    Applicant: NEC Corporation
    Inventors: Katsuya SUZUKI, Kosuke HOMMA, Koji KUDO
  • Patent number: 9849803
    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: Grant
    Filed: July 13, 2015
    Date of Patent: December 26, 2017
    Assignee: NEC CORPORATION
    Inventors: Yukiko Morioka, Hisato Sakuma, Koji Kudo
  • Patent number: 9843203
    Abstract: A battery control system, which controls operation of a plurality of batteries connected to an electric power system, the battery control system comprises: detecting means that detects a delay period of each battery of said plurality of batteries which represents a period that has elapsed after the battery control system supplies said each battery with an execution command for charging or discharging said each battery until said each 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 said plurality of batteries based on the frequency rate-of-change and the delay period of said each battery of said plurality of batteries; and command means for supplying the execution command to the adjustment batteries.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: December 12, 2017
    Assignee: NEC Corporation
    Inventors: Koji Kudo, Hisato Sakuma, Hitoshi Yano
  • Publication number: 20170338679
    Abstract: A supply-and-demand adjustment system, that utilizes characteristics of supply-and-demand adjustment apparatuses and precisely matches a total supply-and-demand adjustment amount with a required adjustment amount when performing a supply-and-demand adjustment.
    Type: Application
    Filed: August 8, 2017
    Publication date: November 23, 2017
    Applicant: NEC Corporation
    Inventors: Hisato SAKUMA, Koji KUDO, Hitoshi YANO, Kazuhiko AOKI, Yoshiho YANAGITA, Yuma IWASAKI, Ryo HASHIMOTO, Eisuke SANEYOSHI, Takahiro TOIZUMI
  • Patent number: 9812871
    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: Grant
    Filed: November 15, 2012
    Date of Patent: November 7, 2017
    Assignee: NEC Corporation
    Inventors: Hisato Sakuma, Koji Kudo, Hitoshi Yano, Yuma Iwasaki
  • Publication number: 20170317507
    Abstract: This control device includes: a reception unit that receives information that indicates characteristics of a power supply/demand adjustment process; and a determination unit that, on the basis of the information that indicates the characteristics of the power supply/demand adjustment process, determines as usage information to be used for the adjustment process the state of a power grid or an index that relates to an adjustment power amount that was received from a predetermined device.
    Type: Application
    Filed: October 8, 2015
    Publication date: November 2, 2017
    Inventor: Koji KUDO
  • Publication number: 20170264135
    Abstract: An object of the present invention is to set a demand schedule for performing highly efficient demand-supply adjustment of electric power, to deal with electric power demand.
    Type: Application
    Filed: November 18, 2015
    Publication date: September 14, 2017
    Applicant: NEC Corporation
    Inventors: Ryo HASHIMOTO, Hitoshi YANO, Hisato SAKUMA, Koji KUDO, Alexander VIEHWEIDER