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公开(公告)号：US11428442B2
公开(公告)日：2022-08-30
申请号：US16975918
申请日：2019-03-19
Applicant: NEC Corporation
Inventor： Hisato Sakuma , Koichi Todoroki , Masaki Chiba , Takafumi Natsumeda , Minoru Yoshikawa
Abstract: A cooling device includes a first evaporation unit, a second evaporation unit, a first condensation unit, a second condensation unit, common piping, a compressor, an expansion valve, a first valve, and a second valve. The common piping combines liquid-phase refrigerant flowing from the first condensation unit and liquid-phase refrigerant flowing from the second condensation unit. The first valve adjusts the liquid-phase refrigerant amount flowing into the first evaporation unit. The second valve adjusts the liquid-phase refrigerant amount flowing into the second evaporation unit. In addition, the pressure inside the common pipe is greater than the respective pressures inside the first evaporation unit and the second evaporation unit.
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公开(公告)号：US10298056B2
公开(公告)日：2019-05-21
申请号：US15033612
申请日：2014-10-29
Applicant: NEC Corporation
Inventor： Koji Kudo , Hitoshi Yano , Ryo Hashimoto , Hisato Sakuma
Abstract: A power control system includes an acquisition unit that acquires information indicating the amount of power demand that is used by a consumer according to predetermined information that prompts adjustment of the power demand, and a control unit that controls a predetermined apparatus in accordance with a target demand amount and the information indicating the power demand amount.
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公开(公告)号：US11002773B2
公开(公告)日：2021-05-11
申请号：US14905585
申请日：2014-07-07
Applicant: NEC Corporation
Inventor： Takahiro Toizumi , Eisuke Saneyoshi , Koji Kudo , Hitoshi Yano , Ryo Hashimoto , Yuma Iwasaki , Hisato Sakuma
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 total input voltage of the electrical device group corresponding to the pre-state-change data value and the post-state-change data value which satisfy the predetermined condition, in a feature amount storage unit.
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公开(公告)号：US10181737B2
公开(公告)日：2019-01-15
申请号：US15671248
申请日：2017-08-08
Applicant: NEC Corporation
Inventor： Hisato Sakuma , Koji Kudo , Hitoshi Yano , Kazuhiko Aoki , Yoshiho Yanagita , Yuma Iwasaki , Ryo Hashimoto , Eisuke Saneyoshi , Takahiro Toizumi
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. The supply-and-demand adjustment system comprises a central control apparatus and one or more supply-and-demand adjustment apparatuses, the central control apparatus includes a state collection unit that collects information with regard to a state of each supply-and-demand adjustment apparatus, an allocation band calculation unit that calculates a frequency band and an intensity of a fluctuation of a supply-and-demand adjustment to be allocated to each supply-and-demand adjustment apparatus based on the information of the state, and an adjustment amount calculation unit that calculates a supply-and-demand adjustment amount for each supply-and-demand adjustment apparatus based on the frequency band and the intensity of the fluctuation of the supply-and-demand adjustment to be allocated to said each supply-and-demand adjustment apparatus.
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公开(公告)号：US20150314701A1
公开(公告)日：2015-11-05
申请号：US14797837
申请日：2015-07-13
Applicant: NEC Corporation
Inventor： Yukiko Morioka , Hisato Sakuma , Koji Kudo
CPC classification number: B60L11/1862 , H01M10/441 , H01M10/482 , H02J3/383 , H02J3/386 , H02J7/0014 , H02J7/0016 , H02J7/0021 , H02J7/007 , H02J7/34 , Y02E10/563 , Y02E10/763 , Y10T307/32
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.
Abstract translation: 能量系统包括消耗电力的电气设备，向电气设备供应储存的电力的多个蓄电池，每个蓄电池在外部设备的控制下是可充电和放电的;以及信息处理器，其将 所述多个蓄电池成为具有类似充放电特性的蓄电池的系列，并且控制对家庭中的蓄电池进行充放电的定时。
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Patent Agency Ranking
6.发明授权公开(公告)号：US11903174B2
公开(公告)日：2024-02-13
申请号：US17440328
申请日：2019-03-18
Applicant: NEC Corporation
Inventor： Nirmal Singh Rajput , Yoshinori Miyamoto , Hisato Sakuma , Minoru Yoshikawa
CPC classification number: H05K7/20836 , F24F11/63 , G05B15/02 , H05K7/20745
Abstract: A system (20) for controlling an air conditioner (12) includes a plurality of pressure sensors (19) and a controller (13). Each of the pressure sensors (19) is positioned at an air inlet (15) of each of the racks (11). The controller (13) is configured to receive pressure values from the pressure sensors (19) and control an airflow rate of the cooling air supplied from the air conditioner (12) based on the pressure values. The controller (13) is configured to set a target pressure value for each pressure sensor (19) (S300), acquire a current pressure value for each pressure sensor (S401), calculate a pressure drop value for each pressure sensor (19) between the current pressure value and the target pressure value (S402), and adjust the airflow rate based on a maximum value among the plurality of the pressure drop values (S403 to S410).
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公开(公告)号：US11363744B2
公开(公告)日：2022-06-14
申请号：US16643896
申请日：2017-09-06
Applicant: NEC Corporation
Inventor： Minoru Yoshikawa , Hisato Sakuma , Yoshinori Miyamoto , Masaki Chiba
IPC: H05K7/20
Abstract: When an enclosed space is formed, by at least one of surfaces forming an exterior shape of a shielding member and an intake or exhaust surface among surfaces forming an exterior shape of heat-generating housings, in such a way that a taken-in airflow and an exhausted airflow of the heat-generating housings installed in at least two rows can be separated or substantially separated, a cooling system includes: a duct formed to be able to separate or substantially separate a first airflow and a second airflow being intake/exhaust of a specific heat-generating housing among the heat-generating housings, and heat-generating housings other than the specific heat-generating housing, respectively; and a cooling enhancement unit enhancing cooling for the specific heat-generating housing by acting on the first airflow, thereby avoiding occurrence of a hot spot due to a high-heat-generating housing, in a system building an air-conditioning environment such as aisle capping.
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公开(公告)号：US11343946B2
公开(公告)日：2022-05-24
申请号：US16479630
申请日：2017-03-30
Applicant: NEC Corporation
Inventor： Arihiro Matsunaga , Koichi Todoroki , Hisato Sakuma , Minoru Yoshikawa
Abstract: A cooling system including a vaporizer configured to absorb heat due to a liquid-phase refrigerant being vaporized, a condenser configured to discharge heat due to a refrigerant in a gaseous phase state being liquefied, a resistance body provided in a middle of a pipe passage ranging from the vaporizer to the condenser and applying a resistance to the refrigerant, state detection sensors provided in the pipe passage on an upstream and downstream sides of the resistance body and detecting a state of the refrigerant flowing through each side inside the pipe passage, and a flow rate controller configured to detect droplets in the refrigerant flowing through the pipe passage on the basis of a difference between detection values of the state detection sensors which are detected on the upstream and downstream sides of the resistance body, and controls a flow rate of the refrigerant on the basis of detection results.
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公开(公告)号：US10403936B2
公开(公告)日：2019-09-03
申请号：US15542511
申请日：2016-01-15
Applicant: NEC Corporation
Inventor： Kenji Kobayashi , Masato Yano , Suguru Watanabe , Hisato Sakuma , Koji Kudo
Abstract: A storage cell control system configured to perform charge/discharge control for a plurality of storage cells under control based on a power adjustment request from a power system includes: a power storage capacity calculating means configured to calculate a current power storage capacity of the storage cell based on storage cell information of the storage cell; a target power storage capacity setting means configured to set a target power storage capacity in stopping an operation of the storage cell; a capacity degradation speed calculating means configured to calculate a current capacity degradation speed and a target capacity degradation speed with respect to each power storage capacity by applying the current power storage capacity and the target power storage capacity to capacity degradation speed correlation information set in advance; and a power distributing means configured to distribute power to the plurality of storage cells in such a manner that when it is assumed that t is an elapsed time from start of operation, a capacity degradation amount DSOCvaried(t) is a time integral value of a capacity degradation speed in a case where the capacity degradation speed varies according to a power storage capacity, and a capacity degradation amount DSOCfixed(t) is a time integral value of a capacity degradation speed in a case where the capacity degradation speed is fixed regardless of a power storage capacity, a capacity degradation amount minimization condition: a capacity degradation amount DSOCvaried(t)≤a capacity degradation amount DSOCfixed(t) is satisfied.
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10.发明授权公开(公告)号：US10079501B2
公开(公告)日：2018-09-18
申请号：US14374958
申请日：2014-02-06
Applicant: NEC Corporation
Inventor： Koji Kudo , Hisato Sakuma
CPC classification number: H02J7/0068 , H02J3/32 , H02J3/382 , H02J7/0047 , H02J7/007 , H02J7/35 , H02J2007/005 , Y02E70/30
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.
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