Patents by Inventor Masako KIUCHI
Masako KIUCHI 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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Publication number: 20240088688Abstract: A storage battery management device according to one embodiment includes a hardware processor that causes a display device to display first remaining life information and second remaining life information. The first remaining life information indicates current remaining life of a storage battery system. The first remaining life information is calculated on the basis of a state of health (SOH) of each of multiple storage battery modules constituting the storage battery system. The second remaining life information indicates remaining life of the storage battery system and corresponds to a case where one or more of the multiple storage battery modules are replaced with one or more other storage battery modules. The second remaining life information is calculated on the basis of an SOH of each storage battery module not being replaced and an SOH of each of the one or more other storage battery modules.Type: ApplicationFiled: January 19, 2021Publication date: March 14, 2024Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Makoto IDE, Mami MIZUTANI, Yukitaka MONDEN, Masako KIUCHI, Takenori KOBAYASHI, Takahiro KASE, Kenji MITSUMOTO, Yoshihisa SUMIDA
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Publication number: 20240069106Abstract: A storage battery management device includes an acquisition unit, a selection unit, an estimation unit, and a display control unit. The acquisition unit acquires a battery characteristic and an operation condition of a storage battery device. The selection unit selects data values from a data value group of a data item in which variation in data value is caused out of data items included in the battery characteristic and the acquired operation condition. The estimation unit estimates, for each of the selected data values, a battery characteristic after operation corresponding to a case where the storage battery device is operated under the operation condition. The battery characteristic is estimated on the basis of the battery characteristic and the operation condition acquired by the acquisition unit. The display control unit displays the battery characteristic estimated by the estimation unit in a comparable state.Type: ApplicationFiled: January 20, 2021Publication date: February 29, 2024Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Yukitaka MONDEN, Makoto IDE, Masako KIUCHI, Mami MIZUTANI, Kenji MITSUMOTO, Takahiro KASE, Takenori KOBAYASHI, Yoshihisa SUMIDA
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Publication number: 20240055882Abstract: A storage battery control device includes a hardware processor functioning as an acquisition unit, a first calculation unit, and a control part. The acquisition unit acquires operation conditions of a storage battery system including a storage battery being chargeable and dischargeable. The first calculation unit calculates, as a first predicted value, a battery capacity of the storage battery in a predetermined period on the basis of the operation conditions acquired by the acquisition unit. The battery capacity corresponds to a case where the storage battery is operated under the operation conditions. The control part controls a charging voltage when the storage battery system charges the storage battery. The charging voltage is controlled on the basis of the first predicted value calculated by the first calculation unit.Type: ApplicationFiled: January 7, 2021Publication date: February 15, 2024Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Masako KIUCHI, Mami MIZUTANI, Takahiro KASE, Takenori KOBAYASHI, Makoto IDE, Yukitaka MONDEN, Kenji MITSUMOTO, Yoshihisa SUMIDA
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Battery capacity estimation device, battery capacity estimation method, and computer program product
Patent number: 11486931Abstract: A battery capacity estimation device in an embodiment includes one or more hardware processors configured to: acquire an alternating current power or an alternating current energy that is input to and output from a storage battery system via a direct current-alternating current converter, the storage battery system being capable of controlling charge and discharge; acquire a state of charge (SoC) of the storage battery system; and estimate a battery capacity of the storage battery system based on the acquired alternating current power or the acquired alternating current energy and the acquired SoC.Type: GrantFiled: July 23, 2020Date of Patent: November 1, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Masako Kiuchi, Mami Mizutani, Kenji Mitsumoto, Noriyuki Yamagishi, Toshiyuki Seto, Kenichi Wakasugi -
Patent number: 11221370Abstract: A remaining battery energy estimation device according to an embodiment includes a current corrector, an SOC calculator, a voltage estimator, an SOC correction amount determiner, and a current error estimator. The current corrector determines a corrected current value on the basis of a current value and a current correction amount of a storage battery. The SOC calculator calculates an estimated SOC value of the storage battery on the basis of the corrected current value and an SOC correction amount. The voltage estimator determines an estimated voltage value of the storage battery on the basis of a temperature value of the storage battery, the corrected current value, and the estimated SOC value. The SOC correction amount determiner determines the SOC correction amount on the basis of a comparison between a voltage value of the storage battery and the estimated voltage value. The current error estimator determines the current correction amount on the basis of the SOC correction amount.Type: GrantFiled: December 19, 2019Date of Patent: January 11, 2022Assignees: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions CorporationInventors: Masahiro Tohara, Masako Kiuchi, Shunsuke Kawachi, Mami Mizutani, Takenori Kobayashi
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Patent number: 11054475Abstract: A battery capacity estimation apparatus includes one or more hardware processors that: calculate a current integrated value by integrating electric currents of a secondary battery system whose capacity is to be estimated; calculate an SOC estimate value in a stabilization state where a change in SOC of a secondary battery per unit time is comparatively small; perform a regression analysis in which the current integrated value is defined as a dependent variable and the SOC estimate value is defined as an independent variable, the regression analysis being performed while correcting the current integrated value based on a value of a coefficient of determination so that a result of the regression analysis has predetermined accuracy; and estimate a capacity of the secondary battery system based on the result of the regression analysis.Type: GrantFiled: September 14, 2016Date of Patent: July 6, 2021Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Masahiro Tohara, Masako Kiuchi, Shunsuke Kawachi, Mami Mizutani, Takenori Kobayashi
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BATTERY CAPACITY ESTIMATION DEVICE, BATTERY CAPACITY ESTIMATION METHOD, AND COMPUTER PROGRAM PRODUCT
Publication number: 20210055351Abstract: A battery capacity estimation device in an embodiment includes one or more hardware processors configured to: acquire an alternating current power or an alternating current energy that is input to and output from a storage battery system via a direct current-alternating current converter, the storage battery system being capable of controlling charge and discharge; acquire a state of charge (SoC) of the storage battery system; and estimate a battery capacity of the storage battery system based on the acquired alternating current power or the acquired alternating current energy and the acquired SoC.Type: ApplicationFiled: July 23, 2020Publication date: February 25, 2021Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Masako KIUCHI, Mami MIZUTANI, Kenji MITSUMOTO, Noriyuki YAMAGISHI, Toshiyuki SETO, Kenichi WAKASUGI -
Patent number: 10714937Abstract: A voltage reactive power control device includes a bus voltage fluctuation extracting unit that extracts a bus voltage fluctuation from a voltage of a secondary-side bus, an RE component extracting unit that extracts a fluctuation component due to renewable energy power generation from the bus voltage fluctuation, a creating unit that creates a reactive power command value for suppressing the fluctuation component based on the bus voltage fluctuation component due to the renewable energy power generation extracted by the RE component extracting unit, and a control unit that executes the reactive power control on a battery system based on the reactive power command value. The RE component extracting unit extracts the fluctuation component due to the renewable energy power generation by eliminating the fluctuation components other than the fluctuation component due to the renewable energy power generation from the bus voltage fluctuation.Type: GrantFiled: March 4, 2016Date of Patent: July 14, 2020Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Yoshio Ebata, Takenori Kobayashi, Yoko Kosaka, Tsutomu Tanno, Mami Mizutani, Masako Kiuchi
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Patent number: 10714936Abstract: A system interconnecting facility is connected to a power system, and includes a plurality of power converters connected to the power system, a plurality of transformers provided between the power system and the power converters, a plurality of switches provided between the transformers and the power converters, and a controller that controls the opening and closing of the switch. The controller outputs, to the switches, open and close commands in so that the number of closed switches is out of a closed switch number range where a harmonic voltage of the system interconnecting facility increases, based on a harmonic voltage containing rate characteristic that is a relation between the number of closed switches and a harmonic voltage containing rate of the system interconnecting facility. The system interconnecting facility is capable of suppressing a harmonic voltage even if a circuit structure differs depending on a situation.Type: GrantFiled: February 25, 2016Date of Patent: July 14, 2020Assignees: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions CorporationInventors: Masayuki Kubota, Tsutomu Tanno, Mami Mizutani, Shinya Naoi, Masako Kiuchi, Midori Otsuki, Kazuyoshi Shimada
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Publication number: 20200124676Abstract: A remaining battery energy estimation device according to an embodiment includes a current corrector, an SOC calculator, a voltage estimator, an SOC correction amount determiner, and a current error estimator. The current corrector determines a corrected current value on the basis of a current value and a current correction amount of a storage battery. The SOC calculator calculates an estimated SOC value of the storage battery on the basis of the corrected current value and an SOC correction amount. The voltage estimator determines an estimated voltage value of the storage battery on the basis of a temperature value of the storage battery, the corrected current value, and the estimated SOC value. The SOC correction amount determiner determines the SOC correction amount on the basis of a comparison between a voltage value of the storage battery and the estimated voltage value. The current error estimator determines the current correction amount on the basis of the SOC correction amount.Type: ApplicationFiled: December 19, 2019Publication date: April 23, 2020Applicants: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions CorporationInventors: Masahiro TOHARA, Masako Kiuchi, Shunsuke Kawachi, Mami Mizutani, Takenori Kobayashi
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Publication number: 20200044451Abstract: A voltage reactive power control device includes a bus voltage fluctuation extracting unit that extracts a bus voltage fluctuation from a voltage of a secondary-side bus, an RE component extracting unit that extracts a fluctuation component due to renewable energy power generation from the bus voltage fluctuation, a creating unit that creates a reactive power command value for suppressing the fluctuation component based on the bus voltage fluctuation component due to the renewable energy power generation extracted by the RE component extracting unit, and a control unit that executes the reactive power control on a battery system based on the reactive power command value. The RE component extracting unit extracts the fluctuation component due to the renewable energy power generation by eliminating the fluctuation components other than the fluctuation component due to the renewable energy power generation from the bus voltage fluctuation.Type: ApplicationFiled: March 4, 2016Publication date: February 6, 2020Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Yoshio EBATA, Takenori KOBAYASHI, Yoko KOSAKA, Tsutomu TANNO, Mami MIZUTANI, Masako KIUCHI
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Publication number: 20190052079Abstract: A system interconnecting facility is connected to a power system, and includes a plurality of power converters connected to the power system, a plurality of transformers provided between the power system and the power converters, a plurality of switches provided between the transformers and the power converters, and a controller that controls the opening and closing of the switch. The controller outputs, to the switches, open and close commands in so that the number of closed switches is out of a closed switch number range where a harmonic voltage of the system interconnecting facility increases, based on a harmonic voltage containing rate characteristic that is a relation between the number of closed switches and a harmonic voltage containing rate of the system interconnecting facility. The system interconnecting facility is capable of suppressing a harmonic voltage even if a circuit structure differs depending on a situation.Type: ApplicationFiled: February 25, 2016Publication date: February 14, 2019Applicants: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions CorporationInventors: Masayuki KUBOTA, Tsutomu TANNO, Mami MIZUTANI, Shinya NAOI, Masako KIUCHI, Midori OTSUKI, Kazuyoshi SHIMADA
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Patent number: 9985467Abstract: A control device of a power storage apparatus according to an embodiment includes a wind speed acquiring device, a power generation output detector, a capacity detector, and a controller. The wind speed acquiring device acquires a wind speed. The power generation output detector detects a power generation output of a wind power generation apparatus connected to a power system. The capacity detector detects a remaining capacity of the power storage apparatus that stores at least a portion of a power in the power generation output and supplies at least a portion of the stored power to the power system. The controller controls storage and supply of the power to suppress a variation in a combined output obtained by combining the power generation output and the power stored or supplied by the power storage apparatus, based on the wind speed, the power generation output, and the remaining capacity.Type: GrantFiled: January 13, 2016Date of Patent: May 29, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Masako Kiuchi, Mami Mizutani, Toshimasa Yamada
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Publication number: 20160233690Abstract: A control device of a power storage apparatus according to an embodiment includes a wind speed acquiring device, a power generation output detector, a capacity detector, and a controller. The wind speed acquiring device acquires a wind speed. The power generation output detector detects a power generation output of a wind power generation apparatus connected to a power system. The capacity detector detects a remaining capacity of the power storage apparatus that stores at least a portion of a power in the power generation output and supplies at least a portion of the stored power to the power system. The controller controls storage and supply of the power to suppress a variation in a combined output obtained by combining the power generation output and the power stored or supplied by the power storage apparatus, based on the wind speed, the power generation output, and the remaining capacity.Type: ApplicationFiled: January 13, 2016Publication date: August 11, 2016Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Masako KIUCHI, Mami MIZUTANI, Toshimasa YAMADA