Patents by Inventor Shigenori INOUE
Shigenori INOUE 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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Patent number: 11755818Abstract: A non-transitory computer-readable recording medium stores a design document management program causing a computer to execute a process including: acquiring a plurality of design documents about a system; identifying a plurality of label items representing elements of the system based on appearance frequency information of character strings included in the plurality of design documents acquired; and generating structure information in which the plurality of label items are hierarchized based on appearance positions at which the character string corresponding to each of the plurality of label items identified appears in the plurality of design documents.Type: GrantFiled: October 15, 2021Date of Patent: September 12, 2023Assignee: FUJITSU LIMITEDInventor: Shigenori Inoue
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Publication number: 20220335231Abstract: A non-transitory computer-readable recording medium stores an information searching program causing a computer to execute processing of: in an information search using a trained machine learning model generated by machine learning using training data in a first language, when a search condition is in the first language, translating the search condition to a second language different from the first language; re-translating the search condition translated to the second language to the first language; and performing the information search by inputting the search condition re-translated to the first language to the machine learning model; and when the search condition is in a language different from the first language, translating the search condition to the first language, and performing the information search by inputting the search condition translated to the first language to the machine learning model.Type: ApplicationFiled: April 18, 2022Publication date: October 20, 2022Applicant: FUJITSU LIMITEDInventors: Syohei Oshio, Naohiro Kishishita, Shigenori INOUE, Masahiro NAKAJIMA, Daiki Hanawa
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Publication number: 20220335046Abstract: A non-transitory computer-readable recording medium stores an information generating program causing a computer to execute processing of: in an information search using a trained machine learning model generated by machine learning using training data in a first language, converting a search condition in a second language different from the first language to the search condition in the first language; searching information in the first language by inputting the search condition converted to the first language to the machine learning model; and generating training data with the search condition converted to the first language as a feature value and the searched information in the first language as a correct answer label.Type: ApplicationFiled: April 18, 2022Publication date: October 20, 2022Applicant: FUJITSU LIMITEDInventors: Syohei Oshio, Naohiro Kishishita, Shigenori Inoue, Masahiro Nakajima, Daiki Hanawa
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Publication number: 20220245325Abstract: A non-transitory computer-readable recording medium stores a design document management program causing a computer to execute a process including: acquiring a plurality of design documents about a system; identifying a plurality of label items representing elements of the system based on appearance frequency information of character strings included in the plurality of design documents acquired; and generating structure information in which the plurality of label items are hierarchized based on appearance positions at which the character string corresponding to each of the plurality of label items identified appears in the plurality of design documents.Type: ApplicationFiled: October 15, 2021Publication date: August 4, 2022Applicant: FUJITSU LIMITEDInventor: Shigenori INOUE
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Patent number: 10243365Abstract: Conventionally, optimum introduction assistance for devices including a FACTS device and a storage adapted to changes in impedance and a transmission capacity involved in an increase of renewable energy power supplies has not been achieved. Therefore, in order to solve the problem, the present invention provides a power system equipment introduction assistance device that calculates an introduction point of power system equipment coupled to a power system, the introduction assistance device including a calculating unit configured to calculate, on the basis of predetermined system information and information concerning the power system equipment scheduled to be introduced, a characteristic of the power system affecting the power system during the introduction of the power system equipment and calculate the introduction point of the power system equipment from a predetermined evaluation index related to the characteristic of the power system.Type: GrantFiled: May 27, 2015Date of Patent: March 26, 2019Assignee: Hitachi, Ltd.Inventors: Efrain Eduardo Tamayo Ruiz, Shuji Katoh, Shinya Oohara, Shigenori Inoue, Tohru Yoshihara
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Publication number: 20180159329Abstract: Conventionally, optimum introduction assistance for devices including a FACTS device and a storage adapted to changes in impedance and a transmission capacity involved in an increase of renewable energy power supplies has not been achieved. Therefore, in order to solve the problem, the present invention provides a power system equipment introduction assistance device that calculates an introduction point of power system equipment coupled to a power system, the introduction assistance device including a calculating unit configured to calculate, on the basis of predetermined system information and information concerning the power system equipment scheduled to be introduced, a characteristic of the power system affecting the power system during the introduction of the power system equipment and calculate the introduction point of the power system equipment from a predetermined evaluation index related to the characteristic of the power system.Type: ApplicationFiled: May 27, 2015Publication date: June 7, 2018Inventors: Efrain Eduardo TAMAYO RUIZ, Shuji KATOH, Shinya OOHARA, Shigenori INOUE, Tohru YOSHIHARA
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Patent number: 9917534Abstract: A power conversion device is provided which includes a plurality of series circuits each formed of a voltage source and a controlled current source. At least two of said series circuits formed of the voltage source and the controlled current source are connected in parallel. Further, parallel connection points of the series circuits connected in parallel form output terminals.Type: GrantFiled: August 26, 2016Date of Patent: March 13, 2018Assignee: HITACHI, LTD.Inventors: Shigenori Inoue, Shuji Katoh, Jun Narushima, Tetsuya Kato
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Publication number: 20160365807Abstract: A power conversion device is provided which includes a plurality of series circuits each formed of a voltage source and a controlled current source. At least two of said series circuits formed of the voltage source and the controlled current source are connected in parallel. Further, parallel connection points of the series circuits connected in parallel form output terminals.Type: ApplicationFiled: August 26, 2016Publication date: December 15, 2016Applicant: HITACHI, LTD.Inventors: Shigenori Inoue, Shuji Katoh, Jun Narushima, Tetsuya Kato
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Publication number: 20160294016Abstract: A nonaqueous secondary battery, a manufacturing method thereof, and an electrolyte. The battery includes a positive electrode, a negative electrode, a substrate and an electrolyte, in which respective end surfaces of the positive electrode and the negative electrode face each other at a distance, the positive electrode and the negative electrode are arranged in substantially the same plane, the substrate fixingly supports the positive electrode and the negative electrode, the electrolyte is present between the facing end surfaces of the positive electrode and the negative electrode, the electrolyte is involved in a battery reaction between the positive electrode and the negative electrode, and the electrolyte contains ion conductive inorganic solid electrolyte particles and a liquid electrolyte component.Type: ApplicationFiled: March 29, 2016Publication date: October 6, 2016Inventors: Takahiro ASAI, Kiyoshi KANAMURA, Hirokazu MUNAKATA, Shigenori INOUE
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Patent number: 9461560Abstract: A power conversion device is provided which includes a plurality of series circuits each formed of a voltage source and a controlled current source. At least two of said series circuits formed of the voltage source and the controlled current source are connected in parallel. Further, parallel connection points of the series circuits connected in parallel form output terminals.Type: GrantFiled: February 21, 2014Date of Patent: October 4, 2016Assignee: HITACHI, LTD.Inventors: Shigenori Inoue, Shuji Katoh, Jun Narushima, Tetsuya Kato
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Patent number: 9344020Abstract: A power conversion apparatus includes arms in each of which one or more unit converters each including a capacitor and capable of outputting an arbitrary voltage are connected in series, and a point P as a first node to which one end of the respective arms are Y-connected, and a point N as a second node to which a neutral terminal of the rotary electric machine is connected. The other end of the respective arms are connected to one ends of respective phase windings of a rotary electric machine.Type: GrantFiled: July 1, 2014Date of Patent: May 17, 2016Assignee: Hitachi, Ltd.Inventors: Shigenori Inoue, Shuji Katoh, Hironari Kawazoe, Osamu Tomobe, Toru Yoshihara, Kenta Watanabe
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Patent number: 9252684Abstract: A power conversion apparatus including a three-phase transformer having at least four three-phase windings, and three converter arms each configured by connecting one or plural unit converters each including a switching device and an energy storage element in series. A power source or a load is connected to a first three-phase winding of the transformer, three series circuits which connects second and third three-phase windings of the transformer, and the converter arms in series with each other are connected in parallel, the parallel connection point is a DC terminal, and a magnitude relationship between a coupling coefficient of the first and second three-phase windings, and a coupling coefficient of the first three- and third three-phase windings is equal to a magnitude relationship between a coupling coefficient of the fourth and second three-phase windings, and a coupling coefficient of the fourth and the third three-phase windings.Type: GrantFiled: January 21, 2014Date of Patent: February 2, 2016Assignee: HITACHI, LTD.Inventors: Shigenori Inoue, Shuji Katoh, Yasuhiro Kiyofuji, Makoto Kadowaki, Hiroyuki Fujita, Hideki Ogata
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Patent number: 9219426Abstract: A switching element of a power converter generates a low voltage, using a current flowing in the power converter, and supplies a power to drive itself. A switching element of a power converter for conversion from direct current into alternate current or from alternate current into direct current includes: a terminal and a terminal which are used in building the switching element itself in the power converter; a capacitor, a high-side controllable switch and a low-side controllable switch enabling outputting the voltage of the capacitor, the voltage being output between the terminal and the terminal, and a self-supply power source for supplying a power to drive the bi-directional chopper switching element itself, using a current flowing in the capacitor.Type: GrantFiled: February 8, 2013Date of Patent: December 22, 2015Assignee: Hitachi, Ltd.Inventors: Takayoshi Yamamoto, Masaya Ichinose, Akira Bando, Keiichi Yamashita, Shigenori Inoue, Toru Yoshihara, Yoshio Eguchi, Osamu Sakuchi, Shuji Katoh, Tomomichi Ito
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Patent number: 9214871Abstract: A power conversion device includes: a plurality of cascade-connection type single-phase power converters; and a central control unit that controls the plurality of the single-phase power converters, wherein each of the plurality of single-phase power converters has a single-phase power converter control unit, and the central control unit and the plurality of the single-phase power converter control units are connected via a communication means having a daisy-chain configuration, wherein the single-phase power converter control unit transmits and receives a control signal via the communication means having the daisy-chain configuration, as well as a specific pattern signal, other than a control signal frame, which can be distinguished from the control signal frame, and determines a communication error due to not receiving the specific pattern signal at the single-phase power converter control unit, or an inconsistency between the received signal and the specific pattern signal.Type: GrantFiled: October 25, 2011Date of Patent: December 15, 2015Assignee: Hitachi, Ltd.Inventors: Mitsuyoshi Tsuchiya, Shigenori Inoue, Tetsuya Kato, Tadashi Sodeyama
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Patent number: 9190930Abstract: A power conversion device includes at least two legs connected in parallel each of which includes at least two unit converters connected in series, wherein at least one of the legs is formed using at least two kinds of unit converters including a first type unit converter capable of outputting a unipolar voltage and a second type unit converter capable of outputting a bipolar voltage.Type: GrantFiled: December 6, 2012Date of Patent: November 17, 2015Assignee: Hitachi, Ltd.Inventors: Shigenori Inoue, Shuji Katoh
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Patent number: 9166492Abstract: A control apparatus for use with a voltage source converter includes legs, each of which is configured by a plurality of converter modules each having a capacitor. Each of the legs has a first terminal on a positive side and a second terminal on a negative side. The control apparatus is configured to create command pulses for operating the converter modules. The command pulses have a frequency that is a non-integer multiple of a frequency of a system voltage. The non-integer multiple may be, for example, 3.5.Type: GrantFiled: July 10, 2013Date of Patent: October 20, 2015Assignee: Hitachi, Ltd.Inventors: Takayoshi Yamamoto, Masaya Ichinose, Akira Bando, Shigenori Inoue, Toru Yoshihara
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Publication number: 20150008859Abstract: A power conversion apparatus includes arms in each of which one or more unit converters each including a capacitor and capable of outputting an arbitrary voltage are connected in series, and a point P as a first node to which one end of the respective arms are Y-connected, and a point N as a second node to which a neutral terminal of the rotary electric machine is connected. The other end of the respective arms are connected to one ends of respective phase windings of a rotary electric machine.Type: ApplicationFiled: July 1, 2014Publication date: January 8, 2015Applicant: HITACHI, LTD.Inventors: Shigenori INOUE, I, Shuji KATOH, Hironari KAWAZOE, Osamu TOMOBE, Toru YOSHIHARA, Kenta WATANABE
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Patent number: 8817503Abstract: Disclosed is a power conversion device, wherein among the optical fiber cables used in control/communication, at least the majority of high-voltage optical fiber cables with a dielectric strength against the output voltages of a plurality of cells can be eliminated and thus a low-voltage optical fiber cable with a dielectric strength against the output voltage of one cell can be used. Furthermore, here, the length required for the optical fiber cable can be reduced. A controller of the power conversion device comprising a plurality of cascade-connected cells comprises a central controller, and a cell controller with the same potential as each cell, the cell controller being installed in the vicinity of each cell, wherein the central controller and each cell controller are daisy-chained using an optical fiber cable.Type: GrantFiled: July 13, 2010Date of Patent: August 26, 2014Assignee: Hitachi, Ltd.Inventors: Shigenori Inoue, Shuji Katoh, Tetsuya Kato
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Publication number: 20140211528Abstract: A power conversion apparatus including a three-phase transformer having at least four three-phase windings, and three converter arms each configured by connecting one or plural unit converters each including a switching device and an energy storage element in series. A power source or a load is connected to a first three-phase winding of the transformer, three series circuits which connects second and third three-phase windings of the transformer, and the converter arms in series with each other are connected in parallel, the parallel connection point is a DC terminal, and a magnitude relationship between a coupling coefficient of the first and second three-phase windings, and a coupling coefficient of the first three- and third three-phase windings is equal to a magnitude relationship between a coupling coefficient of the fourth and second three-phase windings, and a coupling coefficient of the fourth and the third three-phase windings.Type: ApplicationFiled: January 21, 2014Publication date: July 31, 2014Applicant: HITACHI, LTD.Inventors: Shigenori INOUE, Shuji KATOH, Yasuhiro KIYOFUJI, Makoto KADOWAKI, Hiroyuki FUJITA, Hideki OGATA
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Patent number: 8792261Abstract: A power conversion device connected with a three-phase power system through a transformer, including unit converters cascade-connected so that reactors are unnecessary, and volume and weight are reduced. The secondary winding of the transformer is an open winding having six terminals. A first converter group, includes a circuit which has three converter arms, which are star-connected, connected to three of the terminals of the secondary winding. A second converter group, having three different converter arms which are star-connected, is connected to three other terminals of the secondary winding. A neutral point (the point where the star connection is made) of the first converter group, and a neutral point of the second converter group are made to be the output terminals of the power conversion device.Type: GrantFiled: February 24, 2010Date of Patent: July 29, 2014Assignee: Hitachi, Ltd.Inventors: Shigenori Inoue, Shuji Katoh, Jun Narushima, Tetsuya Kato