Patents by Inventor Hidehiko Sugimoto
Hidehiko Sugimoto 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: 10298148Abstract: Provided are: a smoothing capacitor connected in parallel to the DC power source; a bridge circuit including switching elements for converting DC power to AC power, flywheel diodes connected in reversely parallel, and flywheel-and-separation diodes connected in series to the flywheel diodes and serving concurrently as flywheel and separation diodes; an interconnection reactor on an output side, provided on AC output lines connecting the bridge circuit and an AC power source; and a separation circuit for separating the smoothing capacitor and the interconnection reactor from each other during a flywheel period of the flywheel diodes. The separation circuit includes separation switching elements and the flywheel-and-separation diodes. The separation switching elements are respectively connected between the two AC output lines and two series connection points between the flywheel diodes and the flywheel-and-separation diodes, so as to short-circuit the AC output lines.Type: GrantFiled: February 16, 2016Date of Patent: May 21, 2019Assignee: TABUCHI ELECTRIC CO., LTD.Inventor: Hidehiko Sugimoto
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Patent number: 9906070Abstract: The present system 1 includes a distributed power source 2, a storage battery 4, a bidirectional inverter 7 having a smoothing capacitor 6 on its DC side, and a control section 10 for controlling the entire system, and supplies AC power to a load 9 while being interconnected with a power system 8. When active power supplied from the distributed power source 2 and/or the storage battery 4 to the smoothing capacitor 6 is equal to or greater than active power of load power, the control section 10 controls a power factor of inverter output current outputted from the bidirectional inverter 7 so as to coincide with a power factor of load current flowing to the load 9.Type: GrantFiled: November 19, 2015Date of Patent: February 27, 2018Assignee: Tabuchi Electric Co., Ltd.Inventor: Hidehiko Sugimoto
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Publication number: 20160241043Abstract: Provided are: a smoothing capacitor connected in parallel to the DC power source; a bridge circuit including switching elements for converting DC power to AC power, flywheel diodes connected in reversely parallel, and flywheel-and-separation diodes connected in series to the flywheel diodes and serving concurrently as flywheel and separation diodes; an interconnection reactor on an output side, provided on AC output lines connecting the bridge circuit and an AC power source; and a separation circuit for separating the smoothing capacitor and the interconnection reactor from each other during a flywheel period of the flywheel diodes. The separation circuit includes separation switching elements and the flywheel-and-separation diodes. The separation switching elements are respectively connected between the two AC output lines and two series connection points between the flywheel diodes and the flywheel-and-separation diodes, so as to short-circuit the AC output lines.Type: ApplicationFiled: February 16, 2016Publication date: August 18, 2016Applicant: TABUCHI ELECTRIC CO., LTD.Inventor: Hidehiko SUGIMOTO
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Publication number: 20160149413Abstract: The present system 1 includes a distributed power source 2, a storage battery 4, a bidirectional inverter 7 having a smoothing capacitor 6 on its DC side, and a control section 10 for controlling the entire system, and supplies AC power to a load 9 while being interconnected with a power system 8. When active power supplied from the distributed power source 2 and/or the storage battery 4 to the smoothing capacitor 6 is equal to or greater than active power of load power, the control section 10 controls a power factor of inverter output current outputted from the bidirectional inverter 7 so as to coincide with a power factor of load current flowing to the load 9.Type: ApplicationFiled: November 19, 2015Publication date: May 26, 2016Applicant: TABUCHI ELECTRIC CO., LTD.Inventor: Hidehiko SUGIMOTO
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Patent number: 8354907Abstract: Superconducting coil assemblies (100) in which a plurality of coil units (110) composed of superconducting material are arranged coaxial to the same direction, and including magnetic field adjusting members (121) composed of ferrite, powder metallurgical core, or permendur powder, which have higher magnetic permeability than said superconducting material and are provided in the vicinities of said coil units.Type: GrantFiled: August 5, 2009Date of Patent: January 15, 2013Assignee: IHI CorporationInventors: Atsuko Fukaya, Tomoya Oota, Hidehiko Sugimoto
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Patent number: 8022797Abstract: This superconducting coil apparatus includes: a cylindrical coil container which has an inner circumferential surface and an outer circumferential surface; a superconducting coil which is stored in the coil container to be cooled so that a superconducting member is wound on the inner circumferential surface; and a columnar magnetic body which is fitted to the inner circumferential surface of the coil container.Type: GrantFiled: June 20, 2007Date of Patent: September 20, 2011Assignees: IHI Corporation, Sumitomo Electric Industries, Ltd.Inventors: Toshio Takeda, Hidehiko Sugimoto, Toru Okazaki
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Patent number: 7977844Abstract: An inductor-type synchronous machine having an axial gap structure, which has a shaft portion at the center thereof, the machine includes: a field-side stator which has a yoke made of a magnetic material and a field body protruding from the yoke in an axial direction of the shaft portion to form an N pole and an S pole in a radial direction; a rotor which has N pole inductors disposed so as to be opposed to the N pole formed by the field body and S pole inductors disposed so as to be opposed to the S pole formed by the field body; and an armature-side stator in which an armature coil is disposed so as to be opposed to the N pole inductors and the S pole inductors.Type: GrantFiled: June 20, 2007Date of Patent: July 12, 2011Assignees: IHI Corporation, Sumitomo Electric Industries, Ltd.Inventors: Toshio Takeda, Tomoya Oota, Hiroyuki Togawa, Hidehiko Sugimoto, Toru Okazaki
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Publication number: 20110140817Abstract: Superconducting coil assemblies (100) in which a plurality of coil units (110) composed of superconducting material are arranged coaxial to the same direction, and including magnetic field adjusting members (121) composed of ferrite, powder metallurgical core, or permendur powder, which have higher magnetic permeability than said superconducting material and are provided in the vicinities of said coil units.Type: ApplicationFiled: August 5, 2009Publication date: June 16, 2011Inventors: Atsuko Fukaya, Tomoya Oota, Hidehiko Sugimoto
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Patent number: 7932659Abstract: A superconducting device includes a coil formed of a superconducting wire, an iron core to which the coil is attached, and a magnetic material arranged in a magnetic circuit and magnetized by magnetic flux. The magnetic circuit is generated by energization of the coil and passes through the iron core. A gap is formed between the coil and the iron core, or/and a nonmagnetic material is interposed between the coil and the iron core.Type: GrantFiled: April 17, 2006Date of Patent: April 26, 2011Assignee: Sumitomo Electric Industries, Ltd.Inventors: Toru Okazaki, Shingo Ohashi, Hidehiko Sugimoto
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Patent number: 7872393Abstract: Stators 12 and 13 are disposed with required air gaps in an axial direction of a rotor 11 so as to face each other, a plurality of field bodies 15 or permanent magnets 33 are disposed in the rotor 11, and a plurality of armature coils 17 and 19 are disposed in the stators 12 and 13 around the axis. At least one of the field bodies 15 or permanent magnets 33 and the armature coils 17 and 19 are formed from a superconductive material such that their magnetic flux directions are directed to the axial direction.Type: GrantFiled: December 16, 2005Date of Patent: January 18, 2011Assignees: Sumitomo Electric Industries, Ltd., Ishikawajima-Harima Heavy Industires Co., Ltd.Inventors: Toru Okazaki, Shingo Ohashi, Hidehiko Sugimoto, Toshio Takeda
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Publication number: 20100283564Abstract: This superconducting coil apparatus includes: a cylindrical coil container which has an inner circumferential surface and an outer circumferential surface; a superconducting coil which is stored in the coil container to be cooled so that a superconducting member is wound on the inner circumferential surface; and a columnar magnetic body which is fitted to the inner circumferential surface of the coil container.Type: ApplicationFiled: June 20, 2007Publication date: November 11, 2010Inventors: Toshio Takeda, Hidehiko Sugimoto, Toru Okazaki
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Patent number: 7791246Abstract: An axial motor includes an armature side stator (13), a pair of rotors, and a pair of stators, which are arranged with gaps left therebetween in the axial direction of a drive shaft (34). The armature side stator (13) includes armature coils (24). The pair of rotors are a first rotor (12) and a second rotor (14) that are arranged on both sides of the stator (13) and include inducers (20, 21, 27, 28). The pair of stators are a first field side stator (11) and a second field side stator (16) that are arranged respectively on oppositely spacing sides of the first rotor and the second rotor. The first and second rotors (12, 14) are mounted to the drive shaft (34). The first and second field side stators (11, 15) include respectively first and second field coils (18, 31) arranged in a toric form about the axis of the drive shaft (34).Type: GrantFiled: April 17, 2006Date of Patent: September 7, 2010Assignee: Sumitomo Electric Industries, Ltd.Inventors: Toru Okazaki, Shingo Ohashi, Hidehiko Sugimoto
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Patent number: 7750524Abstract: A magnetizing device for superconductor and a superconducting synchronous machine are provided capable of constituting more compact and simple equipment that uses a superconductor as a magnet. The magnetizing device for superconductor includes a superconductor (131); a coolant chamber (142) for cooling the superconductor (131) down to or below a critical temperature at which the transition to a superconducting state occurs; coils (111, 111?) for generating a magnetic field equal to or higher than a critical magnetic field in which the intrusion of a magnetic flux into the superconductor (131) starts, around the superconductor (131) cooled down to or below the critical temperature at which the transition to the superconducting state occurs; and position modification means capable of arranging the superconductor (131) on a disk (120) and modifying the relative positional relationship with the coils (111, 111?).Type: GrantFiled: July 15, 2003Date of Patent: July 6, 2010Assignees: University of Fukui, Tokyo University of Marine Science and Technology, Kitano Seiki Co., Ltd.Inventors: Hidehiko Sugimoto, Mitsuru Izumi, Masahiro Kitano
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Publication number: 20100148625Abstract: A superconducting device includes a coil formed of a superconducting wire, an iron core to which the coil is attached, and a magnetic material arranged in a magnetic circuit and magnetized by magnetic flux. The magnetic circuit is generated by energization of the coil and passes through the iron core. A gap is formed between the coil and the iron core, or/and a nonmagnetic material is interposed between the coil and the iron core.Type: ApplicationFiled: April 17, 2006Publication date: June 17, 2010Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Toru Okazaki, Shingo Ohashi, Hidehiko Sugimoto
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Publication number: 20100141060Abstract: An axial motor includes an armature side stator (13), a pair of rotors, and a pair of stators, which are arranged with gaps left therebetween in the axial direction of a drive shaft (34). The armature side stator (13) includes armature coils (24). The pair of rotors are a first rotor (12) and a second rotor (14) that are arranged on both sides of the stator (13) and include inducers (20, 21, 27, 28). The pair of stators are a first field side stator (11) and a second field side stator (16) that are arranged respectively on oppositely spacing sides of the first rotor and the second rotor. The first and second rotors (12, 14) are mounted to the drive shaft (34). The first and second field side stators (11, 15) include respectively first and second field coils (18, 31) arranged in a tone form about the axis of the drive shaft (34).Type: ApplicationFiled: April 17, 2006Publication date: June 10, 2010Inventors: Toru Okazaki, Shingo Ohashi, Hidehiko Sugimoto
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Publication number: 20100127594Abstract: An inductor-type synchronous machine having an axial gap structure, which has a shaft portion at the center thereof, the machine includes: a field-side stator which has a yoke made of a magnetic material and a field body protruding from the yoke in an axial direction of the shaft portion to form an N pole and an S pole in a radial direction; a rotor which has N pole inductors disposed so as to be opposed to the N pole formed by the field body and S pole inductors disposed so as to be opposed to the S pole formed by the field body; and an armature-side stator in which an armature coil is disposed so as to be opposed to the N pole inductors and the S pole inductors.Type: ApplicationFiled: June 20, 2007Publication date: May 27, 2010Inventors: Toshio Takeda, Tomoya Oota, Hiroyuki Togawa, Hidehiko Sugimoto, Toru Okazaki
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Patent number: 7667358Abstract: In a cooling structure of a superconducting motor in which a superconducting coil is attached to a rotor, grooves are concavely provided on an outer surface of a rotating shaft that penetrates and is fixed to the rotor. A refrigerant is circulated through a refrigerant circulation pipe disposed inside the grooves to that the superconducting coil is cooled by the refrigerant.Type: GrantFiled: December 16, 2005Date of Patent: February 23, 2010Assignee: Sumitomo Electric Industries, Ltd.Inventors: Toru Okazaki, Shingo Ohashi, Hidehiko Sugimoto, Toshio Takeda
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Patent number: 7598647Abstract: An inductor-type synchronous machine includes field stators having field elements by which an N-pole and an S-pole are concentrically formed, rotors to which a rotating shaft is fixed and has N-pole inductors disposed so as to face the N-pole of the field elements and S-pole inductors disposed so as to face the S-pole of the field elements, and an armature stator having armature coils disposed so as to face the N-pole inductors and the S-pole inductors.Type: GrantFiled: December 16, 2005Date of Patent: October 6, 2009Assignees: Sumitomo Electric Industries, Ltd., Ishikawajima-Harima Heavy Industries Co., Ltd.Inventors: Toru Okazaki, Shingo Ohashi, Hidehiko Sugimoto, Toshio Takeda
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Publication number: 20080136282Abstract: A series coupling synchronous axial gap type motor where rotors and stators are alternately stacked with required air gaps in the axial direction of a rotary shaft as a main shaft, is provided. The rotors are fixed to the rotary shaft, and the stators are disposed such that they cannot be interlocked with the rotary shaft. A plurality of rotary field bodies are attached to each of the rotor around the axis, and a plurality of armature coils are made to face the rotary field bodies with an air gap therefrom and are attached to each of the stators around the axis such that their magnetic-flux directions are directed toward the axial direction. The armature coils have an empty core, or a core member composed of a magnetic body attached thereto.Type: ApplicationFiled: December 16, 2005Publication date: June 12, 2008Inventors: Toru Okazaki, Shingo Ohashi, Hidehiko Sugimoto, Toshio Takeda
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Publication number: 20080100164Abstract: An inductor-type synchronous machine includes field stators having field elements by which an N-pole and an S-pole are concentrically formed, rotors to which a rotating shaft is fixed and has N-pole inductors disposed so as to face the N-pole of the field elements and S-pole inductors disposed so as to face the S-pole of the field elements, and an armature stator having armature coils disposed so as to face the N-pole inductors and the S-pole inductors.Type: ApplicationFiled: December 16, 2005Publication date: May 1, 2008Inventors: Toru Okazaki, Shingo Ohashi, Hidehiko Sugimoto, Toshio Takeda