Patents by Inventor Shinya Urata
Shinya Urata 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: 11955919Abstract: An electric motor system includes a battery, an inverter, an electric motor, a zero-phase switching arm and a control unit. The inverter converts DC power output from the battery into three-phase AC power and outputs the three-phase AC power to the electric motor. A rotor of the electric motor rotates by the three-phase AC power output from the inverter. A neural point of the electric motor is connected to the zero-phase switching arm. A zero-phase current flowing through respective windings of the electric motor is adjusted by switching of the zero-phase switching arm. By this means, in the electric motor system, torque is generated at the rotor also using the zero-phase current as well as a three-phase AC current flowing through the respective windings.Type: GrantFiled: June 21, 2021Date of Patent: April 9, 2024Assignee: DENSO CORPORATIONInventors: Makoto Taniguchi, Kazunari Moriya, Kenji Hiramoto, Hideo Nakai, Yuuko Ohtani, Shinya Urata, Masafumi Namba
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Publication number: 20230079383Abstract: A motor system of the present disclosure includes a permanent magnet motor including a stator having N-phase windings and a rotor having a permanent magnet, N being a natural number greater than or equal to three, an inverter that supplies N-phase drive currents for generating a rotating magnetic field to the stator, and a zero-phase current supply unit that supplies a zero-phase current to the N-phase windings of the stator. The motor system applies the zero-phase current to the N-phase windings in response to an inter-terminal voltage of the permanent magnet motor reaching a predetermined value of the inter-terminal voltage.Type: ApplicationFiled: November 21, 2022Publication date: March 16, 2023Applicant: DENSO CORPORATIONInventors: Makoto TANIGUCHI, Yuuko OHTANI, Shinya URATA, Hideo NAKAI, Kenji HIRAMOTO
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Publication number: 20210313912Abstract: An electric motor system includes a battery, an inverter, an electric motor, a zero-phase switching arm and a control unit. The inverter converts DC power output from the battery into three-phase AC power and outputs the three-phase AC power to the electric motor. A rotor of the electric motor rotates by the three-phase AC power output from the inverter. A neural point of the electric motor is connected to the zero-phase switching arm. A zero-phase current flowing through respective windings of the electric motor is adjusted by switching of the zero-phase switching arm. By this means, in the electric motor system, torque is generated at the rotor also using the zero-phase current as well as a three-phase AC current flowing through the respective windings.Type: ApplicationFiled: June 21, 2021Publication date: October 7, 2021Applicant: DENSO CORPORATIONInventors: Makoto TANIGUCHI, Kazunari MORIYA, Kenji HIRAMOTO, Hideo NAKAI, Yuuko OHTANI, Shinya URATA, Masafumi NAMBA
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Patent number: 10944301Abstract: Provided is a laminate having a reduced loss ratio while maintaining a high space factor. The present disclosure relates to a laminate for use in a core, comprising: a strip laminate composed of soft magnetic metal strips; and an insulating layer provided on a surface of the strip laminate, wherein each one layer of the soft magnetic metal strips has a thickness of 100 ?m or less, each one layer of the soft magnetic metal strips has an oxide film on their surfaces, the strip laminate is composed of at least two layers of the soft magnetic metal strip, and the strip laminate and the insulating layer are alternately disposed.Type: GrantFiled: May 31, 2019Date of Patent: March 9, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kensuke Komori, Shingo Fubuki, Shinya Urata, Yoshitaka Maeda
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Patent number: 10873226Abstract: A rotary electric machine includes an annular stator, an inner rotor, an outer rotor and a toroidal coil. The annular stator includes inner teeth protruding radially inward and outer teeth protruding radially outward. The inner rotor faces a radially inner side of the annular stator. The outer rotor faces a radially outer side of the annular stator. The toroidal coils are arranged in each inner slot between any adjacent two of the inner teeth and a corresponding one outer slot between adjacent two of the outer teeth. The total number of the plurality of outer slots is larger than the total number of the plurality of inner slots. The number of the coils arranged in all the outer slots is larger than or equal to the number of the coils arranged in all the inner slots.Type: GrantFiled: January 25, 2018Date of Patent: December 22, 2020Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masafumi Namba, Shinya Urata, Hideo Nakai, Hiroyuki Hattori, Shinji Wakamatsu
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Publication number: 20200153321Abstract: A motor core that ensures reduction of eddy-current loss and improvement of a space factor at the same time is provided. The motor core according to the present disclosure includes a laminated body where a plurality of metal plates are laminated; a fixing member that fixes the plurality of metal plates to each other at a fixing position in a peripheral edge side of the laminated body; and an insulation film disposed between the metal plates in a peripheral edge portion of the laminated body including the fixing position. In a center portion of the laminated body, no insulation film is disposed between the metal plates, or an insulation film thinner than the insulation film in the peripheral edge portion is disposed between the metal plates.Type: ApplicationFiled: October 15, 2019Publication date: May 14, 2020Inventors: Hideki MANABE, Shinya URATA, Yoshitaka MAEDA
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Publication number: 20190379246Abstract: Provided is a laminate having a reduced loss ratio while maintaining a high space factor. The present disclosure relates to a laminate for use in a core, comprising: a strip laminate composed of soft magnetic metal strips; and an insulating layer provided on a surface of the strip laminate, wherein each one layer of the soft magnetic metal strips has a thickness of 100 ?m or less, each one layer of the soft magnetic metal strips has an oxide film on their surfaces, the strip laminate is composed of at least two layers of the soft magnetic metal strip, and the strip laminate and the insulating layer are alternately disposed.Type: ApplicationFiled: May 31, 2019Publication date: December 12, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kensuke KOMORI, Shingo FUBUKI, Shinya URATA, Yoshitaka MAEDA
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Patent number: 10404146Abstract: A rotary electric machine includes: a stator including a stator core and a stator coil wound around the stator core; and an annular outer rotor including an outer core disposed around an outer periphery of the stator and a plurality of outer magnets arranged at intervals in a circumferential direction, in which the stator core has an annular yoke and a plurality of outer teeth protruding radially outward from an outer periphery of the yoke, the outer magnets are magnetized in the circumferential direction such that magnetization directions of the outer magnets adjacent to each other in the circumferential direction are opposite to each other in the circumferential direction, and a circumferential distance of a gap between the outer magnets adjacent to each other is 1.5 times or more a disposition pitch in the circumferential direction of the outer teeth.Type: GrantFiled: November 6, 2017Date of Patent: September 3, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroyuki Hattori, Shinji Wakamatsu, Shinya Urata
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Publication number: 20180219439Abstract: A rotary electric machine includes an annular stator, an inner rotor, an outer rotor and a toroidal coil. The annular stator includes inner teeth protruding radially inward and outer teeth protruding radially outward. The inner rotor faces a radially inner side of the annular stator. The outer rotor faces a radially outer side of the annular stator. The toroidal coils are arranged in each inner slot between any adjacent two of the inner teeth and a corresponding one outer slot between adjacent two of the outer teeth. The total number of the plurality of outer slots is larger than the total number of the plurality of inner slots. The number of the coils arranged in all the outer slots is larger than or equal to the number of the coils arranged in all the inner slots.Type: ApplicationFiled: January 25, 2018Publication date: August 2, 2018Applicant: Toyota Jidosha Kabushiki KaishaInventors: Masafumi Namba, Shinya Urata, Hideo Nakai, Hiroyuki Hattori, Shinji Wakamatsu
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Publication number: 20180159408Abstract: A rotary electric machine includes: a stator including a stator core and a stator coil wound around the stator core; and an annular outer rotor including an outer core disposed around an outer periphery of the stator and a plurality of outer magnets arranged at intervals in a circumferential direction, in which the stator core has an annular yoke and a plurality of outer teeth protruding radially outward from an outer periphery of the yoke, the outer magnets are magnetized in the circumferential direction such that magnetization directions of the outer magnets adjacent to each other in the circumferential direction are opposite to each other in the circumferential direction, and a circumferential distance of a gap between the outer magnets adjacent to each other is 1.5 times or more a disposition pitch in the circumferential direction of the outer teeth.Type: ApplicationFiled: November 6, 2017Publication date: June 7, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroyuki HATTORI, Shinji WAKAMATSU, Shinya URATA
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Publication number: 20160042833Abstract: A method for manufacturing an element wire assembly includes: a first step of bunching up and rolling or drawing a plurality of circular cross-section conducting wires (1) to shape each of the conducting wires into a polygon in cross section and form the conducting wires (1?) and form a conducting wire assembly (10); and a second step of heat-treating the conducting wire assembly (10) to form an oxide film (2) on the periphery of each of the conducting wires (1?) to form element wires (3) and, form an element wire assembly (20).Type: ApplicationFiled: April 8, 2014Publication date: February 11, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshitomo KAWANISHI, Daichi MARUYAMA, Shuxin DONG, Hisaaki TAKAO, Shinya URATA, Atsuto OKAMOTO, Hideo NAKAI
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Patent number: 7034648Abstract: An amorphous metal core transformer is provided with a plurality of wound magnetic cores composed of amorphous metal strips, and a plurality of coils, each of the coils including a primary coil and a secondary coil, each of the coils further including a bobbin. The primary coil employs different material from that of the secondary coil, e.g., a copper conductor is employed in a primary coil, while an aluminum conductor is employed in a secondary coil. The bobbin has higher strength than that of the amorphous metal strips.Type: GrantFiled: April 4, 2001Date of Patent: April 25, 2006Assignee: Hitachi, Ltd.Inventors: Toshiki Shirahata, Masayuki Horiuchi, Katsutoshi Inagaki, Shinya Urata
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Patent number: 6750749Abstract: An amorphous metal core transformer is provided with a plurality of wound magnetic cores composed of amorphous metal strips, and a plurality of coils, each of the coils including a primary coil and a secondary coil, each of the coils further including a bobbin. The primary coil employs different material from that of the secondary coil, e.g., a copper conductor is employed in a primary coil, while an aluminum conductor is employed in a secondary coil. The bobbin has higher strength than that of the amorphous metal strips.Type: GrantFiled: July 30, 1999Date of Patent: June 15, 2004Assignee: Hitachi, Ltd.Inventors: Toshiki Shirahata, Masayuki Horiuchi, Katsutoshi Inagaki, Shinya Urata
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Publication number: 20020057180Abstract: An amorphous metal core transformer is provided with a plurality of wound magnetic cores composed of amorphous metal strips, and a plurality of coils, each of the coils including a primary coil and a secondary coil, each of the coils further including a bobbin. The primary coil employs different material from that of the secondary coil, e.g., a copper conductor is employed in a primary coil, while an aluminum conductor is employed in a secondary coil. The bobbin has higher strength than that of the amorphous metal strips.Type: ApplicationFiled: July 30, 1999Publication date: May 16, 2002Inventors: TOSHIKI SHIRAHATA, MASAYUKI HORIUCHI, KATSUTOSHI INAGAKI, SHINYA URATA
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Publication number: 20010033216Abstract: An amorphous metal core transformer is provided with a plurality of wound magnetic cores composed of amorphous metal strips, and a plurality of coils, each of the coils including a primary coil and a secondary coil, each of the coils further including a bobbin. The primary coil employs different material from that of the secondary coil, e.g., a copper conductor is employed in a primary coil, while an aluminum conductor is employed in a secondary coil. The bobbin has higher strength than that of the amorphous metal strips.Type: ApplicationFiled: April 4, 2001Publication date: October 25, 2001Applicant: Hitachi, Ltd.Inventors: Toshiki Shirahata, Masayuki Horiuchi, Katsutoshi Inagaki, Shinya Urata