Patents Assigned to Toshiba Industrial Products and Systems Corporation
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Publication number: 20230327509Abstract: An insulator includes a teeth cover portion and a crossover-wire guide portion. The crossover-wire guide portion guides a crossover-wire portion of a coil and an introduction crossover-wire portion of an introduction coil into a terminal connection portion. The crossover-wire guide portion has a guide groove that guides the crossover-wire portion and the introduction crossover-wire portion substantially in a core circumferential direction that is a circumferential direction of the stator core. In a state in which the plurality of the split cores are assembled in a ring shape, the guide groove is formed in a shape that does not coincide with a circular arc of a circle having a center corresponding to a ring center of the assembled split cores.Type: ApplicationFiled: April 28, 2021Publication date: October 12, 2023Applicant: Toshiba Industrial Products and Systems CorporationInventors: Takashi ARAKI, Motoyasu MOCHIZUKI, Masaaki MATSUMOTO
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Publication number: 20230291271Abstract: A rotating electric machine cooling frame according to an embodiment includes: a cylindrical frame main body; one cooling-medium inlet provided on the frame main body; one cooling-medium outlet provided on the frame main body; and a plurality of flow-passage lines provided in the frame main body, including a cooling-medium flow passage in communication with the cooling-medium inlet and the cooling-medium outlet.Type: ApplicationFiled: June 14, 2021Publication date: September 14, 2023Applicants: Toshiba Industrial Products and Systems Corporation, KAWAMATA SEIKI CO., LTD.Inventors: Takashi ARAKI, Toshiaki HIRATE, Motoyasu MOCHIZUKI, Masaaki MATSUMOTO, Ryou TAMURA, Hiroyasu FUKUHARA
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Publication number: 20230238864Abstract: A coil-connecting method according to an embodiment includes: preparing a metal sleeve having a circular shape when viewed from an axial direction; processing the metal sleeve such that the metal sleeve has a non-circular shape when viewed from the axial direction, thereby obtaining a deformed sleeve; inserting a plurality of coils into the deformed sleeve, aligning the plurality of the coils by the deformed sleeve; and swaging the deformed sleeve after the plurality of the coils are inserted into the deformed sleeve, thereby connecting the deformed sleeve and the plurality of the coils together.Type: ApplicationFiled: May 26, 2021Publication date: July 27, 2023Applicant: Toshiba Industrial Products and Systems CorporationInventors: Takashi ARAKI, Motoyasu MOCHIZUKI, Masaaki MATSUMOTO
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Publication number: 20230238848Abstract: An insulator according to an embodiment is attached to teeth extending from one side surface in a radial direction of a ring-shaped stator core in the radial direction. The insulator ensures insulation between the teeth and a rectangular wire wound around the teeth with a number of windings. The insulator includes an end-surface cover portion, two side-surface cover portions, a first wall portion, a second wall portion, a protruding-stripe portion, and a recess. The end-surface cover portion covers an end surface of the teeth in an axial direction. The two side-surface cover portions cover both side surfaces of the teeth in a circumferential direction. At one side-surface cover portion of the two side-surface cover portions, a first winding of the rectangular wire is disposed, the rectangular wire is wound around the teeth with a number of windings, and the protruding-stripe portion and the recess are formed.Type: ApplicationFiled: April 28, 2021Publication date: July 27, 2023Applicant: Toshiba Industrial Products and Systems CorporationInventors: Takashi ARAKI, Motoyasu MOCHIZUKI, Masaaki MATSUMOTO
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Publication number: 20230170754Abstract: An insulator according to an embodiment includes a teeth cover portion and a crossover-wire guide portion. The crossover-wire guide portion includes a plurality of guide walls, a drawing groove, a drawing path, and a crossover-wire support portion. The plurality of the guide walls separate the crossover-wire portions of the coils and are capable of guiding the crossover-wire portions in the core circumferential direction. The drawing groove penetrates through all of the plurality of the guide walls in the core radial direction. The drawing path is disposed at a position away from the drawing groove in the core circumferential direction. The crossover-wire support portion changes a direction of the crossover-wire portion of the coil drawn out from the drawing groove, to be directed to the drawing path, and supports the crossover-wire portion.Type: ApplicationFiled: April 28, 2021Publication date: June 1, 2023Applicant: Toshiba Industrial Products and Systems CorporationInventors: Takashi ARAKI, Motoyasu MOCHIZUKI, Masaaki MATSUMOTO
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Publication number: 20220355337Abstract: An adhesive coating device for coating an inner wall surface of a workpiece provided with holes with an adhesive. A control device automatically executes an operation of applying the adhesive, the operation including positioning of the workpiece, relative positioning of a nozzle that applies the adhesive in a non-contact manner with respect to the workpiece, and moving of the nozzle, in which the adhesive is ejected and applied in an oblique direction from the nozzle to the inner wall surface of the hole, and the angle of the oblique direction is such an angle that the adhesive linearly ejected from the nozzle located outside the hole can be applied to the inner wall surface of the hole with a desired depth without interfering with an opening part of the hole.Type: ApplicationFiled: March 6, 2020Publication date: November 10, 2022Applicants: TOSHIBA INDUSTRIAL PRODUCTS AND SYSTEMS CORPORATION, TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATIONInventors: Yuji ISHIKAWA, Hiroyuki SANO, Yoshihiro IGARASHI
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Patent number: 11329538Abstract: According to one embodiment, in a lateral cross section, a rotor core includes a plurality of layers of barrier regions formed to be arranged in a radial direction with intervals in each magnetic pole. Each barrier region includes a flux barrier extending from near a part of an outer circumferential surface through d axis to near another part thereof. At least a flux barrier of a barrier region provided at an outermost circumferential surface side is filled with a nonmagnetic conductive material. A barrier-side edge on a side of the central axis, which defines the flux barrier of the barrier region provided in an outermost circumferential surface side is located within a range of 0.55<2a/R2 <0.84.Type: GrantFiled: April 22, 2020Date of Patent: May 10, 2022Assignees: TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION, Toshiba Industrial Products and Systems CorporationInventors: Katsutoku Takeuchi, Makoto Matsushita, Yuji Yamamoto, Masaaki Matsumoto
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Patent number: 11223313Abstract: A device according to an embodiment includes an inverter main circuit; a detector configured to detect a current of an output line of the inverter main circuit; a starting time controller comprising a rotational phase angle estimator configured to calculate, based on a current response value detected by the detector, a value corresponding to a rotational phase angle of a motor connected to the inverter main circuit in a stationary reference frame, and a rotational speed estimator configured to calculate a value corresponding to a rotational speed of the motor by using the value corresponding to the rotational phase angle when the inverter main circuit is started; and a regular time controller configured to calculate, with the value corresponding to the rotational speed as an initial value, an estimated rotational phase angle of the motor in a rotating reference frame.Type: GrantFiled: March 27, 2019Date of Patent: January 11, 2022Assignees: Toshiba Infrastructure Systems & Solutions Corporation, Toshiba Industrial Products and Systems CorporationInventors: Shun Taniguchi, Kazuya Yasui, Tomoaki Shigeta
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Patent number: 11050373Abstract: A rotary electric system includes a rotary electric device that includes: a stator including a stator winding; and a rotor. The stator winding includes: a first coil group that generates a rotating magnetic field to rotate the rotor; and a second coil group that generates power with induced electromotive force due to rotation of the rotor.Type: GrantFiled: March 1, 2018Date of Patent: June 29, 2021Assignee: Toshiba Industrial Products and Systems CorporationInventor: Kazuto Sakai
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Publication number: 20200343798Abstract: According to one embodiment, in a lateral cross section, a rotor core includes a plurality of layers of barrier regions formed to be arranged in a radial direction with intervals in each magnetic pole. Each barrier region includes a flux barrier extending from near a part of an outer circumferential surface through d axis to near another part thereof. At least a flux barrier of a barrier region provided at an outermost circumferential surface side is filled with a nonmagnetic conductive material. A barrier-side edge on a side of the central axis, which defines the flux barrier of the barrier region provided in an outermost circumferential surface side is located within a range of 0.55<2a/R2 <0.84.Type: ApplicationFiled: April 22, 2020Publication date: October 29, 2020Applicants: TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION, Toshiba Industrial Products and Systems CorporationInventors: Katsutoku Takeuchi, Makoto Matsushita, Yuji Yamamoto, Masaaki Matsumoto
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Patent number: 10778052Abstract: A synchronous reluctance type rotary electric machine of an embodiment includes a shaft and a rotor core. The shaft rotates around a rotation axis. The rotor core is fixed to the shaft and includes multi-layered hollow parts having a convex shape toward a radially inward side formed for each pole in cross section. Then, when a center in a circumferential direction of one pole is a pole center, a hollow part closest to the shaft among the plurality of hollow parts is a first hollow part, a hollow part positioned next to the first hollow part is a second hollow part, and a hollow part positioned on a side opposite to the first hollow part with respect to the second hollow part is a third hollow part, a width W1 between the first hollow part and the second hollow part on the pole center and a width W2 between the second hollow part and the third hollow part on the pole center are set to satisfy W1?W2.Type: GrantFiled: April 8, 2019Date of Patent: September 15, 2020Assignees: Toshiba Industrial Products and Systems Corporation, Toshiba Infrastructure Systems & Solutions CorporationInventors: Masaaki Matsumoto, Takashi Araki, Makoto Matsushita, Katsutoku Takeuchi, Toshio Hasebe
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Patent number: 10742151Abstract: A device according to an embodiment includes an circuit; a detector for detecting a current response output from the circuit; a vector converter for converting the current response into a d-axis current and a q-axis current by using a rotational phase angle of a motor connected to the circuit; a calculator for calculating, based on a torque command and a current phase angle command, a current amplitude command of the current response output from the circuit; a dq-axes converter for calculating a d-axis current command and a q-axis current command from the current amplitude command and the current phase angle command; and a controller for calculating a voltage command so that the d-axis current command and the q-axis current command are equal to the d-axis current and the q-axis current.Type: GrantFiled: March 5, 2019Date of Patent: August 11, 2020Assignees: Toshiba Infrastructure Systems & Solutions Corporation, Toshiba Industrial Products and Systems CorporationInventors: Shun Taniguchi, Kazuya Yasui, Tomoaki Shigeta
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Patent number: 10720818Abstract: A synchronous reluctance type rotary electric machine of an embodiment includes a shaft, a rotor core, rotor core pressers, a plurality of conductor bars, and short-circuit rings. The shaft rotates around a rotation axis. The rotor core is fixed to the shaft and includes multi-layered hollow parts having a convex shape toward a radially inward side formed for each pole in cross section. The rotor core pressers hold the rotor core by pressing the rotor core from both sides in a rotation axis direction. The plurality of conductor bars are disposed in the hollow parts to extend along the rotation axis and have both ends protruding through the rotor core pressers. The short-circuit rings are provided at both ends of each of the plurality of conductor bars and connect the plurality of conductor bars together. Thus, the conductor bars are fixed to the rotor core pressers.Type: GrantFiled: April 11, 2019Date of Patent: July 21, 2020Assignees: Toshiba Industrial Products and Systems Corporation, Toshiba Infrastructure Systems & Solutions CorporationInventors: Masaaki Matsumoto, Takashi Araki, Makoto Matsushita, Katsutoku Takeuchi, Toshio Hasebe
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Patent number: 10637310Abstract: A synchronous reluctance type rotary electric machine of an embodiment has a rotor core. The rotor core includes a plurality of poles, multi-layered hollow parts having a convex shape toward a side radially inward formed for each pole in cross section, and a bridge formed between each of the hollow parts and an outer circumferential surface thereof. When a boundary between two adjacent poles is a pole boundary, a groove is formed on at least one of both sides sandwiching the pole boundary at positions other than on the pole boundary on the outer circumferential surface of the rotor core.Type: GrantFiled: April 3, 2019Date of Patent: April 28, 2020Assignees: Toshiba Industrial Products and Systems Corporation, Toshiba Infrastructure Systems & Solutions CorporationInventors: Masaaki Matsumoto, Takashi Araki, Yuji Yamamoto, Katsutoku Takeuchi, Makoto Matsushita, Toshio Hasebe
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Patent number: 10622853Abstract: A synchronous reluctance type rotary electric machine of an embodiment includes, a rotor core, a plurality of conductor bars, short-circuit rings, a stator core, and multiphase armature windings. The rotor core includes multi-layered hollow parts having a convex shape toward a side radially inward formed for each pole in cross section, and a bridge formed between each of the hollow parts and an outer circumferential surface thereof. The plurality of conductor bars are disposed in the respective hollow parts. The short-circuit rings connect the plurality of conductor bars together. Then, in all of the hollow parts of a second layer and subsequent layers other than the hollow part of a first layer which is at a position farthest from the rotation axis of the rotor core, the conductor bars are disposed at both end portions thereof close to the bridge at a predetermined distance from the bridge.Type: GrantFiled: April 3, 2019Date of Patent: April 14, 2020Assignees: Toshiba Industrial Products and Systems Corporation, Toshiba Infrastructure Systems & Solutions CorporationInventors: Kazuhiro Toda, Takashi Araki, Masaaki Matsumoto, Katsutoku Takeuchi, Makoto Matsushita, Toshio Hasebe
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Patent number: 10554081Abstract: A synchronous reluctance rotary electric machine of an embodiment includes a shaft and a rotor core. The shaft rotates around a rotation axis. The rotor core is fixed to the shaft, includes four layers of hollow parts having a convex shape toward a radially inner side formed for each pole in cross section, and includes bridges between the respective hollow parts and an outer circumferential surface thereof. Then, in each pole, when a center in a circumferential direction is a pole center, both ends in the circumferential direction are pole ends, and the plurality of bridges are a first layer bridge, a second layer bridge, a third layer bridge, and a fourth layer bridge in order from the pole center toward each of the pole ends, a circumferential width between the second layer bridge and the third layer bridge is set to be greater than a circumferential width between the first layer bridge and the second layer bridge and a circumferential width between the third layer bridge and the fourth layer bridge.Type: GrantFiled: April 18, 2019Date of Patent: February 4, 2020Assignees: Toshiba Industrial Products and Systems Corporation, Toshiba Infrastructure Systems & Solutions CorporationInventors: Katsutoku Takeuchi, Makoto Matsushita, Toshio Hasebe, Masaaki Matsumoto
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Patent number: 10536059Abstract: The apparatus for manufacturing an iron core for a dynamo-electric machine according to an embodiment of the present invention is provided with a rotary layering part for layering while rotating an iron core material punched from an electromagnetic steel sheet, a drive source for generating a drive force for rotating the rotary layering part, and a drive force transmission part for transmitting the drive force generated by the drive source to the rotary layering part. The drive force transmission part is configured from a plurality of gears arranged between the drive source and the rotary layering part. The rotary layering part is provided with a rotation position establishing means for establishing the rotation position of the rotary layering part.Type: GrantFiled: June 16, 2016Date of Patent: January 14, 2020Assignee: TOSHIBA INDUSTRIAL PRODUCTS & SYSTEMS CORPORATIONInventors: Takayuki Akatsuka, Toyonobu Yamada, Naoya Fujita, Masanori Ihori
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Publication number: 20190379312Abstract: A rotary electric system includes a rotary electric device that includes: a stator including a stator winding; and a rotor. The stator winding includes: a first coil group that generates a rotating magnetic field to rotate the rotor; and a second coil group that generates power with induced electromotive force due to rotation of the rotor.Type: ApplicationFiled: March 1, 2018Publication date: December 12, 2019Applicant: Toshiba Industrial Products and Systems CorporationInventor: Kazuto SAKAI
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Patent number: 10505406Abstract: According to one embodiment, an electrical machine includes a rotor and an armature. The armature includes first to third stator cores, and an armature coil. The first and second stator cores are arranged along a direction of a rotation axis of the rotor. The third stator core is arranged opposite to the first and second stator cores. The armature coil is provided between the first and second stator cores. The first and second stator cores have a same shape and each include magnetic poles and a first positioning part. The third stator core includes a second positioning part. A relative phase angle of the first stator core and a relative phase angle of the second stator core in the rotation direction are set by using the first positioning part and the second positioning part.Type: GrantFiled: March 7, 2016Date of Patent: December 10, 2019Assignees: Kabushiki Kaisha Toshiba, Toshiba Industrial Products and Systems CorporationInventors: Hiroshi Takahashi, Yasuhito Ueda, Takahiro Kokubo, Toyonobu Yamada, Yoshiro Shinoda, Hisaaki Shimozu, Yuji Yamamoto
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Patent number: 10444273Abstract: A partial discharge measurement device includes: an impulse voltage application unit; a measurement control unit; and first and second partial discharge detection unit. The measurement control unit includes: a first and a second detector level partial discharge counting unit; and a partial discharge resistance evaluation unit. Each of the first and the second detector level partial discharge counting units outputs a first or second detection signal when the first or second detection signal exceeds a predetermined specified value. The partial discharge resistance evaluation unit counts the number of occurrences of partial discharge based on an output from the first and second detector level partial discharge counting unit, and regards the impulse voltage value at which the count value has reached a predetermined value as a partial discharge inception voltage under the repeated impulse voltage application.Type: GrantFiled: April 21, 2015Date of Patent: October 15, 2019Assignees: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION, KABUSHIKI KAISHA TOSHIBA, TOSHIBA INDUSTRIAL PRODUCTS AND SYSTEMS CORPORATIONInventors: Tomomi Ikegami, Tetsuo Yoshimitsu, Takayuki Sakurai, Tatsuya Hirose, Satoshi Hiroshima, Yuji Yamamoto