Patents by Inventor Yoshihiro Miyama
Yoshihiro Miyama 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: 10668917Abstract: In a drive system including a battery, a power generation device (PGD) including a generator mounted to an engine shaft, and a drive device (DD) including a motor for driving a driven component, a drive controller performs a drive control for PGD and DD and a switching control for a switching device. During a parallel connection, respective high-voltage side terminals (HVTs) of PGD and the battery are connected to a HVT of DD, and respective low-voltage side terminals (LVTs) of PGD and the battery are connected to LVT of DD. During a series connection, HVT of any one of PGD and the battery is connected to HVT of DD, and LVT of another one of PGD and the battery is connected to LVT of DD, and terminals of PGD and the battery, which are not connected to DD, are connected to each other.Type: GrantFiled: August 19, 2016Date of Patent: June 2, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yoshihiro Miyama, Masaki Yamada, Takeshi Mori, Shigeki Harada, Moriyuki Hazeyama
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Publication number: 20200041218Abstract: A plate heat exchanger causes heat exchange to be performed using a plurality of heat transfer plates stacked. Each of the heat transfer plates includes a plate body, a first-medium inlet, a first-medium outlet, a second-medium inlet, a second-medium outlet, and a projection that provides a passage. At least one of the first-medium inlet and the first-medium outlet is located at one of two corners at one end of the plate body which the projection contacts. At least one of the second-medium inlet and the second-medium outlet is located at one of two corners at the other end of the plate body from which the projection is separated.Type: ApplicationFiled: December 13, 2017Publication date: February 6, 2020Applicant: Mitsubishi Electric CorporationInventors: Junichi NAKAZONO, Shigetoshi IPPOSHI, Masaru SHINOZAKI, Yugo ASAI, Yusuke KIMOTO, Yoshihiro MIYAMA, Yuichi USUDA, Yoshitaka EIJIMA, Seiji MARUYAMA
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Patent number: 10469003Abstract: One end of each of phase conductors wound around a stator core in a wave winding arrangement is connected to a positive electrode terminal of a DC power supply through a first positive electrode side switch and is connected to a negative electrode terminal of the DC power supply through a second negative electrode side switch. The other end of the phase conductor is connected to the negative electrode terminal of the DC power supply through a first negative electrode side switch and is connected to the positive electrode terminal of the DC power supply through a second positive electrode side switch. The first positive electrode side switch, the second negative electrode side switch, the first negative electrode side switch, and the second positive electrode side switch are controlled by a controller, whereby amplitude and phase of current passing through each of the phase conductors are individually controlled.Type: GrantFiled: July 27, 2015Date of Patent: November 5, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yoshihiro Miyama, Hideaki Arita, Akihiro Daikoku, Kan Akatsu, Hiroki Hijikata
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Patent number: 10468947Abstract: A motor according to the present invention includes: a stator core that surrounds an outer circumference of a rotor, and that includes: a yoke portion; and a plurality of tooth portions in which tip portions protrude radially inward toward a central axis of the rotor from an inner circumferential surface of the yoke portion; a heat sink that is disposed so as to face a first end surface of the stator core in an axial direction of the stator core; a stator coil that includes phase coil portions that are configured using conducting wires that are mounted to the stator core; and a coil fixing member that is disposed on coil end portions of the phase coil portions, that fixes the coil end portions in a state of surface contact with the heatsink.Type: GrantFiled: April 5, 2016Date of Patent: November 5, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yoshihiro Miyama, Hideaki Arita, Akihiro Daikoku
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Patent number: 10447096Abstract: Given a first intersection point of the surface of a rotor and a straight line that joins a central point of a permanent magnet on a stator side and a tooth tip section closest to the central point of the permanent magnet on the stator side, a flange is formed outward of an arc having, as the radius thereof, a distance from a second intersection point of the inner peripheral face of the stator and a straight line that joins the rotation axis of the rotor and the first intersection point, up to the tooth tip section.Type: GrantFiled: November 18, 2015Date of Patent: October 15, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIOnInventors: Junji Kitao, Moriyuki Hazeyama, Yoshihiro Miyama, Takeshi Mori, Akihiro Daikoku
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Patent number: 10447099Abstract: A rotary electric machine, in which ?>? is established when the teeth portion has a width ? in a circumferential direction thereof, a rotation center of the rotor and one of corners, which is on a rotor surface side, on both ends of each of the permanent magnets are connected by a straight line, a center between an N-pole and an S-pole of the permanent magnets is on a q-axis, and an angle formed by two straight lines on the q-axis side is ?, a first bridge part is provided between a flux barrier provided at the rotor core and the rotor surface, and ?>? is established when the first bridge part has a minimum width ?, and the flux barrier has a minimum width ? on the q-axis.Type: GrantFiled: September 14, 2016Date of Patent: October 15, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Moriyuki Hazeyama, Yoshihiro Miyama, Taiga Komatsu, Junji Kitao
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Publication number: 20190308606Abstract: A drive system including: a battery; a power generation device (PGD) including a power generator (PG) mounted to an engine shaft and an inverter converting AC-voltage of the PG into DC-voltage; a drive device (DD) including a motor driving a driven component and an inverter performing bi-directional conversion between AC-voltage of the motor and DC-voltage; a switching device (SD) including a plurality of switches switching a connection of the battery and the PGD at both ends of the DD between a series connection (S-connection) and a parallel connection (P-connection) for connection; a reactor arranged between the battery and SD or between the PGD and the DD; and a controller controlling each of the SD, PGD, and DD, wherein the controller uses, when a speed of the driven component is being changed, the SD to fix the connection of the battery and PGD to S-connection or P-connection after alternately switching the connection between the S-connection and the P-connection.Type: ApplicationFiled: August 30, 2017Publication date: October 10, 2019Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yohei TAN, Yoshihiro MIYAMA, Shigeki HARADA, Masahiro IEZAWA
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Publication number: 20190250011Abstract: A rotation angle detection device including: a rotor; a stator including “b” (b?3) magnetic detection portions (MDPs) each including a bias magnetic field generation portion and a magnetic detection element (MDE); and a rotation angle processor calculating a rotation angle of the rotor based on a detection by the (MDEs). The rotor has convex and concave portions (CCPs), which change in “x” cycles for a mechanical angle 360 (“x”?1) to make the MDEs possible to obtain a sine wave. There are arranged “b” MDPs along a circumferential direction of the stator for each cycle of the CCPs, which are arranged at intervals of a mechanical angle 360×(n×b+m)/(x×b), where “n” (n?0) represents, by a number of cycles, a deviation amount of each of the MDPs from a reference position in the circumferential direction, and “m” (1?m?“b”) represents a position of a MDP in an arrangement order.Type: ApplicationFiled: October 31, 2016Publication date: August 15, 2019Applicant: Mitsubishi Electric CorporationInventors: Hitoshi ISODA, Yoshihiro MIYAMA, Tatsuo NISHIMURA, Hideaki ARITA, Shinji NISHIMURA, Koji NISHIZAWA
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Patent number: 10361603Abstract: In a mechanically and electrically integrated driving apparatus, a common coolant flow channel for cooling a motor unit and an inverter unit is disposed inside a wall portion of a frame unit. Power modules are placed in close contact with an inner wall surface of the frame unit. A bracket that is separate from the frame unit is fitted into the frame unit. A space inside the frame unit is divided by the bracket into: a space in which the motor unit is housed; and a space in which the inverter unit is housed.Type: GrantFiled: October 20, 2014Date of Patent: July 23, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Junichi Aizawa, Yoshihiro Miyama, Akihiro Daikoku, Norihiro Watanabe, Hideaki Arita, Shota Hanioka, Shigetoshi Ipposhi
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Patent number: 10211698Abstract: In an inverter integrated motor apparatus, a cylindrical base frame has an inverter unit accommodating section. The inverter unit has a plurality of control substrates and a plurality of power modules which are provided on the control substrates. In the inverter unit accommodating section, a plurality of openings are provided at intervals in the circumferential direction. A rib section is formed between mutually adjacent openings. The openings are covered by the plurality of heat sinks. The power modules and control substrates are disposed on the inside of the heat sinks.Type: GrantFiled: March 19, 2015Date of Patent: February 19, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Shota Hanioka, Yoshihiro Miyama, Norihiro Watanabe, Akihiro Daikoku
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Publication number: 20190036387Abstract: In a rotary electric machine, slots are formed between teeth of a stator core. A ratio of a number of poles to a number of slots is 2:3. When an electrical angle of a tooth tip width, which is a width dimension of a tip of each of the teeth in a circumferential direction of the stator, is represented by ?, an electrical angle of a pole arc angle, which is an angle formed by two straight lines that connect a rotation center of a rotor to corners on a rotor surface side of one permanent magnet, is represented by ?, and a number of pole pairs is represented by P, the tooth tip width is within a range of (electrical angle)±0.2°×P for a value that satisfies the following expression: ?=?2.5?+319.7 (0<??180) [deg].Type: ApplicationFiled: November 29, 2016Publication date: January 31, 2019Applicant: Mitsubishi Electric CorporationInventors: Moriyuki HAZEYAMA, Junji KITAO, Yoshihiro MIYAMA, Shogo OKAMOTO, Shinji NISHIMURA, Ryuichi KITORA, Ryuji KITAMURA, Hitoshi ISODA
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Publication number: 20180337572Abstract: A rotary electric machine includes a stator core, a stator coil, and a cooling portion. The stator core includes yoke portions and a plurality of tooth portions, and surrounds an outer periphery of a rotor. Each of the tooth portions has a distal end portion protruding radially inward from an inner peripheral surface of each of the yoke portions toward a center axis of the rotor. The stator coil includes a plurality of phase coil portions formed by winding a conductive wire around the stator core. The cooling portion is provided so as to be isolated from the stator core, and is configured to cool the stator coil in contact with the stator coil.Type: ApplicationFiled: January 19, 2017Publication date: November 22, 2018Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yoshihiro MIYAMA, Hideaki ARITA
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Patent number: 10063123Abstract: In the electric power converting apparatus, a frame unit is configured by mounting an inner frame into an outer frame, brackets are disposed on two axial ends of the frame unit, an annular liquid cooling jacket is configured between the inner frame and the outer frame, the inner frame is configured into a tubular shape by bending a plurality of base members that are linked consecutively at thin linking portions between the base members, and butting together the base members that are positioned at two ends in a direction of linking, the power modules are mounted to respective side wall surfaces of the inner frame that face radially inward, and sealing members that seal the liquid cooling jacket are respectively disposed in the butted portion of the base members, and between the frame unit and the bracket.Type: GrantFiled: April 22, 2015Date of Patent: August 28, 2018Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Junji Kitao, Yoshihiro Miyama, Akihiro Daikoku, Norihiro Watanabe
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Publication number: 20180236999Abstract: In a drive system including a battery, a power generation device (PGD) including a generator mounted to an engine shaft, and a drive device (DD) including a motor for driving a driven component, a drive controller performs a drive control for PGD and DD and a switching control for a switching device. During a parallel connection, respective high-voltage side terminals (HVTs) of PGD and the battery are connected to a HVT of DD, and respective low-voltage side terminals (LVTs) of PGD and the battery are connected to LVT of DD. During a series connection, HVT of any one of PGD and the battery is connected to HVT of DD, and LVT of another one of PGD and the battery is connected to LVT of DD, and terminals of PGD and the battery, which are not connected to DD, are connected to each other.Type: ApplicationFiled: August 19, 2016Publication date: August 23, 2018Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yoshihiro MIYAMA, Masaki YAMADA, Takeshi MORI, Shigeki HARADA, Moriyuki HAZEYAMA
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Publication number: 20180233973Abstract: A rotary electric machine, in which ?>? is established when the teeth portion has a width ? in a circumferential direction thereof, a rotation center of the rotor and one of corners, which is on a rotor surface side, on both ends of each of the permanent magnets are connected by a straight line, a center between an N-pole and an S-pole of the permanent magnets is on a q-axis, and an angle formed by two straight lines on the q-axis side is ?, a first bridge part is provided between a flux barrier provided at the rotor core and the rotor surface, and ?>? is established when the first bridge part has a minimum width ?, and the flux barrier has a minimum width ? on the q-axis.Type: ApplicationFiled: September 14, 2016Publication date: August 16, 2018Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Moriyuki HAZEYAMA, Yoshihiro MIYAMA, Taiga KOMATSU, Junji KITAO
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Publication number: 20180177080Abstract: In the electric power converting apparatus, a frame unit is configured by mounting an inner frame into an outer frame, brackets are disposed on two axial ends of the frame unit, an annular liquid cooling jacket is configured between the inner frame and the outer frame, the inner frame is configured into a tubular shape by bending a plurality of base members that are linked consecutively at thin linking portions between the base members, and butting together the base members that are positioned at two ends in a direction of linking, the power modules are mounted to respective side wall surfaces of the inner frame that face radially inward, and sealing members that seal the liquid cooling jacket are respectively disposed in the butted portion of the base members, and between the frame unit and the bracket.Type: ApplicationFiled: April 22, 2015Publication date: June 21, 2018Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Junji KITAO, Yoshihiro MIYAMA, Akihiro DAIKOKU, Norihiro WATANABE
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Publication number: 20180175707Abstract: A motor according to the present invention includes: a stator core that surrounds an outer circumference of a rotor, and that includes: a yoke portion; and a plurality of tooth portions in which tip portions protrude radially inward toward a central axis of the rotor from an inner circumferential surface of the yoke portion; a heat sink that is disposed so as to face a first end surface of the stator core in an axial direction of the stator core; a stator coil that includes phase coil portions that are configured using conducting wires that are mounted to the stator core; and a coil fixing member that is disposed on coil end portions of the phase coil portions, that fixes the coil end portions in a state of surface contact with the heatsink.Type: ApplicationFiled: April 5, 2016Publication date: June 21, 2018Applicant: Mitsubishi Electric CorporationInventors: Yoshihiro MIYAMA, Hideaki ARITA, Akihiro DAIKOKU
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Patent number: 10003233Abstract: In a mechanically and electrically integrated rotary electric machine, a motor portion and an inverter portion are inserted inside a cylindrical frame. The motor portion has a plurality of coils. The inverter portion has a plurality of switching elements. The coils and the switching elements are electrically connected by a connector. The connector has: an end portion connector that distributes sinusoidal electric currents from the switching elements to the respective coils; and a plurality of axial connectors that direct the sinusoidal electric currents from the switching elements to the end portion connector. The end portion connector is disposed on an end portion of the motor portion near an output shaft. The axial connectors are disposed parallel to an axial direction of the frame so as to pass from the switching elements through a mounted region of the motor portion.Type: GrantFiled: June 9, 2014Date of Patent: June 19, 2018Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Norihiro Watanabe, Yoshihiro Miyama, Hideaki Arita, Akihiro Daikoku
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Publication number: 20180145617Abstract: One end of each of phase conductors wound around a stator core in a wave winding arrangement is connected to a positive electrode terminal of a DC power supply through a first positive electrode side switch and is connected to a negative electrode terminal of the DC power supply through a second negative electrode side switch. The other end of the phase conductor is connected to the negative electrode terminal of the DC power supply through a first negative electrode side switch and is connected to the positive electrode terminal of the DC power supply through a second positive electrode side switch. The first positive electrode side switch, the second negative electrode side switch, the first negative electrode side switch, and the second positive electrode side switch are controlled by a controller, whereby amplitude and phase of current passing through each of the phase conductors are individually controlled.Type: ApplicationFiled: July 27, 2015Publication date: May 24, 2018Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yoshihiro MIYAMA, Hideaki ARITA, Akihiro DAIKOKU, Kan AKATSU, Hiroki HIJIKATA
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Patent number: 9966824Abstract: A first stator core and a second stator ore are configured by arranging core block pairs into an annular shape, the core block pairs being configured by stacking together core blocks so as to be spaced apart axially, each of the core blocks including a core back portion and one tooth, and a permanent magnet is configured so as to be divided into a plurality of magnet blocks that each include: a base portion; one shaft portion that protrudes radially inward from an inner circumferential surface of the base portion; and flange portions that protrude on two circumferential sides from a radially inner end portion of the shaft portion, the magnet blocks being held between the core block pairs such that the base portion and the shaft portion are positioned inside the core block pairs and such that the flange portions protrude circumferentially from the core block pairs.Type: GrantFiled: July 16, 2014Date of Patent: May 8, 2018Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Toru Ogawa, Hideaki Arita, Akihiro Daikoku, Taiga Komatsu, Yoshihiro Miyama