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).

  • Patent number: 10852163
    Abstract: 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: Grant
    Filed: October 31, 2016
    Date of Patent: December 1, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hitoshi Isoda, Yoshihiro Miyama, Tatsuo Nishimura, Hideaki Arita, Shinji Nishimura, Koji Nishizawa
  • Publication number: 20200295694
    Abstract: A rotating electric machine apparatus including: a rotating electric machine (REM) including a rotor and a stator; an inverter device including an inverter circuit (IC) for driving the REM and an inverter control unit (ICU) for controlling the IC; a detector, in which a first antenna is connected to a resonance circuitry, which is mounted to the REM and has a resonance characteristic that changes depending on a change in a physical quantity; and a detection processor receiving a response radio wave indicating a detection result of the change in the physical quantity from the first antenna while transmitting a transmission radio wave at a set carrier frequency from a second antenna, and comparing the detection result and the set value, to thereby obtain an abnormal state in the REM. The ICU controls output of the IC in accordance with an abnormal state signal from the detection processor.
    Type: Application
    Filed: November 24, 2017
    Publication date: September 17, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshihiro MIYAMA, Hideaki ARITA, Junji HORI, Tomohira TAKAHASHI, Kenzo MAKINO, Masaya INOUE
  • Publication number: 20200274411
    Abstract: A rotary electric machine including a rotor including a rotor core; permanent magnets to be embedded in the rotor core; and a one end-side end plate configured to support one end side of the rotor core. The rotor core has rotor refrigerant passages through which refrigerant for cooling the permanent magnets flows in an axial direction of the shaft. The one end-side end plate has an end plate refrigerant passage communicating with the rotor refrigerant passages. The end plate refrigerant passage has refrigerant reservoirs, each projecting to an outer side in a radial direction of the shaft.
    Type: Application
    Filed: February 28, 2018
    Publication date: August 27, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusuke KIMOTO, Junji KITAO, Tomohira TAKAHASHI, Yoshihiro MIYAMA, Junichi NAKAZONO
  • Publication number: 20200220398
    Abstract: A rotor of the permanent magnet rotating electric machine includes a rotor core, a plurality of magnets, and magnetic slits. Each of the magnetic slits is formed in a core region being a region between magnets of the plurality of magnets, and a gap. The magnetic slits are regions having a lower magnetic permeability than a magnetic permeability of the core region. One end of each of the magnetic slits, which is closer to an outer periphery of the rotor, is positioned in a portion of the core region on the same direction side as a direction of a force in a circumferential direction of the rotor, and another end closer to the rotation axis center of the rotor is positioned on the magnetic pole center or in a portion of the core region on a side opposite to the direction of the force.
    Type: Application
    Filed: July 6, 2018
    Publication date: July 9, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tomohira TAKAHASHI, Junji KITAO, Yoshihiro MIYAMA, Masatsugu NAKANO, Kosho YAMANE
  • Publication number: 20200186007
    Abstract: In a rotating electric machine, a rotor core has a rotor core cooling hole under a state of being coupled to a first gap at a position on a radially inner side with respect to a center portion of a first inner wall surface in a length direction. The rotor core has a radially-outer-side refrigerant flow path formed under a state of being coupled to a radially-outer-side end portion of the first gap. A first end plate has a communication path formed so as to extend from an inner end surface of the first end plate to the rotor core cooling hole. A second end plate has a discharge path formed so as to allow the radially-outer-side refrigerant flow path to communicate with an outside.
    Type: Application
    Filed: February 26, 2018
    Publication date: June 11, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Junji KITAO, Tomohira TAKAHASHI, Yusuke KIMOTO, Yoshihiro MIYAMA, Masatsugu NAKANO, Yuya TANAKA
  • Patent number: 10668917
    Abstract: 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: Grant
    Filed: August 19, 2016
    Date of Patent: June 2, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshihiro Miyama, Masaki Yamada, Takeshi Mori, Shigeki Harada, Moriyuki Hazeyama
  • Publication number: 20200092639
    Abstract: The present disclosure relates to a communication apparatus, a communication method, a program, and a telepresence system that can perform communication more smoothly. A sound processing unit processes, in accordance with a setting for a specific sound, the sound in performing communication using a video and a voice. For example, the sound processing unit performs processing on a sound input by an input unit, and the sound processed by the sound processing unit, and the original sound input by the input unit are both transmitted. Furthermore, the sound processing unit performs processing on a sound received by a receiving unit configured to receive a sound transmitted from another communication apparatus, and causes the sound to be output from an output unit. The present technology can be applied to a telepresence system, for example.
    Type: Application
    Filed: April 12, 2018
    Publication date: March 19, 2020
    Applicant: SONY CORPORATION
    Inventors: Seiji MIYAMA, Yoshihiro MANABE, Ryuichi NAMBA
  • Publication number: 20200041218
    Abstract: 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: Application
    Filed: December 13, 2017
    Publication date: February 6, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Junichi NAKAZONO, Shigetoshi IPPOSHI, Masaru SHINOZAKI, Yugo ASAI, Yusuke KIMOTO, Yoshihiro MIYAMA, Yuichi USUDA, Yoshitaka EIJIMA, Seiji MARUYAMA
  • Patent number: 10468947
    Abstract: 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: Grant
    Filed: April 5, 2016
    Date of Patent: November 5, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshihiro Miyama, Hideaki Arita, Akihiro Daikoku
  • Patent number: 10469003
    Abstract: 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: Grant
    Filed: July 27, 2015
    Date of Patent: November 5, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshihiro Miyama, Hideaki Arita, Akihiro Daikoku, Kan Akatsu, Hiroki Hijikata
  • Patent number: 10447096
    Abstract: 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: Grant
    Filed: November 18, 2015
    Date of Patent: October 15, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATIOn
    Inventors: Junji Kitao, Moriyuki Hazeyama, Yoshihiro Miyama, Takeshi Mori, Akihiro Daikoku
  • Patent number: 10447099
    Abstract: 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: Grant
    Filed: September 14, 2016
    Date of Patent: October 15, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Moriyuki Hazeyama, Yoshihiro Miyama, Taiga Komatsu, Junji Kitao
  • Publication number: 20190308606
    Abstract: 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: Application
    Filed: August 30, 2017
    Publication date: October 10, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yohei TAN, Yoshihiro MIYAMA, Shigeki HARADA, Masahiro IEZAWA
  • Publication number: 20190250011
    Abstract: 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: Application
    Filed: October 31, 2016
    Publication date: August 15, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hitoshi ISODA, Yoshihiro MIYAMA, Tatsuo NISHIMURA, Hideaki ARITA, Shinji NISHIMURA, Koji NISHIZAWA
  • Patent number: 10361603
    Abstract: 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: Grant
    Filed: October 20, 2014
    Date of Patent: July 23, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Junichi Aizawa, Yoshihiro Miyama, Akihiro Daikoku, Norihiro Watanabe, Hideaki Arita, Shota Hanioka, Shigetoshi Ipposhi
  • Patent number: 10211698
    Abstract: 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: Grant
    Filed: March 19, 2015
    Date of Patent: February 19, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shota Hanioka, Yoshihiro Miyama, Norihiro Watanabe, Akihiro Daikoku
  • Publication number: 20190036387
    Abstract: 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: Application
    Filed: November 29, 2016
    Publication date: January 31, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Moriyuki HAZEYAMA, Junji KITAO, Yoshihiro MIYAMA, Shogo OKAMOTO, Shinji NISHIMURA, Ryuichi KITORA, Ryuji KITAMURA, Hitoshi ISODA
  • Publication number: 20180337572
    Abstract: 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: Application
    Filed: January 19, 2017
    Publication date: November 22, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshihiro MIYAMA, Hideaki ARITA
  • Patent number: 10063123
    Abstract: 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: Grant
    Filed: April 22, 2015
    Date of Patent: August 28, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Junji Kitao, Yoshihiro Miyama, Akihiro Daikoku, Norihiro Watanabe
  • Publication number: 20180236999
    Abstract: 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: Application
    Filed: August 19, 2016
    Publication date: August 23, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshihiro MIYAMA, Masaki YAMADA, Takeshi MORI, Shigeki HARADA, Moriyuki HAZEYAMA