Patents by Inventor Junji KITAO

Junji KITAO 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: 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: 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
  • 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: 20180233973
    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: Application
    Filed: September 14, 2016
    Publication date: August 16, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Moriyuki HAZEYAMA, Yoshihiro MIYAMA, Taiga KOMATSU, Junji KITAO
  • Publication number: 20180177080
    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: Application
    Filed: April 22, 2015
    Publication date: June 21, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Junji KITAO, Yoshihiro MIYAMA, Akihiro DAIKOKU, Norihiro WATANABE
  • Publication number: 20170346353
    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: Application
    Filed: November 18, 2015
    Publication date: November 30, 2017
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Junji KITAO, Moriyuki HAZEYAMA, Yoshihiro MIYAMA, Takeshi MORI, Akihiro DAIKOKU