-
公开(公告)号：US10734856B2
公开(公告)日：2020-08-04
申请号：US15559869
申请日：2016-07-29
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Takahiro Mizuta , Moriyuki Hazeyama , Kazumasa Ito , Shinichi Yamaguchi , Masatsugu Nakano , Yoshiharu Takashima , Yoshiki Okada , Masafumi Ogawa
Abstract: In a rotary electric machine, a conductive member surrounds a shaft and a plurality of permanent magnets provided on an outer peripheral portion of the shaft as a whole, and a holding member surrounds the shaft, the plurality of permanent magnets, and the conductive member as a whole. A conductivity of the conductive member is higher than a conductivity of the permanent magnet. The conductive member includes first and second opposing portions that oppose each other via a gap in a circumferential direction. An inter-opposing portion region existing between the first and second opposing portions is positioned within a circumferential direction range of an inter-magnet region existing between permanent magnets that are adjacent to each other in the circumferential direction.
-
公开(公告)号：US10177611B2
公开(公告)日：2019-01-08
申请号：US14906874
申请日：2014-02-26
Applicant: Mitsubishi Electric Corporation
Inventor： Sachiko Kawasaki , Atsushi Sakaue , Hisashi Namura , Shinichi Ito , Satoru Akutsu , Masatsugu Nakano , Toyoaki Udo
Abstract: A stator core for a rotating electrical machine includes an annular yoke portion; a tooth group fitted to an inner side of the yoke portion and formed such that both ends in a circumferential direction on an inner circumferential side of adjacent teeth are integrally connected with each other by a thin connection portion; and a slot for accommodating a stator winding. The yoke portion has grooves at regular intervals in an inner circumferential surface thereof and extending in an axial direction of the stator, the grooves each having a V shape such that a cross section thereof perpendicular to the axial direction opens toward an inner side of the stator core. Each tooth has, at an outer-circumferential-side end thereof, a fitting portion whose cross section perpendicular to the axial direction is formed in a wedge shape so as to allow the tooth to be fitted along the corresponding groove.
-
公开(公告)号：US10116177B2
公开(公告)日：2018-10-30
申请号：US14910800
申请日：2013-10-22
Applicant: Mitsubishi Electric Corporation
Inventor： Tetsuya Iwata , Isao Sonoda , Satoru Akutsu , Masatsugu Nakano
Abstract: A rotor (1) for a rotary electric machine includes a rotor core (2) including a first core portion (20) having a plurality of core pieces (5, 6) joined together through caulking portions (2a) and a hollow first lightening portion (20a), and a second core portion (21) having a plurality of core pieces (7, 8) joined together through caulking portions (2a) and a press-fit portion (21b). A radial magnetic path width of a ring-shaped outer circumferential portion formed by laminating the first core portion (20) and the second core portion (21) changes along a circumferential direction of the rotor core (2). Therefore, a weight and an inertia can be reduced.
-
公开(公告)号：US09755470B2
公开(公告)日：2017-09-05
申请号：US15311068
申请日：2015-08-04
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Yu Hirotani , Masatsugu Nakano , Kazumasa Ito , Hiroko Ueyama
Abstract: In a rotary electric machine, when armature coil bodies of respective phases in which first and second armature windings, are both wound around 6 k×n teeth are set as Ua, Va, and Wa, armature coil bodies of respective phases in which only the first and armature winding is wound around 6 m×n teeth are set as Ub, Vb, and Wb, and armature coil bodies of respective phases in which only the second armature winding is wound around 6 m×n teeth are set as Uc, Vc, and Wc, Ua, Va, Wa, Ub, Vb, Wb, Uc, Vc, and Wc are respectively arranged so as to exhibit 2 n-fold rotational symmetry about an axial center of a rotor.
-
公开(公告)号：US09923438B2
公开(公告)日：2018-03-20
申请号：US14779445
申请日：2014-03-04
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Shinichi Ito , Sachiko Kawasaki , Yu Hirotani , Masatsugu Nakano , Toyoaki Udo , Hiroyuki Matsuo
IPC: H01F7/06 , H02K15/085 , H02K1/16 , H02K3/12 , H02K15/04
CPC classification number: H02K15/085 , H02K1/165 , H02K3/12 , H02K15/04 , H02K2213/03
Abstract: A stator core includes an inner ring core composed of a plurality of teeth arranged in the circumferential direction and a connection portion connecting inner circumferential portions of the plurality of teeth; and an outer ring core to be joined to an outer circumferential surface of the inner ring core. Slots of the stator core each have a circumferential direction width (a) on an inner circumference side smaller than a circumferential direction width (b) on an outer circumference side. A stator coil composed of conductive coils including a plurality of slot accommodated portions and a plurality of coil end portions connecting the slot accommodated portions is inserted and placed in the slots from an outer side in the radial direction of the inner ring core.
-
Patent Agency Ranking
公开(公告)号：US11757340B2
公开(公告)日：2023-09-12
申请号：US16992632
申请日：2020-08-13
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroyuki Takashima , Masatsugu Nakano , Kosho Yamane , Masaya Inoue
CPC classification number: H02K29/03 , H02K1/185 , H02K1/276 , H02K7/075 , H02K7/083 , H02K21/14 , H02K2201/06 , H02K2213/03
Abstract: Provided is a rotating electric machine capable of reducing oscillations and noise generated in the rotating electric machine. The rotating electric machine includes a stator, a rotor, and a frame. The rotor includes: a rotor core; and a plurality of permanent magnets, and the rotor is divided into a plurality of blocks. The plurality of blocks include: a skew-angle-increasing pair of blocks; and a skew-angle-decreasing pair of blocks. The frame includes: a body portion configured to hold the stator; and a flange portion, which projects outward from the body portion, and the body portion has a thickness that changes from one end to another end of the body portion in an axial direction thereof.
-
7.发明申请MULTIPLEX MULTIPHASE WINDING AC MOTOR AND ELECTRIC POWER STEERING APPARATUS 审中-公开多功能多相绕组交流电动机和电动转向装置公开(公告)号：US20150280502A1
公开(公告)日：2015-10-01
申请号：US14433783
申请日：2013-03-08
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Yu Hirotani , Yuji Takizawa , Masatsugu Nakano , Satoru Akutsu , Toyoaki Udo
Abstract: A multiplex multiphase winding AC motor includes an armature iron core provided with a plurality of teeth and a plurality of slots, an armature winding provided with two or more groups of multiphase windings that are wound around the teeth and are contained in the slots, a plurality of motor driving apparatuses independently connected with the two or more groups of multiphase windings, and a magnetic-field-pole iron core provided with a plurality of magnetic-field poles arranged in such a way as to face the armature iron core through a gap; in the magnetic-field-pole iron core, a plurality of magnetic resistance elements for impeding a magnetic-flux flow in the circumferential direction thereof are formed.
Abstract translation: 多路复用多相绕组交流电动机包括设置有多个齿和多个槽的电枢铁芯，设置有缠绕在齿上并被容纳在槽中的两组或更多组多相绕组的电枢绕组，多个 与两组以上的多相绕组独立地连接的电动机驱动装置，以及设置有多个磁场极的磁场极铁芯，其以通过间隙面向电枢铁芯的方式配置; 在磁场极铁芯中形成有用于阻止其周向上的磁通流的多个磁阻元件。
-
公开(公告)号：US11283332B2
公开(公告)日：2022-03-22
申请号：US16614607
申请日：2018-02-26
Applicant: Mitsubishi Electric Corporation
Inventor： Junji Kitao , Tomohira Takahashi , Yusuke Kimoto , Yoshihiro Miyama , Masatsugu Nakano , Yuya Tanaka
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.
-
公开(公告)号：US20210057975A1
公开(公告)日：2021-02-25
申请号：US16992632
申请日：2020-08-13
Applicant: Mitsubishi Electric Corporation
Inventor： Hiroyuki TAKASHIMA , Masatsugu Nakano , Kosho Yamane , Masaya Inoue
Abstract: Provided is a rotating electric machine capable of reducing oscillations and noise generated in the rotating electric machine. The rotating electric machine includes a stator, a rotor, and a frame. The rotor includes: a rotor core; and a plurality of permanent magnets, and the rotor is divided into a plurality of blocks. The plurality of blocks include: a skew-angle-increasing pair of blocks; and a skew-angle-decreasing pair of blocks. The frame includes: a body portion configured to hold the stator; and a flange portion, which projects outward from the body portion, and the body portion has a thickness that changes from one end to another end of the body portion in an axial direction thereof.
-
公开(公告)号：US10404124B2
公开(公告)日：2019-09-03
申请号：US15752837
申请日：2016-09-16
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Hiroko Ikeda , Yu Hirotani , Masatsugu Nakano , Kazumasa Ito , Kodai Okazaki , Koji Kawamura
Abstract: A rotary electric machine includes: a rotor; and a stator including: a stator core; and an armature winding that is mounted to the stator core. The armature winding includes by a plurality of identical-phase winding portions in which identical-phase coil portions among coil portions in which conducting wires are wound in concentration onto respective teeth are connected together into a series circuit by crossover wires, and that also have lead wires at two end portions. Each of the lead wires of each of the identical-phase winding portions is led out in a first axial direction of the rotor from coil portions that have identical phase, that are disposed to be adjacent in a circumferential direction of the stator core; and all of the crossover wires of each of the identical-phase winding portions are led out in a second axial direction of the rotor.
-
-
-
-
-
-
-
-
-
Search Results
19
records
(took 0.019 seconds)
