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公开(公告)号：US20180248433A1
公开(公告)日：2018-08-30
申请号：US15759845
申请日：2016-02-26
发明人： Kodai OKAZAKI , Masatsugu NAKANO , Kazumasa ITO , Yu HIROTANI , Hiroko IKEDA , Koji KAWAMURA
摘要： In the armature winding of a rotary electric machine, in a series coil portion group, the numbers of turns of conducting wire in the coil portions that have an electrical angular phase difference of θk that satisfies θ1
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公开(公告)号：US20180198330A1
公开(公告)日：2018-07-12
申请号：US15575422
申请日：2015-09-30
发明人： Yuji TAKIZAWA , Satoru AKUTSU , Masafumi OKAZAKI , Hiroshi AIDA , Yu HIROTANI , Kazumasa ITO
摘要： It has been discovered that torque ripples can be reduced by adopting a shape in which: the width of a shoe connection formed in a stator of a permanent magnet motor is equal to or smaller than the thickness of each of core pieces constituting a stator core; and a relationship of 0.7≤Wm/(Tm×Gm)≤3.3 is satisfied, where Wm is the length of the long side of a flat plate-shaped permanent magnet embedded in a rotor, Tm is the length of the short side of the permanent magnet, and Gm is the maximum distance from the outer circumference of the rotor to the permanent magnet.
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公开(公告)号：US20180115202A1
公开(公告)日：2018-04-26
申请号：US15562980
申请日：2015-04-22
发明人： Yu HIROTANI , Kazumasa ITO , Yuji TAKIZAWA , Satoru AKUTSU , Hiroshi AIDA , Shusuke HORI
CPC分类号： H02K1/16 , B62D5/04 , H02K1/146 , H02K1/18 , H02K1/185 , H02K1/2706 , H02K1/2746 , H02K3/32 , H02K3/48 , H02K29/03 , H02K2201/06 , H02K2213/03
摘要： In the rotary electric machine according to the present invention, a plurality of core sheets include linked core sheets that include linking portions that protrude circumferentially from flange portions so as to link together tip portions of adjacent tooth portions, at least one sheet of the linked core sheets is formed such that a tooth tip portion shape is mirror-asymmetrical relative to a tooth central axis that passes through a circumferential center of the tooth portions, and a stator core is configured by laminating the linked core sheets such that circumferential positions of the linking portions are offset.
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公开(公告)号：US20160056696A1
公开(公告)日：2016-02-25
申请号：US14779445
申请日：2014-03-04
发明人： Shinichi ITO , Sachiko KAWASAKI , Yu HIROTANI , Masatsugu NAKANO , Toyoaki UDO , Hiroyuki MATSUO
IPC分类号： H02K15/085 , H02K15/04
CPC分类号： H02K15/085 , H02K1/165 , H02K3/12 , H02K15/04 , H02K2213/03
摘要： 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.
摘要翻译： 定子铁心包括由周向上排列的多个齿构成的内环铁心和连接多个齿的内圆周部分的连接部分; 以及要与内环芯的外周面接合的外圈芯。 定子铁心的槽在圆周方向宽度（a）上在比外周侧的周向宽度（b）小的内周侧。 由包括多个槽容纳部分的导电线圈和连接槽容纳部分的多个线圈端部构成的定子线圈从内环芯的径向外侧插入并放置在槽中。
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公开(公告)号：US20240235294A9
公开(公告)日：2024-07-11
申请号：US18277317
申请日：2021-02-26
发明人： Hidenori SASAKI , Kenta MOTOYOSHI , Yu HIROTANI , Hiroko IKEDA , Shohei FUJIKURA
IPC分类号： H02K1/278
CPC分类号： H02K1/278 , H02K2213/03
摘要： A rotating electrical machine includes a stator and a rotor, the rotor includes a rotor core and a plurality of magnetic poles, the plurality of magnetic poles includes a plurality of magnet poles formed by permanent magnets, and a plurality of dummy poles, the magnet poles and the dummy poles are alternately disposed in both an axial direction and a circumferential direction, non-magnetic holes are provided between the magnet poles and the dummy poles that are adjacent in the axial direction, and when a length of each magnet pole in the axial direction is tm, a length of each dummy pole in the axial direction is tc, a length of each non-magnetic hole in the axial direction is ta, and a length of the rotor core in the axial direction is lc, the rotating electrical machine satisfies tm>tc and lc
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公开(公告)号：US20220037942A1
公开(公告)日：2022-02-03
申请号：US17276538
申请日：2018-11-27
发明人： Kodai OKAZAKI , Kenta MOTOYOSHI , Yuji TAKIZAWA , Hiroko IKEDA , Hidenori SASAKI , Yu HIROTANI , Satoru AKUTSU , Masafumi OKAZAKI , Natsumi SUGI
摘要： A rotor core of a rotating electrical machine has interpole bridges each disposed on an outer circumferential side with respect to a permanent magnet in a non-magnetic portion between the poles, and interpole diameter bridges each surrounded by two permanent magnets and an interpole bridge. The outer circumferential surface of each interpole bridge is formed by a first flat surface. Thus, a path of a magnetic flux passing through a magnetic gap is lengthened, so that a q-axis inductance is reduced. In addition, a width in a radial direction of each interpole bridge and a width in a circumferential direction of each interpole diameter bridge are constant, and each interpole bridge and each interpole diameter bridge are disposed so as to be perpendicular to each other to form a T shape. Thus, the concentration of stress during press-fitting of the permanent magnet into a magnet hole can be reduced.
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公开(公告)号：US20210075305A1
公开(公告)日：2021-03-11
申请号：US16961959
申请日：2018-02-28
发明人： Yuji TAKIZAWA , Hiroko IKEDA , Shinichi YAMAGUCHI , Yu HIROTANI , Masafumi OKAZAKI , Satoru AKUTSU
摘要： A permanent magnet motor includes a rotor having a field pole of a rotor core, wherein the field pole has a radius smaller than an arc centered on a shaft of the rotor, a multiple of slits are formed in the field pole, the multiple of slits are disposed so that an interval between a first central line positioned between a multiple of the slits and a second central line positioned between a neighboring multiple of the slits increases as the first central line and the second central line head toward an outer peripheral side of the rotor core, and of the multiple of slits of the field pole, a first slit disposed in a central position of the field pole, and a second slit and a third slit disposed on either side of the first slit, are disposed within 20% of a circumferential direction width of the permanent magnet.
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公开(公告)号：US20180248447A1
公开(公告)日：2018-08-30
申请号：US15557365
申请日：2016-01-08
发明人： Koji KISE , Yu HIROTANI
摘要： A rotary electric machine including a stator and a rotor. The stator includes a stator core and an armature winding. The rotor includes a rotor core and a plurality of permanent magnets. The rotor core is disposed on the periphery of a shaft such that a magnetic gap is formed between the rotor core and the stator. The plurality of permanent magnets project in a rotary axis direction from an end face of the rotor core. The rotary electric machine further includes a plurality of magnet holding portions provided respectively on parts of the plurality of permanent magnets that project from the end face of the rotor core. Spaces are provided between the plurality of magnet holding portions.
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公开(公告)号：US20180248432A1
公开(公告)日：2018-08-30
申请号：US15752837
申请日：2016-09-16
发明人： Hiroko IKEDA , Yu HIROTANI , Masatsugu NAKANO , Kazumasa ITO , Kodai OKAZAKI , Koji KAWAMURA
CPC分类号： H02K3/28 , B62D5/0424 , B62D5/0448 , H02K1/146 , H02K1/274 , H02K3/18 , H02K3/522 , H02K29/03 , H02K2203/06
摘要： 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.
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公开(公告)号：US20230378832A1
公开(公告)日：2023-11-23
申请号：US18030825
申请日：2020-10-27
发明人： Yu HIROTANI , Kenta MOTOYOSHI , Hiroko IKEDA , Shohei FUJIKURA
CPC分类号： H02K1/278 , H02K1/02 , H02K16/02 , H02K2213/03 , H02K2201/03
摘要： In an electric rotating machine according to this application, a maximum height of a permanent magnet in a rotor and a flange-part root radial thickness of the tooth portion in the stator can be set properly, so that it is possible to eliminate unbalanced magnetic saturation at flange parts of the heads of the tooth portions. This makes it possible to reduce an unbalance between torque ripples that are generated respectively by an upper-side rotor block and a lower-side rotor block when an electric power steering apparatus is driven under static steering conditions, to thereby achieve an electric rotating machine with a suppressed torque ripple. With the use of this electric rotating machine, since the torque-ripple unbalance is reduced, it is possible to achieve an electric power steering apparatus with a suppressed torque ripple.
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