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8 条记录 (耗时 0.011 秒)

    Rotor, motor and electrical device including the motor
    1.
    发明授权
    Rotor, motor and electrical device including the motor 有权

    公开(公告)号：US10855125B2

    公开(公告)日：2020-12-01

    申请号：US16142070

    申请日：2018-09-26

    申请人： Nidec Corporation

    发明人： Sheng-Chan Yen ,  Hsin-Nan Lin ,  Yu-Wei Hsu ,  Cheng-Tsung Liu

    IPC分类号： H02K1/24 ,  H02K1/16 ,  H02K29/03 ,  H02K19/10

    摘要： A motor includes a stator including wound multiphase coils and stator slots that accommodate the multiphase coils, and a rotor provided at an inner side of the stator. Poles are provided in a direction of rotation, and sets of flux barriers are provided on the rotor, each of the poles respectively corresponding to a set of the flux barriers. A ratio between a total number of the stator slots and a product of a total number of poles of the rotor and a phase number of the multiphase coils is a non-integer. With the structure of the motor, a torque ripple is reduced while an output torque is kept unchanged.

    Motor, power unit, and bulldozer
    2.
    发明授权
    Motor, power unit, and bulldozer 有权

    公开(公告)号：US11469648B2

    公开(公告)日：2022-10-11

    申请号：US16477223

    申请日：2018-02-19

    申请人： Nidec Corporation

    发明人： Hsin-Nan Lin ,  Guo-Jhih Yan ,  Sheng-Chan Yen ,  Yu-Wei Hsu ,  Kuo-Min Wang ,  Cheng-Tsung Liu

    IPC分类号： H02K11/01 ,  E02F3/76 ,  E02F3/84 ,  E02F9/02 ,  E02F9/20 ,  H02K7/04

    摘要： A motor includes a rotor including a rotating shaft extending along a center axis, a cylindrical rotor core provided outside the rotating shaft in a radial direction, and two discoid weight plates provided at two ends of the cylindrical rotor core in an axial direction, and a stator opposing the rotor in the radial direction. A radius of each weight plate is smaller than a radius of the rotor core, and a difference between the radius of the rotor core and the radius of each weight plate is larger than an air gap between an outside of the rotor core in the radial direction and an inside of the stator in the radial direction.

    Rotor, motor, and driving apparatus
    3.
    发明授权
    Rotor, motor, and driving apparatus 有权

    公开(公告)号：US11418098B2

    公开(公告)日：2022-08-16

    申请号：US16847662

    申请日：2020-04-14

    申请人： NIDEC CORPORATION

    发明人： Sheng-Chan Yen ,  Guo-Jhih Yan ,  Ta-Yin Luo ,  Yu-Wei Hsu ,  Hsin-Nan Lin ,  Cheng-Tsung Liu

    IPC分类号： H02K21/22 ,  H02K1/276 ,  H02K15/02

    摘要： Embodiments of the disclosure provide a rotor, a motor, and a driving apparatus. The rotor is defined by laminated electromagnetic steel plates. The electromagnetic steel plate includes a plurality of through hole groups running through the electromagnetic steel plate, and each through hole group includes a plurality of through holes. A central axis of a magnetic pole of the rotor is used as a d axis, and an axis that is 45 degrees from the d axis is used as a q axis, where an outer peripheral surface of the rotor that is between the d axis and the q axis is recessed radially inward relative to an outer peripheral surface of another portion of the rotor, so that the rotor is noncircular when observed in an axial direction.

    Rotor, motor, and drive device
    4.
    发明授权
    Rotor, motor, and drive device 有权

    公开(公告)号：US12051944B2

    公开(公告)日：2024-07-30

    申请号：US17635015

    申请日：2020-08-27

    申请人： Nidec Corporation

    发明人： Yu-Wei Hsu ,  Ta-Yin Luo ,  Hsin-Nan Lin ,  Sheng-Chan Yen ,  Guo-Jhih Yan ,  Cheng-Tsung Liu

    IPC分类号： H02K1/276 ,  H02K21/14 ,  H02K29/03

    CPC分类号： H02K1/2766 ,  H02K21/14 ,  H02K29/03

    摘要： A rotor includes a stack of electromagnetic steel plates each including through-hole groups with through-holes extending through the respective electromagnetic steel plates. In each of the through-hole groups, at least one of the through-holes accommodates a magnet and at least a portion of the through-holes that does not accommodate any magnet is filled with an electrically conductive material. When the rotor is seen axially, at two circumferential sides of a magnetic flux passage that is adjacent to the magnet, a width of the magnetic flux passage adjacent a first side of the magnet is larger than a width of the magnetic flux passage near a second side of the magnet.

    Rotor, motor including rotor, and power unit including motor
    5.
    发明授权
    Rotor, motor including rotor, and power unit including motor 有权

    公开(公告)号：US11018534B2

    公开(公告)日：2021-05-25

    申请号：US16477222

    申请日：2018-02-19

    申请人： Nidec Corporation

    发明人： Sheng-Chan Yen ,  Yu-Wei Hsu ,  Guo-Jhih Yan ,  Hsin-Nan Lin ,  Kuo-Min Wang ,  Cheng-Tsung Liu

    IPC分类号： H02K1/24 ,  H02K19/10 ,  H02K29/03

    摘要： A rotor is located around an outer periphery of a rotation shaft of a motor and rotates together with the rotation shaft. The rotor includes magnetic steel plates laminated in an axial direction and including a through-hole group passing therethrough in the axial direction. The through-hole group includes through-holes each including, as a central line, an imaginary line extending in the radial direction and having an arcuate shape extending from the central line to both sides and radially outward. The through-holes are arranged in the radial direction. Among the through-holes, a radius of curvature of an arcuate radially inner side surface of the radially innermost through-hole is the smallest, and/or a radius of curvature of an arcuate radially outer side surface of the radially outermost through-hole is the largest.

    Rotor and motor having rotor
    7.
    发明授权
    Rotor and motor having rotor 有权

    公开(公告)号：US11881746B2

    公开(公告)日：2024-01-23

    申请号：US17270842

    申请日：2019-09-03

    申请人： NIDEC CORPORATION

    发明人： Hsin-Nan Lin ,  Sheng-Chan Yen ,  Ta-Yin Luo ,  Guo-Jhih Yan ,  Yu-Wei Hsu ,  Cheng-Tsung Liu

    IPC分类号： H02K1/24 ,  H02K1/02 ,  H02K1/28

    CPC分类号： H02K1/246 ,  H02K1/02 ,  H02K1/28 ,  H02K2213/03

    摘要： An embodiment of the present invention provides a rotor and a motor having the rotor. By providing a plurality of flux barrier groups and slot groups at intervals in a circumferential direction of the rotor iron core, it is possible to flexibly arrange the numbers of the flux barrier groups and the slot groups so as to meet the requirements for the number of poles of different products. In addition, by flexibly adjusting the quantity ratio between the flux barrier groups and the slot groups and/or the quantity relationship between the flux barriers in the flux barrier group and the slots in the slot group, it is possible to meet the requirements for motor efficiency and starting capacity of different products. Further, since the processing jig of the rotor only requires processing of the structures of the flux barriers and the slots, the manufacturing cost can be reduced.