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    ROTOR ASSEMBLY AND CONSEQUENT-POLE MOTOR
    4.
    发明公开
    ROTOR ASSEMBLY AND CONSEQUENT-POLE MOTOR 审中-公开

    公开(公告)号：EP4009494A1

    公开(公告)日：2022-06-08

    申请号：EP20850654.3

    申请日：2020-06-23

    Applicant: Gree Electric Appliances, Inc. of Zhuhai

    Inventor： CHEN, Bin ,  LI, Quanfeng ,  XIAO, Yong ,  DING, Jiating

    IPC: H02K1/27 ,  H02K21/02

    Abstract: The present disclosure provides a rotor assembly and an alternating-pole motor. The rotor assembly includes a rotor core including permanent magnetic poles and alternating poles that are arranged alternately in a circumferential direction, each permanent magnetic pole includes a mounting groove (2), a permanent magnet (3) is mounted in the mounting groove (2), polarities of the permanent magnets (3) facing an outer periphery of the rotor core (1) are the same, both ends of the mounting groove (2) are respectively provided with a second air slot (5), the second air slot (5) includes a slot body and a first extension part (6) and a second extension part (7) that are extended from the slot body to a center line of a magnetic pole, and the first extension part (6) and the second extension part (7) are sequentially disposed to form a stepped slot with a decreasing radial thickness. According to the rotor assembly of the present disclosure, a problem that an increase in a torque ripple caused by back-EMF harmonic of the alternating-pole motor is resolved, a back-EMF harmonic content is significantly reduced, and motor performance is improved.

    MOTOR AND ELECTRIC VEHICLE INCLUDING THE SAME
    6.
    发明公开
    MOTOR AND ELECTRIC VEHICLE INCLUDING THE SAME 审中-公开

    公开(公告)号：EP3846325A1

    公开(公告)日：2021-07-07

    申请号：EP20178200.0

    申请日：2020-06-04

    Applicant: LG Electronics Inc.

    Inventor： KANG, Joohang ,  KIM, Yoonuk ,  LEE, Junggu

    IPC: H02K21/02 ,  H02K1/16 ,  H02K3/487

    Abstract: A motor may include a shield member that screens a magnetic field between a stator and a rotor, and a moving member that controls a position of the shield member in response to an electromagnetic interaction with the stator such that the screening of the magnetic field is configured to be selectively performed. The motor may prevent a generation of a counter electromotive force or regenerative braking.

    HIGH TORQUE DENSITY ELECTRICAL MACHINE
    8.
    发明公开
    HIGH TORQUE DENSITY ELECTRICAL MACHINE 审中-公开

    公开(公告)号：EP3598617A3

    公开(公告)日：2020-12-02

    申请号：EP19170260.4

    申请日：2009-06-10

    Applicant: General Electric Company

    Inventor： Qu, Ronghai ,  Jansen, Patrick L.

    IPC: H02K16/02 ,  H02K51/00 ,  H02K21/02 ,  H02K21/12 ,  H02K21/24 ,  H02K16/04 ,  H02K1/27 ,  H02K1/14 ,  H02K7/18

    Abstract: An electrical machine 10 is provided. The electrical machine 10 includes a rotor 24 comprising an inner rotor 28 having a plurality of inner rotor poles 36 and an outer rotor 26 having a plurality of outer rotor poles. The electrical machine 10 further comprises a stator 58 configured to modulate a magnetic flux and to transmit torque to inner rotor 28 and the outer rotor 26, the stator 58 comprising a stator core 116 interposed concentrically between the inner rotor and the outer rotor; a multiple of stator windings disposed in a plurality of stator slots, the stator windings configured to form a multiple of stator poles. The stator 58 further comprises a plurality of stator teeth 118 interposed between the plurality of stator slots 120, wherein an arithmetic sum or difference of twice number of stator teeth and a number of the stator poles equals a number of rotor poles 186.

    ELEKTROMOTOR UND VERFAHREN ZU SEINEM BETRIEB
    9.
    发明公开
    ELEKTROMOTOR UND VERFAHREN ZU SEINEM BETRIEB 审中-公开

    公开(公告)号：EP3731384A1

    公开(公告)日：2020-10-28

    申请号：EP20170237.0

    申请日：2020-04-17

    Applicant: SMS Group GmbH

    Inventor： de Kock, Peter ,  Plate, Frank ,  Timmerbeul, Walter

    IPC: H02K7/12 ,  H02K7/102 ,  H02K21/02 ,  B21C47/00 ,  B21C47/34

    Abstract: Die Erfindung betrifft einen Elektromotor und ein Verfahren zu dessen Betrieb. Der Elektromotor 100 weist einen Stator 110 und einen Rotor 120 mit einem dazwischen befindlichen Luftspalt 112 auf. Mit Hilfe eines Stellgliedes 130 ist die Größe des Luftspaltes 112 durch eine Veränderung der Relativposition von Stator und Rotor zueinander innerhalb eines motorsteuernden Stellbereiches X1 variabel einstellbar. Um die Bremswirkung des Elektromotors zu verbessern und um auch eine Fixierung von Stator und Rotor im Stillstand zueinander zu gewährleisten, sieht die Erfindung eine mechanische Bremseinrichtung 140 vor. Diese wird gebildet durch mindestens eine dem Stator zugeordnete statorseitige Bremsfläche 114 und mindestens eine dem Rotor zugeordnete rotorseitige Bremsfläche 124. Das Stellglied ist dann weiterhin ausgebildet zum Anstellen der statorseitigen und der rotorseitigen Bremsflächen mit einer Bremskraft gegeneinander, wobei gleichzeitig die Relativposition von Rotor und Stator zueinander innerhalb eines bremsenden Stellbereiches verändert wird.

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