中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

107 records (took 0.025 seconds)

    Method of manufacturing a rotor for electric motors and associated rotor
    106.
    发明公开
    Method of manufacturing a rotor for electric motors and associated rotor 有权
    Verfahren zur Herstellung eines RotorsfürElektromotoren undzugehörigerRotor

    公开(公告)号：EP2712061A3

    公开(公告)日：2015-03-04

    申请号：EP13184183.5

    申请日：2013-09-12

    Applicant: Mavel S.r.l. ,  IFP Energies nouvelles

    Inventor： Bettoni, Davide

    IPC: H02K1/27 ,  H02K15/03

    CPC classification number: H02K1/27 ,  H02K1/2733 ,  H02K15/03 ,  Y10T29/49012

    Abstract: A method of manufacturing a rotor (4) for an electric motor is described, said method comprising the steps of:
    a) providing a magnet made of a sintered magnetic material, said magnet having a first diameter;
    b) providing a radial holding sheath made of a composite material, said sheath having an inner diameter which is smaller than the said first diameter;
    c) reducing said first diameter of said magnet to a second diameter;
    d) fitting said radial holding sheath onto said magnet when said magnet has the diameter; and
    e) letting the cylindrical magnet with the sheath fitted thereon interfere, thus allowing the sheath to exert inward pressures on the cylindrical magnet.
    The invention also describes a rotor which can be obtained with the method described above.

    Abstract translation: 描述制造用于电动机的转子（4）的方法，所述方法包括以下步骤：a）提供由烧结磁性材料制成的磁体，所述磁体具有第一直径; b）提供由复合材料制成的径向保持护套，所述护套的内径小于所述第一直径; c）将所述磁体的所述第一直径减小到第二直径; d）当所述磁体具有直径时，将所述径向保持护套装配到所述磁体上; 以及e）使装有其上的护套的圆柱形磁体干涉，从而允许护套在圆柱形磁体上施加向内的压力。 本发明还描述了可以用上述方法获得的转子。

    Electric machine comprising an alternating current electric motor and an inverter
    107.
    发明公开
    Electric machine comprising an alternating current electric motor and an inverter 审中-公开
    Elektrische Maschine mit Wechselstromelektromotor und Wechselrichter

    公开(公告)号：EP2738935A1

    公开(公告)日：2014-06-04

    申请号：EP13193243.6

    申请日：2013-11-18

    Applicant: Mavel S.r.l.

    Inventor： Bettoni, Davide

    IPC: H02P27/08 ,  H02P5/74

    CPC classification number: H02P25/22 ,  H02M7/53871 ,  H02P5/74 ,  H02P6/085 ,  H02P23/28 ,  H02P27/08

    Abstract: An electric machine is described, said machine comprising: an alternating current electric motor comprising two semi-windings and an inverter comprising at least two inverter branches which are electrically connected each one to a respective semi-winding. The machine also comprises a control unit which provides respective control signals to the two inverter branches so that they induce two alternating currents of frequency f R in the respective semi-windings. The control signals of the two inverter branches have a frequency f P smaller than the frequency f R and are also reciprocally out of phase by 180° relative to the frequency f P . This allows reducing ripples of the overall alternating current resulting from the sum of the two alternating currents provided by the two semi-windings, thereby approximating a sinusoidal waveform in a more accurate way and thereby reducing the power dissipated by the motor.

    Abstract translation: 描述了一种电机，所述机器包括：包括两个半绕组的交流电动机和包括至少两个逆变器分支的逆变器，每个逆变器分支电连接到相应的半绕组。 该机器还包括控制单元，其向两个反相器分支提供相应的控制信号，使得它们在相应的半绕组中感应出两个频率f R的交流电流。 两个反相器分支的控制信号具有小于频率f R的频率f P，并且相对于频率f P也相差180度。 这允许减少由两个半绕组提供的两个交流电的总和导致的整个交流电的波动，从而以更精确的方式近似正弦波形，从而降低由电动机消耗的功率。

Patent Agency Ranking