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    • 16. 发明授权
    • Electromagnetic rotary machine having magnetic bearing
    • 具有磁性轴承的电磁旋转机
    • US5955811A
    • 1999-09-21
    • US598375
    • 1996-02-08
    • Akira ChibaTadashi FukaoYasushi Maejima
    • Akira ChibaTadashi FukaoYasushi Maejima
    • F16C32/04F16C39/06H02K7/09H02K17/16H02K17/42
    • F16C32/0459F16C32/0491F16C32/0493H02K17/165H02K7/09
    • A high speed electromagnetic rotating machine is arranged to avoid heat generation due to mutual inductance between a stator and rotor and has a stator provided with drive windings for generating a rotating magnetic field to rotate the rotor and position control windings fitted to the stator for generating a magnetic field having a different number of poles than that of the drive windings for controlling the axial or radial position of the rotor when an electric current sufficient to unbalance the magnetic field applied to the rotor by the drive windings is supplied to the position control windings. The rotor has a cage conductors interconnected to form a plurality of closed circuits mounted to the rotor, the closed circuits having a number of poles set so that there is no mutual inductance between the position control windings and the cage conductors. The cage conductors are connected by circumferentially-divided end rings rigidly connected by a retaining ring or by axially divided end rings directly connected to the rotor shaft. In one embodiment, the cage conductors are arranged in four-pole closed circuits, the drive windings have four poles, and the position control windings have two poles. In an alternative embodiment, the cage conductors may be arranged in two-pole closed circuits, the drive windings have two poles and the position control windings have four poles.
    • 布置高速电磁旋转机器,以避免由于定子和转子之间的互感引起的热量产生,并且具有设置有用于产生旋转磁场的驱动绕组的定子,以使转子和装配到定子上的位置控制绕组产生 磁场具有与用于控制转子的轴向或径向位置的驱动绕组数不同的极数,当通过驱动绕组将足以不平衡施加到转子的磁场的电流提供给位置控制绕组时。 转子具有互连以形成安装到转子的多个闭合回路的保持架导体,闭合回路具有多个极点,使得位置控制绕组和保持架导体之间不存在互感。 笼式导体通过由保持环刚性连接的周向分隔的端环或直接连接到转子轴的轴向分开的端环连接。 在一个实施例中,保持架导体布置在四极闭合电路中,驱动绕组具有四个极,并且位置控制绕组具有两个极。 在替代实施例中,保持架导体可以布置在两极闭合电路中,驱动绕组具有两个极,并且位置控制绕组具有四个极。