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    • 3. 发明授权
    • Electromagnectic rotating machine
    • 电磁旋转机
    • US5936370A
    • 1999-08-10
    • US635031
    • 1996-04-19
    • Tadashi FukaoAkira ChibaChikara Michioka
    • Tadashi FukaoAkira ChibaChikara Michioka
    • F16C32/04F16C39/06H02K7/09H02P27/06G05B1/06
    • F16C32/0448F16C32/0493H02K7/09
    • An electromagnetic rotating machine driven by an electromagnetic action between a stator and a rotor has drive windings fitted to the stator for generating a rotating magnetic field for rotatably driving the rotor, position control windings fitted to the stator for generating a magnetic field having a different number of poles than that of the drive windings, a magnetic force generation circuit for generating a magnetic force to act on the rotor by supplying the position control windings with an electric current effective to unbalance the magnetic field on the stator side, a circuit for detecting an induced voltage or current generated in the one or more position control windings in response to radial displacement of the rotor and the rotating magnetic field generated by the drive windings, a circuit for detecting radial displacement of the rotor based on the induced voltage or current and the magnitude and speed of the rotating magnetic field, and a position control circuit for controlling the radial position of the rotor by changing the magnetic force generated by the magnetic force generation circuit in accordance with the detected radial displacement of the rotor.
    • 由定子和转子之间的电磁作用驱动的电磁旋转机具有安装在定子上的驱动绕组,用于产生用于可旋转地驱动转子的旋转磁场,安装在定子上的位置控制绕组产生具有不同数量的磁场 的磁极产生电路,用于通过向位置控制绕组提供有效地使定子侧上的磁场不平衡的电流来产生作用在转子上的磁力的磁力产生电路,用于检测电动机的电路 响应于转子的径向位移和由驱动绕组产生的旋转磁场而在一个或多个位置控制绕组中产生的感应电压或电流,用于基于感应电压或电流检测转子的径向位移的电路,以及 旋转磁场的大小和速度,以及用于控制的位置控制电路 通过根据检测到的转子的径向位移改变由磁力产生电路产生的磁力,使转子的径向位置变窄。
    • 5. 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。
    • 6. 发明申请
    • BEARINGLESS MOTOR
    • 无轴承电机
    • US20100231076A1
    • 2010-09-16
    • US12733981
    • 2009-01-19
    • Akira ChibaMasatsugu TakemotoTadashi Fukao
    • Akira ChibaMasatsugu TakemotoTadashi Fukao
    • H02K7/09
    • F16C32/0459F16C32/0493F16C2360/44H02K7/09
    • Provided is a bearingless motor capable of stably performing magnetic levitation and rotation even when a thrust disk is not provided and gap length is wide.A unit 101 of a first bearingless motor is formed of a stator 41 and a core 61, while a unit 103 of a second bearingless motor is formed of a stator 43 and a core 63. A thrust magnetic bearing unit 102 formed of a core 62 and a stator 42 while having the functions of a thrust magnetic bearing is newly arranged between the unit 101 and the unit 103. A stator-side annular thrust permanent magnet 73 and a rotor-side annular thrust permanent magnet 81 are arranged between the unit 101 and the unit 103, while a stator-side annular thrust permanent magnet 75 and a rotor-side annular thrust permanent magnet 83 are arranged between the unit 102 and the unit 103.
    • 提供一种无轴承电动机,即使在不设置止推盘和间隙长度的情况下也能够稳定地进行磁悬浮和旋转。 第一无轴承马达的单元101由定子41和芯61形成,而第二无轴承马达的单元103由定子43和芯63形成。由芯62形成的推力磁轴承单元102 并且在单元101和单元103之间新设有具有推力磁轴承功能的定子42.定子侧环形推力永磁体73和转子侧环形推力永磁体81设置在单元101 单元103,同时定子侧环形推力永磁体75和转子侧环形推力永磁体83布置在单元102和单元103之间。