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    Induction motor speed estimation
    13.
    发明授权
    Induction motor speed estimation 有权
    感应电机速度估算

    公开(公告)号：US09431949B2

    公开(公告)日：2016-08-30

    申请号：US14264332

    申请日：2014-04-29

    Applicant: General Electric Company

    Inventor： Pinjia Zhang ,  Prabhakar Neti ,  Patel Bhageerath Reddy

    IPC: H02P23/00 ,  H02P25/00 ,  H02P27/00 ,  H02P23/08 ,  H02P23/14 ,  H02P27/02

    CPC classification number: H02P23/08 ,  H02P21/18 ,  H02P23/14 ,  H02P23/16 ,  H02P27/026 ,  H02P29/0241

    Abstract: A method for estimating a speed of an induction motor includes applying a voltage to the induction motor and measuring a current of the induction motor. A current fast fourier transform (FFT) of the current is then determined and a slip of the induction motor is calculated based on the current FFT. A speed of the induction motor is then estimated based on the slip of the induction motor.

    Abstract translation: 用于估计感应电动机的速度的方法包括向感应电动机施加电压并测量感应电动机的电流。 然后确定电流的当前快速傅立叶变换（FFT），并且基于当前FFT来计算感应电动机的滑差。 然后基于感应电动机的滑移来估计感应电动机的速度。

    Spoke permanent magnet machine with reduced torque ripple and method of manufacturing thereof
    14.
    发明授权
    Spoke permanent magnet machine with reduced torque ripple and method of manufacturing thereof 有权
    具有减小的转矩波动的轮辐永磁机及其制造方法

    公开(公告)号：US09287742B2

    公开(公告)日：2016-03-15

    申请号：US13958693

    申请日：2013-08-05

    Applicant: General Electric Company

    Inventor： Patel Bhageerath Reddy ,  Ayman Mohamed Fawzi EL-Refaie ,  Kum-Kang Huh ,  James Pellegrino Alexander

    IPC: H02K21/12 ,  H02K1/27 ,  H02K15/03 ,  H02K21/16 ,  H02K29/03

    CPC classification number: H02K1/272 ,  H02K1/30 ,  H02K15/03 ,  H02K21/16 ,  H02K29/03 ,  H02K2201/06 ,  Y10T29/49012

    Abstract: An internal permanent magnet machine includes a rotor assembly having a shaft comprising a plurality of protrusions extending radially outward from a main shaft body and being formed circumferentially about the main shaft body and along an axial length of the main shaft body. A plurality of stacks of laminations are arranged circumferentially about the shaft to receive the plurality of protrusions therein, with each stack of laminations including a plurality of lamination groups arranged axially along a length of the shaft and with permanent magnets being disposed between the stacks of laminations. Each of the laminations includes a shaft protrusion cut formed therein to receive a respective shaft protrusion and, for each of the stacks of laminations, the shaft protrusion cuts formed in the laminations of a respective lamination group are angularly offset from the shaft protrusion cuts formed in the laminations in an adjacent lamination group.

    Abstract translation: 一种内置永久磁铁机，其特征在于，具有转子组件，该转子组件具有从主轴体径向向外延伸的多个突起，并且沿着主轴主体的轴向长度形成在周向上。 多个叠片堆叠围绕轴周向地布置以容纳其中的多个突起，每个叠片堆叠包括沿轴的长度轴向布置的多个层压组，并且永磁体设置在叠片叠层之间 。 每个叠片包括形成在其中的轴突起切口，以接收相应的轴突起，并且对于每个叠片叠层，形成在相应层叠组的叠片中的轴突起切口与形成在其中的轴突起切口成角度地偏移 相邻层压组中的叠片。

    MAGNET MANAGEMENT IN ELECTRIC MACHINES
    15.
    发明申请
    MAGNET MANAGEMENT IN ELECTRIC MACHINES 有权
    电机磁铁管理

    公开(公告)号：US20160065112A1

    公开(公告)日：2016-03-03

    申请号：US14473216

    申请日：2014-08-29

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Patel Bhageerath Reddy ,  Ayman Mohamed Fawzi El-Refaie ,  Kum Kang Huh

    IPC: H02P29/00

    CPC classification number: H02P29/62 ,  H02P29/662 ,  H02P2207/05

    Abstract: A magnet management method of controlling a ferrite-type permanent magnet electrical machine includes receiving and/or estimating the temperature permanent magnets; determining if that temperature is below a predetermined temperature; and if so, then: selectively heating the magnets in order to prevent demagnetization and/or derating the machine. A similar method provides for controlling magnetization level by analyzing flux or magnetization level. Controllers that employ various methods are disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.

    Abstract translation: 铁氧体永磁电机的磁控管理方法包括接收和/或估计温度永磁体; 确定该温度是否低于预定温度; 如果是这样，则：选择性地加热磁铁，以防止机器的退磁和/或降额。 类似的方法通过分析通量或磁化水平来提供控制磁化水平。 公开了采用各种方法的控制器。 已经根据具体实施例描述了本发明，并且认识到除了明确说明的那些之外的等同物，替代方案和修改是可能的并且在所附权利要求的范围内。

    MODULAR PERMANENT MAGNET MOTOR AND PUMP ASSEMBLY
    16.
    发明申请
    MODULAR PERMANENT MAGNET MOTOR AND PUMP ASSEMBLY 有权
    模块式永磁电机和泵组件

    公开(公告)号：US20150123506A1

    公开(公告)日：2015-05-07

    申请号：US14070795

    申请日：2013-11-04

    Applicant: General Electric Company

    Inventor： Ken Ivcar Salas Nobrega ,  Jeremy Daniel Van Dam ,  Manoj Ramprasad Shah ,  William Dwight Gerstler ,  Tsarafidy Raminosoa ,  Edward John Flett ,  Patel Bhageerath Reddy ,  James Pellegrino Alexander

    IPC: H02K1/27 ,  H02K16/02 ,  H02K5/132

    CPC classification number: H02K1/274 ,  H02K1/276 ,  H02K1/278 ,  H02K5/132 ,  H02K16/02 ,  Y02E20/16

    Abstract: A permanent magnet machine, a rotor assembly for the machine, and a pump assembly. The permanent magnet machine includes a stator assembly including a stator core configured to generate a magnetic field and extending along a longitudinal axis with an inner surface defining a cavity and a rotor assembly including a rotor core and a rotor shaft. The rotor core is disposed inside the cavity and configured to rotate about the longitudinal axis. The rotor assembly further including a plurality of permanent magnets for generating a magnetic field which interacts with the stator magnetic field to produce torque. The permanent magnets configured as one of internal or surface mounted. The rotor assembly also including a plurality of retaining clips configured to retain the plurality of permanent magnets relative to the rotor core. The pump assembly including an electric submersible pump and a permanent magnet motor for driving the pump.

    Abstract translation: 永磁机，用于机器的转子组件和泵组件。 永磁体机器包括定子组件，该定子组件包括定子铁心，该定子铁心构造成产生磁场并且沿纵向轴线延伸，内表面限定空腔，转子组件包括转子芯和转子轴。 转子芯设置在空腔内并且构造成围绕纵向轴线旋转。 转子组件还包括多个永磁体，用于产生与定子磁场相互作用以产生转矩的磁场。 永久磁铁被配置为内部或表面安装的一个。 转子组件还包括多个保持夹，其构造成相对于转子芯保持多个永磁体。 泵组件包括用于驱动泵的电潜泵和永磁电动机。

    Short circuit fault tolerant permanent magnet machine
    18.
    发明授权
    Short circuit fault tolerant permanent magnet machine 有权

    公开(公告)号：US09979248B2

    公开(公告)日：2018-05-22

    申请号：US14754138

    申请日：2015-06-29

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Steven Joseph Galioto ,  Manoj Ramprasad Shah ,  Patel Bhageerath Reddy ,  Nathaniel Benedict Hawes

    IPC: H02K3/28 ,  H02K3/12 ,  H02K1/16 ,  H02K1/27 ,  H02K21/14

    CPC classification number: H02K3/28 ,  H02K1/16 ,  H02K1/274 ,  H02K3/12 ,  H02K3/493 ,  H02K21/14 ,  H02K2213/03

    Abstract: A permanent magnet (PM) machine includes a rotor and a stator assembly. The rotor includes a plurality of permanent magnets disposed about an axis of rotation. The stator assembly includes a stator body, a plurality of coil sides and a plurality of sintered iron magnetic wedges. The stator body includes a plurality of stator teeth defining a plurality of stator slots, each stator slot having an inside position and an outside position, such that each of the plurality of stator slots includes a first plurality of inside positions, and a first plurality of outside positions. The first plurality of coil sides are disposed in each of the first plurality of inside positions and the first plurality of outside positions. The first plurality of coil sides correspond to a first power phase. The first plurality of coil sides are electrically coupled to one another by a first plurality of end-coils. The plurality of sintered iron magnetic wedges are disposed at the openings of at least one stator slot of the plurality of stator slots.

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