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    STARTER INCLUDING A SWITCHED RELUCTANCE ELECTRIC MOTOR
    2.
    发明申请
    STARTER INCLUDING A SWITCHED RELUCTANCE ELECTRIC MOTOR 审中-公开

    公开(公告)号：US20190326842A1

    公开(公告)日：2019-10-24

    申请号：US15961119

    申请日：2018-04-24

    Applicant: GM Global Technology Operations LLC

    Inventor： Avoki M. Omekanda ,  Lei Hao ,  Chandra S. Namuduri ,  Suresh Gopalakrishnan ,  Thomas W. Nehl

    IPC: H02P25/092 ,  F02N11/08

    Abstract: A starter includes a three-phase switched reluctance electric motor including a rotor and a stator, a pinion gear, a power inverter that is connected to the stator, and a rotational position sensor. The rotor includes a quantity of rotor poles that is between 6 and 16, and the stator includes a quantity of stator poles that is between 8 and 24. An outer diameter of the electric motor is less than 85 mm. An active length of the motor is less than 50 mm. An airgap distance between the rotor and the stator is between 0.1 mm and 0.5 mm. A ratio between a rotor pole arc and a stator pole arc is at least 1.0:1. A ratio between a stator diameter and a rotor diameter is at least 2.0:1, and a ratio between a stator pole height and a rotor pole height is at least 2.5:1.

    OPTIMUM ROTOR SKEW ANGLE FOR AN ELECTRIC MACHINE
    3.
    发明申请
    OPTIMUM ROTOR SKEW ANGLE FOR AN ELECTRIC MACHINE 审中-公开
    电动机的最佳转子轴角

    公开(公告)号：US20140246943A1

    公开(公告)日：2014-09-04

    申请号：US13782320

    申请日：2013-03-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Avoki M. Omekanda ,  John C. Morgante

    IPC: H02K17/16 ,  B60L1/00

    CPC classification number: B60L1/00 ,  H02K17/205

    Abstract: An electric machine includes a stator core defining a number of stator slots (S) extending along a longitudinal axis and angularly spaced about the longitudinal axis. The machine includes a rotor assembly rotatable relative to the stator core and defining first and second ends. The rotor assembly includes a plurality of laminations stacked between the first and second ends. Each respective one of the plurality of laminations defines a number of rotor slots (R) positioned along an outer periphery. A stator slot pitch is defined as 360 divided by the number of stator slots (S). A rotor slot pitch is defined as 360 divided by the number of rotor slots (R) in each respective one of the plurality of laminations. The laminations are skewed relative to each other. An optimal rotor skew angle is determined by the greater of the stator slot pitch and rotor slot pitch.

    Abstract translation: 电机包括限定沿着纵向轴线延伸并且围绕纵向轴线成角度间隔的多个定子槽（S）的定子芯。 该机器包括可相对于定子铁心旋转并限定第一和第二端的转子组件。 转子组件包括堆叠在第一和第二端之间的多个叠片。 多个叠片中的每个相应的一个限定了沿着外周定位的多个转子槽（R）。 定子槽间距定义为360除以定子槽数（S）。 转子槽间距被定义为360除以多个叠片中的每个相应的一个中的转子槽（R）的数量。 叠片相对于彼此倾斜。 最佳转子斜角由定子槽间距和转子槽间距的较大者确定。

    Electric motor having asymmetric configuration for generating unbalanced force
    5.
    发明授权
    Electric motor having asymmetric configuration for generating unbalanced force 有权

    公开(公告)号：US10476348B2

    公开(公告)日：2019-11-12

    申请号：US15845353

    申请日：2017-12-18

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Nilesh D. Mankame ,  Alireza Fatemi ,  Avoki M. Omekanda ,  Thomas W. Nehl ,  Lei Hao

    IPC: H02K1/17 ,  H02K7/06 ,  H02K1/27 ,  H02K1/26

    Abstract: An electric motor includes a rotor having a stack of laminations positioned axially relative to one another. The stack of laminations includes a first rotor lamination that is divided into a first portion and a second portion. The first rotor lamination is configured to have an asymmetric mass distribution such that the first portion has a first mass and the second portion has a second mass, with the first mass being different from the second mass. The electric motor is configured to selectively generate an unbalanced force during operation (i.e., when the rotor is spinning). The electric motor may include a stator configured to have an asymmetric magnetic field distribution. The electric motor may be employed in a haptic assembly and eliminates the need for a separate eccentric mass to generate a haptic signal.

    OPTIMUM ROTOR SKEW ANGLE FOR AN ELECTRIC MACHINE
    8.
    发明申请
    OPTIMUM ROTOR SKEW ANGLE FOR AN ELECTRIC MACHINE 审中-公开
    电动机的最佳转子轴角

    公开(公告)号：US20160308427A1

    公开(公告)日：2016-10-20

    申请号：US15191652

    申请日：2016-06-24

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Avoki M. Omekanda

    IPC: H02K17/16

    CPC classification number: H02K17/205 ,  B60L50/51 ,  B60L2220/12 ,  B60L2220/50 ,  B60L2240/423 ,  B60L2270/145 ,  H02K2201/06 ,  Y02T10/641 ,  Y02T10/642 ,  Y02T10/7005

    Abstract: An electric machine assembly includes a stator core, a rotor assembly and a controller. The stator core defines a number of stator slots extending along a longitudinal axis and angularly spaced about the longitudinal axis. The rotor assembly is rotatable relative to the stator core and includes a plurality of laminations stacked between first and second ends of the rotor assembly. The laminations are skewed relative to each other. Each respective one of the plurality of laminations defines a number of rotor slots positioned along an outer periphery. The controller includes a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of obtaining an optimal rotor skew angle. The optimum rotor skew angle is selected from a set (SK) of skew angles between first and second skew angles (SK1≦SK≦SK2).

    Abstract translation: 电机组件包括定子芯，转子组件和控制器。 定子芯限定了沿着纵向轴线延伸并且围绕纵向轴线成角度地间隔开的多个定子槽。 转子组件可相对于定子铁心旋转并且包括堆叠在转子组件的第一和第二端之间的多个叠片。 叠片相对于彼此倾斜。 多个叠片中的每个相应的一个限定了沿着外周定位的多个转子槽。 控制器包括处理器和有形的非暂时性存储器，其上记录有用于执行获得最佳转子斜角的方法的指令。 从第一和第二偏斜角（SK1≤SK≤SK2）之间的倾斜角度的集合（SK）中选择最佳的转子偏斜角。

    Alternating current drive for actuators
    10.
    发明授权
    Alternating current drive for actuators 有权

    公开(公告)号：US10190526B2

    公开(公告)日：2019-01-29

    申请号：US15127014

    申请日：2015-03-19

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Thomas W. Nehl ,  Suresh Gopalakrishnan ,  Avoki M. Omekanda ,  Chandra S. Namuduri

    IPC: F02D41/40 ,  F02D41/20 ,  H03K17/64 ,  F02M51/06 ,  F02M57/00 ,  F16K31/06 ,  H02P25/06 ,  H01F7/16 ,  H01F7/18

    Abstract: A method for providing consistent actuator events for each of a plurality of consecutive actuator events of an electromagnetic actuator, includes applying a first bi-directional current waveform for a first actuator event and applying a second bi-directional current waveform for a second actuator event immediately subsequent to the first actuator event. The first bi-directional current waveform includes applying current in a first direction when the actuator is commanded to an actuated position and applying current in a reversed second direction when the actuator is commanded to a rest position. The second bi-directional current waveform includes applying current in the reversed second direction when the actuator is commanded to an actuated position and applying current in the first direction when the actuator is commanded to a rest position.

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