公开(公告)号：US20190280633A1

公开(公告)日：2019-09-12

申请号：US15914460

申请日：2018-03-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Kibok Lee ,  Young Joo Lee ,  Brian Gallert

IPC: H02P23/00 ,  G05B15/02 ,  B60L15/20

Abstract: A method for reducing code execution time in motor controllers includes receiving a feedback signal from a motor component and transmitting a motor control signal to control the motor component based on first and second attributes of the motor component by iteratively alternating between two modes. In the first mode a first code execution segment is performed utilizing the feedback signal to determine a current value of a first attribute of the motor component, and a current value of a second attribute of the motor component is determined using a past value of the second attribute. In the second mode a second code execution segment is performed utilizing the feedback signal to determine a current value of the second attribute of the motor component, and a current value of the first attribute of the motor component is determined using a past value of the first attribute.

公开(公告)号：US20150069865A1

公开(公告)日：2015-03-12

申请号：US14023924

申请日：2013-09-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Timothy J. Alfermann ,  Brian Gallert

IPC: H02K9/19

CPC classification number: H02K9/19

Abstract: An electric motor includes a rotor and a stator. The stator is fixed with respect to the drive-unit housing and includes windings, and the rotor is configured to rotate inside the stator about an axis. An air gap is defined between the rotor and the stator. The electric motor also includes an end-ring fixed to the rotor for rotation therewith. The electric motor is cooled by gravity feed via a fluid flowing onto and past the stator windings, from the windings to the rotor, and from the rotor back to the stator. The end-ring includes an annular channel configured to catch the fluid flowing from the windings to the rotor and divert the fluid away from the air gap as the fluid flows from the rotor back to the stator, thereby limiting spin losses in the electric motor. An electro-mechanical drive-unit employing the above-described electric motor is also disclosed.

Abstract translation: 电动机包括转子和定子。 定子相对于驱动单元壳体固定并且包括绕组，并且转子构造成围绕定子围绕轴线旋转。 在转子和定子之间限定气隙。 电动机还包括固定到转子上的端环，用于与其一起旋转。 电动机通过重力进给通过流经和绕过定子绕组的流体从绕组到转子以及从转子回到定子来冷却。 端环包括环形通道，其构造成当流体从转子返回到定子时将从绕组流动的流体捕获到转子并将流体从空气间隙转移，从而限制电动机中的自旋损失。 还公开了采用上述电动机的机电驱动单元。

公开(公告)号：US09203285B2

公开(公告)日：2015-12-01

申请号：US14023924

申请日：2013-09-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Timothy J. Alfermann ,  Brian Gallert

IPC: H02K9/19

CPC classification number: H02K9/19

Abstract: An electric motor includes a rotor and a stator. The stator is fixed with respect to the drive-unit housing and includes windings, and the rotor is configured to rotate inside the stator about an axis. An air gap is defined between the rotor and the stator. The electric motor also includes an end-ring fixed to the rotor for rotation therewith. The electric motor is cooled by gravity feed via a fluid flowing onto and past the stator windings, from the windings to the rotor, and from the rotor back to the stator. The end-ring includes an annular channel configured to catch the fluid flowing from the windings to the rotor and divert the fluid away from the air gap as the fluid flows from the rotor back to the stator, thereby limiting spin losses in the electric motor. An electro-mechanical drive-unit employing the above-described electric motor is also disclosed.

Abstract translation: 电动机包括转子和定子。 定子相对于驱动单元壳体固定并且包括绕组，并且转子构造成围绕定子围绕轴线旋转。 在转子和定子之间限定气隙。 电动机还包括固定到转子上的端环，用于与其一起旋转。 电动机通过重力进给通过流经和绕过定子绕组的流体从绕组到转子以及从转子回到定子来冷却。 端环包括环形通道，其构造成当流体从转子返回到定子时将从绕组流动的流体捕获到转子并将流体从空气间隙转移，从而限制电动机中的自旋损失。 还公开了采用上述电动机的机电驱动单元。