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    Permanent magnet generator brakes with dual wedges
    1.
    发明授权
    Permanent magnet generator brakes with dual wedges 有权

    公开(公告)号：US12160156B2

    公开(公告)日：2024-12-03

    申请号：US18105416

    申请日：2023-02-03

    Applicant: Hamilton Sundstrand Corporation

    Inventor： Aaron Cooling ,  Andrew P. Grosskopf ,  Glenn C. Lemmers, Jr. ,  Andreas C. Koenig

    IPC: H02K7/102 ,  H02K7/18 ,  H02K11/21 ,  H02K11/33

    Abstract: A system includes a permanent magnet generator (PMG) with a generator shaft defining a longitudinal axis. A brake system includes a brake shaft with a first end operatively connected to the generator shaft for selectively rotating with the generator shaft or braking to slow the generator shaft. A shear shaft is operatively connected to a second end of the brake shaft axially opposite the first end along the longitudinal axis. The brake system includes a wedge with a first position radially withdrawn from the brake shaft, and a second position radially pressed against the brake shaft for applying braking forces to the brake shaft and to the generator shaft.

    COOLING OF HIGH-POWER PERMANENT MAGNET MACHINE ROTOR
    2.
    发明申请
    COOLING OF HIGH-POWER PERMANENT MAGNET MACHINE ROTOR 有权

    公开(公告)号：US20240396392A1

    公开(公告)日：2024-11-28

    申请号：US18323599

    申请日：2023-05-25

    Applicant: Hamilton Sundstrand Corporation

    Inventor： Debabrata Pal ,  Ashutosh Joshi ,  Andreas C. Koenig

    IPC: H02K1/32 ,  H02K1/278 ,  H02K1/28 ,  H02K9/19

    Abstract: A rotor of an electric machine includes a rotor core, a plurality of permanent magnets located at the rotor core, and a rotor sleeve enclosing the rotor core and the plurality of permanent magnets. One or more sleeve cooling channels are positioned between a radially outer surface of the rotor core and a radially inner surface of the rotor sleeve and extend axially along a length of the rotor. One or more radial cooling channels extend radially outwardly from an interior of the rotor core to the one or more sleeve cooling channels. The one or more radial cooling channels are configured to convey a flow of cooling fluid from the interior of the rotor core to the one or more sleeve cooling channels.

    ENGINE START SYSTEM WITH EXCITER
    3.
    发明公开
    ENGINE START SYSTEM WITH EXCITER 审中-公开

    公开(公告)号：US20240364245A1

    公开(公告)日：2024-10-31

    申请号：US18307492

    申请日：2023-04-26

    Applicant: Hamilton Sundstrand Corporation

    Inventor： Dhaval S. Patel ,  Andreas C. Koenig

    IPC: H02P1/18 ,  B64D27/24

    CPC classification number: H02P9/08 ,  H02K7/20

    Abstract: An electric engine start architecture is provided and includes a motor controller including an exciter inverter and a controller, which outputs a control signal to the exciter inverter, and a generator. The generator includes an exciter receptive of alternating current (AC) from the exciter inverter with the exciter inverter responsive to the control signal, a rotating rectifier receptive of AC from the exciter and configured to convert the AC from the exciter into direct current (DC) and a main machine exclusively drivable by AC fields in the exciter to execute an engine start operation.

    Motor parallel winding differential current protection
    8.
    发明授权
    Motor parallel winding differential current protection 有权

    公开(公告)号：US10778135B2

    公开(公告)日：2020-09-15

    申请号：US16176882

    申请日：2018-10-31

    Applicant: Hamilton Sundstrand Corporation

    Inventor： Andreas C. Koenig ,  Joseph Kenneth Coldwate ,  Michael J. Menke ,  Gary L. Miles

    IPC: G01R31/02 ,  H02H3/04 ,  H02H7/08 ,  H02P29/024 ,  H02P25/22

    Abstract: An electric motor control system, including an electric motor having a first winding set including first and second parallel windings, the first and second windings operable to each current based on the combined phase current, and a differential current sensor operably coupled to the first winding and the second winding. The differential current sensor measuring a differential current flowing through the first winding and the second winding and operable to transmit a signal indicative of the differential current based on the measuring. The system also includes a motor controller connected to the electric motor, the motor controller operable to direct the combined phase current through the phase lead, receive the differential current signal, determine if the differential current flowing through the winding set exceeds a selected threshold, and identify a health status of the motor winding set as degraded if the differential current exceeds the selected threshold.

    GENERATOR SYSTEMS
    9.
    发明申请
    GENERATOR SYSTEMS 审中-公开

    公开(公告)号：US20200220430A1

    公开(公告)日：2020-07-09

    申请号：US16242212

    申请日：2019-01-08

    Applicant: Hamilton Sundstrand Corporation

    Inventor： Aaron M. Finke ,  Andreas C. Koenig ,  Stephen Michael Bortoli

    IPC: H02K7/18 ,  F02C7/32

    Abstract: A system can include a first generator configured to operate in a first speed range to produce a predetermined output characteristic, a second generator configured to operate at a second speed range different from the first speed range to produce the predetermined output characteristic, and a controller configured to activate the first generator at and/or above a first low activation speed and at and/or below a first high activation speed within the first speed range. The controller can be configured to activate the second generator at and/or above a second low activation speed within the second speed range. The controller can be configured to deactivate the first generator at and/or above a first high deactivation speed. The controller can be configured to deactivate the second generator at and/or below a second low deactivation speed.

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