公开(公告)号：US11342875B2

公开(公告)日：2022-05-24

申请号：US15484814

申请日：2017-04-11

Applicant: Hamilton Sundstrand Corporation

Inventor： Andreas C. Koenig ,  Joseph Kenneth Coldwate

IPC: H02P27/06 ,  H02K11/26 ,  H02P9/14 ,  B64D13/02 ,  B64D27/18 ,  H02P25/16 ,  H02P29/024

Abstract: An electrical machine includes a with a parallel first and second phase windings. A first neutral bus is connected to the first phase winding and a second neutral bus is connected to the second phase winding. A first voltage sensor is coupled to the first neutral bus and a second voltage sensor coupled to the second phase winding for monitoring current imbalance between the first and second phase windings.

公开(公告)号：US20210066978A1

公开(公告)日：2021-03-04

申请号：US16559248

申请日：2019-09-03

Applicant: HAMILTON SUNDSTRAND CORPORATION

Inventor： Joseph Kenneth Coldwate ,  Wilfredo E. Colon Velazquez

IPC: H02K1/20 ,  H02K1/16

Abstract: A stator core is provided and includes laminations disposed in a laminated arrangement to form a stator core body having an axial length extending in a lamination dimension. The stator core body includes an annular portion extending along the axial length and teeth extending radially from the annular portion and along the axial length. Each tooth has a trapezoidal shape and is formed to define one or more triangular holes running along the axial length.

公开(公告)号：US10855131B2

公开(公告)日：2020-12-01

申请号：US16362018

申请日：2019-03-22

Applicant: Hamilton Sundstrand Corporation

Inventor： Joseph Kenneth Coldwate ,  Andreas C. Koenig

IPC: H02K3/46 ,  H02K3/32 ,  H02K3/18 ,  H02K11/25 ,  H02K1/14 ,  H02K15/10

Abstract: An assembly for an electric machine including a core with a plurality of teeth extending radially inward from the core, the plurality of teeth defining a plurality of slots for receiving coils, a plurality of coils, each coil wrapping around a respective tooth, a separator in one of the slots including a first leg joined at an angle to a second leg for separating adjacent coils within the slot, an insert between the first leg and the second leg for at least partially filling a space between the first leg and the second leg, and a potting filling space within the slot between the separator, the plurality of coils, and the insert.

公开(公告)号：US20200313472A1

公开(公告)日：2020-10-01

申请号：US16363601

申请日：2019-03-25

Applicant: Hamilton Sundstrand Corporation

Inventor： Joseph Kenneth Coldwate ,  Andreas C. Koenig

IPC: H02K1/14 ,  H02K3/18 ,  H02K3/46 ,  H02K15/06

Abstract: A core for an electric machine includes a core body arranged along a rotation axis and a winding. The core body has two or more teeth including a first tooth and a second tooth that are circumferentially spaced from one another about the rotation axis. The winding is to the core body and includes two or more coils connected electrically in series with one another. A first of the coils is seated circumferentially about both the first tooth and the second tooth to define a distributed pole circumferentially spanning both the first tooth and the second tooth. Electric machines and methods of making cores for electric machines are also described.

公开(公告)号：US10110156B2

公开(公告)日：2018-10-23

申请号：US15011711

申请日：2016-02-01

Applicant: HAMILTON SUNDSTRAND CORPORATION

Inventor： Andreas C. Koenig ,  John M. Beck ,  Joseph Kenneth Coldwate

IPC: F04D27/00 ,  H02P29/024 ,  H02K1/27 ,  F04D15/00 ,  F04D15/02

Abstract: A system has an electric motor having a stator and a rotor. The rotor rotates with a shaft and the shaft drives a fluid rotor. A control senses a fault condition on the electric motor. The control actuates a speed reduction feature when a fault is detected to bring rotation of the motor rotor and the fluid rotor to a stop more rapidly than if the speed reduction feature had not been actuated.

公开(公告)号：US11539322B1

公开(公告)日：2022-12-27

申请号：US17347721

申请日：2021-06-15

Applicant: Hamilton Sundstrand Corporation

Inventor： Joseph Kenneth Coldwate ,  Andreas C. Koenig

IPC: H02P29/028 ,  H02P27/04

Abstract: An electric motor system implements a redundant wye-wounded motor that includes first phase leads, second phase leads, first neutral leads, and second neutral leads. The first and second phase leads receive alternating current (AC) power from a power supply. A first phase-lead switch selectively connects the first phase leads to the power supply, and a second phase-lead switch selectively connects the second phase leads to the power supply. A first neutral-lead switch selectively connects the first neutral leads to the redundant wye-wounded motor, and a second neutral-lead switch selectively connects the second neutral leads to the redundant wye-wounded motor. A controller detects a circuit fault among a plurality of different types of circuit faults, and controls the operation of one or both of the primary neutral-lead switch and the second neutral-lead switch based on the circuit fault.

公开(公告)号：US20220399848A1

公开(公告)日：2022-12-15

申请号：US17347721

申请日：2021-06-15

Applicant: Hamilton Sundstrand Corporation

Inventor： Joseph Kenneth Coldwate ,  Andreas C. Koenig

IPC: H02P29/028 ,  H02P27/04

Abstract: An electric motor system implements a redundant wye-wounded motor that includes first phase leads, second phase leads, first neutral leads, and second neutral leads. The first and second phase leads receive alternating current (AC) power from a power supply. A first phase-lead switch selectively connects the first phase leads to the power supply, and a second phase-lead switch selectively connects the second phase leads to the power supply. A first neutral-lead switch selectively connects the first neutral leads to the redundant wye-wounded motor, and a second neutral-lead switch selectively connects the second neutral leads to the redundant wye-wounded motor. A controller detects a circuit fault among a plurality of different types of circuit faults, and controls the operation of one or both of the primary neutral-lead switch and the second neutral-lead switch based on the circuit fault.

公开(公告)号：US20220376566A1

公开(公告)日：2022-11-24

申请号：US17328945

申请日：2021-05-24

Applicant: Hamilton Sundstrand Corporation

Inventor： Debabrata Pal ,  Joseph Kenneth Coldwate

IPC: H02K1/20 ,  H02K5/18 ,  H02K9/20 ,  H02K21/14

Abstract: A system comprises a stator core defining a plurality of winding slots between circumferentially spaced apart teeth. A respective cooling channel is defined within each of the circumferentially spaced apart teeth for circulation of coolant fluid through the stator core. The stator core is a laminated structure, where the teeth, winding slots, and cooling channels are part of a common laminated structure with the stator core.

公开(公告)号：US11218058B2

公开(公告)日：2022-01-04

申请号：US16176323

申请日：2018-10-31

Applicant: Hamilton Sundstrand Corporation

Inventor： Joseph Kenneth Coldwate ,  Tadashi Sawata

IPC: H02K9/22 ,  H02K1/14 ,  H02K15/02

Abstract: An electric machine includes a winding yoke defining a plurality of winding slots between circumferentially spaced apart teeth. A respective winding separator is mounted within each of the winding slots. The winding separator is mounted to a keying feature that extends from the winding yoke into the winding slot. The winding yoke can be a laminated structure, wherein the teeth and keying features are part of a common laminated structure with the winding yoke. The winding yoke can be a stator, and a rotor can be mounted within the stator for rotary movement relative to the stator.

公开(公告)号：US11108292B2

公开(公告)日：2021-08-31

申请号：US16176996

申请日：2018-10-31

Applicant: Hamilton Sundstrand Corporation

Inventor： Andreas C. Koenig ,  Joseph Kenneth Coldwate

IPC: H02K3/28 ,  H02P25/18 ,  H02P25/22

Abstract: An electric motor control system including an electric motor having a winding with a first and second end, a motor controller having a phase lead, the motor controller operable to direct a phase current to the phase lead. The electric motor control system also includes a first switching device that provides an electrical connection between the phase lead and the first end of the first winding when in a disabled state, and thereby flowing the phase current from the phase lead to the first end of the first winding, and a second switching device operably connected to the motor controller and providing an electrical connection between the second end of the first winding and a common point, when in an enabled state. The motor controller is operable to change the state of the first switching device to enabled, and the second switching device to disabled, under selected conditions.