公开(公告)号：US20220255452A1

公开(公告)日：2022-08-11

申请号：US17173070

申请日：2021-02-10

Applicant: Hamilton Sundstrand Corporation

Inventor： Dwight D. Schmitt ,  Mustansir Kheraluwala ,  Eric A. Carter

IPC: H02M5/458 ,  H02M1/08

Abstract: A system comprises a first 3-phase rectifier having a positive DC lead and a negative DC lead and a second 3-phase rectifier having a positive DC lead and a negative DC lead. The system also includes a 4-phase, 3-level inverter connected to the first and second 3-phase rectifiers. A method comprises receiving variable frequency, 3-phase power from a first generator, receiving variable frequency, 3-phase power from a second generator, rectifying the variable frequency, 3-phase power from each of the first and second generators into DC power. And inverting the DC power into 4-phase, constant frequency power for powering a load.

公开(公告)号：US20220172872A1

公开(公告)日：2022-06-02

申请号：US17106713

申请日：2020-11-30

Applicant: Hamilton Sundstrand Corporation

Inventor： Ashutosh Joshi ,  Eric A. Carter ,  Debabrata Pal

IPC: H01F27/02 ,  H01F27/08 ,  H02K1/20 ,  H02K1/32

Abstract: A transformer includes a housing having a base wall, a first side wall, a second side opposing wall, a third side wall joining the first side wall and the second side wall at a first end including a first cooling channel joining the first side wall and the second side wall at a first end, and a fourth side wall including joining the first side wall and the second side wall at a second end. The first, second, third, and fourth side walls collectively define an interior portion. A cover extends across each of the first side wall the second side wall, the third side wall, and the fourth side wall. A cooling system includes a first cooling channel disposed in the third side wall, a second cooling channel disposed in the fourth side wall, and a third cooling channel disposed in the cover.

公开(公告)号：US20180234071A1

公开(公告)日：2018-08-16

申请号：US15432132

申请日：2017-02-14

Applicant: Hamilton Sundstrand Corporation

Inventor： Huazhen Chai ,  Eric A. Carter ,  John Huss

IPC: H03H1/00 ,  H03H7/06 ,  H03H3/00 ,  H01F27/24 ,  H01F27/28

CPC classification number: H03H7/06 ,  H01F17/062 ,  H01F27/24 ,  H01F27/2823 ,  H01F2017/0093 ,  H01F2017/065 ,  H02J3/01 ,  H03H1/00 ,  H03H3/00 ,  H03H2001/0035

Abstract: According to an aspect, an inductor damper circuit includes a shared magnetic core, a primary winding, and a secondary winding. The primary winding includes an inductor winding of a first wire gauge wound about the shared magnetic core. The secondary winding includes a resistive damper winding of a second wire gauge that is less than the first wire gauge and wound about the shared magnetic core in contactless magnetic coupling with the primary winding.