公开(公告)号：US11885850B2

公开(公告)日：2024-01-30

申请号：US17521728

申请日：2021-11-08

Applicant: Hamilton Sundstrand Corporation

Inventor： Jordan K. Vanevenhoven ,  Mykola Kravchenko ,  John F. Defenbaugh

IPC: G01R31/327 ,  G01R19/165 ,  G01R31/00 ,  G01R31/34 ,  H02K21/02 ,  H02K21/14 ,  H02P9/30

CPC classification number: G01R31/343 ,  H02K21/02 ,  H02K21/14 ,  H02P9/305

Abstract: In accordance with at least one aspect of this disclosure, a method can include measuring a voltage across a DC link of a generator system when a generator exciter is inactive and a generator permanent magnet is active, and detecting a short or open permanent magnet generator (SOPMG) fault condition in the generator system with a DC link monitor operatively connected to measure the voltage across the DC link.

公开(公告)号：US20210320491A1

公开(公告)日：2021-10-14

申请号：US17221481

申请日：2021-04-02

Applicant: Hamilton Sundstrand Corporation

Inventor： Joshua Berg ,  Jef William Good ,  John F. Defenbaugh

IPC: H02H7/06 ,  H02H1/00

Abstract: A method includes detecting an initial fault in a system and opening a contactor to isolate a load bus from the system for a window of time. During the window of time, the method includes detecting whether current flows from a generator of the system. If current flows from the generator of the system during the window of time, the method includes isolating the load bus from the generator. If current does not flow from the generator to the system during the window of time, the method includes isolating the load bus from all sources including the generator.

公开(公告)号：US20240388084A1

公开(公告)日：2024-11-21

申请号：US18318222

申请日：2023-05-16

Applicant: Hamilton Sundstrand Corporation

Inventor： Christopher Hopkins ,  John F. Defenbaugh ,  Michael C. Harke

IPC: H02J1/10 ,  G05F1/573 ,  H02H9/02

Abstract: A power supply system includes first and second generators that are measured by first and second current sensors. The system also includes a first generator controller configured to: receive a first current signal from the first current sensing device and a second current signal from the second current sensing device; analyze the first current signal and the second current signal to determine a first voltage foldback value based on a first common mode current calculated from the first current signal and the second current signal; and operate the first DC power supply to reduce a first voltage output of the first DC power supply by the first voltage foldback value.

公开(公告)号：US11671038B2

公开(公告)日：2023-06-06

申请号：US16537099

申请日：2019-08-09

Applicant: Hamilton Sundstrand Corporation

Inventor： Michael C. Harke ,  John F. Defenbaugh

IPC: H02P9/00 ,  H02P9/10 ,  H02P9/36

CPC classification number: H02P9/00 ,  H02P9/102 ,  H02P9/36

Abstract: A method and controller for controlling a Wound Field Synchronous Machine (WFSM) of an electric power generation system (EPGS) having a field winding and a stator armature winding is provided. The controller includes an adjustable component coupled to the generator and a power factor controller for adjusting the adjustable component to lower the power factor of the WFSM as a function of power output to a load of the EPGS to stabilize a current in the field winding.

公开(公告)号：US20220371744A1

公开(公告)日：2022-11-24

申请号：US17328051

申请日：2021-05-24

Applicant: Hamilton Sundstrand Corporation

Inventor： Michael C. Harke ,  John F. Defenbaugh ,  William S. Heglund

IPC: B64D41/00 ,  H02J1/12

Abstract: System and methods for passive power sharing of parallel sources are provided. Aspects include a first DC power supply including a first generator and a rectifier circuit, a second DC power supply including a second generator and a second rectifier, wherein a first output of the first DC power supply and a second output of the second DC power supply are commonly coupled at a common bus point, a first current sensing device coupled between the first output of the first DC power supply and the common bus point, a first generator controller configured to receive a first current signal from the first current sensing device, analyze the first current signal to determine a first voltage droop value based on the first current signal, and operate the first DC power supply to reduce a first voltage output of the first DC power supply by the first voltage droop value.

公开(公告)号：US20190052204A1

公开(公告)日：2019-02-14

申请号：US15675090

申请日：2017-08-11

Applicant: HAMILTON SUNDSTRAND CORPORATION

Inventor： Brian R. Golden ,  Adrian E. Vandergrift ,  John F. Defenbaugh

IPC: H02P9/00 ,  H02P9/30

Abstract: An assembly according to an embodiment of the present disclosure includes, among other things, a synchronous machine including a rotating portion and a stationary portion, the rotating portion including at least one rotating diode coupled to a field winding, and the stationary portion including a stator winding and an exciter winding. A control unit includes a first gate and a second gate. The exciter winding is connected in series to the first gate and the second gate during a first operating mode to energize the exciter winding. The exciter winding is electrically connected in series to a first gate but is electrically disconnected from the second gate in a second, different operating mode to electrically disconnect the exciter winding from an exciter energy source. A method of operating a synchronous machine is also disclosed.

公开(公告)号：US20230144976A1

公开(公告)日：2023-05-11

申请号：US17521411

申请日：2021-11-08

Applicant: Hamilton Sundstrand Corporation

Inventor： Tom A. Utecht ,  John F. Defenbaugh ,  Robert L. Seagren

IPC: H02H7/125 ,  H02H1/00 ,  H02M1/32 ,  H02J3/36 ,  B64D41/00

CPC classification number: H02H7/125 ,  B64D41/00 ,  H02H1/0007 ,  H02J3/36 ,  H02M1/32

Abstract: A high voltage DC (HVDC) system can include a generator configured to output alternating current (AC), a rectifier connected to the generator via AC phase lines, the rectifier configured to convert the AC to DC to output the DC to DC feeder lines, and a crowbar system. The crowbar system can include a switch module operatively connected to the AC phase lines to prevent AC from flowing to the rectifier in a cutoff state. The crowbar system can be configured to determine whether at least one cutoff condition exists. The at least one cutoff condition can be or include one or more of a DC overcurrent downstream of the rectifier, a DC overvoltage downstream of the rectifier, an AC overcurrent from the generator, or an arc fault. The crowbar system can be configured to control the switch module to the cutoff state if the at least one cutoff condition exists.

公开(公告)号：US20230142245A1

公开(公告)日：2023-05-11

申请号：US17521728

申请日：2021-11-08

Applicant: Hamilton Sundstrand Corporation

Inventor： Jordan K. Vanevenhoven ,  Mykola Kravchenko ,  John F. Defenbaugh

IPC: G01R31/34 ,  H02P9/30 ,  H02K21/02 ,  H02K21/14

CPC classification number: G01R31/343 ,  H02P9/305 ,  H02K21/02 ,  H02K21/14

Abstract: In accordance with at least one aspect of this disclosure, a method can include measuring a voltage across a DC link of a generator system when a generator exciter is inactive and a generator permanent magnet is active, and detecting a short or open permanent magnet generator (SOPMG) fault condition in the generator system with a DC link monitor operatively connected to measure the voltage across the DC link.

公开(公告)号：US11482955B2

公开(公告)日：2022-10-25

申请号：US16566062

申请日：2019-09-10

Applicant: Hamilton Sundstrand Corporation

Inventor： Brian R. Golden ,  Adrian E. Vandergrift ,  John F. Defenbaugh

IPC: H02P9/00 ,  H02P9/30

Abstract: An assembly according to an embodiment of the present disclosure includes, among other things, a synchronous machine including a rotating portion and a stationary portion, the rotating portion including at least one rotating diode coupled to a field winding, and the stationary portion including a stator winding and an exciter winding. A control unit includes a first gate and a second gate. The exciter winding is connected in series to the first gate and the second gate during a first operating mode to energize the exciter winding. The exciter winding is electrically connected in series to a first gate but is electrically disconnected from the second gate in a second, different operating mode to electrically disconnect the exciter winding from an exciter energy source. A method of operating a synchronous machine is also disclosed.

公开(公告)号：US11905029B2

公开(公告)日：2024-02-20

申请号：US17328051

申请日：2021-05-24

Applicant: Hamilton Sundstrand Corporation

Inventor： Michael C. Harke ,  John F. Defenbaugh ,  William S. Heglund

IPC: B64D41/00 ,  H02J1/12

CPC classification number: B64D41/00 ,  H02J1/12 ,  B64D2221/00

Abstract: System and methods for passive power sharing of parallel sources are provided. Aspects include a first DC power supply including a first generator and a rectifier circuit, a second DC power supply including a second generator and a second rectifier, wherein a first output of the first DC power supply and a second output of the second DC power supply are commonly coupled at a common bus point, a first current sensing device coupled between the first output of the first DC power supply and the common bus point, a first generator controller configured to receive a first current signal from the first current sensing device, analyze the first current signal to determine a first voltage droop value based on the first current signal, and operate the first DC power supply to reduce a first voltage output of the first DC power supply by the first voltage droop value.