公开(公告)号：US11233470B2

公开(公告)日：2022-01-25

申请号：US16411267

申请日：2019-05-14

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Eric Latulipe ,  Richard Freer

IPC: H02P6/12 ,  B64D35/08 ,  H02K47/04 ,  B64D27/02 ,  B64D27/10 ,  B64D27/24 ,  B64D31/06 ,  F01D15/10 ,  F02K3/06 ,  H02P5/74 ,  H02P9/00 ,  B64D27/26 ,  B64D31/00 ,  H02K51/00 ,  H02P17/00 ,  B60L50/13 ,  B60L50/60 ,  B60L53/24 ,  B60L50/51 ,  B64D27/12 ,  H02K19/34 ,  H02P6/00 ,  B64D35/02 ,  G08C19/38 ,  H02K41/03 ,  B64D35/00 ,  H02P101/25 ,  H02P101/30

Abstract: There is described a method and system for operating a hybrid electric aircraft propulsion system. The method comprises modulating AC electric power applied to a first electric propulsor or a second electric propulsor from at least one motor inverter to synchronize the frequency of the first electric propulsor or the second electric propulsor with the frequency of a generator.

公开(公告)号：US11909283B2

公开(公告)日：2024-02-20

申请号：US17231705

申请日：2021-04-15

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Eric Latulipe ,  Richard Freer

IPC: H02P25/22 ,  H02K7/108 ,  H02K16/02 ,  H02K29/03 ,  F16H1/22 ,  H02K7/116

CPC classification number: H02K29/03 ,  F16H1/22 ,  H02K7/116 ,  H02K16/02

Abstract: An electric machine system disclosed herein comprises first and second electric machines configured to drive a load. The first electric machine has a plurality of first rotors. The second electric machine has a plurality of second rotors. At least one of the second rotors is indexed relative to a respective one of the first rotors to, in use, provide a torque phase offset between the first and second electric machines. A shaft is coupled to the load and connects the respective one of the first rotors with the at least one of the second rotors. The respective one of the first rotors is coaxial with and axially spaced apart from the at least one of the second rotors.

公开(公告)号：US11757386B2

公开(公告)日：2023-09-12

申请号：US17674419

申请日：2022-02-17

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Eric Latulipe ,  Richard Freer

IPC: H02P6/12 ,  B60L50/13 ,  B60L50/60 ,  B60L53/24 ,  B60L50/51 ,  B64D27/02 ,  B64D27/10 ,  B64D27/12 ,  B64D27/24 ,  B64D27/26 ,  B64D31/00 ,  B64D31/06 ,  B64D35/00 ,  B64D35/02 ,  B64D35/08 ,  F01D15/10 ,  F02K3/06 ,  G08C19/38 ,  H02K19/34 ,  H02K41/03 ,  H02K47/04 ,  H02K51/00 ,  H02P5/74 ,  H02P6/00 ,  H02P9/00 ,  H02P17/00 ,  H02P29/024 ,  H02P29/028 ,  H02P101/25 ,  H02P101/30 ,  H02P27/06

CPC classification number: H02P6/12 ,  B60L50/13 ,  B60L50/51 ,  B60L50/60 ,  B60L53/24 ,  B64D27/02 ,  B64D27/10 ,  B64D27/12 ,  B64D27/24 ,  B64D27/26 ,  B64D31/00 ,  B64D31/06 ,  B64D35/00 ,  B64D35/02 ,  B64D35/08 ,  F01D15/10 ,  F02K3/06 ,  G08C19/38 ,  H02K19/34 ,  H02K41/03 ,  H02K47/04 ,  H02K51/00 ,  H02P5/74 ,  H02P6/005 ,  H02P9/008 ,  H02P17/00 ,  H02P29/025 ,  H02P29/028 ,  B60L2200/10 ,  B60L2210/42 ,  B60L2220/20 ,  B64D2027/026 ,  F05D2220/323 ,  F05D2220/764 ,  H02K2213/06 ,  H02P27/06 ,  H02P2101/25 ,  H02P2101/30

Abstract: A hybrid electric aircraft propulsion system and method of operation are described. The system comprises a thermal engine, a generator coupled to the thermal engine, a first electric propulsor operatively connected to the generator to receive alternating current (AC) electric power therefrom, a second electric propulsor, a generator inverter operatively connected to the generator to convert AC electric power to direct current (DC) electric power, and a first motor inverter operatively connected to the generator inverter and selectively connected to one of the first electric propulsor and the second electric propulsor and configured to receive the DC electric power and provide the first electric propulsor and the second electric propulsor with AC electric power, respectively.

公开(公告)号：US11283376B2

公开(公告)日：2022-03-22

申请号：US16411484

申请日：2019-05-14

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Eric Latulipe ,  Richard Freer

IPC: H02P6/12 ,  B64D35/08 ,  H02K47/04 ,  B64D27/02 ,  B64D27/10 ,  B64D27/24 ,  B64D31/06 ,  F01D15/10 ,  F02K3/06 ,  H02P5/74 ,  H02P9/00 ,  B64D27/26 ,  B64D31/00 ,  H02K51/00 ,  H02P17/00 ,  B60L50/13 ,  B60L50/60 ,  B60L53/24 ,  B60L50/51 ,  B64D27/12 ,  H02K19/34 ,  H02P6/00 ,  B64D35/02 ,  G08C19/38 ,  H02K41/03 ,  B64D35/00 ,  H02P29/028 ,  H02P29/024 ,  H02P101/25 ,  H02P101/30 ,  H02P27/06

Abstract: A hybrid electric aircraft propulsion system and method of operation are described. The system comprises a thermal engine, a generator coupled to the thermal engine, a first electric propulsor operatively connected to the generator to receive alternating current (AC) electric power therefrom, a second electric propulsor, a generator inverter operatively connected to the generator to convert AC electric power to direct current (DC) electric power, and a first motor inverter operatively connected to the generator inverter and selectively connected to one of the first electric propulsor and the second electric propulsor and configured to receive the DC electric power and provide the first electric propulsor and the second electric propulsor with AC electric power, respectively.

公开(公告)号：US11139725B2

公开(公告)日：2021-10-05

申请号：US16516501

申请日：2019-07-19

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Eric Latulipe

IPC: H02K16/02

Abstract: The electric machine includes a plurality of rotors drivingly coupled to a common shaft defining a shaft axis about which the common shaft is rotatable, and a common stator for the plurality of rotors, the common stator extending circumferentially about the common shaft. The rotors are rotatable about respective rotor axes which are substantially perpendicular to the shaft axis.

公开(公告)号：US11025181B2

公开(公告)日：2021-06-01

申请号：US16411475

申请日：2019-05-14

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Eric Latulipe ,  Richard Freer

IPC: H02P6/12 ,  B64D35/08 ,  H02K47/04 ,  B64D27/02 ,  B64D27/10 ,  B64D27/24 ,  B64D31/06 ,  F01D15/10 ,  F02K3/06 ,  H02P5/74 ,  H02P9/00 ,  B64D27/26 ,  B64D31/00 ,  H02K51/00 ,  H02P17/00 ,  B60L50/13 ,  B60L50/60 ,  B60L53/24 ,  B60L50/51 ,  B64D27/12 ,  H02K19/34 ,  H02P6/00 ,  B64D35/02 ,  G08C19/38 ,  H02K41/03 ,  H02P101/25 ,  H02P101/30

Abstract: Methods and systems for operating a hybrid electric aircraft propulsion system mounted to an aircraft. The method comprises driving a first rotating propulsor from a first electric motor operatively connected to a generator, driving a second rotating propulsor from a second electric motor operatively connected to the generator, and driving a third rotating propulsor from a thermal engine, the thermal engine operatively connected to the generator and configured to drive the generator.

公开(公告)号：US11894742B2

公开(公告)日：2024-02-06

申请号：US17225490

申请日：2021-04-08

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Eric Latulipe ,  Richard Freer

IPC: H02K29/03 ,  F16H1/22 ,  H02K7/116 ,  H02K16/02

CPC classification number: H02K29/03 ,  F16H1/22 ,  H02K7/116 ,  H02K16/02

Abstract: An electric machine system described herein comprises a first and second electric machines configured to drive a load. The first electric machine has a plurality of first rotors driven using electric power having a first phase. The second electric machine has a plurality of second rotors driven using electric power having a second phase. The second phase differs from the first phase. Each of one or more shafts connects a first rotor with a second rotor. The first rotor is coaxial with and axially spaced apart from the second rotor.

公开(公告)号：US11863032B2

公开(公告)日：2024-01-02

申请号：US17514639

申请日：2021-10-29

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Eric Latulipe ,  Richard Freer

IPC: H02K29/03 ,  F16H1/22 ,  H02K16/02 ,  H02K7/116

CPC classification number: H02K29/03 ,  F16H1/22 ,  H02K7/116 ,  H02K16/02

Abstract: An electric machine system described herein comprises a first electric machine rotor, a first gear and a second gear. The first gear is connected to the first electric machine rotor and to a first input/output shaft. The second gear is connected to the first electric machine rotor and to a second input/output shaft. The first electric machine rotor is disposed between the first gear and the second gear.

公开(公告)号：US10998806B2

公开(公告)日：2021-05-04

申请号：US16212799

申请日：2018-12-07

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Eric Latulipe ,  Richard Freer

IPC: H02K29/03 ,  H02K16/02 ,  H02K7/116 ,  F16H1/22

Abstract: An electric machine system described herein comprises a first and second electric machines configured to drive a load. The first electric machine has a plurality of first rotors driven using electric power having a first phase. The second electric machine has a plurality of second rotors driven using electric power having a second phase. The second phase differs from the first phase. Each of one or more shafts connects a first rotor with a second rotor. The first rotor is coaxial with and axially spaced apart from the second rotor.

公开(公告)号：US20200079518A1

公开(公告)日：2020-03-12

申请号：US16411475

申请日：2019-05-14

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Eric Latulipe ,  Richard Freer

IPC: B64D31/00 ,  B64D27/02 ,  B64D27/26 ,  H02K51/00 ,  H02P17/00

Abstract: Methods and systems for operating a hybrid electric aircraft propulsion system mounted to an aircraft. The method comprises driving a first rotating propulsor from a first electric motor operatively connected to a generator, driving a second rotating propulsor from a second electric motor operatively connected to the generator, and driving a third rotating propulsor from a thermal engine, the thermal engine operatively connected to the generator and configured to drive the generator.