[특허]Gas turbine engine system having a disengageable electric machine

Rolls-Royce Corporation

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Gas turbine engine system having a disengageable electric machine

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02C-007/32 F01D-015/10 F02C-007/22 F02C-009/28 F02C-003/107 F02C-006/20
출원번호	US-0819097 (2015-08-05)
등록번호	US-10125692 (2018-11-13)
발명자 / 주소	Ernst, James W.
출원인 / 주소	Rolls-Royce Corporation
대리인 / 주소	Barnes & Thornburg LLP
인용정보	피인용 횟수 : 0 인용 특허 : 16

초록

A gas turbine engine system includes a gas turbine engine, an electric machine, a fuel pump, and a clutch arranged to selectively couple and decouple the electric machine and the fuel pump with the gas turbine engine. Control circuitry may control the clutch in response to data signals indicating engine operating information, current operating conditions, and/or other information.

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1. A turbine engine system for an aircraft, the turbine engine system comprising: a gas turbine engine;an electric machine coupled to the gas turbine engine;a fuel pump coupled to the electric machine;a clutch configured to selectively couple and decouple the electric machine and the fuel pump from the gas turbine engine; andcontrol circuitry configured to: (i) disengage the clutch and cause the electric machine to power the fuel pump when the clutch is disengaged, (ii) engage the clutch and cause the electric machine to supply power to the gas turbine engine when the clutch is engaged, and (iii) engage the clutch and cause the gas turbine engine to supply power to the fuel pump and the electric machine when the clutch is engaged. 2. The turbine engine system of claim 1, comprising a gearbox coupled to the gas turbine engine, wherein the electric machine and the fuel pump are coupled to the gearbox by the clutch. 3. The turbine engine system of claim 1, wherein the clutch is coupled to the electric machine. 4. The turbine engine system of claim 1, wherein the clutch is coupled to the fuel pump. 5. The turbine engine system of claim 1, wherein the electric machine is arranged to transfer electrical energy from the gas turbine engine to an energy storage device. 6. The turbine engine system of claim 1, wherein the clutch, the electric machine, and the fuel pump are arranged for the fuel pump to be operable independently of the gas turbine engine. 7. A turbine engine system for an aircraft, the turbine engine system comprising: a gas turbine engine;an electric machine coupled to the gas turbine engine;a fuel pump coupled to the electric machine; anda clutch configured to selectively couple and decouple the electric machine and the fuel pump from the gas turbine engine after a startup phase of the gas turbine engine,wherein the electric machine is arranged to transfer electrical energy from the gas turbine engine to an energy storage device,wherein the electric machine is arranged to transfer electrical energy from the energy storage device to the gas turbine engine when the clutch is engaged. 8. The turbine engine system of claim 7, comprising control circuitry in communication with the gas turbine engine and the clutch, the control circuitry to control the clutch in response to a data signal received from the gas turbine engine. 9. The turbine engine system of claim 7, comprising control circuitry in communication with the gas turbine engine and the clutch, the control circuitry configured to engage the clutch in response to an electrical failure in the turbine engine system. 10. The turbine engine system of claim 7, comprising control circuitry in communication with the gas turbine engine and the clutch, the control circuitry configured to disengage the clutch in response to a data signal indicative of a level of power demanded by the turbine engine system being less than a threshold power level. 11. The turbine engine system of claim 7, comprising control circuitry in communication with the gas turbine engine and the clutch, the control circuitry configured to selectively engage and disengage the clutch based on a level of power demanded by the turbine engine system. 12. The turbine engine system of claim 7, wherein the electric machine is arranged to drive the fuel pump when the clutch is disengaged. 13. The turbine engine system of claim 7, comprising control circuitry in communication with the gas turbine engine and the clutch, the control circuitry configured to selectively control the clutch in response to a change in an operating phase of the turbine engine. 14. An accessory subsystem for a gas turbine engine, the accessory subsystem comprising: a power take-off assembly drivable by a main shaft of the gas turbine engine;a clutch coupled to the power take-off assembly;an electric machine;a fuel pump coupled to the electric machine; andcontrol circuitry configured to: (i) disengage the clutch and cause the electric machine to power the fuel pump when the clutch is disengaged, (ii) engage the clutch and cause the electric machine to supply power to the power take-off assembly when the clutch is engaged, and (iii) engage the clutch and cause the power take-off assembly to supply power to the fuel pump and the electric machine when the clutch is engaged,wherein the clutch is arranged to selectively couple and decouple the electric machine and the fuel pump from the main shaft of the gas turbine engine. 15. The accessory subsystem of claim 14, wherein the clutch is connected to the electric machine. 16. The accessory subsystem of claim 14, wherein the clutch is connected to the fuel pump. 17. The accessory subsystem of claim 14, wherein the control circuitry is configured to control the clutch in response to a data signal received from the gas turbine engine. 18. The accessory subsystem of claim 14, wherein the control circuitry is in communication with the gas turbine engine and the clutch, the control circuitry is configured to engage the clutch in response to an electrical failure in the turbine engine system. 19. The accessory subsystem of claim 14, wherein the control circuitry is in communication with the gas turbine engine and the clutch, wherein the control circuitry is configured to engage and disengage the clutch in response to changes in a power level demanded by the gas turbine engine.

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Gas turbine engine system having a disengageable electric machine

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Gas turbine engine system having a disengageable electric machine

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이 특허에 인용된 특허 (16)

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