초록

A system comprises a turbine engine having a first spool connected to a compressor portion, a power turbine spool, a first generator connected to the power turbine spool, and a second generator connected to the first spool.

대표청구항 ▼

1. A system comprising: a turbine engine having a high pressure spool mechanically connected to a compressor portion;a power turbine spool that is operative to be driven by exhaust emitted from the turbine engine;a first generator mechanically connected to the power turbine spool;a second generator

1. A system comprising: a turbine engine having a high pressure spool mechanically connected to a compressor portion;a power turbine spool that is operative to be driven by exhaust emitted from the turbine engine;a first generator mechanically connected to the power turbine spool;a second generator mechanically connected to the high pressure spool;an outer shaft operative to connect the first generator to the power turbine spool; andan inner shaft disposed in a cavity in the outer shaft operative to connect the second generator to the high pressure spool. 2. The system of claim 1, wherein the first generator is a synchronous speed generator. 3. The system of claim 1, wherein the second generator is a variable speed generator. 4. The system of claim 1, wherein the system further comprises an electrical power source operative to drive the second generator. 5. The system of claim 1, wherein the first generator is connected to a steam turbine. 6. The system of claim 1, wherein the first generator is connected to a mechanical load. 7. The system of claim 1, wherein the system further comprises a combustor operative to heat exhaust emitted from the high pressure spool and output the heated exhaust to the power turbine. 8. The system of claim 1, wherein the system further comprises a combustor operative to heat exhaust emitted from a first stage of the high pressure spool and output the heated exhaust to a second stage of the high pressure spool. 9. The system of claim 1, wherein the system further comprises an electrical power source operative to drive the first generator. 10. The system of claim 1, wherein the first generator is a variable speed generator. 11. A system comprising: a turbine engine having a high pressure spool connected to a compressor portion;a power turbine spool operative to be driven by exhaust from the turbine engine;a first generator connected to the power turbine spool;a variable speed generator connected to the high pressure spool, operative to be driven by the high pressure spool;an outer shaft operative to connect the first generator to the power turbine spool; andan inner shaft disposed in a cavity in the outer shaft operative to connect the variable speed generator to the high pressure spool. 12. The system of claim 11, wherein the variable speed generator is further operative to drive the compressor portion in startup operation. 13. A system comprising: a turbine engine having a high pressure spool mechanically connected to a compressor portion;a power turbine spool that is operative to be driven by exhaust emitted from the turbine engine;a first generator mechanically connected to the power turbine spool;a second generator mechanically connected to the high pressure spool;an outer shaft operative to connect the second generator to the high pressure spool; andan inner shaft disposed in a cavity in the outer shaft operative to connect the first generator to the power turbine spool. 14. The system of claim 13, wherein the first generator is a synchronous speed generator. 15. The system of claim 13, wherein the second generator is a variable speed generator. 16. The system of claim 13, wherein the system further comprises an electrical power source operative to drive the second generator. 17. The system of claim 13, wherein the first generator is connected to a steam turbine. 18. The system of claim 13, wherein the first generator is connected to a mechanical load. 19. The system of claim 13, wherein the system further comprises a combustor operative to heat exhaust emitted from the high pressure spool and output the heated exhaust to the power turbine. 20. The system of claim 13, wherein the system further comprises a combustor operative to heat exhaust emitted from a first stage of the high pressure spool and output the heated exhaust to a second stage of the high pressure spool.