초록 ▼

A turbine generator uses a common bearing carrier to support a high-speed spool and a low-speed spool, thereby enabling a more axially compact turbine generator design. The high-speed spool includes a high-speed compressor assembly mechanically powered by a high-speed turbine, which receives power f

A turbine generator uses a common bearing carrier to support a high-speed spool and a low-speed spool, thereby enabling a more axially compact turbine generator design. The high-speed spool includes a high-speed compressor assembly mechanically powered by a high-speed turbine, which receives power from a combustion chamber between the high-speed turbine and the high-speed compressor assembly. The low-speed spool includes a pre-combustion power turbine aerodynamically powered by the compressor assembly and upstream of the combustion chamber. The pre-combustion turbine mechanically powers an electrical generator, which includes coreless stators and a rotor assembly. The stators have a planar configuration to receive axial flux from magnets of the rotor assembly. Optionally, the low-speed spool may include a post-combustion turbine that is arranged downstream of the combustion chamber and that mechanically powers the electrical generator.

대표청구항 ▼

1. A turbine generator comprising: a combustion chamber;a high-speed spool comprising a high-speed turbine downstream of the combustion chamber to receive power therefrom, the high-speed turbine operatively coupled to a high-speed compressor assembly upstream of the combustion chamber;a low-speed sp

1. A turbine generator comprising: a combustion chamber;a high-speed spool comprising a high-speed turbine downstream of the combustion chamber to receive power therefrom, the high-speed turbine operatively coupled to a high-speed compressor assembly upstream of the combustion chamber;a low-speed spool comprising a pre-combustion power turbine directly upstream of the combustion chamber and directly downstream of the high-speed compressor assembly to receive power therefrom;a common bearing carrier attached to a high-speed bearing assembly supporting the high-speed spool, the common bearing carrier further attached to a low-speed bearing assembly supporting the low-speed spool; andan electrical generator located radially outside of the low-speed bearing assembly and between the pre-combustion power turbine and the high-speed turbine, the electrical generator comprising a rotor assembly operatively coupled to the pre-combustion turbine. 2. The turbine generator of claim 1, wherein the high-speed spool and the low-speed spool are arranged to have a common axis of rotation. 3. The turbine generator of claim 1, wherein the high-speed bearing assembly is arranged radially inside the common bearing carrier and the low-speed bearing assembly is arranged radially outside the common bearing carrier. 4. The turbine generator of claim 1, wherein an axial location of the high-speed bearing assembly overlaps with an axial location of the low-speed bearing assembly. 5. The turbine generator of claim 1, wherein the high-speed bearing assembly comprises a bearing cartridge fastened to the common bearing carrier by a retaining pin. 6. The turbine generator of claim 1, wherein the high-speed compressor assembly is aerodynamically coupled with the pre-combustion power turbine. 7. The turbine generator of claim 6, wherein the high-speed compressor assembly comprises a centrifugal compressor impeller arranged to discharge a high-velocity flow of air to the pre-combustion turbine, thereby powering the pre-combustion turbine. 8. The turbine generator of claim 1, wherein the low-speed spool further comprises a post-combustion turbine upstream of the high-speed turbine, the post-combustion turbine directly downstream of the combustion chamber to receive power therefrom. 9. The turbine generator of claim 1, wherein the electrical generator comprises one or more coreless generator stators fabricated on printed circuit boards. 10. A turbine generator comprising: a combustion chamber;a high-speed spool comprising a high-speed turbine downstream of the combustion chamber to receive power therefrom, the high-speed turbine operatively coupled to a high-speed compressor assembly upstream of the combustion chamber;a low-speed spool comprising a pre-combustion power turbine directly upstream of the combustion chamber and directly downstream of the high-speed compressor assembly to receive power therefrom; andan electrical generator located radially outside of the low-speed bearing assembly and between the pre-combustion power turbine and the high-speed turbine, the electrical generator comprising a rotor assembly operatively coupled to the pre-combustion turbine. 11. The turbine generator of claim 10, wherein the rotor assembly comprises one or more permanent magnets. 12. The turbine generator of claim 10, wherein the electrical generator comprises one or more stators electrically excited by an axial magnetic flux received from the rotor assembly. 13. The turbine generator of claim 10, wherein the electrical generator comprises one or more stators electrically excited by a radial axial magnetic flux received from the rotor assembly. 14. The turbine generator of claim 10, wherein the electrical generator comprises one or more coreless generator stators fabricated on printed circuit boards. 15. The turbine generator of claim 10, further comprising: a common bearing carrier attached to a high-speed bearing assembly supporting the high-speed spool, the common bearing carrier further attached to a low-speed bearing assembly supporting the low-speed spool. 16. The turbine generator of claim 10, wherein an axial location of the high-speed bearing assembly overlaps with an axial location of the low-speed bearing assembly, andwherein the high-speed bearing assembly is arranged radially inside the common bearing carrier and the low-speed bearing assembly is arranged radially outside the common bearing carrier. 17. A turbine generator comprising: a combustion chamber;a high-speed spool comprising a high-speed turbine downstream of the combustion chamber to receive power therefrom, the high-speed turbine operatively coupled to a compressor impeller upstream of the combustion chamber;a low-speed spool comprising a post-combustion power turbine upstream of the high-speed turbine and downstream of the combustion chamber to receive power therefrom; andan electrical generator comprising a rotor assembly operatively coupled to the post-combustion turbine, the rotor assembly operatively coupled to a pre-combustion turbine upstream of the combustion chamber and directly downstream of the compressor impeller to receive power therefrom. 18. The turbine generator of claim 17, further comprising: a common bearing carrier attached to a high-speed bearing assembly supporting the high-speed spool, the common bearing carrier further attached to a low-speed bearing assembly supporting the low-speed spool. 19. The turbine generator of claim 17, wherein the rotor assembly is operatively coupled to a rotating diffuser upstream of the combustion chamber and directly downstream of the compressor impeller to receive flow therefrom. 20. The turbine generator of claim 17, wherein the turbine generator further comprises a stationary diffuser upstream of the combustion chamber and directly downstream of the compressor impeller.