Augmented drive of compressors via differential and multistage turbine
A method of distributing power within a gas turbine engine is disclosed. In various embodiments, the method includes driving a high pressure turbine having a first stage and a second stage with an exhaust stream from a combustor, the first stage connected to a high pressure turbine first stage spool and the second stage connected to a high pressure turbine second stage spool; driving a high pressure compressor connected to a high pressure compressor spool via a differential system, the differential system having a first stage input gear connected to the high pressure turbine first stage spool, a second stage input gear connected to the high pressure turbine second stage spool and an output gear assembly connected to the high pressure compressor spool; and selectively applying an auxiliary input power into at least one of the high pressure compressor spool and the high pressure turbine.
1. A method of distributing power within a gas turbine engine, comprising:
driving a high pressure turbine having a first stage and a second stage with an exhaust stream from a combustor, the first stage connected to a high pressure turbine first stage spool and the second stage connected to a high pressure turbine second stage spool;
driving a high pressure compressor connected to a high pressure compressor spool via a differential system, the differential system having a first stage input gear connected to the high pressure turbine first stage spool, a second stage input gear connected to the high pressure turbine second stage spool and an output gear assembly connected to the high pressure compressor spool; and
selectively applying an auxiliary input power into at least one of the high pressure compressor spool and the high pressure turbine.
2. The method of claim 1 , wherein the selectively applying the auxiliary input power includes applying a first input power to a first motor-generator connected to the high pressure compressor spool.
3. The method of claim 1 , wherein the selectively applying the auxiliary input power includes applying a second input power to a second motor-generator connected to the high pressure turbine second stage spool.
4. The method of claim 1 , wherein the selectively applying the auxiliary input power includes applying a first input power to a first motor-generator connected to the high pressure compressor spool and a second input power to a second motor-generator connected to the high pressure turbine second stage spool.
5. The method of claim 1 , further comprising selectively extracting an auxiliary output power from at least one of the high pressure compressor spool and the high pressure turbine.
6. The method of claim 5 , wherein the selectively extracting the auxiliary output power includes charging a storage device.
7. The method of claim 5 , wherein the selectively extracting the auxiliary output power includes extracting a first output power from a first motor-generator connected to the high pressure compressor spool.
8. The method of claim 5 , wherein the selectively extracting the auxiliary output power includes extracting a second output power from a second motor-generator connected to the high pressure turbine second stage spool.
9. The method of claim 5 , wherein the selectively extracting the auxiliary output power includes extracting a first output power from a first motor-generator connected to the high pressure compressor spool and a second output power from a second motor-generator connected to the high pressure turbine second stage spool.
10. The method of claim 5 , wherein the auxiliary input power comprises an electrical power from a storage device.
11. The method of claim 10 , wherein the auxiliary input power enables a reduced fuel power used to drive the high pressure turbine.