Turbomachine drive arrangement
OwnerDavid S. Behling, Glenn C. Lemmers, JR.inventors
Life of this patent
Estimating the term…
Abstract
An example arrangement for driving a turbomachine includes an input shaft that is configured to rotate a rotor of the turbomachine through a hydraulic log and gear differential rotatable coupled to the input shaft. A motor-generator is rotatably coupled to the differential. The motor-generator has a motor mode of operation and a generator mode of operation. The motor-generator is configured to drive the input shaft through the hydraulic log and differential when the motor-generator is in the motor mode of operation. The input shaft is configured to drive the motor-generator through the hydraulic log and differential when the motor-generator is in the generator mode of operation.
Claims21
1) An arrangement for driving a turbomachine, comprising:
- an input shaft that is configured to rotate a turbomachine rotor;
- a hydraulic log assembly rotatably coupled to the input shaft;
- and
- a motor-generator rotatably coupled to the hydraulic log assembly, the motor-generator having a motor mode of operation and a generator mode of operation, wherein the motor-generator is configured to drive the input shaft through the hydraulic log assembly when the motor-generator is in the motor mode of operation, and the input shaft is configured to drive the motor-generator through the hydraulic log assembly when the motor-generator is in the generator mode of operation.
8) A gas turbine engine arrangement, comprising:
- a motor-generator;
- a compressor rotor;
- and
- a hydraulic log configured to adjust a rotational input from one of the motor-generator or the compressor rotor, and to provide a rotational output to the other of the motor-generator or the compressor rotor.
16) A method of driving components within a turbomachine, comprising:
- providing a first rotational input to a hydraulic log using a motor-generator when the motor-generator is in a motor mode of operation;
- adjusting the first rotational input to provide a second rotational input that drives a compressor rotor;
- providing a third rotational input to the hydraulic log using the compressor rotor when the motor-generator is in a generator mode of operation;
- and
- adjusting the third rotational input and to provide a fourth rotational input that drives the motor-generator.
Dependencies are inferred from the claim text.