ELECTRICALLY COUPLED COUNTER-ROTATION FOR GAS TURBINE COMPRESSORS
First Claim
1. A system for providing stage-by-stage counter rotation in a multi-stage axial compressor of a gas turbine engine using electrical coupling comprising:
- an electric power generator mounted in an engine core on a gas turbine engine shaft for driving a first plurality of compressor blades;
an electric motor mounted in the engine core on a second shaft for driving a second plurality of compressor blades in an opposite direction from a direction of the first plurality of compressor blades, wherein the first plurality of compressor blades and the second plurality of compressor blades alternate in the compressor on a stage-by-stage basis; and
a power control module for receiving electrical power from the electricalgenerator and controlling operation of the electric motor.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method for implementing stage-by-stage counter rotation in a multi-stage axial compressor of a gas turbine engine. The system includes an electrical power generator and an electric motor. A turbine-driven shaft connected to an armature of the electrical generator drives a first plurality of compressor blades. The electrical generator armature induces changing magnetic flux in the stator coils of the electrical generator which generates electrical power that is sent to a power control module. The power control module controls the electrical motor and excites the coils in the electric motor stator which drives the electric motor armature. The electric motor armature drives a second shaft which drives a second plurality of compressor blades in an opposite direction to the first plurality of compressor blades.
41 Citations
22 Claims
-
1. A system for providing stage-by-stage counter rotation in a multi-stage axial compressor of a gas turbine engine using electrical coupling comprising:
-
an electric power generator mounted in an engine core on a gas turbine engine shaft for driving a first plurality of compressor blades; an electric motor mounted in the engine core on a second shaft for driving a second plurality of compressor blades in an opposite direction from a direction of the first plurality of compressor blades, wherein the first plurality of compressor blades and the second plurality of compressor blades alternate in the compressor on a stage-by-stage basis; and a power control module for receiving electrical power from the electrical generator and controlling operation of the electric motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A system for providing stage-by-stage counter rotation in a multi-stage axial compressor of gas turbine engine comprising:
-
an electrical power generator mounted in an engine core and including a stator and an armature; an electric motor mounted in the engine core and including a stator and an armature; a turbine-driven shaft for driving a first plurality of compressor blades and electrically coupled to the electric generator armature, the electric generator armature inducing a changing magnetic flux in a plurality of stator coils of the generator stator; a power control module for receiving electrical power from the electrical generator and controlling the electric motor by exciting a plurality of stator coils in the electric motor to drive the electric motor armature; and a second shaft driven by the electric motor armature, the second shaft driving a second plurality of compressor blades in an opposite direction from a direction of the first plurality of compressor blades. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A system for providing stage-by-stage counter rotation of compressor blades mounted on separate shafts in a multi-stage axial compressor of a gas turbine engine comprising:
-
a first plurality of compressor blades driven by a turbine shaft; a second plurality of compressor blades driven by a second shaft in a direction opposite to the direction of the turbine shaft; an electrical generator mounted in an engine core for driving the first plurality of compressor blades and providing electrical power to a power control module; and an electric motor mounted in an engine core for receiving electrical power from the power control module and driving the second plurality of compressor blades in a direction opposite from a direction of the first plurality of compressor blades. - View Dependent Claims (20, 21, 22)
-
Specification