Method and assembly of a generator
AssigneeGE Aviation Systems LLC
InventorsHao Huang, Xiaochuan Jia
Life of this patent
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Abstract
A generator includes a stator core having a set of stator poles formed by a post and a wire wound about the post to form a stator winding, with the stator winding having end turns, a rotor having a set of rotor poles and configured to rotate relative to the stator and a rotor channel for liquid coolant to flow through the rotor to a set of coolant apertures, and a set of rotor pole coolant channels aligned with and proximate to the set of rotor poles. The liquid coolant flow extracts heat from the generator.
Claims20
A generator comprising:
- a stator core having a set of stator poles formed by a post and a wire wound about the post to form a stator winding, with the stator winding having end turns;
- a rotor having a set of rotor poles and configured to rotate relative to the stator and a rotor channel for liquid coolant to flow through the rotor to a set of coolant apertures;
- a set of rotor pole coolant channels aligned with and proximate to the set of rotor poles;
- wherein the generator can be selectively configured to operate as a wet cavity generator by coupling a set of nozzles with at least a subset of the coolant apertures such that liquid coolant traversing the rotor channel is ejected from the set of nozzles to the stator winding end turns to extract heat from the stator windings, or as a dry cavity generator by fluidly coupling at least a subset of the coolant apertures to the rotor pole coolant channels such that liquid coolant traversing the rotor channel flows through the rotor pole coolant channels to extract heat from the set of rotor poles.
A method of assembling a generator comprising:
- determining whether a generator having a stator core with a set of stator winding end turns and a rotor with a rotor channel fluidly connected to a set of coolant apertures and a set of rotor pole coolant channels aligned with and proximate to a set of rotor poles and fluidly connected to the rotor channel is to be configured to operate as a wet cavity generator or a dry cavity generator;
- if the generator is to operate as a wet cavity generator, selectively coupling a set of nozzles with at least a subset of the coolant apertures such that liquid coolant traversing the rotor channel is ejected from the set of nozzles to the stator winding end turns to extract heat from the stator windings during generator operation;
- and
- if the generator is to operate as a dry cavity generator, selectively fluidly coupling at least a subset of the coolant apertures to the set of rotor pole coolant channels aligned with and proximate to the set of rotor poles such that liquid coolant traversing the rotor channel flows through the rotor pole coolant channels to extract heat from the set of rotor poles during generator operation.
A method of converting a dry cavity generator to a wet cavity generator comprising:
- removing a liquid coolant fluid coupling between a rotor and a set rotor pole coolant channels aligned with and proximate to a set of rotor poles, leaving a set of rotor coolant apertures fluidly coupled with a rotor channel for liquid coolant;
- and
- selectively coupling a set of nozzles with at least a subset of the rotor coolant apertures such that liquid coolant traversing the rotor channel is ejected from the set of nozzles to a set of stator winding end turns to extract heat from the stator windings during generator operation.
Dependencies are inferred from the claim text.