Patent ID: 11970923
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC E  H | IPC E  H

Claim 0:
1. A downhole generator assembly comprising:
a turbine assembly having at least one turbine actuated by a drilling fluid flow; and
a plurality of alternator assemblies, each of the alternator assemblies comprising:
a casing,
a rotor disposed within the casing, the rotor including,
a cylindrical rotor core rotated by the turbine;
a plurality of permanent magnets disposed in the cylindrical rotor core; and
a drilling fluid channel extending axially through the center of the cylindrical rotor core,

a stator disposed within the casing, the stator including,
a cylindrical stator core disposed concentrically between the cylindrical rotor core and the casing,
conductor windings within the cylindrical stator core, and
a plurality of radially distributed fluid channels extending axially within the cylindrical stator core between a front end of the cylindrical stator core and a back end of the cylindrical stator core, and

an electrical interface configured to electrically couple the alternator assembly to a different alternator assembly of the plurality of alternator assemblies, the electrical interface further configured to provide electrical power generated by the alternator assembly to the different alternator assembly;

wherein a first alternator assembly of the plurality of alternator assemblies is mechanically coupled to the turbine assembly at a first end of the first alternator assembly and wherein the first alternator assembly is mechanically connected to a second alternator assembly at a second end of the first alternator assembly, wherein rotation of the turbine causes the cylindrical rotor core of the first alternator assembly and the cylindrical rotor core of the second alternator assembly to rotate.