Abstract: Apparatuses, systems and methods for implementing a downhole alternator assembly are disclosed. In some embodiments, a downhole alternator assembly comprises a casing; a turbine disposed within the casing and actuated by a drilling fluid flow; and a rotor disposed within the casing. The rotor includes 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. The downhole alternator assembly includes a stator disposed within the casing. The stator includes 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.

Abstract: A power condition system is disclosed for conditioning power for charging of at least one capacitive element of a pulse power electrode, where the electrical power is received from at least one of a downhole alternator or generator. The received electrical power is rectified and controlled for both voltage and current amplitude. The electrical power is then split into two parallel square wave signals. The electrical power is then transformed, using parallel high frequency high voltage transformers, to a high voltage signal. The high voltage signals are rejoined and rectified to produce a high voltage DC signal. The DC signal is smoothed at a high capacity inductor and output via a switching element to at least one capacitive element of the pulse power electrodes.

Abstract: A configuration for cooling capacitors comprises a flow tube within a tool body of a pulse power drilling assembly. The flow tube is configured to provide a flow path for drilling fluid through one or more sub-assemblies of the pulse power drilling assembly. One or more capacitors are positioned between the flow tube and the tool body. Each of the one or more capacitors comprises a cooling tube embedded within the capacitor to provide a thermally conductive path for removal of heat associated with the one or more capacitors. Cooling capacitors comprises providing a flow of cooling fluid to a cooling tube embedded in a capacitor in the pulse power drilling assembly.

Abstract: A configuration for cooling capacitors comprises a flow tube within a tool body of a pulse power drilling assembly. The flow tube is configured provide a flow path for drilling fluid through one or more sub-assemblies of the pulse power drilling assembly. One or more capacitors are positioned between the flow tube and the tool body. Each of the one or more capacitors comprises a cooling tube embedded within the capacitor to provide a thermally conductive path for removal of heat associated with the one or more capacitors. Cooling capacitors comprises providing a flow of cooling fluid to a cooling tube embedded in a capacitor in the pulse power drilling assembly.

Abstract: Apparatuses, systems and methods for implementing a downhole alternator assembly are disclosed. In some embodiments, a downhole alternator assembly comprises a casing; a turbine disposed within the casing and actuated by a drilling fluid flow; and a rotor disposed within the casing. The rotor includes 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. The downhole alternator assembly includes a stator disposed within the casing. The stator includes 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.

Abstract: A power condition system is disclosed for conditioning power for charging of at least one capacitive element of a pulse power electrode, where the electrical power is received from at least one of a downhole alternator or generator. The received electrical power is rectified and controlled for both voltage and current amplitude. The electrical power is then split into two parallel square wave signals. The electrical power is then transformed, using parallel high frequency high voltage transformers, to a high voltage signal. The high voltage signals are rejoined and rectified to produce a high voltage DC signal. The DC signal is smoothed at a high capacity inductor and output via a switching element to at least one capacitive element of the pulse power electrodes.

Abstract: A downhole drilling system is disclosed. The downhole drilling system may include an axial-field multi-armature alternator system, mechanically driven by a turbine; a pulse-generating circuit electrically coupled to the axial-field multi-armature alternator system, the pulse-generating circuit receiving power from the axial-field multi-armature alternator system to provide an electric pulse; and a drill bit including a first electrode and a second electrode electrically coupled to the pulse-generating circuit to receive the electric pulse from the pulse-generating circuit.

Abstract: A downhole drilling system is disclosed. The downhole drilling system may include an axial-field multi-armature alternator system, mechanically driven by a turbine; a pulse-generating circuit electrically coupled to the axial-field multi-armature alternator system, the pulse-generating circuit receiving power from the axial-field multi-armature alternator system to provide an electric pulse; and a drill bit including a first electrode and a second electrode electrically coupled to the pulse-generating circuit to receive the electric pulse from the pulse-generating circuit.