Electrical generation from turbine engines

A turbine engine (100), comprising:

• an enclosure (120), defining:
• an air intake (121) at an upstream end;
• a compression section (122) downstream of the air intake;
• a combustion section (123) downstream of the compression section;
• a turbine section (124) downstream of the combustion section;
• and
• an exhaust (125) at a downstream end;
• a first shaft (160) coupled with a first compressor (170) of the compression section and with a first turbine (180) of the turbine section, wherein the first shaft is configured to rotate at a first rotational speed;
• a second shaft (160) coupled with a second compressor (170) of the compression section and with a second turbine (180) of the turbine section and running coaxially with the first shaft, wherein the second shaft is configured to rotate at a second rotational speed;
• a first armature winding (230), connected to one of the first shaft and the second shaft;
• a permanent magnet (210), emitting a first magnetic field (310) that is configured to rotate relative to the first armature winding at a differential rotational speed corresponding to a difference between the first rotational speed and the second rotational speed and induce a first current in the first armature winding;
• a first electromagnet (240), connected to the first armature winding, configured to emit a second magnetic field (320) when powered by the first current;
• a second armature winding (250), connected to a different one of the first shaft and the second shaft than the first armature winding, configured to rotate relative to the first electromagnet at the differential rotational speed and to have a second current induced on the second armature winding by the second magnetic field;
• a resonant emitter (260), connected to the second armature winding, configured to generate a third magnetic field (330) of at least a predefined frequency when powered by the second current;
• and
• a resonant receiver (340) disposed on the enclosure of the turbine engine, positioned to receive the third magnetic field and convert the third magnetic field into an electrical power output.

A method, comprising:

• rotating (710) a permanent magnet (210), emitting a first magnetic field, attached to a first shaft (220) of a turbine engine (100) about the first shaft and relative to a second shaft (220) of the turbine engine to induce a multiphase alternating current in a first armature winding (230) disposed on the second shaft of the turbine engine;
• powering (720), via the multiphase alternating current, a first electromagnet (240) disposed on the second shaft to generate a second magnetic field;
• inducing (730), by the second magnetic field, a single-phase direct current in a second armature winding (260) disposed on the first shaft;
• powering (740), via the single-phase direct current, a resonant emitter (260) to generate a third magnetic field at or above a predefined frequency;
• and
• converting (750) the third magnetic field as rotating via a resonant receiver (340) disposed on an interior surface of an enclosure (120) of the turbine engine into an electrical power output.

A method (600), comprising:

• affixing (610), at an interface region between a first shaft (220) and a second shaft (220) of a turbine engine (100), a permanent magnet (210) to the first shaft;
• affixing (620) a first spool shaft assembly (270A), including a first armature winding (230) and a first electromagnet (240), to the second shaft to place the first armature winding within a first magnetic field emitted by the permanent magnet;
• affixing (630) a second spool shaft assembly (270B), including a second armature winding (250) and a resonant emitter (260), to the first spool shaft relative to the second spool shaft assembly such that the second armature winding is located in relation to the first electromagnet to receive a second magnetic field when rotated relative to the first electromagnet;
• and
• affixing (640) a resonant receiver (340) to an interior surface of an enclosure (120) of the turbine engine in relation to the resonant emitter to receive a third magnetic field when the resonant emitter radiates the third magnetic field.