Fault-tolerant permanent magnet machine
AssigneeGeneral Electric Company
InventorsManoj Ramprasad Shah, Ayman Mohamed Fawzi El-Refaie
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Abstract
A system is provided in a permanent magnet (PM) machine comprises a stator, a rotor configured to rotate relative to the stator, a first set of windings disposed within the stator; and a second set of windings wound back and forth toroidally around the circumference of the stator. In accordance with an embodiment of the present technique the set of windings is configured to generate a magnetic flux saturating the stator so as to limit fault currents within the PM machine.
Claims40
A system, comprising:
- a permanent magnet (PM) machine, comprising:
- a stator;
- a rotor configured to rotate relative to the stator;
- a first set of windings disposed within the stator;
- and
- a second set of windings wound back and forth toroidally around the circumference of the stator.
A permanent magnet (PM) machine comprising:
- a stator, comprising:
- a first set of windings;
- and
- a second set of windings configured to limit fault currents within the PM machine.
A method for winding stator coils;
- comprising:
- winding a first set of coils with a stator of a permanent magnet (PM) machine;
- and
- winding a second set of coils back and forth toroidally around the circumference of the stator.
A system for generating supplemental electrical power from a rotating member of a turbofan engine, the system comprising:
- a permanent magnet (PM) generator for generating electrical power, the PM generator comprising:
- a stator;
- a rotor rotatably mounted relative to the stator;
- a primary set of windings disposed within the stator;
- an auxiliary set of windings wound back and forth toroidally around the circumference of the stator;
- and
- a main power converter for converting the electrical power from the PM generator to power a load,
- wherein the rotating member of the turbofan engine is coupled to the rotor of the PM generator for driving the PM generator.
Dependencies are inferred from the claim text.