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US 2013/0300129 A1Published application
Variable flux electric starter machine having dual fields and method of operating the same
AssigneeRemy Technologies, L.L.C.
InventorMichael D. Bradfield
Life of this patent
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Abstract
A variable flux electric machine including a frame, an armature rotatably mounted within the frame, a first field having a plurality of windings that defines at least one wound pole fixedly mounted relative to the frame, a second field having at least one permanent magnet (PM) that defines at least one PM pole fixedly mounted relative to the frame, and a relay electrically coupled to the plurality of windings of the first field.
Claims12
A variable flux electric machine comprising:
- a frame;
- an armature rotatably mounted within the frame;
- a first field having a plurality of windings that defines at least one wound pole fixedly mounted relative to the frame,
- a second field having at least one permanent magnet (PM) that defines at least one PM pole fixedly mounted relative to the frame;
- and
- a relay electrically coupled to the plurality of windings of the first field.
3 more elements
A method of operating a variable flux electric machine, the method comprising:
- passing an electrical current through a plurality of wound poles of a wound field to generate a first flux;
- rotating an armature at a first crank point in response to the first flux;
- shorting at least one of the plurality of wound poles;
- generating a second flux through a permanent magnet (PM) field having a plurality of PM poles;
- and
- rotating the armature at a second crank point in response to the second flux, the second speed being greater than the first speed.
3 more elements
Dependencies are inferred from the claim text.