Low noise automotive alternator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 27, 2003
Grant Date -
N/A
app pub date -
Oct 2, 2000
filing date -
Oct 2, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A reduced noise alternator that reduces harmonic magnetic fluxes in the alternator and thus the magnetic noise of the alternator is reduced. In one aspect of the invention, an electrical machine has a stator core with a first and second and third plurality of slots. A first set of three-phase windings has a first winding, second winding, and a third winding. A second set of windings also has a first winding, a second winding and a third winding. A third set of windings also has a first winding, a second winding and a third winding. The first winding of the first set of three-phase windings and the first winding of the second set of three-phase windings and the first winding of the third set of three-phase windings are disposed in the first plurality of slots. The second winding of the first set of three-phase windings and the second winding of the second set of three-phase windings and the second winding of the third set of three-phase windings are disposed in the second plurality of slots. The third winding of the first set of three-phase windings and the third winding of the second set of three-phase windings and the third winding of the third set of three-phase windings are disposed in the third plurality of slots. The three sets of windings are grouped into three wye-connected winding connections, which are electrically coupled to each other.
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