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Alternator stator having a multiple filar construction to improve convective cooling

  • US 6,930,426 B2
  • Filed: 11/26/2003
  • Issued: 08/16/2005
  • Est. Priority Date: 11/26/2003
  • Status: Expired due to Term
First Claim
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1. A stator for a dynamoelectric machine, comprising:

  • a stator core having a generally cylindrical shape, the stator core having a plurality of circumferentially spaced slots, a stator winding including a plurality of conductors, each conductor having a plurality of straight segments interconnecting a plurality of end loop segments;

    the plurality of conductors organized into at least a first filar and a second filar, the plurality of conductors organized into multiple phases defined by a circumferential pitch, each phase having a conductor in the first filar and a conductor in the second filar;

    the plurality of conductors organized into layers, each layer representing a set of equidistant radial positions in the slots filled by the straight segments of the conductors;

    the end loop segments of the first and second filars being circumferentially aligned and axially opposite each other;

    the straight segments of corresponding conductors of the first and second filars residing in common slots in the stator core;

    the straight segments of one phase being positioned in the same layer as adjacent straight segments in the adjacent phase; and

    the plurality of conductors arranged in a cascading structure defined by at least three consecutive straight segments of one turn of one conductor residing in a common layer.

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