| CPC H02K 3/18 (2013.01) [H02K 1/146 (2013.01); H02K 9/22 (2013.01); H02K 15/095 (2013.01)] | 13 Claims |
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1. A stator assembly for an electric machine, the assembly comprising:
a stator body including a base portion and a plurality of stator teeth projecting radially inward from the base portion towards a longitudinal axis of a rotor;
a first electrically conductive member wound about a first tooth of the plurality of stator teeth to define a first winding about the first tooth, the first winding comprising a single layer of the first electrically conductive member and including a plurality of turns of the first electrically conductive member,
wherein the first electrically conductive member has a thickness in the radial direction that is less than its width in a direction perpendicular to the radial direction;
a second electrically conductive member wound about a second tooth of the plurality of stator teeth to define a second winding about the second tooth, the second winding comprising a single layer of the second electrically conductive member and including a plurality of turns of the second electrically conductive member,
wherein the second electrically conductive member has a thickness in the radial direction that is less than a width of the second electrically conductive member in a direction perpendicular to the radial direction,
wherein the first tooth and the second tooth are adjacent to each other, wherein the first and second electrically conductive members define a slot fill factor greater than or equal to about 40 percent,
wherein a width of each of the plurality of turns of the first electrically conductive member increases in a first circumferential direction from a distal portion of the first tooth to a proximal portion of the first tooth adjacent the base portion and a width of each of the plurality of turns of the second electrically conductive member increases in a second circumferential direction from a distal portion of the second tooth to a proximal portion of the second tooth adjacent the base portion such that a slot between the first tooth and the second tooth is substantially filled,
wherein a thickness in the radial direction of each of the plurality of turns of the first and second electrically conductive members increases from the proximal portions of the first tooth and the second tooth adjacent the base portion to the distal portions of the first tooth and the second tooth;
a thermally conductive member in thermal contact with an entire radial length of the first electrically conductive member at a longitudinal end face of the first winding; and
an end bell, wherein a longitudinal end face of the thermally conductive member is in thermal contact with the end bell.
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