Stator assembly with electrically balanced conductor layers

A stator assembly comprising:

• a plurality of stator slots having multiple respective slot layers;
• a plurality of hairpins having a respective first leg positioned in one of the multiple respective slot layers and a respective second leg positioned in another of the multiple respective slot layers, the plurality of hairpins being configured to allow a current to flow from the respective first leg to the respective second leg;
• wherein a first set of n adjacent slots of the plurality of stator slots is configured to accommodate the plurality of hairpins carrying the current in a first phase, n being an integer;
• wherein the plurality of hairpins is configured in respective conductor layers having a plurality of respective turn locations defining n respective turn positions characterized by a respective phase shifted voltage (vn);
• wherein the plurality of hairpins is configured to occupy the n respective turn positions an equal number of times such that the respective conductor layers are electrically balanced, the plurality of hairpins in the respective conductor layers having an equal total voltage V=(Σvi, i=1 to n);
• wherein the plurality of hairpins extends through the plurality of stator slots between a crown end and a weld end;
• at least one of the plurality of hairpins in the respective conductor layers is a nested conductor encapsulated by remaining ones of the plurality of hairpins at the crown end;
• wherein the plurality of hairpins in the respective conductor layers includes a first hairpin (C1), a second hairpin (C2), a third hairpin (C3) and a fourth hairpin (C4), the integer n having a value of three;
• and
• wherein the plurality of respective turn locations includes four respective turn locations configured as (C1, C2, C3), (C4, C1, C2), (C3, C4, C1) and (C2, C3, C4), respectively.

A stator assembly comprising:

• a plurality of stator slots having multiple respective slot layers;
• a plurality of hairpins having a respective first leg positioned in one of the multiple respective slot layers and a respective second leg positioned in another of the multiple respective slot layers, the plurality of hairpins being configured to allow a current to flow from the respective first leg to the respective second leg;
• wherein a first set of n adjacent slots of the plurality of stator slots is configured to accommodate the plurality of hairpins carrying the current in a first phase, n being an integer;
• wherein the plurality of hairpins is configured in respective conductor layers having a plurality of respective turn locations defining n respective turn positions;
• wherein the plurality of hairpins is configured to occupy the n respective turn positions an equal number of times such that the respective conductor layers are electrically balanced;
• wherein the plurality of hairpins in the respective conductor layers include a first hairpin (C1), a second hairpin (C2), a third hairpin (C3) and a fourth hairpin (C4), the integer n having a value of three;
• and
• wherein the plurality of respective turn locations includes four respective turn locations configured as (C1, C2, C3), (C4, C1, C2), (C3, C4, C1) and (C2, C3, C4), respectively.