Stator construction for high performance rotating machines

A rotating machine comprising:

• a stator having a plurality of field winding slots;
• a plurality of field windings disposed in each of the field winding slots, at least two of the field windings are comprised of:
• an outer jacket;
• and
• a plurality of conductive wires disposed within and enclosed by the outer jacket such that longitudinal passages are defined therebetween;
• and
• circulation means for circulating a coolant into and from the rotating machine through the longitudinal passages, wherein the conductive wires are wound within the outer jacket to form helical shaped longitudinal passages.

A rotating machine comprising:

• a stator having a plurality of field winding slots;
• a plurality of field windings disposed in each of the field winding slots, at least two of the field windings are comprised of:
• an outer jacket;
• and
• a plurality of conductive wires disposed within and enclosed by the outer jacket such that longitudinal passages are defined therebetween;
• circulation means for circulating a coolant into and from the rotating machine through the longitudinal passages;
• and
• a housing, the housing having a cavity for acceptance of the stator therein, the housing and stator defining first and second plenums at first and second ends of the stator, the coolant entering the rotating machine into the first plenum and exiting the rotating machine from the second plenum, wherein the at least two field windings having the longitudinal passages further having an exit hole in the outer jacket which provides communication between the longitudinal passages and the second plenum, the coolant leaving the longitudinal passages through the exit hole into the second plenum for re-circulation into the first plenum, the first and second plenums being connected with an external conduit.

A rotating machine comprising:

• a stator having a plurality of field winding slots;
• a plurality of field windings disposed in each of the field winding slots, at least two of the field windings are comprised of:
• an outer jacket;
• and
• a plurality of conductive wires disposed within and enclosed by the outer jacket such that longitudinal passages are defined therebetween;
• circulation means for circulating a coolant into and from the rotating machine through the longitudinal passages;
• and
• a housing, the housing having a cavity for acceptance of the stator therein, the housing and stator defining first and second plenums at first and second ends of the stator, the coolant entering the rotating machine into the first plenum and exiting the rotating machine from the second plenum, wherein the at least two field windings having the longitudinal passages further having at least one entry hole in the outer jacket providing communication between the longitudinal passages and the first plenum and at least one exit hole in the outer jacket providing communication between the longitudinal passages and the second plenum, wherein the coolant enters the longitudinal passages from the first plenum through the at least one entry hole and exits into the second plenum through the at least one exit hole.