AC winding with integrated cooling system and method for making the same
First Claim
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1. A winding of an electric machine comprising:
- at least one series of serially connected AC bars, each AC bar comprising;
a series of serially connected turns formed by litz wire having a plurality of strands; and
at least one cooling tube, wherein individual strands of the plurality of strands are respectively positioned substantially adjacent to the at least one cooling tube at at least one transfer point for providing heat transfer from the respective individual strands to the at least one cooling tube.
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Abstract
A winding of an electric machine is provided, where the winding includes at least one series of serially connected AC bars. Each AC bar includes a series of serially connected turns formed by litz wire having a plurality of strands, and at least one cooling tube. Individual strands of the plurality of strands are respectively positioned substantially adjacent to the at least one cooling tube at at least one transfer point for providing heat transfer from the respective individual strands to the at least one cooling tube.
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Citations
20 Claims
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1. A winding of an electric machine comprising:
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at least one series of serially connected AC bars, each AC bar comprising; a series of serially connected turns formed by litz wire having a plurality of strands; and at least one cooling tube, wherein individual strands of the plurality of strands are respectively positioned substantially adjacent to the at least one cooling tube at at least one transfer point for providing heat transfer from the respective individual strands to the at least one cooling tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electric machine having an AC winding comprising:
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at least one series of serially connected AC bars, each AC bar comprising; a series of serially connected turns formed by litz wire having a plurality of strands; and at least one cooling tube, wherein individual strands of the plurality of strands are respectively positioned substantially adjacent to the at least one cooling tube at at least one transfer point for providing heat transfer from the respective individual strands to the at least one cooling tube.
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13. A winding of an electric machine comprising:
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at least one series of serially connected AC bars, each AC bar comprising; a series of serially connected turns including at least one conductor; at least one cooling tube having a cooling medium flowing through a conduit having a thermally conductive surface; and a phase to ground insulation for providing electrical phase to ground insulation for the AC bar, wherein the phase to ground insulation surrounds the series of serially connected turns and the at least one cooling tube; wherein respective turns of the series of turns contact the at least one cooling tube for transferring heat from the respective turns to the at least one cooling tube, wherein at each point of contact the phase to ground insulation does not intervene between the conductive surface of the at least one cooling tube and a respective conductor of the at least one conductor. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification