SYSTEMS AND METHODS FOR DIRECT WINDING COOLING OF ELECTRIC MACHINES
First Claim
1. A system for cooling an electric machine comprising a stator and one or more copper windings, the system comprising:
- one or more direct winding heat exchangers (DWHX) thermally coupled to the one or more copper windings, each DWHX comprising;
a coolant reservoir; and
a plurality of micro-features disposed inside the coolant reservoir;
wherein a coolant flows through the one or more DWHXs to provide direct cooling to the one or more copper windings.
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Accused Products
Abstract
A system and method for cooling electric machines using direct winding heat exchangers (DWHX) is disclosed. The system can comprise a plurality of DWHXs disposed in thermal communication with a plurality of copper windings in the stator of an electric machine for cooling the plurality of copper windings. The plurality of DWHXs can also be in fluid communication with one or more fluid manifolds for providing coolant to the plurality of DWHXs. The one or more manifolds can be in fluid communication with one or more heat reservoirs for rejecting the heat absorbed by the plurality of DWHXs. The heat reservoir can be an internal system radiator or an infinite reservoir such as a cooling pond. The method can comprise a design tool for optimizing a DWHX cooling system utilizing the internal system radiator or an infinite reservoir, among other things.
25 Citations
17 Claims
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1. A system for cooling an electric machine comprising a stator and one or more copper windings, the system comprising:
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one or more direct winding heat exchangers (DWHX) thermally coupled to the one or more copper windings, each DWHX comprising; a coolant reservoir; and a plurality of micro-features disposed inside the coolant reservoir; wherein a coolant flows through the one or more DWHXs to provide direct cooling to the one or more copper windings. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for cooling an electric machine comprising a stator, one or more end caps, a frame, and one or more copper windings, the system comprising:
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one or more direct winding heat exchangers (DWHX) thermally coupled to the one or more copper windings for providing direct cooling to the one or more copper windings; an inlet plenum in fluid communication with the one or more DWHXs for providing coolant to the one or more DWHXs; an outlet plenum in fluid communication with the one or more DWHXs for removing coolant from the one or more DWHXs; and a heat reservoir, in fluid communication with the inlet manifold and outlet manifold, for rejecting heat transferred to the coolant from the one or more DWHXs. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification