Preformed coil for an electric machine having a perforated insulating body and method of making same
AssigneeVestas Wind Systems A/S
InventorsAnoop Jassal, Xiaowei Song, Torben Werge Møller
Life of this patent
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Abstract
A coil for an electric machine including a conductive strand having a first end, a second end, and a plurality of windings between the first and second ends and an electric insulating body within which the conductive strand is at least partially encased, wherein at least a portion of the insulating body includes perforations that allow a coolant to penetrate into the insulating body to cool the coil during use of the electric machine. A method of making the coil includes molding or printing the insulating body about the conductive strand so as to have perforations therein.
Claims19
A coil for an electric machine, comprising:
- a conductive strand having a first end, a second end, and a plurality of windings between the first and second ends;
- and
- an electric insulating body within which the conductive strand is at least partially encased,
- wherein at least a portion of the electric insulating body includes perforations to establish fluid communication of a coolant with the electric insulating body to cool the coil during use of the electric machine, and
- wherein the electric insulating body is a porous body, formed from a honeycomb or lattice structure or a foam material, and the perforations include a plurality of flow channels formed by pores in the porous body.
A method of making a coil for an electric machine, comprising:
- providing a conductive strand having a first end, a second end, and a plurality of windings between the first and second ends;
- and
- forming an insulating body around at least a portion of the conductive strand, wherein at least a portion of the insulating body includes perforations that allow a coolant to penetrate into the insulating body to cool the coil during use of the electric machine, and
- wherein the insulating body is a porous body, formed from a honeycomb or lattice structure or a foam material, and the perforations include a plurality of flow channels formed by pores in the porous body.
An electric machine, comprising:
- a plurality of coils, each coil comprising:
- a conductive strand having a first end, a second end, and a plurality of windings between the first and second ends;
- and
- an electric insulating body within which the conductive strand is at least partially encased,
- wherein at least a portion of the electric insulating body includes perforations to establish fluid communication of a coolant with the electric insulating body;
- and
- a cooling system for directing the coolant to the plurality of coils for removing heat from the coils during use of the electric machine, and
- wherein the electric insulating body is a porous body, formed of a foam material, and the perforations include a plurality of flow channels formed by pores in the porous body.
A wind turbine, comprising:
- a tower;
- a nacelle disposed on the tower;
- a wind turbine generator disposed in the nacelle, the wind turbine generator comprising:
- a plurality of coils, each coil comprising:
- a conductive strand having a first end, a second end, and a plurality of windings between the first and second ends;
- and
- an electric insulating body within which the conductive strand is at least partially encased,
- wherein at least a portion of the electric insulating body includes perforations to establish fluid communication of a coolant with the electric insulating body;
- and
- a cooling system for directing the coolant to the plurality of coils for removing heat from the coils during use of the wind turbine generator, and
- wherein the electric insulating body is a porous body, formed from a honeycomb or lattice structure, and the perforations include a plurality of flow channels formed by pores in the porous body.
Dependencies are inferred from the claim text.