Rotor assembly for an electric machine having a coolant passage
First Claim
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1. A rotor assembly for an electric machine comprising:
- a non-lamination structure defining a core rotational about an axis of rotation and having multiple posts and at least one projection disposed between the multiple posts;
a winding wound around each of the multiple posts;
a winding seat located at an interface of the winding and each of the multiple posts, the winding seat spaced from the at least one projection, having at least two surfaces and defining an electrically isolating layer separating the winding from each of the multiple posts;
a lamination structure defining a cap coupled to each of the multiple posts, and having a portion overlying the winding to collectively define an axial extending winding slot with the core;
at least one internal coolant passage located internally of the core adjacent to and at least partially separated from the winding by the winding seat, wherein one of the at least two surfaces of the winding seat is adjacent to the portion of each of the multiple posts, and extends axially in parallel with the internal coolant passage;
a central coolant passage extending axially along the axis of rotation within the core; and
at least one radial coolant passage extending outward from the central coolant passage to fluidly couple the at least one coolant passage to the central coolant passage;
wherein adjacent caps coupled to each of the multiple posts are spaced from each other by a radial element coupled to the at least one projection.
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Abstract
A rotor assembly for an electric machine includes a core having at least one post and a cap wherein electrical windings are wound about the rotor assembly to define a pole. The rotation of the rotor and rotor pole relative to a stator generates a current supplied from the electric machine to a power consuming device.
32 Citations
16 Claims
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1. A rotor assembly for an electric machine comprising:
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a non-lamination structure defining a core rotational about an axis of rotation and having multiple posts and at least one projection disposed between the multiple posts; a winding wound around each of the multiple posts; a winding seat located at an interface of the winding and each of the multiple posts, the winding seat spaced from the at least one projection, having at least two surfaces and defining an electrically isolating layer separating the winding from each of the multiple posts; a lamination structure defining a cap coupled to each of the multiple posts, and having a portion overlying the winding to collectively define an axial extending winding slot with the core; at least one internal coolant passage located internally of the core adjacent to and at least partially separated from the winding by the winding seat, wherein one of the at least two surfaces of the winding seat is adjacent to the portion of each of the multiple posts, and extends axially in parallel with the internal coolant passage; a central coolant passage extending axially along the axis of rotation within the core; and at least one radial coolant passage extending outward from the central coolant passage to fluidly couple the at least one coolant passage to the central coolant passage; wherein adjacent caps coupled to each of the multiple posts are spaced from each other by a radial element coupled to the at least one projection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A rotor assembly for an electric machine comprising:
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a non-lamination structure defining a core rotational about an axis of rotation and having multiple posts and at least one projection disposed between the multiple posts and a central coolant passage extending axially along the axis of rotation; a winding wound around each of the multiple posts; a winding seat located at an interface of the winding and each of the multiple posts, the winding seat spaced from the at least one projection, having at least two surfaces and defining an electrically isolating layer separating the winding from each of the multiple posts; a lamination structure defining a cap coupled to each of the multiple posts and having a portion overlying the winding to collectively define an axial extending winding slot with the core; a channel adjacent the winding seat; and at least one radial coolant passage extending outward from the central coolant passage to fluidly couple the central coolant passage to the channel; wherein adjacent caps coupled to each of the multiple posts are spaced from each other by a radial element coupled to the at least one projection. - View Dependent Claims (13, 14, 15, 16)
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Specification