Stator for electric machine
AssigneeCaterpillar Inc.
InventorsRodwan T. Adra, William J. Hardin, Zakdy Sorchini
Life of this patent
Estimating the term…
Abstract
An electric machine having a stator, the stator including a stator core of substantially annular shape. The stator core includes a plurality of stator poles protruding in a radial direction. A stator winding is wound around each of the stator poles. The stator winding have multiple coils and an end turn positioned at each axial end. Further, the stator winding having a gap defined between adjacent coils at the end turns to allow a cooling fluid to pass through.
Claims20
A stator comprising:
- a stator core having a plurality of stator poles protruding in a radial direction;
- a stator winding wound around each of the stator poles, the stator winding having multiple coils and an end turn positioned at each axial end thereof;
- and
- a gap provided between adjacent coils at the end turns to allow a cooling fluid to pass.
An electric machine comprising:
- a stator core having a plurality of stator poles protruding in a radial direction;
- a rotor core having a plurality of rotor poles protruding in the radial direction;
- a stator winding wound around each of the stator poles, the stator winding having multiple coils and an end turn positioned at each axial end thereof;
- and
- a gap provided between adjacent coils at the end turns to allow a cooling fluid to pass.
A method of cooling an electric machine having a stator, the stator having a stator winding disposed over a stator pole, the stator winding having multiple coils, the method comprising:
- defining gaps between the adjacent coils;
- and
- passing a cooling fluid over the stator, the cooling fluid impinging on inner faces of the coils by flowing through the gaps.
Dependencies are inferred from the claim text.