Generator rotor with improved wedges
AssigneeHamilton Sundstrand Corporation
InventorsRoy D. Rasmussen, Scott R. Ganong, Glenn C. Lemmers, JR.
Life of this patent
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Abstract
A wedge for use in a generator rotor includes a wedge body having a generally triangular shape with flat surfaces, and such that when the wedge is placed in a generator rotor, the flat surfaces will define circumferential extents of the wedge body relative to a rotational axis of the rotor, and said flat surfaces extending to a radially outermost extent of the wedge body. A wedge and winding combination, a generator rotor, a generator and a method all using the wedges are disclosed and claimed.
Claims20
A wedge for use in a generator rotor comprising:
- a wedge body having a generally triangular shape with flat surfaces, and such that when the wedge is placed in a generator rotor, the flat surfaces will define circumferential extents of the wedge body relative to a rotational axis of the rotor;
- and
- said flat surfaces extending to a radially outermost extent of the wedge body.
A wedge and winding combination for use in a generator rotor comprising:
- a wedge body having a generally triangular shape with flat surfaces, and such that when the wedge is placed in a generator rotor, the flat surfaces will define circumferential extents of the wedge body relative to a rotational axis of the rotor, and said flat surfaces extending to a radially outermost extent of the wedge body;
- and
- a pair of windings with said flat surfaces contacting a mating flat surface on each said winding.
A generator rotor comprising:
- a main lamination stack defining an axis;
- pairs of circumferentially spaced windings;
- wedges placed circumferentially between each said pair of windings, said wedges including a wedge body having a generally triangular shape with flat surfaces, said flat surfaces defining circumferential extents of the wedge body relative to the axis of the rotor, and said flat surfaces extending to a radially outermost extent of the wedge body;
- and
- said flat surfaces of said wedges sitting radially outwardly of surfaces on said windings to provide support for said windings, and said flat surfaces of said wedges also sitting radially outwardly of mating surfaces on said main lamination stack.
A generator comprising:
- a stator;
- and
- a rotor including a main lamination stack defining an axis, pairs of circumferentially spaced windings, wedges placed circumferentially between each said pair of windings, said wedges including a wedge body having a generally triangular shape with flat surfaces defining circumferential extents of the wedge body, and said flat surfaces extending to a radially outermost extent, said flat surfaces of said wedges sitting radially outwardly of surfaces on said windings to provide support for said windings, and said flat surfaces of said wedges also sitting radially outwardly of mating surfaces on said main lamination stack.
A method of forming a generator rotor for an electrical generator comprising the steps of:
- (a) defining a main lamination stack, said main lamination stack having openings spaced circumferentially about a central axis of said main lamination stack;
- (b) placing opposed pairs of circumferentially spaced windings within said openings in said main lamination stack;
- and
- (c) defining a generally triangular wedge body, and inserting said wedge body circumferentially intermediate each winding in each pair of said windings, and said wedge being designed to have surfaces which sit radially outwardly of said windings and surfaces of said main lamination stack which define said opening such that said wedges define a radial support surface for said main lamination stack, and said windings.
Dependencies are inferred from the claim text.