Method and apparatus for reducing dynamo-electric machine vibration
AssigneeGeneral Electric Canada Inc.
InventorBradley Graham Moore
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Abstract
A method of fabricating a dynamo-electric machine rotor is provided. The method includes forming a plurality of laminations, such that a plurality of openings extend through the laminations between an outer peripheral edge and an inner peripheral edge arcuately spaced about the lamination wherein each opening includes an edge with a tongue that extends into the opening, stacking the laminations to form a core wherein adjacent opening are substantially aligned to form a slot in the core and filling the core slots with rotor bar material.
Claims45
A method of fabricating a dynamo-electric machine rotor, said method comprising:
- forming a plurality of laminations, such that a plurality of openings extend through the laminations between an outer peripheral edge and an inner peripheral edge of the laminations, and such that the openings are arcuately spaced about the lamination, wherein each opening has an edge having a tongue including a fixed end and a distal end, wherein each tongue extends each opening;
- stacking the laminations to form a core wherein adjacent openings are substantially aligned to form a slot in the core;
- and
- filling each core slot with rotor bar material.
A lamination configuration for use in a rotor core of a dynamo-electric machine, the lamination configuration comprising:
- a unitary body fabricated from a ferromagnetic material, said body comprising:
- an outer peripheral edge;
- an inner peripheral edge spaced radially from said outer peripheral edge;
- and
- a plurality of openings that extend through said body between said outer peripheral edge and said inner peripheral edge of the body such that said openings are arcuately spaced about said body, said openings each comprising an edge, said edge comprising a tongue, said tongue comprising a fixed end and a distal end, said tongue extending from said edge into said opening.
A rotor configuration for use in a dynamo-electric machine, said rotor comprising:
- a rotor core comprising a stack of laminations comprising a peripheral portion interposed between a first end face and a second opposing end face, said laminations comprising a plurality of openings each comprising an edge, said edge comprising a tongue comprising a fixed end and a distal end, said tongue extending from said edge into said opening, said laminations stacked to form a core, said openings substantially aligned to form a slot in said core, said slot extending from said first end face to said second end face;
- and
- a plurality of conductive rotor bars comprising a first end and a second end, said bars mounted in said rotor slots wherein said slot tongue distal ends are resiliently displaced away from said bars biasing said bars in a direction toward said peripheral portion.
Dependencies are inferred from the claim text.