Electrical machine
First Claim
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1. A segment for supporting electromagnetic coupling elements of a stator or rotor of an electrical machine, comprising:
- a plurality of elongate laminations which are stacked in a first direction to form a lamination stack with elongate edges of the laminations defining opposite first and second major faces of the lamination stack; and
a plurality of elongate compression devices passing internally through the lamination stack in the first direction and arranged to compress together the laminations in the lamination stack;
wherein each elongate compression device comprises;
a central rod portion having first and second ends;
first and second anchor portions at respective ones of the first and second ends of the central rod portion; and
first and second collars fitted to respective ones of the first and second anchor portions; and
wherein each anchor portion is of larger diameter than the adjacent part of the central rod portion.
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Abstract
A segment for supporting electromagnetic coupling elements of a stator or rotor of an electrical machine comprises a plurality of elongate laminations which are stacked in a first direction to form a lamination stack with elongate edges of the laminations defining opposite first and second major faces of the lamination stack. The segment comprises a plurality of elongate compression devices passing internally through the lamination stack in the first direction and arranged to compress together the laminations in the lamination stack.
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Citations
25 Claims
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1. A segment for supporting electromagnetic coupling elements of a stator or rotor of an electrical machine, comprising:
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a plurality of elongate laminations which are stacked in a first direction to form a lamination stack with elongate edges of the laminations defining opposite first and second major faces of the lamination stack; and a plurality of elongate compression devices passing internally through the lamination stack in the first direction and arranged to compress together the laminations in the lamination stack; wherein each elongate compression device comprises; a central rod portion having first and second ends; first and second anchor portions at respective ones of the first and second ends of the central rod portion; and first and second collars fitted to respective ones of the first and second anchor portions; and wherein each anchor portion is of larger diameter than the adjacent part of the central rod portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of installing a compression device, comprising the steps of:
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providing a lamination stack having laminations stacked in a first direction and a slot extending longitudinally in the first direction; providing a compression device comprising a central rod portion having first and second anchor portions at respective first and second ends of the central rod portion; inserting the compression device into the slot; applying tension to the compression device to lengthen the central rod portion; fitting first and second collars respectively to the first and second anchor portions; and releasing the applied tension to cause the collars to apply a compressive force to the lamination stack; and wherein each anchor portion is of larger diameter that the adjacent part of the central rod portion. - View Dependent Claims (24, 25)
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Specification