Support for an end winding of a rotor of a dynamo-electric machine
First Claim
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1. A dynamo-electric machine comprising:
- a. a rotor body;
b. an overhang region at an end of the rotor body;
c. an end-winding including a multiplicity of conductors which extend axially along the overhang region;
d. annular support means interposed between the said conductors of the end winding and the overhang region;
e. a plurality of annular members encircling said conductors at spaced positions along the overhang region to constrain the conductors against the effects of centrifugal force; and
f. at least one expansible device interposed between the encircling annular members and the conductors forming the end-winding, the expansible device being held in an expanded condition to prestress the annular members to a tensioned condition to clamp the conductors to the support means, and to an extent such that stretching of the annular members at the maximum speed of the rotor is substantially prevented.
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Abstract
A rotor of a dynamo-electric machine having the conductors forming an end-winding supported by an annular support arrangement interposed between an overhang region of the rotor body and the conductors forming the end winding. The annular support arrangement may comprise a single annular member or a plurality of separate members secured around the overhang region of the rotor body. The annular support arrangement may be formed from a non-magnetic metal of low density, for example, an aluminium alloy, or may be formed from a suitable insulating material, for example, a fibre reinforced composite material.
12 Citations
12 Claims
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1. A dynamo-electric machine comprising:
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a. a rotor body; b. an overhang region at an end of the rotor body; c. an end-winding including a multiplicity of conductors which extend axially along the overhang region; d. annular support means interposed between the said conductors of the end winding and the overhang region; e. a plurality of annular members encircling said conductors at spaced positions along the overhang region to constrain the conductors against the effects of centrifugal force; and f. at least one expansible device interposed between the encircling annular members and the conductors forming the end-winding, the expansible device being held in an expanded condition to prestress the annular members to a tensioned condition to clamp the conductors to the support means, and to an extent such that stretching of the annular members at the maximum speed of the rotor is substantially prevented. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification