Amortisseur bar with improved interface between free conductor b

Details Amortisseur bar with improved interface between free conductor b Amortisseur bar with improved interface between free conductor b

1983-09-27

1984-06-05

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310212, 310261, 310162, 310197, 310269, H02K 306

Patent

active

044531010

ABSTRACT:
An end portion of a free conductor bar of a pole-face winding for the rotor of a large dynamoelectric machine includes a flat at its radially outermost extremity. The end fits loosely within an oversized hole in an amortisseur ring. The presence of the flat displaces the contact line between the end portion and the hole from a thin bridge region of the amortisseur ring to two lines of contact displaced inward into the body of the material of the amortisseur ring. The reduced contact force and the repositioning of the contact location avoids cracking in the amortisseur rings of large dynamoelectric machines.

REFERENCES:
patent: 2499390 (1950-03-01), Joy
patent: 2844748 (1958-07-01), Hutchins
patent: 3401280 (1968-09-01), Lackey et al.
patent: 3521098 (1970-07-01), Jesse
patent: 3902087 (1975-08-01), Hakamada et al.
patent: 4249098 (1981-02-01), Karlen et al.

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