Electric machine rotor having a laminated and segmented rim

Details Electric machine rotor having a laminated and segmented rim Electric machine rotor having a laminated and segmented rim

1983-03-25

1984-12-18

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310269, H02K 122

Patent

active

044892497

ABSTRACT:
A larger number of keys (L) are formed in the outer cylindrical surface of a rotor rim than is strictly necessary for fixing pole pieces (P) thereto. The keys are regularly spaced around the rim. This arrangement makes it possible to avoid having adjacent rim segments offset to each other by an angle which is equal to the pole pitch or at best to the half pole pitch as has previously been the case. The overlap between segments may now be at the pitch of the fixing keys. This can be used to increase the overlap factor, thereby increasing the mechanical strength of the rim against centrifugal forces.

REFERENCES:
patent: 3280355 (1966-10-01), Ruelle et al.
patent: 3307059 (1967-02-01), Kitano et al.
patent: 3488754 (1970-01-01), Hohnstein
patent: 4264836 (1981-04-01), Dukshtau et al.

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