Stator core end magnetic shield for large A.C. machines

Details Stator core end magnetic shield for large A.C. machines Stator core end magnetic shield for large A.C. machines

1976-02-27

1977-10-18

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 112

Patent

active

040548090

ABSTRACT:
A magnetic shield to reduce stator core end heating in an A.C. machine, which may also serve as a support structure for the end-turns of the stator windings, is formed of small-diameter iron wire circumferentially wound in a matrix of fiberglass impregnated with epoxy. The iron wire provides a low magnetic reluctance path in the circumferential direction at the core end. The higher reluctance path provided by the shield in the axial direction reduces the axial magnetic flux penetrating the core end. The wire and epoxy-impregnated fiberglass matrix may also constitute a high strength support for the end-turns.

REFERENCES:
patent: 1677004 (1928-07-01), Pohl
patent: 1689187 (1928-10-01), Pohl
patent: 3100271 (1963-08-01), Darrieus
patent: 3114063 (1963-10-01), Karsten
patent: 3665234 (1972-05-01), Bishop
patent: 3691416 (1972-09-01), Drexler
patent: 3714477 (1973-01-01), Gott
patent: 3731127 (1973-05-01), Harrington

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