Stator winding for two-speed electrodynamic machines having frac

Details Stator winding for two-speed electrodynamic machines having frac Stator winding for two-speed electrodynamic machines having frac

1987-10-27

1990-09-04

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310179, 310188, 310254, 318773, H02K 100

Patent

active

049547402

ABSTRACT:
A stator for electrodynamic machines provides for more efficient design by reducing the total number of stator legs required for two-speed, two-phase motors and for generators producing electrical power at either of two frequencies while operating at a constant speed. This is accomplished by external switching, so that at one condition, all coils on all stator legs are energized in the normal symmetrical pattern, while at the other condition, all coils on all stator legs are energized in a non-symmetrical pattern.

REFERENCES:
patent: 2041875 (1936-05-01), Stoller
patent: 2715204 (1955-08-01), Siskind
patent: 2820938 (1958-01-01), Davies
patent: 4733113 (1988-03-01), Smith
patent: 4792709 (1988-12-01), Smith
Frictional Horsepower Electric Moters; C. G. Veinott; McGraw Hill Book Co., Inc.; New York, Toronto, London; 1948; pp. 54-57, 98-101.

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