Electrical synchronous machine with smooth poles and with a cons

Details Electrical synchronous machine with smooth poles and with a cons Electrical synchronous machine with smooth poles and with a cons

1995-04-25

1996-10-08

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 52, 310 61, H02K 900, H02K 132

Patent

active

055634605

ABSTRACT:
An electrical synchronous machine of the type with smooth poles and with a constant air gap, comprising a rotor (2) in which the coils are accommodated in notches (4) extending from the periphery of the rotor and which is provided with a device of axial and if need be radial ventilation channels (8) and (9) and wherein the notches (4) over a polar pitch are directed in parallel relation to the axis of the pole and their depth (a) is chosen so as to increase the cross-section of the central zone defined by the bottoms of the notches (4) and comprising axial ventilation channels (8).

REFERENCES:
patent: 675518 (1901-06-01), Merrick et al.
patent: 881647 (1908-03-01), Alexanderson
patent: 2708724 (1955-05-01), Martin et al.
patent: 2867760 (1959-01-01), Huggard et al.
patent: 3515916 (1970-06-01), Kovacs
patent: 4301386 (1981-11-01), Schweder et al.
patent: 4948996 (1990-08-01), Archibald et al.

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