Stator winding providing magnetomotive force wave of reduced har

Electrical generator or motor structure – Dynamoelectric – Rotary

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310198, 310204, 310206, H02K 300

Patent

active

044928904

ABSTRACT:
A stator winding configuration employs graded, overlapping stator winding coil groups. The outer coils of the coil group have a reduced number of turns with respect to the center coil or coils of the group. The coil groups have an expanded coil group width. The outer coils of adjacent, expanded width coil groups are overlapped by placing the reduced turn outer coils in common slots in the stator core.

REFERENCES:
patent: 3325661 (1967-06-01), Parsons
patent: 3515922 (1970-06-01), Fong
patent: 3600619 (1971-08-01), Tiarks
patent: 3794870 (1974-02-01), Broadway
patent: 4013909 (1977-03-01), Broadway
patent: 4158788 (1979-06-01), Godwin
patent: 4394596 (1983-07-01), Kimura
patent: 4409507 (1983-10-01), Godwin
Puchstein et al., Alternating Current Machines, pp. 24-27, Wiley & Sons, New York.
Dawes, A Course in Electrical Engineering; pp. 262-265; McGraw-Hill, New York, 1937.
Liwschitz-Garik et al., Electric Machinery, pp. 106-113, Van-Nostrand Co., New York.
Still et al., Elements of Electrical Machine Design; pp. 180-186, McGraw Hill, New York, 1954.
McFarland, A. C. Machines, pp. 254-260, Van Nostrand Co., New York, 1948.
Winding Alternating Current Machines by Liwschitz-Garik & Gentilini, Datarule Pub. Co., New Canaan, Conn., 1975.

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