Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1988-05-24
1989-05-16
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310184, 310254, 310261, H02K 100
Patent
active
048313017
ABSTRACT:
A dynamo-electric machine including a stator core fixed in a casing and formed of stator lamination plates, and a rotor supported in a bore of the stator core and formed of a stack of rotor lamination plates. Each stator lamination plate has a tooth portion extending radially outward from the bore to an intermediate circumference, and yoke portion defined between the intermediate circumference and the outer periphery of the stator lamination plate. Each of the rotor lamination plates has a number of equally circumferentially spaced closed slots, wherein each slot is in the form of a double squirrel cage arrangement. In an embodiment, the teeth of the stator lamination plates are sufficiently wide relatively to the area of stator slot openings so that the ratio of flux density in the tooth portion to flux density in the yoke portion is optimized for a given n-pole operating configuration of the stator winding. The rotor winding matches the stator winding to provide the proper interaction with the stator winding and likewise to provide a high ratio of lamination material as compared to the winding material.
REFERENCES:
patent: 2528154 (1950-10-01), Ludwig
patent: 2794138 (1957-05-01), Dunn, Jr.
patent: 3122667 (1964-02-01), Baciu
patent: 3401280 (1968-09-01), Lackey
patent: 4209720 (1980-06-01), Ducrot
patent: 4566179 (1986-01-01), Sawyer
Part 4; "Dimensions, Tolerances, and Mounting", pp. 1, 5, 6; MG 1-1987; ANSI/NEMA Standards.
Part II; "Dimensions-AC and DC Small and Medium Machines", pp. 1, 2; MG 1-1987.
General Electric Company
Krisher, Jr. Ralph E.
Skudy R.
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