Stator slot and winding arrangements

Electrical generator or motor structure – Dynamoelectric – Rotary

Patent

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Details

310185, 310188, H02k 1728

Patent

active

RE0287059

ABSTRACT:
A stator, for use in an alternating current motor, includes a core having a plurality of angularly spaced slots. A distributed main winding is concentrically arranged in a plurality of the slots, with these slots encompassing a first arcuate region of the core, less than its circumference. End turns for the main winding are positioned adjacent an end face of the first arcuate region of the core. This provides a second arcuate region of at least one end face of the core free of the main winding. In a first embodiment, an auxiliary winding, displaced in phase from the main winding, is received in a plurality of the slots, including at least some slots in the second arcuate region. In the first embodiment, end turns of the auxiliary winding in the second arcuate region are disposed inwardly of the radially outermost edges of the slots in the second arcuate region along at least one end face of the core. In a second embodiment, the second arcuate region of one end face of the core is free of both the auxiliary winding and the main winding.

REFERENCES:
patent: 1334831 (1920-03-01), Bergman
patent: 2206308 (1940-07-01), Schurch
patent: 2328497 (1943-08-01), Romine
patent: 2498704 (1950-02-01), Oswald
patent: 2649561 (1953-08-01), Hutchins
patent: 3062978 (1962-11-01), Smith
patent: 3207935 (1965-09-01), Mosousky et al.
patent: 3235762 (1966-02-01), Brammerlo
patent: 3421033 (1969-01-01), Hoffmeyer
patent: 3421034 (1969-01-01), Hershberger
patent: 3439205 (1969-04-01), Houtman
patent: 3515919 (1970-06-01), Houtman

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