A.C. electric motors having a stator forming orthogonal magnetic paths
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United States of America Patent
Stats
-
Jul 19, 1988
Issued Date -
N/A
app pub date -
Jan 26, 1983
filing date -
Apr 28, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stator of an A.C. electric motor includes a magnetic core comprising a magnetic ring member and two 'U'-shaped magnetic members connected to the ring member. The two 'U'-shaped magnetic members hold the ring member therebetween and are angularly spaced from one another around the central axis of the ring member. A primary winding is wound on one of the two 'U'-shaped member and a secondary winding is wound on the other 'U'-shaped member. The secondary winding is short-circuited by a capacitor. When A.C. voltage is applied to the primary winding, A.C. voltage is induced on the secondary winding at a certain value or more of the primary voltage. A rotary flux is formed in the ring member by magnetic fluxes induced by primary and secondary A.C. currents. Accordingly, a cage rotor or magnet rotor which is rotatably disposed in the ring member can be rotated.
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