Electric motor having three-layer winding structure

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9923426
APP PUB NO 20160218580A1
SERIAL NO

15006247

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In a three-phase AC electric motor, in each slot, any or some of the windings of six phases in total, including three phases of U, V, and W phases and opposite phases thereof, are arranged in three layers per slot. As the windings in first layers, of the three-layer windings, U, V, and W-phase windings are arranged so as to have rotational symmetry with one another at a mechanical angle of ±120 degrees. The windings in second layers have the same arrangement as in the first layers shifted by L slots, and the windings in third layers have the same arrangement as in the first layers shifted by L slots in a direction opposite to the arrangement of the windings in the second layers.

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Patent Owner(s)

  • FANUC CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ito, Takashi Yamanashi, JP 577 7473

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