Three-phase brushless motor

Details Three-phase brushless motor Three-phase brushless motor

1995-01-19

1997-10-28

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 2112

Patent

active

056820720

ABSTRACT:
A three-phase brushless motor includes a rotary shaft, a rotor fixed to an outer surface of the rotary shaft, and a drive coil of three phases disposed around the rotor. An outer surface of the rotor is magnetized to have alternately and equidistantly arrayed S and N poles and a plural number of low flux density regions are provided in a gap between the outer surface of the rotor and an inner surface of the drive coil.

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Patent Abstracts of Japan, Unexamined Applications, E field, vol. 17, No. 960, Aug. 23, 1993, The Patent Office Japanese Government, p. 87 E 1419; JP-A-05 103 453 (Toshiba).

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