Direct-current brushless motor

Details Direct-current brushless motor Direct-current brushless motor

1983-02-25

1985-01-29

Truhe, J. V.

Electricity: motive power systems

Switched reluctance motor commutation control

310156, 310184, H02P 118

Patent

active

044968876

ABSTRACT:
A DC brushless motor wherein each of circular-arc pole shoes of a stator arranged facing a rotor having a cylindrical permanent magnet with N- and S-poles magnetized alternately around the circumference thereof has a narrow groove extending along almost half the length of the arc from one end thereof near the surface facing the permanent magnet. The permanent magnet provided for the rotor is constituted in such a manner that the radius of its surface facing the stator varies continuously over the length of arc of each pole shoe from one end thereof to the other.

REFERENCES:
patent: 3873897 (1975-03-01), Muller
patent: 3956678 (1976-05-01), Byrne et al.
patent: 4217508 (1980-08-01), Uzuka

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