Brushless motor

Details Brushless motor Brushless motor

1985-11-21

1986-10-14

Shoop, Jr., William M.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318439, H02K 2900

Patent

active

046174990

ABSTRACT:
A brushless motor comprises a magnet having a plurality of pole faces, a plurality of conductors mounted adjacent to the pole faces, and a plurality of phase coils connected together at a neutral point. The magnet is included in the motor rotor and the phase coils are included in the motor stator. A high-frequency signal source supplies a high-frequency signal to the neutral point, whereby changes in eddy current loss and thus the position of the rotor with respect to the stator are detected.

REFERENCES:
patent: 4004202 (1977-01-01), Davis
patent: 4158795 (1979-06-01), Tarumi et al.
patent: 4358720 (1982-11-01), Abe
patent: 4417167 (1983-11-01), Ishii et al.

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