Recessed rotation detectors for brushless motors

Details Recessed rotation detectors for brushless motors Recessed rotation detectors for brushless motors

1991-07-05

1992-09-15

Beha, Jr., William H.

Electrical generator or motor structure

Dynamoelectric

Rotary

310164, 310 905, H02K 2114, H02K 2914

Patent

active

051480697

ABSTRACT:
An electric motor includes at least a stator core carrying toroidal coils wound thereon, a magnet provided in opposition to the stator core so as to constitute a part of a rotor, and magnetic flux detection elements for detecting changes in magnetic polarity of the magnet so as to control a current flowing in the toroidal coils. The stator is provided with a select number of cut portions at its open end. The number of cut portions is not less than that of the magnetic flux detection elements. The winding positions of the toroidal coils are considered in order to maintain magnetic symmetry, the magnetic flux detection elements being provided in the cut portions.

REFERENCES:
patent: 4523800 (1985-06-01), Yamashita et al.
patent: 4547713 (1985-10-01), Langley et al.
patent: 4667137 (1987-05-01), Macleod
patent: 4734603 (1988-03-01), von der Heide et al.
patent: 4843270 (1989-06-01), Dijken
patent: 4882511 (1989-11-01), von der Heide

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