Control circuit for a half-wave brushless motor with a surge lim

Details Control circuit for a half-wave brushless motor with a surge lim Control circuit for a half-wave brushless motor with a surge lim

1992-10-01

1994-03-01

Shoop, Jr., William M.

Electricity: motive power systems

Switched reluctance motor commutation control

318439, 318138, H02K 2300

Patent

active

052911055

ABSTRACT:
A control circuit for a half-wave brushless motor. The control circuit includes n circuit branches, each with an electronic power switch connected in series with the respective winding or phase of the motor across the terminals of a voltage source in parallel to the other n-1 circuit branches, a pilot circuit for providing enabling signals to render the power switches selectively conductive, current recirculation elements for dissipating transient current that flows in each phase of the motor whenever the associated power switch is turned off, and a voltage limiter for limiting, to a predetermined threshold voltage, the voltage surge due to the transient current.

REFERENCES:
patent: 4558264 (1985-12-01), Weischedel
patent: 4879498 (1989-11-01), Shinohara et al.
patent: 5055751 (1991-10-01), MacKelvie
patent: 5115174 (1992-05-01), Masuda et al.
patent: 5166583 (1992-11-01), Min et al.
patent: 5198733 (1993-03-01), Wright
Electronic Design, vol. 32, No. 9, Apr. 14, 1988, pp. 78-94.

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