Three-phase brushless DC motor

Details Three-phase brushless DC motor Three-phase brushless DC motor

1975-09-05

1977-05-24

Rubinson, Gene Z.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318439, H02K 2304

Patent

active

040258351

ABSTRACT:
A three-phase brushless DC motor has three power transistors with their collector-emitter paths connected to the respective stator windings, and two Hall effect devices each having a pair of control current electrodes and a pair of Hall voltage electrodes. One of the Hall voltage electrodes of the Hall effect devices is connected to the base electrodes of the first and second power transistors and the other Hall voltage electrodes are connected together by a combining network which delivers a resultant voltage to the base electrode of the third power transistor. A voltage dividing and balancing network is connected between the base electrodes of the first and second transistors and between the control current electrodes of the Hall effect devices to drive the stator windings with three-phase commutating currents of equal amplitude.

REFERENCES:
patent: 3440506 (1969-04-01), Krestel et al.
patent: 3517289 (1970-06-01), Brunner et al.
patent: 3651368 (1972-03-01), Hanada
patent: 3757185 (1973-08-01), Brunner et al.
patent: 3930190 (1975-12-01), Liska

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