Driving apparatus for brushless motor

Details Driving apparatus for brushless motor Driving apparatus for brushless motor

1988-06-16

1990-02-13

Ro, Bentsu

Electricity: motive power systems

Switched reluctance motor commutation control

318138, H02P 602

Patent

active

049009931

ABSTRACT:
A phase difference between a counter-electromotive voltage induced in a driving coil and a voltage which is applied to the driving coil is detected by comparison of a terminal voltage of the driving coil and a reference voltage. A frequency of a voltage-control oscillator which controls switching of the voltage applied to the driving coil is varied by an output signal made by the comparison, and the phase difference is controlled to be reduced to zero.

REFERENCES:
patent: 4233548 (1980-11-01), Kirtley
patent: 4250435 (1981-02-01), Alley et al.
patent: 4295085 (1981-10-01), Lafuse
patent: 4595865 (1986-06-01), Jahns
patent: 4603283 (1986-07-01), Oltendorf
patent: 4673849 (1987-06-01), Sears et al.
patent: 4712050 (1987-12-01), Nagasawa et al.

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