Field exerting and regulator circuit for a brushless alternator

Details Field exerting and regulator circuit for a brushless alternator Field exerting and regulator circuit for a brushless alternator

1978-04-19

1980-07-01

Hickey, Robert J.

Electricity: single generator systems

Automatic control of generator or driving means

Voltage of generator or circuit supplied

322 59, 322 72, H02P 926

Patent

active

042108578

ABSTRACT:
A field regulating circuit for a brushless alternator or the like in which a field winding is disposed on a rotor and energized from the secondary winding of a rotary transformer which has its primary winding connected to be energized from a circuit controlled by an oscillator and wherein the frequency of the oscillator is varied in response to a voltage sensing circuit providing a potential which varies with the output of the alternator, the output of the oscillator effecting the generation of first and second pulse trains with the trains being 180.degree. out of phase and effecting energization of the primary of the rotary transformer by current pulses of a fixed width with the current pulses caused by the first and second pulse trains flowing in different directions through the primary winding of the brushless transformer, the pulse trains have pulses of fixed duration which is substantially equal to a half period of the oscillation for the frequency of the oscillator for supplying full field current.

REFERENCES:
patent: 3374418 (1968-03-01), Henderson et al.
patent: 3526823 (1970-09-01), Genuit
patent: 3617857 (1971-11-01), Gunderson
patent: 3629689 (1971-12-01), Rifk

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