Patent ID: 8134344

Claim:
A regulator control apparatus for use with a variable frequency generator having a field winding, comprising: a voltage regulator supplying a low frequency drive pulse-width modulated voltage signal produced from a voltage input received from a first voltage source; a duty cycle controller supplying a high frequency pulse-width modulated voltage signal produced from a voltage input received from a second voltage source; an AND gate for receiving the low and high frequency pulse-width modulated voltage signals and for modulating the high frequency pulse-width modulated voltage signal with the low frequency pulse-width modulated voltage signal to produce a combined drive signal representing an average voltage signal for supply to the field winding; a digital processor for controlling the high frequency pulse-width modulated signal; and a load current sensor for detecting a transient load on the variable frequency generator and controlling the processor to adjust a duty cycle of the high frequency pulse-width modulated signal to produce an adjusted average voltage from the combined drive signal.