Shock load stabilization circuit and voltage regulator having same

Abstract

An electronic voltage regulator for generators controlled by means of an exciter field current, comprises an average voltage sensing circuit connected to the output of the generator, a peak voltage sensing circuit connected to the output of the generator, an error signal circuit operatively connected to the average voltage sensing and the peak voltage sensing circuits effective to generate an error signal when the generator's average output voltage varies from a predetermined value or when the peak voltage exceeds a predetermined limit, an exciter field current control circuit operatively connected to the error signal circuit effective to control the generator field current in response to the error signal, and a shock load stabilization circuit operatively connected to the average voltage sensing circuit and to the peak voltage sensing circuit effective to disable the peak voltage sensing circuit upon sensing an application of a shock load to the generator. The shock load stabilization circuit comprises a shock load sense circuit effective to generate a control signal upon detection of a shock load application, a timed discharge circuit connected to the shock load sense circuit, effective to disable the peak voltage sensing circuit, and a re-trigger delay circuit interposed between the shock load sense circuit and the timed discharge circuit communicating the control signal to the timed discharge circuit upon its initial generation, and to disable communication of subsequently generated control signals until expiration of a predetermined time interval.

Dependencies are inferred from the claim text.