Behavior of Aircraft Generating Systems with Pulsating Loads

Abstract

Aircraft generating systems are sometimes used in applications in which a large part, if not all, of the system load is pulsating--a load requiring repetitive pulses of current. One example of this type of load is a rectifier system feeding a resonant L-C charging circuit which is periodically charged and discharged. This type of load presents unique problems in the design of the generating system. This paper discusses the general behavior of a generating system with this type of pulsating-load and analyzes voltage and current wave shapes, equivalent generator load, effect of the load on voltage modulation and on voltage regulator design, and other factors. Test data for a model system is included.