A Highly Reliable DC Power Source for Avionic Subsystems

A highly reliable alternative source for aircraft +28Vdc power is presented. This alternative uses a permanent magnet generator (PMG) and an electronic converter/regulator (C/R). The power system includes such features as independence from the main power system, high power quality with terminal or remote point of regulation (POR), light weight, and constant power availability from engine idle to maximum rpm. Included is a brief system description, a review of steady state and transient performance, and a conclusion with a perspective on future expectations.