Power Quality Enhancement by DC Distribution

Abstract

Most of the electric equipment used in residential buildings operate with electric energy in the form of direct current (dc) in their internal circuits. The advent of many modern equipment in residential buildings which operate on dc has necessitated an in-depth study of their impact on the distribution system. This paper presents an analysis of the performance of distribution system if these appliances are directly supplied by dc. As a part of this investigation a prototype conventional alternating current (ac) distribution system is analysed for different combinations of utility and load conditions by simulation. A hybrid ac-dc distribution network with minimum conversion stages is proposed.