Harmonics Analysis of Power Electronics Loads

Abstract

The linear customer loads are now being dominated by sensitive and sophisticated non-linear customer loads with the growth in the power electronics and control system industries. This have a catastrophic impact on a power system and equipment: increasing harmonics "pollution". In this paper the modelling of power electronics loads used in domestic and small scale industrial distribution systems are discussed. Various domestic loads such as computer, fluorescent lamp, CFL lamp and small scale industry loads such as adjustable speed drive, arc welder and lift are modelled in PSCAD/EMTDC and then the harmonic analysis of these models are performed