Modeling of nonlinear components for harmonic studies

This paper presents an overview of major power electronic types and conventional devices with nonlinear voltage-current characteristics of harmonic sources for the power system harmonic analysis. The power electronic switching types of harmonic sources to be reviewed include static power converters, static VAr compensators, and cycloconverters. Harmonic sources with nonlinear voltage-current characteristics include iron-core reactors, transformers, rotating machines, and arc furnaces. The generating characteristics and modeling methods of these sources are reviewed and summarized in this paper.