ESTUDOS DE PERDAS NOS SEMICONDUTORES E DA DISTORÇÃO HARMÔNICA EM TOPOLOGIAS DE CONVERSORES MULTINÍVEIS

Abstract

This article presents a study of semiconductor losses and harmonic distortion in multilevel converter topologies. Switching, conduction, and total losses will be analyzed for two-level topologies as well as three- and four-level Neutral-Point Clamped (NPC) topologies at varying frequencies. Additionally, the Total Harmonic Distortion (THD) of the voltage and phase current waveforms will be evaluated. The results include the values of losses and THD for six distinct cases, with variations in standard active and reactive power values, as well as voltage, resistance, and inductance values obtained through simulation. The study also highlights which topology performs better in each case, analyzing scenarios with different voltages and frequencies. The results show that multilevel systems exhibit superior performance at high voltages and elevated frequencies, whereas two-level converters perform better at lower frequencies.