Over-modulation phenomena and its influence on the pulse width modulated single-phase inverter output voltage

Abstract

This paper describes analysis of the pulse width modulated single-phase inverter output voltage. By using the over-modulation principle the low THD distortion of the output voltage appears but the first voltage harmonic is increased. The root mean square (RMS) component of the output voltage is also increased. Due to this phenomenon the dc converter input voltage can be decreased, which is always welcomed.