Improved Performance of a Neutral Point Clamp (NPC) Five -Level-Inverter

The paper presents that the gross elimination of the harmonics as function of total harmonic distortion (THD) across the load side of the neutral point clamping (NPC) five level-Inverters with single stage LC-filter which plays an important character to preserve the good quality of the power in the power distribution. Flexible sinusoidal pulse width modulation (SPWM) control strategy is used for driving the power switches of the proposed NPC converter system to null and void the asymmetrical harmonics with lower rating of semiconductors. Performance assessment and improvement are taken into account by simple modeling, analysis and lower switching power losses of semiconductors while it is applicative for the medium power application