Single-phase cascade multilevel PWM converter based on FLC modules with LC output sine filter

Abstract

The paper presents simulation of single-phase cascade multilevel PWM converter topology based on 5-level flying-capacitor (FLC) modules. The cascaded solution provides a high number of output levels and high modularity (power electronics building blocks - PEBB), what gives possibility for flexible operation of converter at various high voltage and high power conditions. Several simulation results are presented, which confirm the validity of the proposed approach and possibility to reach high quality of output voltage. Final results are compared with cascade multilevel converter based on H bridge module.