Mitigation Technique for Cascaded H-Bridge Multilevel Inverters Based on Pulse Active Width Modulation

This article considers ${l}$ -level cascaded H-bridge (CHB) inverters and proposes a new modulation method based on pulse active width (PAWM), capable to minimize all harmonics with order notation="LaTeX">$n< 2l+1$ satisfy the European harmonic standards for medium-voltage-level applications EN 50 160 CIGRE WG 36-05. A mathematical theorem its proof are presented, stating features of procedure, which is an improvement selective elimination (SHE) PAWM proposed by Buccella et al. After detailed description method, simulation experimental results have been included, showing capability reduce low-order harmonics.