A Novel Switching Control Technique for a Packed E-Cell (PEC) Inverter Using Signal Builder Block

Multilevel Inverters (MLI) have become important for electrical energy supplement to grids due to their modularity, lower Total Harmonic Distortion (THD), and decreased filter needs. Recently, a new compact MLI has been introduced named Packed E Cell (PEC) inverter, where an auxiliary dc-link cell is made along with the shunted capacitors. This paper proposes a new switching controller using redundant states in signal builder blocks to balance voltage capacitors. Simulation results have shown the optimum operation of PEC topology and validated the proposed technique.