A new multilevel inverter with fewer number of control switches

Multilevel inverters (MLI) plays a vital role in high voltage and high power applications due to its capability of converting DC to AC with reduced total harmonics distortion (THD). In this paper, a new multilevel inverter (MLI) with fewer number of control switches is proposed. The proposed topology requires a fewer number of control switches compared to conventional and recently derived topologies, thereby reducing complexity and the total cost of circuit. The topology operation is discussed for a seven-level and it can be easily extended to N-level by adding (N-3)/4 repeating stages. N-level proposed topology requires (N+3)/2 unidirectional power switches and 2N-2 diodes. The proposed topology is simulated for 100W; seven levels with level shifting SPWM technique in MATLAB/SIMULINK and results shows the validity of topology.