A Novel H Bridge- based Inverter with 21 Level Staircase Output

Multilevel inverter is an emerging technology in the field of power electronics without which there is no industrial growth. High power sinewave inverter with minimum distortion is required in numerous applications of the industry. This requirement is not attainable using a single switch and therefore multilevel inverter stretched its hands with its several advancements. In present days multilevel inverter takes its role with staircase output and reduced harmonics. The 21 level inverter is proposed here with reduced number switches and reduced harmonics. Since the number of switches are reduced the switching frequency is also getting reduced. The power quality of the proposed 21 level inverter is increased by using selective harmonic elimination technique (SHE). The staircase output is achieved with the simulation using MATLAB/ SIMULINK and the same staircase output is obtained with the implementation of hardware also.