Modelling and Simulation of H-type Multilevel Inverter with Secondary Circuit

This paper presents the modelling and simulation of five-level H-type inverter configuration with secondary circuit. The implementation of five-level H-type inverter with secondary circuit requires only five MOSFETs, four diodes and two capacitors which is notably less against the devices utilized in the conventional H-bridge inverter without secondary circuit. A comparative analysis of the parameter values (fundamental voltage and total harmonic distortion) of simulated load voltage waveforms of five-level conventional H-bridge inverter, five-level T-type inverter and five-level H-type inverter with secondary circuit has been accomplished. The results show the supremacy of fivelevel H-type inverter over five-level conventional H-bridge inverter and five-level T-type inverter. The simulation of Htype inverter with secondary circuit is achieved on MATLAB platform and the theoretical model is validated by experimental result generated by a hardware prototype.