Compact 9-Level Double Boost Inverter (C9LDBI) with SPWM Control

This article presents a modular design and control strategy for the Compact 9 level Double Boost Inverter (C9LDBI) when used with Sinusoidal pulse width modulation (SPWM). This approach aims to address the drawbacks of the conventional Multilevel inverters, such as the need for more switching, diodes and capacitors. The suggested C9LDBI can do double voltage boost nine level output using one DC supply, three capacitors, nine switches and three diodes. Conventional inverters take more parts than C9LDBI. In addition, the multi-carrier modulation system with SPWM control is helping to produce better output waveform. MATLAB simulation test findings about the attributes of lower Total Harmonic Distortion and effectively high DC bus utilisation suggest the general effectiveness of C9LDBI under various of SPWM control with the modulation index variation.