Abstract

In this article, a single-phase modified cascaded H-Bridge eleven-level inverter that produces a precise sinusoidal output voltage while significantly reducing THD. The proposed topology enables a reduction in the number of switches relative to the traditional cascaded H-bridge inverters but with a THD of about 3. The designed inverter construction consists of four bidirectional switches, including a conservative H-Bridge that allows adequate voltage control and enhances overall structure performance. The primary goal of this effort is to decrease the number of devices without sacrificing power quality and to provide an affordable solution that is suitably tailored for various applications that demand high-quality AC voltage. By minimizing harmonics and guaranteeing that the production voltage waveform intentionally closes a sinusoidal waveform, a suitable switching policy contributes to the development of the system's performance. The integrity of the system’s design produces flexibility, making it efficiently extendable to deliver higher output voltage levels should ultimate demands desire it. The designed system is modeled and simulated using the MATLAB/SIMULINK and PROTEUS domains to demonstrate its feasibility. The findings of the experiment indicate that they are very close to simulation, confirming the pragmatic practicability of the system. Moreover, experimental outcomes further validate the successful process of the inverter, demonstrating valuable performance in terms of output quality and system performance.