PV‐Fed Center‐Sourced Interleaved Multilevel Boost Converter–Fed H‐Bridge Inverter for High‐Power Applications

This paper introduces a novel center‐sourced interleaved multilevel boost converter with H‐bridge inverter (CSIMBCI) that is specifically designed for high‐power photovoltaic (PV) applications. Multiple interleaved boost converter stages are arranged in parallel and centrally energized by a PV array in the proposed topology. These stages interface with an H‐bridge–based multilevel inverter to generate a high‐quality AC output suitable for grid‐tied and standalone systems. The CSIMBCI provides a number of significant benefits, including continuous input current, which significantly improves voltage gain at a lower duty cycle, and reduced current stress on power devices, which in turn enhances source stability and reduces input‐side ripple while minimizing switching losses. The modular and scalable design of this architecture is a notable feature, as it allows for the incorporation of additional stages without modifying the central circuit, thereby simplifying system upgrades and customization. The converter’s efficacy in enhancing performance is validated by comprehensive simulations conducted in MATLAB/Simulink. The results demonstrate the system’s capacity to enhance overall efficiency, deliver superior power quality, and suppress output‐side current to support multilevel voltage synthesis with minimal harmonic distortion, and eleven‐level output is effectively generated by a hardware implementation that employs a 1‐kW PV panel. The THD waveform meets the standard, ensuring minimal interference and energy loss. The CSIMBCI is a prospective solution for future PV systems that require scalable and high‐performance DC–AC power conversion due to its reliable high‐power operation, modular expandability, and efficient energy conversion. The results demonstrate the system’s capacity to enhance overall efficiency, deliver superior power quality, and suppress output‐side current disturbance. Confirming the converter’s ability to support multilevel voltage synthesis with minimal harmonic distortion, an eleven‐level output is effectively generated by a hardware implementation that employs a 1‐kW PV panel with the efficiency of 93%.