MODERN POWER CONVERTERS WITH WIDE-BANDGAP DEVICES FOR RENEWABLE GRID INTERFACES: A HIGH-FREQUENCY, MULTILEVEL ARCHITECTURE FOR ULTRA-EFFICIENT ENERGY TRANSFER AND THERMAL RELIABILITY

As renewable energy systems expand globally, the demand for efficient, compact, and thermally reliable power converters has intensified. This paper explores the integration of wide-bandgap (WBG) semiconductor devices, such as SiC and GaN, into high-frequency, multilevel power converter architectures tailored for grid-connected renewable energy applications. The research highlights improvements in energy transfer efficiency, power density, and thermal management made possible by these advanced materials. Furthermore, a novel multilevel topology is proposed and evaluated through thermal and switching performance comparisons with traditional silicon-based systems.