ABSTRACT
The large-scale integration of renewable energy sources such as solar photovoltaic and wind power into electrical grids has introduced new challenges related to power quality, stability, and controllability. Power electronic converters act as the key interface between renewable sources and the grid, and their topology significantly influences system performance. This paper presents a comprehensive study of next-generation converter topologies developed for renewable grid linkage. Advanced multilevel, impedance-source, and modular converter structures are discussed with respect to efficiency, scalability, fault tolerance, and grid code compliance. Comparative analysis highlights the advantages of emerging topologies over conventional two-level converters. The paper also addresses design challenges and future research directions toward resilient and grid-supportive renewable energy systems.
KEYWORDS: - Renewable energy integration, Power electronic converters, Multilevel inverters, Grid-connected converters, Power quality, Converter topology
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