A novel Buck-Boost Modified Series Forward (BBMSF) converter for enhanced efficiency in hybrid renewable energy systems

A novel Buck-Boost Modified Series Forward (BBMSF) converter is proposed in this research work to enhance the efficiency and reliability of Hybrid Renewable Energy Systems (HRES) integrating solar photovoltaic panels, vertical-axis wind turbines, and battery storage. The proposed converter dynamically switches between buck and boost modes, ensuring consistent voltage regulation and optimal energy transfer under varying environmental and load conditions. Unlike traditional designs, the BBMSF architecture employs an auto-transformer configuration to reduce magnetic losses and simplify control mechanisms. A simulation-based evaluation was conducted using different wind turbine configurations—Darrieus and Savonius—highlighting the superior performance of the Darrieus-based system, which achieved a steady-state error of 0.67 and reduced switching losses of 7.63%. Sensitivity analyses were further performed to assess the converter’s response to fluctuations in load, solar irradiance, and battery state of charge, demonstrating its robust adaptability and high conversion efficiency. The results confirm the effectiveness of the BBMSF converter in maintaining stable energy output and minimizing losses, making it a promising solution for real-world renewable energy integration.