Hardware Implementation of Improved Voltage Gain by Hybrid Non-Isolated Bidirectional Dc-Dc Converter

– This work presents the design and analysis of a Hybrid Non-Isolated Bidirectional DC-DC Converter (HNB-DC), specifically developed for electric vehicle (EV) charging and discharging applications interfaced with a DC grid. The proposed converter topology addresses limitations in conventional designs by incorporating a bidirectional power flow capability, enabling efficient energy transfer between the grid and EV batteries. To achieve a high voltage conversion ratio suitable for EV applications, the converter utilizes an enhanced buck-boost architecture featuring four active switches with corresponding diodes, two inductors, and a capacitor. This configuration supports improved energy storage and transfer efficiency, making it a suitable candidate for practical EV charging stations. The design is validated through extensive simulations conducted in MATLAB/SIMULINK using optimized parameters, confirming its effectiveness in delivering high-performance voltage conversion and bidirectional energy flow. This study lays the groundwork for hardware implementation and experimental verification of the proposed converter for real-world EV infrastructure.