Development of Two Directional DC/DC Converter with Dual-Battery Energy Storage for Hybrid Electric Vehicle System

Present research work aims at developing a bi-directional DC/DC converter (BDC) connecting the main energy storage (ES1), auxiliary energy storage (ES2) and DC bus with Different voltage levels for use in hybrid automotive electrical systems. With bidirectional current regulation, the proposed converter can operate in both boost mode (low voltage dual power supply mode) and buck mode (mains uninterruptible power supply regenerative mode high pressure). In addition, the model can independently manage the current between two low voltage sources (dual low voltage source boost/drop mode). According to the three power transmission methods provided by BDC, circuit layout, operation, steady-state analysis and closed-loop control are introduced. In addition, the proposed converter is validated using simulation results for the 1 kW prototype system. MATLAB / Simulink software is used to perform simulation work.