Performance Improvement of High Efficiency Bidirectional DC-DC Converter with High Voltage Conversion Ratio

This project proposes a high-efficiency power modulator a high voltage converter ratio for (Bi-directional dc-dc converter) with low voltage energy storage devices. For a step-up operation, the proposed converter operates with a high step-up voltage converter. a low voltage side power switches at It has low voltage stresses. a high voltage side output diode also has low switching losses. For a step-down operation, the proposed converter operates with the high step-down voltage conversion ratio. It features a zero-voltage switching of power switching at the high voltage side. At the low voltage side, a current doubler rectifier reduces the current ripples. This proposed work is designed and simulated by using MATLAB Simulink software. The necessary gating signals for switches in the converter are generated with the use of pulse width modulation. Simulation and results are presented and analyzed to verify the operation of the proposed converter.