A Soft Switching Boost DC-DC Converter Based on ZVS for Vehicle to Grid Applications with Enhanced Efficiency

This paper presents a soft-switching technique based on Zero Voltage Switching (ZVS) for boost DC-DC converter using an ancillary circuit architecture comprising of an auxiliary diode, an inductor, and a switch. This auxiliary inductor offers ZVS condition for the main switch, thereby terminating the ripple element of the inductor current and reducing the switching losses. The auxiliary circuit also has the benefit of storing energy in the auxiliary inductor, which is then sent to the load through the diode. A soft-switching ZVS boost DC-DC converter is used in a vehicle to grid application to ensure that the system runs efficiently. The simulation results of the boost converter employing the ZVS approach are investigated using the MATLAB/SIMULINK software platform and are validated with experimental results. The performance of ZVS based boost converter is improved when compared to the conventional converter.