PV Fed EV Charging System Based on Re-lift Luo Converter and DAB Converter

The insufficiency and soaring rate of fossil fuels, as well as growing concerns about global warming, have pushed electric vehicles (EVs) to become a significant aspect of the future transportation system. The growth in the adoption of EVs results in the need for broadly spread charging stations, hence a Photovoltaic (PV) based EV charging system is adopted since the generation of power from PV is possible everywhere. An EV charging system with two converters is constructed in this research work, one of which is a re-lift Luo converter and the other is a Dual Active Bridge (DAB) converter. A re-lift Luo converter is adopted for the conversion of the low PV voltage output to an enhanced voltage of a higher level. The DAB converter is effective in providing the required galvanic isolation and allowing bidirectional power flow. The PV system's output voltage fluctuates with changing weather conditions and solar irradiation. Hence, the operation of the re-lift Luo converter is controlled by using the Fuzzy Logic Controller (FLC), which is highly capable of addressing the uncertainties associated with PV output. The operation of the DAB converter is controlled by implementing the Phase Shift (PS) control technique. MATLAB simulation is done to validate the proposed system's performance.