A modified Z-source converter based single phase PV/grid inter-connected DC charging converter for future transportation electrification

Use of renewable sources of energy for charging of electric vehicle(EV) batteries have generated tremendous interest. The use of off-board DC chargers to reduce the weight and increase space inside an electric vehicles has been an important area of interest. Harvesting solar energy to charge electric vehicle batteries can result in large inefficient systems when multiple power conversion stages are present. On the other hand, integration of renewable sources of energy with the grid can reduce the dependency on the AC grid while charging an Electric Vehicle(EV) and also the use of fossil fuels to generate more energy. In this paper, a single stage PV grid integrated modified z source inverter is presented. The component sizing, modeling and different modes of operation have been presented.