Solid State Transformer for Electric Vehicle Charging Infrastructure

In the upcoming years, electrification of transportation the system is indispensable while considering the depletion of fossil fuels last only for the next 50 years. Also, extensive use of Internal Combustion (IC) engine operated vehicle emits CO2 in large extent in the environment which is highly dangerous to all biotic and abiotic resources on the earth. Transportation by Electric Vehicle (EV) is the only feasible solution to these problems. Extensive research effort has been made to develop and optimize the transportation system by electric vehicle. Fast Charging Infrastructure (FCI) is the most important research topic in the area of EV system. This paper covers the requirements and issues for developing highly efficient and reliable fast charging infrastructure for electric vehicles. It also includes the benefits of proposing a high voltage charging system. Moreover, this paper shows how Solid State Transformer (SST) can be utilized to design efficient and reliable 800-V DC charging infrastructure for EV. A new topology of SST for charging station infrastructure is proposed in this paper. Simulation results for isolated multi port 800V DC bus at the output are presented to validate the proposed topology.