Abstract
As the electrical vehicle fleet grows, extreme fast charging (XFC) stations for multiple vehicles will be increasingly needed. The challenges for the implementation of many XFC stations in the electric power system are many and it is necessary to use converters that reduce the negative impacts on the electric grid, meet the standards and recommendations, and that are technically and economically viable. This work proposes an XFC station for multiple vehicles that has a very low current harmonics injection at the grid side, with a Total Demand Distortion (TDD) of 0.62% without using sinusoidal filter, provides galvanic isolation for each input/output port, and can provide additional features such as Distributed Energy Resources (DER) integration and ancillary services. This is achieved by combining a bidirectional low switching frequency grid-connected active front-end with high switching frequency SiC-based dc/dc converters in the vehicles side. After a brief description of the proposed system and its control, simulation results are presented to validate the XFC.
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