The research team has developed a prototype based on silicon carbide power semiconductors that controls the current flow. It could be used not only for better integration of charging stations into the power grid, but also in data centers or for the connection of DC networks.
In the course of the expansion of renewable energies, the number of decentralized energy producers and consumers such as wind power plants and charging stations is increasing. "The conventional infrastructure is not designed for bidirectional current flows," says Professor Marco Liserre, Professor of Power Electronics at CAU. The new power electronics components could help to distribute electricity according to demand and thus better control the energy grid and counteract overloads and failures. Together with his research group, Liserre has developed a power electronic transformer that transforms medium voltage into low voltage with only minor energy losses and also enables DC connection. "We want to modernize the power grid and make it fit for the energy transition. What we need is a flexible, efficient and above all reliable system," Liserre continues.