Impacts of low voltage distribution grid resilience constraints on AC/DC converter sizing

In a context of increasing DC applications and energy savings, LVDC technologies could be a key technology towards more efficient distribution grids. However, the specific behavior of DC short circuits and the selectivity constraints of existing installations must be taken into account when sizing the converter that interfaces the AC and DC grids. This article details these requirements, proposes a sizing method by electrothermal simulation and highlights the consequences on the converter sizing.