Headline: 3-D Numerical Modelling of AC losses in MgB2 wires for the 10 kA demonstrator of BEST PATHS

The European project BEST PATHS was initiated with the aim of developing state-of-the-art high-power transmission technologies. In this work, the AC losses in a superconducting MgB2 cable are estimated for various operating conditions. Based on the analysis of the most important parameters, recommendations are given to significantly reduce the AC losses of the cable and consequently decrease the operating cost for long lengths.