Comparison of superconducting generator with 2G HTS and MgB2 wires

This paper compares the features of second generation (2G) High Temperature Superconducting (HTS) field coil with those of magnesium diboride (MgB2) field coil for a 10 MW class superconducting generator. Both coils can function effectively in their respective magnetic flux density range: 10-12 T for 2G HTS field coil, 2 T for MgB2 superconducting field coil. Even though some leading researchers have been developing 10 MW class superconducting generator with 2G HTS field coil, other research groups have begun to focus on MgB2 wire, which is more economical and suitable for mass production. However 2G HTS wire is still appealing in functions such as in-field property and critical temperature, it shows higher in-field property and critical temperature than MgB2 wire.