Study of superconductor bearings for a 35Â kWh superconductor flywheel energy storage system

► We made a 35 kWh superconductor energy storage system. ► The superconductor bearing for 35 kWh SFES was studied. ► The stiffness was 346 kN/m. ► The damping coefficient was 1255 N s/m. ► We find that there were some external damping.