A trial manufacturing of 1k Wh flywheel with high temperature superconducting magnetic bearing for energy storage system

Abstract

As the high temperature superconducting magnetic bearing has the characteristics of low loss, research and developments of the flywheel with this bearing have been executed for energy storage system. This bearing has been planned to be used for the thrust bearing of CFRP flywheel, having the characteristics of high mechanical strength and a low specific weight. The verification tests have been performed of the maximum energy storage of 1.4kWh at 20, 000rpm.