Electrical Engineering in Japan · 1994 · 13 citations · 0 references
EngineeringElectrical EngineeringElectric MachinesMagnetic MaterialsStorage SystemsBearing DesignElectric MotorsEnergy StorageMagnetic Energy MaterialsSuperconducting Magnet SystemsSuperconducting MaterialsBearingsElectric Power StorageFeasibility Study DesignFlywheel Energy StorageHybrid Energy Storage SystemsMagnetic BearingsMagnetic Field Gradient SystemsSuperconducting Magnets
Abstract When combined with a magnet having a magnetic field gradient (for example, a permanent magnet), a Y‐based oxide superconductor is capable of forming a noncontact bearing with a strong levitational force. Since this bearing exhibits low rotational loss, it is very likely to form a highly efficient power storage system in combination with a flywheel. In this paper, an 8‐MWh power storage system utilizing a flywheel was designed conceptually to examine its applicability and the possible effects of its introduction. It was found that this system was an effective power storage.