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Development of a Superconducting Flywheel Environmental Engineering Research Laboratory

Development of a Superconducting Flywheel

The superconducting flywheel energy storage system uses a large rotating disk (flywheel) levitated with superconducting technology to store (charge) regenerative electric power as kinetic energy and convert the kinetic energy back to electricity (discharges) as required.

Advantages include less deterioration by repeated charging and discharging compared to lead batteries and lithium-ion batteries and reduction of maintenance due to wear as the flywheel levitates during rotation. At present, field tests are planned at the Chuo line Anayama substation (Nirasaki City, Yamanashi Prefecture). Effective energy regeneration of approximately 400kWh per day and a reduction of CO2 emissions of approximately 64 tons per year are anticipated.

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