Overview of current development in electrical energy ...
2015-1-1u2002·u2002The application areas of high speed FES are continuously expanding, mainly in high power quality and ride-through power service in traction and the aerospace industry . The specific energy of low speed flywheels is ∼5 W h/kg, and the high speed composite rotor can achieve a specific energy of up to ∼100 W h/kg [57] .
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