Flywheel Capacitor

This is a high-speed flywheel based energy storage system for electricity that offers the key advantages of mechanical storage systems together with the flexibility of electrical connection. An electric motor generator is connected to the flywheel allowing a DC voltage to be stored or recovered.

The electrical power is used to spin up the flywheel and when the power is turned off the flywheel continues to spin. To recover the power as electricity the motor generator is used to generate electricity thus slowing down the flywheel.

Flybrid have built and tested a 530 kJ, 60 kW storage system that weighs just 27 kg. This system is designed for vehicle mounted short-term storage applications and has been developed in conjunction with Magneti Marelli Motorsport.