Magneti Marelli and Flybrid to Collaborate on KERS Energy Storage for Motorsport


magneti-marelli-logoItalian Motorsport electronics specialist Magneti Marelli and British high-speed flywheel specialists Flybrid Systems announce the collaboration to develop a new energy storage solution for the Kinetic Energy Recovery System (KERS). The new product will deliver a high power electrical storage system for hybrid racing cars capable of deep depths of discharge with no performance degradation and a long service life.

The new product named Flywheel Capacitor consists of a high-speed carbon fibre flywheel incorporating Flybrid technology connected to a high-speed electric motor generator using technology from Magneti Marelli, all managed by Magneti Marelli’s control electronics.

The device works by applying to the electric motor generator the recovered electrical energy captured from the vehicle during braking events. The energy is stored into the Flywheel Capacitor by speeding up the flywheel. During the acceleration events of the vehicle, the energy stored into the flywheel capacitor is returned to the vehicle by transforming the kinetic energy of the flywheel into electrical energy via the motor generator. 

The Flywheel capacitor will not use chemical battery based energy storage systems.

The first Flywheel Capacitor to be developed will have a specification of 60 kW power and 600 kJ total storage capacity but the specification can be readily adapted to any vehicle requirements. Both partners will draw upon extensive experience with their own KERS products to deliver a working prototype in the next few months. 

The electric motor and flywheel will rotate at up to 60,000 RPM and the flywheel will sit inside an evacuated chamber that includes special containment features to ensure complete safety. A small electric pump will occasionally top up the vacuum so that no regular maintenance is required. 

State of the art magnetic design of the motor generator and high efficiency electronics are expected to deliver round trip storage efficiencies approaching 80%. The device has a low cooling requirement and contains no flammable materials. The complete flywheel capacitor including the associated electronics is expected to weigh just 20 kg. 

The new flywheel capacitor product will be commercially available from both Magneti Marelli and Flybrid Systems. Both companies will continue to develop, manufacture and distribute their own existing KERS products.

(Source: Flybrid Systems)


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