New flywheel design could eliminate power converter for grid connection

T2Covered by 1 source · first reported by Utility Dive / pv magazine / Energy-Storage.news at 28 Oct, 10:30 UTC

A research team has built a fixed-speed flywheel prototype that uses a wire-rope mechanism to move weights inward and outward during discharge and charge. The system briefly supplied power to the electrical supply, but steady-state losses prevented net electrical energy discharge over the complete…