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04/2012 Williams High-Power Flywheel Daniel Hertrich, P.Eng. Senior Hydro/Civil Engineer Renewable Power Business Unit Slide 2 2 04/2012 High-Power Flywheel Systems Mobile Applications Motorsport Mobile solution developed by WF1 for KERS Used for Porsche 911 GT3 R Hybrid 2 x 80 hp motors connected to front wheels Capture regen. braking energy going into turns, increased, 4WD power out of turns Audi etron quattro placed 1 st and 2 nd in 24 hrs of le Mans Slide 3 3 04/2012 High-Power Flywheel Systems - Technology Magnetically Loaded Composite (MLC) Lower eddy current losses in rotor Lower heat gain higher duty cycle Body of rotor filament wound carbon and glass fibre composite Slide 4 4 04/2012 High-Power Flywheel Systems Mobile Applications WHP activity Contract with London Bus operator to retrofit with flywheels Contract with UK operator of electric passenger rail to study replacing onboard resistor bank with flywheels Slide 5 5 04/2012 High-Power Flywheel Systems - Technology High power density for short term, cyclical storage 200 kW peak, 1.5 kWh storage High duty cycle (>75%) without loss in performance Long life (20 yrs) Low standing loss (96%) Fast response time (full power