Two engineering professors have examined the use of flywheel technology to store energy generated when light rail transit trains decelerate and stop. Trains such as the LRT used in Edmonton, Alberta, Canada, are designed with so-called dynamic braking. The deceleration generates electrical energy, which needs to go somewhere.A flywheel system could store it as mechanical energy. This energy could be converted to electrical energy when the train is ready to leave the station.

Read more here:: http://feeds.sciencedaily.com/~r/sciencedaily/matter_energy/fuel_cells/~3/bnzjAEViLY0/160830101344.htm

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