Experimental assessment of energy saving due to trains regenerative braking in an electrified subway line

The paper deals uith the research activity conducted in order to determine the impact of regenerative braking techniques adopted on board of trains operating in subway electrified 5~ steins Even though sq steins adopting this technique are very diffuse world wide. experimental results demonstrating the impact on energy consumptioil are rarely made available for the scientific community The paper reports the results of an extensive experimental activity conducted on an electrified subway line in Rome, in order to estimate the energ saving due to the techniques above mentioned Since the monitoring act11 itj of the system demand in absence of regenerative braking had to be limited to the traffk peak hours of only tno subsequent days. an available model, being able to simulate the instantaneous demand profile of DC electrified subux pouer sjstems, has been used in order to extend the numerical el aluations based on the experimental activity to a whole dn\ of Operation