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   Regenerative braking in DC systems  evaluated  
Electric stock may recuperate energy during braking by using traction motors as generators. In DC supply systems (1,5 and 3 kV) high recovery rates are only achievable under favourable conditions.
Technology field: Regenerative braking and energy management
open main section General information
open main section General criteria
open main section Environmental criteria
close main section Economic criteria
  close sub-section Vehicle - fix costs: low
    Recuperation is a common feature in modern stock with no additional costs. If on-board storage technologies are implemented to raise recuperation rates, vehicle fix costs are very high.
  Vehicle - running costs: significant reduction
    Reduced energy costs and maintenance costs through reduced wear in mechanical brakes.
  Infrastructure - fix costs: none
    No additional infrastructure needed. The situation is different if additional infrastructure is implemented (cf. thyristor inverters in substations or stationary energy storage.
  Infrastructure - running costs: unchanged
    (no details available)
  Scale effects: none
    (no details available)
  Amortisation: < 1 year
    The situation is obviously different if additional technology is implemented.
no data available Application outside railway sector (this technology is railway specific)
open main section Overall rating
References / Links:  Andersson 2000;  Moninger, Gunselmann 1998;  Piro (no year);  Moninger (no year)
Attachments:
Related projects:  Choppers for Sprinter train sets;  New double-decked Regiorunners;  Studies performed on energy storage systems
Contact persons:
 date created: 2002-10-09
 
 
© UIC - International Union of Railways 2003
 
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