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A Study of Urban Electric Bus With Hybrid Energy Storage System Based on Battery and Supercapacitors

[+] Author Affiliations
Ferdinando Luigi Mapelli, Davide Tarsitano, Davide Annese

Politecnico di Milano, Milan, Italy

Marco Sala, Giorgio Bosia

Eutecne S.r.l., Genova, Italy

Paper No. IMECE2013-63423, pp. V013T14A014; 10 pages
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 13: Transportation Systems
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5642-0
  • Copyright © 2013 by ASME


Nowadays considerable resources have been invested on low emission passenger vehicle both for private and public transportation. A feasible solution for urban buses is a full electrical traction system fed by supercapacitor that can be recharged at each bus stop while people are getting on and off. Such vehicle covers a short distance between consecutive stops, usually less than half a kilometer. An energy storage system able to provide high power peaks and small amount of energy is required. For these reasons, supercapacitors, which are capable of fast charging during bus stops, appear the most appropriate storage devices [1]. In order to consider the worst operating condition for the bus (like traffic jam of higher distance to be covered), a conventional battery is also installed, getting an hybrid energy storage system. An energy management function, able to manage the energy storage system, has been developed and validated by means of a numerical simulation model.

Copyright © 2013 by ASME



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