Approach to Hybrid Energy Storage Systems Dimensioning for Urban Electric Buses Regarding Efficiency and Battery Aging

Nájera Álvarez, Jorge and Moreno-Torres, Pablo and Lafoz Pastor, Marcos and Arribas, Jaime R. (2017). Approach to Hybrid Energy Storage Systems Dimensioning for Urban Electric Buses Regarding Efficiency and Battery Aging. "Energies", v. 10 (n. 11); pp. 1-16. ISSN 1996-1073. https://doi.org/10.3390/en10111708.

Description

Title: Approach to Hybrid Energy Storage Systems Dimensioning for Urban Electric Buses Regarding Efficiency and Battery Aging
Author/s:
  • Nájera Álvarez, Jorge
  • Moreno-Torres, Pablo
  • Lafoz Pastor, Marcos
  • Arribas, Jaime R.
Item Type: Article
Título de Revista/Publicación: Energies
Date: November 2017
ISSN: 1996-1073
Volume: 10
Subjects:
Freetext Keywords: battery aging; electric bus; energy efficiency; Hybrid Energy Storage
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This paper focuses on Hybrid Energy Storage Systems (HESS), consisting of a combination of batteries and Electric Double Layer Capacitors (EDLC), for electric urban busses. The aim of the paper is to develop a methodology to determine the hybridization percentage that allows the electric bus to work with the highest efficiency while reducing battery aging, depending on the chosen topology, control strategy, and driving cycle. Three power electronic topologies are qualitatively analyzed based on different criteria, with the topology selected as the favorite being analyzed in detail. The whole system under study is comprised of the following elements: a battery pack (LiFePO4 batteries), an EDLC pack, up to two DC-DC converters (depending on the topology), and an equivalent load, which behaves as an electric bus drive (including motion resistances and inertia). Mathematical models for the battery, EDLCs, DC-DC converter, and the vehicle itself are developed for this analysis. The methodology presented in this work, as the main scientific contribution, considers performance variation (energy efficiency and battery aging) and hybridization percentage (ratio between batteries and EDLCs, defined in terms of mass), using a power load profile based on standard driving cycles. The results state that there is a hybridization percentage that increases energy efficiency and reduces battery aging, maximizing the economic benefits of the vehicle, for every combination of topology, type of storage device, control strategy, and driving cycle.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTRA2014-57520-RPCBBUSUnspecifiedSIMULACION Y CONTROL DE LA GESTION ENERGETICA DE UN SISTEMA HIBRIDO BASADO EN PILA DE COMBUSTIBLE, SUPERCONDENSADOR Y BATERIA PARA UN AUTOBUS ELECTRICO.
Madrid Regional GovernmentS2013/MIT-2713SEGVAUTO-TRIESCMAparicio Izquierdo, FranciscoSeguridad de los vehículos Automóviles, por un Transporte Inteligente, Eficiente y Seguro

More information

Item ID: 50710
DC Identifier: http://oa.upm.es/50710/
OAI Identifier: oai:oa.upm.es:50710
DOI: 10.3390/en10111708
Official URL: http://www.mdpi.com/1996-1073/10/11
Deposited by: Memoria Investigacion
Deposited on: 08 May 2018 15:03
Last Modified: 04 Jun 2018 15:28
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