Powertrain optimisation in a hybrid electric bus

A. Shojaei*, D. Strickland, D. Scott, M. Tucker, G. Kirkpatrick, B. Price, S. Luke, J. Richmond

*Corresponding author for this work

Research output: Chapter in Book/Published conference outputConference publication


This paper describes the use of a formal optimisation procedure to optimise a plug-in hybrid electric bus using two different case studies to meet two different performance criteria; minimum journey cost and maximum battery life. The approach is to choose a commercially available vehicle and seek to improve its performance by varying key design parameters. Central to this approach is the ability to develop a representative backward facing model of the vehicle in MATLAB/Simulink along with appropriate optimisation objective and penalty functions. The penalty functions being the margin by which a particular design fails to meet the performance specification. The model is validated against data collected from an actual vehicle and is used to estimate the vehicle performance parameters in a model-in-the-loop process within an optimisation routine. For the purposes of this paper, the journey cost/battery life over a drive cycle is optimised whilst other performance indices are met (or exceeded). Among the available optimisation methods, Powell's method and Simulated Annealing are adopted. The results show this method as a valid alternative modelling approach to vehicle powertrain optimisation.

Original languageEnglish
Title of host publication2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012
Number of pages6
ISBN (Print)978-1-4673-0953-0, 978-1-4673-0954-7
Publication statusPublished - 2012
Event2012 IEEE Vehicle Power and Propulsion Conference - Seoul, Korea, Democratic People's Republic of
Duration: 9 Oct 201212 Oct 2012


Conference2012 IEEE Vehicle Power and Propulsion Conference
Abbreviated titleVPPC 2012
Country/TerritoryKorea, Democratic People's Republic of


  • component sizing
  • hybrid electric vehicles
  • Model-in-the-Loop
  • Powell's method
  • Powertrain optimisation
  • simulated annealing


Dive into the research topics of 'Powertrain optimisation in a hybrid electric bus'. Together they form a unique fingerprint.

Cite this