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Traction-Motor Power Ratio and Speed Trajectory Optimization for Power Split PHEVs Using Route Information

[+] Author Affiliations
Mahyar Vajedi, Amir Taghavipour, Nasser L. Azad

University of Waterloo, Waterloo, ON, Canada

Paper No. IMECE2012-86859, pp. 301-308; 8 pages
doi:10.1115/IMECE2012-86859
From:
  • ASME 2012 International Mechanical Engineering Congress and Exposition
  • Volume 11: Transportation Systems
  • Houston, Texas, USA, November 9–15, 2012
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4527-1
  • Copyright © 2012 by ASME

abstract

Plug-in hybrid electric vehicles (PHEVs) are a promising option for future of transportation. They suggest better fuel economy and less emission compared to conventional HEVs. In this work, a method to find the optimum traction-motor power ratio (TMPR) and speed trajectory for a power-split PHEV is proposed in order to minimize the fuel consumption. The traveling path is divided into several segments. Each segment consists of acceleration, constant speed, and deceleration sections. Also, the route information, such as travel distance, traffic data, the maximum permissible speed, and road grade are known in each segment.

The results of simulation show a considerable reduction in the fuel consumption for different energy management strategies; up to 8% in CDCS, 12.9% in manual CDCS, and 18.2% in blended strategy, using the proposed optimum TMPR and speed trajectory.

Copyright © 2012 by ASME

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