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The Scientific World Journal
Volume 2015, Article ID 363094, 8 pages
Research Article

A Novel Range-Extended Strategy for Fuel Cell/Battery Electric Vehicles

1Department of Greenergy, National University of Tainan, Tainan 700, Taiwan
2Department of Mechanical Engineering, National Cheng Kung University, Tainan 701, Taiwan

Received 15 September 2014; Revised 5 December 2014; Accepted 7 December 2014

Academic Editor: Rui Xiong

Copyright © 2015 Jenn-Jiang Hwang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The range-extended electric vehicle is proposed to improve the range anxiety drivers have of electric vehicles. Conventionally, a gasoline/diesel generator increases the range of an electric vehicle. Due to the zero-CO2 emission stipulations, utilizing fuel cells as generators raises concerns in society. This paper presents a novel charging strategy for fuel cell/battery electric vehicles. In comparison to the conventional switch control, a fuzzy control approach is employed to enhance the battery’s state of charge (SOC). This approach improves the quick loss problem of the system’s SOC and thus can achieve an extended driving range. Smooth steering experience and range extension are the main indexes for development of fuzzy rules, which are mainly based on the energy management in the urban driving model. Evaluation of the entire control system is performed by simulation, which demonstrates its effectiveness and feasibility.