Optimum Battery Size for Fuel Cell Hybrid Electric Vehicle With Transient Loading Consideration

Optimum Battery Size for Fuel Cell Hybrid Electric Vehicle With Transient Loading Consideration—Part II

Published:2006-12-20 Issue:2 Volume:4 Page:176-184
ISSN:1550-624X
Container-title:Journal of Fuel Cell Science and Technology
language:en
Short-container-title:

Author:

Sundström Olle¹,Stefanopoulou Anna²

Affiliation:

1. Measurement and Control Laboratory, Swiss Federal Institute of Technology, CH-8092 Zurich, Switzerland

2. Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109

Abstract

This study presents a simplified model of a midsized vehicle powered by a polymer electrolyte membrane fuel cell stack together with a lead-acid battery as an energy buffer. The model is used with dynamic programming in order to find the optimal coordination of the two power sources while penalizing transient excursions in oxygen concentration in the fuel cell and the state of charge in the battery. The effects of the battery size on the overall energy losses for different drive cycles are determined, and the optimal power split policies are analyzed to quantify all the energy losses and their paths in an effort to clarify the hybridization needs for a fuel cell vehicle with constraints on dynamically varying variables. Finally, a causal nonpredictive controller is presented. The battery sizing results from the dynamic programming optimizations and the causal controller are compared.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials

Link

http://asmedigitalcollection.asme.org/electrochemical/article-pdf/4/2/176/5896004/176_1.pdf

Reference11 articles.

1. Optimum Battery Size for Fuel Cell Hybrid Electric Vehicle—Part 1;Sundstroem;ASME J. Fuel Cell Sci. Technol.

2. Friedman, D. J. , 1999, “Maximizing Direct-Hydrogen Pem Fuel Cell Vehicle Efficiency—Is Hybridization Necessary,” SAE Paper No. SP-1425.

3. Matsumoto, T., Watanabe, N., Sugiura, H., and Ishikawa, T., 2002, “Development of Fuel-Cell Hybrid Vehicle,” SAE Paper No. 2002-01-0096 SP-1691.

4. A Stochastic Control Strategy for Hybrid Electric Vehicles;Lin

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