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An Analytical Optimization Method for Improved Fuel Cell–Battery–Ultracapacitor Powertrain

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2 Author(s)
Bauman, J. ; Univ. of Waterloo, Waterloo, ON, Canada ; Kazerani, M.

Fuel-cell vehicles have the potential to revolutionize transportation. In particular, a fuel-cell vehicle using a combined battery-ultracapacitor energy storage system can provide excellent fuel economy and performance while extending the battery life due to more frequent use of the ultracapacitor. This paper first presents a new fuel cell-battery-ultracapacitor (FC-B-UC) vehicle topology. Then, a vehicle simulator is used to show that the new topology is superior to a promising FC-B-UC topology from the literature. Finally, an analytical optimization method is developed to determine the optimal battery and ultracapacitor sizes for two different options of the novel FC-B-UC topology. The optimization method seeks to maximize efficiency and minimize mass and cost of the overall system. Numerical examples are provided to validate the analytical optimization method.

Published in:

Vehicular Technology, IEEE Transactions on  (Volume:58 ,  Issue: 7 )